DC-1460 S/M (MCA)

SERVICEMANUAL

Published in Apr. ’9819570762Revision 2

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DC-1460

DC

-146

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CAUTION: DOUBLE-POLE / NEUTRAL FUSING

ServiceManual

DC-1460

Safety precautions

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This booklet provides safety warnings and precautions for our servicepersonnel to ensure the safety of their customers, their machines as wellas themselves during maintenance activities. Service personnel areadvised to read this booklet carefully to familiarize themselves with thewarnings and precautions described here before engaging inmaintenance activities.

Safety warnings and precautions

Various symbols are used to protect our service personnel andcustomers from physical danger and to prevent damage to theirproperty. These symbols are described below:

DANGER: High risk of serious bodily injury or death may result frominsufficient attention to or incorrect compliance with warningmessages using this symbol.

WARNING: Serious bodily injury or death may result from insufficientattention to or incorrect compliance with warning messagesusing this symbol.

CAUTION: Bodily injury or damage to property may result frominsufficient attention to or incorrect compliance with warningmessages using this symbol.

SymbolsThe triangle ( ) symbol indicates a warning including dangerand caution. The specific point of attention is shown insidethe symbol.

General warning.

Warning of risk of electric shock.

Warning of high temperature.

indicates a prohibited action. The specific prohibition isshown inside the symbol.

General prohibited action.

Disassembly prohibited.

indicates that action is required. The specific actionrequired is shown inside the symbol.

General action required.

Remove the power plug from the wall outlet.

Always ground the copier.

1. Installation Precautions

WARNING

• Do not use a power supply with a voltage other than that specified.Avoid multiple connections to one outlet: they may cause fire or electricshock. When using an extension cable, always check that it isadequate for the rated current. ...............................................................

• Connect the ground wire to a suitable grounding point. Not groundingthe copier may cause fire or electric shock. Connecting the earth wireto an object not approved for the purpose may cause explosion orelectric shock. Never connect the ground cable to any of the following:gas pipes, lightning rods, ground cables for telephone lines and waterpipes or faucets not approved by the proper authorities. ........................

CAUTION:

• Do not place the copier on an infirm or angled surface: the copier maytip over, causing injury. ...........................................................................

• Do not install the copier in a humid or dusty place. This may cause fireor electric shock. .....................................................................................

• Do not install the copier near a radiator, heater, other heat source ornear flammable material. This may cause fire. .......................................

• Allow sufficient space around the copier to allow the ventilation grills tokeep the machine as cool as possible. Insufficient ventilation maycause heat buildup and poor copying performance. ...............................

• Always handle the machine by the correct locations when moving it. ....

• Always use anti-toppling and locking devices on copiers so equipped.Failure to do this may cause the copier to move unexpectedly ortopple, leading to injury. ..........................................................................

• Avoid inhaling toner or developer excessively. Protect the eyes. If toneror developer is accidentally ingested, drink a lot of water to dilute it inthe stomach and obtain medical attention immediately. If it gets into theeyes, rinse immediately with copious amounts of water and obtainmedical attention. ....................................................................................

• Advice customers that they must always follow the safety warnings andprecautions in the copier’s instruction handbook. ...................................

2. Precautions for Maintenance

WARNING

• Always remove the power plug from the wall outlet before startingmachine disassembly. ............................................................................

• Always follow the procedures for maintenance described in the servicemanual and other related brochures. ......................................................

• Under no circumstances attempt to bypass or disable safety featuresincluding safety mechanisms and protective circuits. .............................

• Always use parts having the correct specifications. ...............................

• Always use the thermostat or thermal fuse specified in the servicemanual or other related brochure when replacing them. Using a pieceof wire, for example, could lead to fire or other serious accident. ...........

• When the service manual or other serious brochure specifies adistance or gap for installation of a part, always use the correct scaleand measure carefully. ...........................................................................

• Always check that the copier is correctly connected to an outlet with aground connection. .................................................................................

• Check that the power cable covering is free of damage. Check that thepower plug is dust-free. If it is dirty, clean it to remove the risk of fire orelectric shock. .........................................................................................

• Never attempt to disassemble the optical unit in machines using lasers.Leaking laser light may damage eyesight. ..............................................

• Handle the charger sections with care. They are charged to highpotentials and may cause electric shock if handled improperly. .............

CAUTION

• Wear safe clothing. If wearing loose clothing or accessories such asties, make sure they are safely secured so they will not be caught inrotating sections. .....................................................................................

• Use utmost caution when working on a powered machine. Keep awayfrom chains and belts. .............................................................................

• Handle the fixing section with care to avoid burns as it can beextremely hot. .........................................................................................

• Check that the fixing unit thermistor, heat and press rollers are clean.Dirt on them can cause abnormally high temperatures. .........................

• Do not remove the ozone filter, if any, from the copier except forroutine replacement. ...............................................................................

• Do not pull on the AC power cord or connector wires on high-voltagecomponents when removing them; always hold the plug itself. ..............

• Do not route the power cable where it may be stood on or trapped. Ifnecessary, protect it with a cable cover or other appropriate item. ........

• Treat the ends of the wire carefully when installing a new charger wireto avoid electric leaks. ............................................................................

• Remove toner completely from electronic components. .........................

• Run wire harnesses carefully so that wires will not be trapped ordamaged. ................................................................................................

• After maintenance, always check that all the parts, screws, connectorsand wires that were removed, have been refitted correctly. Specialattention should be paid to any forgotten connector, trapped wire andmissing screws. ......................................................................................

• Check that all the caution labels that should be present on the machineaccording to the instruction handbook are clean and not peeling.Replace with new ones if necessary. ......................................................

• Handle greases and solvents with care by following the instructionsbelow: .....................................................................................................· Use only a small amount of solvent at a time, being careful not to

spill. Wipe spills off completely.· Ventilate the room well while using grease or solvents.· Allow applied solvents to evaporate completely before refitting the

covers or turning the main switch on.· Always wash hands afterwards.

• Never dispose of toner or toner bottles in fire. Toner may causesparks when exposed directly to fire in a furnace, etc. .........................

• Should smoke be seen coming from the copier, remove the powerplug from the wall outlet immediately. ..................................................

3. Miscellaneous

WARNING

• Never attempt to heat the drum or expose it to any organic solventssuch as alcohol, other than the specified refiner; it may generate toxicgas. .........................................................................................................

195

CONTENTS

I THEORY AND CONSTRUCTION SECTION1-1 Specifications

1-1-1 Specifications ................................................................................... 1-1-11-2 Handling Precautions

1-2-1 Drum ................................................................................................. 1-2-11-2-2 Developer and toner ......................................................................... 1-2-1

1-3 Mechanical Construction1-3-1 Part names and their functions ......................................................... 1-3-11-3-2 Machine cross section ...................................................................... 1-3-31-3-3 Drive system ..................................................................................... 1-3-41-3-4 Mechanical construction ................................................................... 1-3-5

II ELECTRICAL SECTION2-1 Electrical Parts Layout

2-1-1 Electrical parts layout ....................................................................... 2-1-12-2 Detection of Paper Misfeeds

2-2-1 Paper misfeed detection ................................................................... 2-2-12-2-2 Paper misfeed detection conditions ................................................. 2-2-2

2-3 Operation of the PCB2-3-1 Power source PCB ........................................................................... 2-3-12-3-2 Main PCB ......................................................................................... 2-3-22-3-3 AVR PCB .......................................................................................... 2-3-32-3-4 Operation unit PCB .......................................................................... 2-3-4

III SET UP AND ADJUSTMENT SECTION3-1 Installation

3-1-1 Unpacking and installation ............................................................... 3-1-13-1-2 Setting initial copy modes ............................................................... 3-1-103-1-3 Installing the dehumidifier heater (optional,

120 V specifications only) ............................................................... 3-1-113-1-4 Installing the flicker resistor (optional, 240 V/50 Hz

specifications only) ......................................................................... 3-1-133-2 Simulation

3-2-1 Simulations ....................................................................................... 3-2-13-3 Assembly and Disassembly

3-3-1 Precautions for assembly and disassembly ..................................... 3-3-13-3-2 Paper feed section ........................................................................... 3-3-23-3-3 Main charging section .................................................................... 3-3-133-3-4 Exposure section ............................................................................ 3-3-163-3-5 Drum section (metric specification only) ......................................... 3-3-503-3-6 Developing section (metric specification only) ............................... 3-3-533-3-7 Transfer section .............................................................................. 3-3-553-3-8 Cleaning section (metric specification only) ................................... 3-3-593-3-9 Fixing section ................................................................................. 3-3-62

195-1

3-4 PCB Initial Setting3-4-1 Replacing the main PCB .................................................................. 3-4-13-4-2 Adjustment-free variable resistors (VR) ........................................... 3-4-3

3-5 Self-diagnostics3-5-1 Self diagnostic function .................................................................... 3-5-1

3-6 Troubleshooting3-6-1 Image formation problems ................................................................ 3-6-13-6-2 Paper misfeed ................................................................................ 3-6-153-6-3 PCB terminal voltages .................................................................... 3-6-173-6-4 Electrical problems ......................................................................... 3-6-253-6-5 Mechanical problems ..................................................................... 3-6-31

3-7 AppendixesTiming chart No. 1 ...................................................................................... 3-7-1Timing chart No. 2 ...................................................................................... 3-7-2Timing chart No. 3 ...................................................................................... 3-7-3Power source PCB ..................................................................................... 3-7-4AVR PCB .................................................................................................... 3-7-5Operation unit PCB ..................................................................................... 3-7-6Main PCB ................................................................................................... 3-7-7Connection diagram ................................................................................... 3-7-8Wiring diagram ........................................................................................... 3-7-9

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DC-1460 S/M (MCA)

THEORY ANDCONSTRUCTION

SECTION

I

I The

ory a

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onst

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1-1 Specifications1-1-1 Specifications .................................................................................... 1-1-1

195

1-1-1

1-1-1 Specifications

Type ......................................... DesktopCopying system ....................... Dry, indirect electrostatic systemOriginals ................................... Sheets, books and 3-dimensional objects

Maximum size: Folio/81/2" × 14"Original feed system ................ FixedCopy paper .............................. Plain paper:

80 g/m2 (metric), 75 g/m2 (inch) for drawer feed60 - 120 g/m2 (metric), 75 g/m2 (inch) for bypass feedSpecial paper: OHP film, letterhead and colored paperNote: Use the bypass for special paper.

Copying sizes ........................... Maximum: Folio/81/2" × 14"Minimum: A6R/51/2" × 81/2"

Magnification ratios .................. 70 - 141%, 1% incrementsFixed ratios:Metric1:1 6 1.0%, 1:1.410, 1:0.700Inch1:1 6 1.0%, 1:1.290, 1:0.780

Copy speeds ............................ At 100% magnification:A4R/81/2" × 11": 14 copies/min.A5R/51/2" × 81/2": 14 copies/min.Folio/81/2" × 14": 12 copies/min.

First copy time .......................... 5.8 s or less (A4R/81/2" × 11", 100% magnification,manual exposure)

Warm-up time .......................... 30 s or less (room temperature 20°C/68°F, 65%RH)Paper feed system ................... Automatic feed from the paper drawer

Capacity: 250 sheets of 80 g/m2 (metric) or 75 g/m2

(inch)Manual feed from the bypass section1 sheet at a time

Multiple copying ....................... 1 - 99 copiesPhotoconductor ........................ OPC (drum diameter 30 mm)Charging system ...................... Single positive corona charging

(drum potential: 820 V DC)Exposure system ..................... Slit exposureLens ......................................... Fixed-focal lens, f: 190 mm, F: 7.2Light source ............................. Halogen lamp, 230 WDeveloping system ................... Dry, magnetic brush

Developer: 2-component, ferrite carrier and N27 T blacktonerToner density control: toner sensorToner replenishing: automatic from a toner cartridge

Transfer system ....................... Single positive corona charging, +4.8 kV DC (reference)Separation system ................... Curvature separation

+100 V–50 V

195

1-1-2

Fixing system ........................... Heat rollerHeat source: halogen heater (910 W with 120 V supply,1040 W with 240 V supply)Control temperature: 175°C/347°F (at normal ambienttemperature)Abnormally high temperature protection devices:135°C/275°F and 140°C/284°F thermostatsFixing pressure: 94 N

Charge erasing system ............ Exposure by cleaning lampCleaning system ...................... Cleaning bladeFunctions ................................. ( 1 ) Self-diagnostics

( 2 ) Simulation( 3 ) Auto clear (30 - 270 s, in intervals of 30 s)( 4 ) Auto start( 5 ) Auto shutoff (15 - 240 min., in intervals of 15 min.)( 6 ) Auto preheat/energy saving (5 - 45 min., in

intervals of 5 min.)( 7 ) Exposure adjustment( 8 ) Auto exposure( 9 ) Photo mode(10) Manual magnification selection(11) Fixed magnification(12) User exposure control(13) Paper empty detection(14) Toner empty detection(15) Paper jam detection(16) Copy number setting(17) Total counter

Power source ........................... 120 V AC, 60 Hz, max. 10.2 A220 - 240 V AC, 50/60 Hz, 2.4 A (average)

Rated power consumption ....... 1361 W (220 - 240 V)1195 W (120 V)

Dimensions .............................. 515 (W) × 465 (D) × 320 (H) mm201/4" (W) × 185/16" (D) × 125/8" (H)

Weight ...................................... Approx. 22 kg/48.5 lbsFloor requirements ................... 515 (W) × 465 (D) mm

201/4" (W) × 185/16" (D)Accessories .............................. Copy tray

195

1-2 Handling Precautions1-2-1 Drum ................................................................................................. 1-2-11-2-2 Developer and toner .......................................................................... 1-2-1

195

1-2-1

1-2-1 Drum

Note the following when handling or storing the drum.• When removing the drum unit, never expose the drum surface to strong direct

light.• Keep the drum at an ambient temperature between –20°C/–4°F and 40°C/104°F

and at a relative humidity not higher than 85% RH. Avoid abrupt changes intemperature and humidity.

• Avoid exposure to any substance which is harmful to or may affect the quality ofthe drum.

• Do not touch the drum surface with any object. Should it be touched by hands orstained with oil, clean it.

• If the machine is left open for more than 5 minutes for maintenance, remove thedrum and store it in the drum storage bag (Part No. 78369020).

1-2-2 Developer and toner

Store the developer and toner in a cool, dark place. Avoid direct light, high humidity andtemperature.

195

1-3 Mechanical Construction1-3-1 Part names and their functions ......................................................... 1-3-11-3-2 Machine cross section ....................................................................... 1-3-31-3-3 Drive system ..................................................................................... 1-3-41-3-4 Mechanical construction .................................................................... 1-3-5

( 1 ) Paper feed section .................................................................... 1-3-5(1-1) Paper feed from the paper drawer .................................... 1-3-7(1-2) Paper feed from the bypass slot ....................................... 1-3-8

( 2 ) Main charging section ............................................................... 1-3-9( 3 ) Exposure section ..................................................................... 1-3-12( 4 ) Developing section .................................................................. 1-3-18( 5 ) Transfer and separation section .............................................. 1-3-26( 6 ) Cleaning section ...................................................................... 1-3-29( 7 ) Charge erasing section ........................................................... 1-3-30( 8 ) Fixing and eject section ........................................................... 1-3-32

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1-3-1

1-3-1 Part names and their functions

Figure 1-3-1

1 Original holder2 Contact glass3 Original size indicator4 Operation panel5 Drum unit6 Developing unit7 Developing unit release lever8 Toner cartridge

9 Front cover0 Paper drawer! Main switch@ Grips# Width guide$ Length guide% Copy tray^ Auxiliary tray

& Bypass section* Insertion guides( Release unit) Release unit button⁄ Eject section cover

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1-3-2

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Figure 1-3-2 Operation panel

1 Print key2 Copy start indicator3 Stop/clear key4 Quantity/zoom-up key5 Quantity/zoom-down key6 Copy quantity/magnification display7 Zoom input/enter key8 Zoom copy indicator9 Copy size key0 Fixed magnification indicators! Add toner indicator@ Maintenance indicator (metric)

Replace unit indicator (inch)# Exposure adjustment keys$ Exposure indicators% Exposure mode key^ Auto exposure indicator& Photo original indicator

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1-3-3

1-3-2 Machine cross section

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Figure 1-3-3 Machine cross section

1 Paper feed section (page 1-3-5)2 Main charging section (page 1-3-9)3 Exposure section (page 1-3-12)4 Developing section (page 1-3-18)

5 Transfer and separation section(page 1-3-26)

6 Cleaning section (page 1-3-29)7 Charge erasing section (page 1-3-30)8 Fixing and eject section (page 1-3-32)

195

1-3-4

1-3-3 Drive system

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Figure 1-3-4 Drive system

1 Scanner wire2 Scanner wire pulley3 Mirror motor gear4 Scanner drive gear B5 Scanner wire drum B6 Scanner motor gear7 Scanner drive gear 648 Scanner wire drum A9 Eject roller gear0 Idle gear 20! Fixing gear 32@ Gear 27/38# Gear 41/56$ Gear 30/35% Gear 28^ Gear 33

& Feed gear 16* Gear 35( Paper feed clutch gear) Registration gear 14⁄ Gear 20/43¤ Drive motor gear‹ Gear 26/54› Drum drive gearfi Gear 38/43fl Developing drive gear‡ Gear 30° Toner cartridge drive gear· Toner cartridge drive gear‚ Toner cartridge idle gearŒ Toner cartridge idle gear„ Toner feed motor gear

195

1-3-5

1-3-4 Mechanical construction( 1 ) Paper feed section

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Figure 1-3-5 Paper feed section

1 Drawer bottom plate2 Drawer spring3 Front and rear drawer claws4 Paper feed pulleys A and B5 Feed roller guide6 Feed roller7 Bypass guide8 Feed pulley

9 Right registration roller0 Left registration roller! Upper pre-transfer guide@ Pre-transfer guide# Paper feed clutch (PFCL)$ Registration switch (RSW)% Registration clutch (RCL)

195

1-3-6

The paper feed section consists of the primary feed and secondary feed subsections.Primary feed conveys paper from the paper drawer or the bypass slot to the right andleft registration rollers, at which point secondary paper feed takes place and the papertravels to the transfer section in sync with the exposure timing.

MPCB

RSWCN7-5

RCL

PFCLCN7-6

CN7-7

Figure 1-3-6 Paper feed section block diagram

195

1-3-7

(1-1) Paper feed from the paper drawerThe paper drawer consists of the drawer bottom plate, drawer springs and othercomponents and can hold up to 250 sheets of copy paper.Paper is fed out of the drawer by the rotation of paper feed pulleys A and B.

600 ms

330 ms

246 P *1

A B C D

HPSW

SM

PFCL

RCL

RSW

200 ms

Print key

Auto exposure mode, A4R/81/2" × 14" copy paper, magnification ratio 100%*1 Varies depending on the setting by simulation 58.

Timing chart 1-3-1 Paper feed from the paper drawer

A 200 ms after the print key has been pressed, the paper feed clutch (PFCL) turns onfor 600 ms, rotating paper feed pulleys A and B to perform primary feed. Then thepaper is fed to the right and left registration rollers by the rotation of the feed roller.

B The leading edge of the paper turns the registration switch (RSW) on.C 246 pulses after the scanner has started scanning, the registration clutch (RCL)

turns on and the right registration roller conveys the paper to start secondary feed.D 330 ms after the trailing edge of the paper has turned the registration switch (RSW)

off, the registration clutch (RCL) turns off to complete secondary paper feed.

195

1-3-8

(1-2) Paper feed from the bypass slotThe bypass slot can hold one sheet of paper at one time.Copying starts when the paper turns the registration switch (RSW) on and the paper isconveyed to the secondary paper feed section by the feed roller.

RSW

246 P *1

200 ms

330 ms

HPSW

SM

RCL

DM

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Manual exposure mode, A4R/81/2" × 14" copy paper, magnification ratio 70%*1 Varies depending on the setting by simulation 58.

Timing chart 1-3-2 Paper feed from the bypass slot

A 200 ms after the leading edge of the paper has turned the registration switch (RSW)on, the drive motor (DM) turns on and the feed roller feeds the paper to start primarypaper feed where the paper is fed to the right and left registration rollers.

B 246 pulses after the scanner motor (SM) has started rotating forward, the registrationclutch (RCL) turns on and the right registration roller conveys the paper to startsecondary paper feed.

C 330 ms after the trailing edge of the paper has turned the registration switch (RSW)off, the registration clutch (RCL) turns off to complete secondary paper feed.

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1-3-9

( 2 ) Main charging sectionThe main charging section consists of the drum and main charger. The drum iselectrically charged uniformly by means of a grid to form a latent image on the surface.

Main charger

Tungsten wire

Main charger grid

Figure 1-3-7 Main charging section

195

1-3-10

12

3

4

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Figure 1-3-8 Main charger

MPCB

CN1-6

CN1-5

CN1-4

CN1-3

CN1-1

CN8-2

CN8-3

CN8-4

CN8-5

CN8-7

HV ALM

PHOTO REM

HV REM

DB REM

HVTPCB

MC

Grid

Drum

24 V DC

Figure 1-3-9 Main charging section block diagram

1 Main charger rear lid2 Charger spring3 Charger wire4 Main charger front lid5 Charger wire retainer pin

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1-3-11

A B C

SM

DM

HV REM

200 ms

50 ms 384 ms

Print key

FWD REV

Manual exposure mode, A4R/81/2" × 14" copy paper, paper feed from the paper drawer

Timing chart 1-3-3 Main charging

A 200 ms after the print key has been pressed, the drive motor (DM) starts to rotate.B 50 ms after the drive motor (DM) has started to rotate, main charging (HV REM)

starts.C 384 ms after the scanner motor (SM) has stopped rotating forward, main charging

(HV REM) ends.

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1-3-12

( 3 ) Exposure section

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Figure 1-3-10 Exposure section

1 Mirror 12 Mirror 23 Mirror 34 Mirror 45 Mirror 56 Mirror 67 Halogen lamp (HL)8 Optical section thermostat

(TH3)9 Lens0 Light source unit 1

! Light source unit 2@ Main reflector# Auxiliary reflector$ Scanner motor (SM)% Optical section fan motor (OPFM)^ AE sensor (AES)& Home position switch (HPSW)* Lens home position switch (LHPSW)( Mirror home position switch (MHPSW)) Dust filter

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1-3-13

This copier employs a slit exposure system with a fixed original table, and a halogenlamp (HL) as the light source.The optical section consists of light source units 1 and 2. Light source unit 1 carries thehalogen lamp and the main and auxiliary reflectors. Each unit travels from one side ofthe machine to the other along scanner rails at machine front and rear. When anenlargement or a reduction ratio is selected, the scanning speeds of the two light sourceunits and the positions of the lens and mirrors 2 and 3 are changed, altering thedistance between the original and the drum.A cooling fan is installed to exhaust heat generated by the halogen lamp. If anabnormally high temperature is detected around light source unit 1, the optical sectionthermostat (TH3) shuts off the supply to the halogen lamp.

SM

HL

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MPCB

HLHPSW AES

TH3 CN2-1

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CN

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Figure 1-3-11 Exposure section block diagram

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1-3-14

A B C F GD E

200 ms

350 ms

910 P

100 ms

55 ms

2358 P5 P 5 P

65 ms

HPSW

SM

HL

Print key

FWD REV FWD REV

Auto exposure mode, A4R/81/2" × 14" original

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Timing chart 1-3-4 Scanner travel

A 200 ms after the print key has been pressed, the halogen lamp (HL) lights at theintensity for prescan.

B 350 ms after the halogen lamp (HL) has turned on, the scanner motor (SM) rotatesforward for prescan.

C After rotating forward for 910 pulses, the scanner motor (SM) pauses for 100 ms. Itthen reverses to return the scanner to the home position.

D 5 pulses after the home position switch (HPSW) has been turned on, the scannermotor (SM) turns off and the scanner stops.

E 55 ms after the scanner motor (SM) has turned off, it rotates forward again forscanning.

F After rotating forward for 2358 pulses, the scanner motor (SM) pauses. At the sametime, the halogen lamp (HL) turns off. 65 ms later, the scanner motor (SM) reversesto return the scanner to the home position.

G 5 pulses after the home position switch (HPSW) has been turned on, the scannermotor (SM) turns off and the scanner stops.

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1-3-15

Exposure control for manual exposure and photo modes

The halogen lamp light intensity for manual exposure and photo modes is calculatedfrom the data obtained by running simulation 24. The number of exposure stepsdepends on the setting in simulation 96-1: 7 or 13 steps when set to “NORMAL MODE”and 19 or 25 steps when set to “SPECIAL AREA”. The exposure scale is wider forSPECIAL AREA than for NORMAL MODE.

0–6–6

+1+1

+2+2

+3+3

+4+4

+5+5

+6+6

–5–5

–4–4

–3–3

–2–2

–1 1 2 3 4 5 6 71 2 3 5 7 9 11 13–1 4 6 8 10 12

Light intensity value

Exposure scale (Exp.)

19 steps25 steps

: Exposure width for NORMAL MODE (7 or 13 steps)

Figure 1-3-12 Exposure gradient setting for SPECIAL AREA

•Exposure control for manual exposure modeThe gradient is determined from the halogen lamp intensity values for Exp. 1, Exp. 4 or7 and Exp. +2 set in simulation 24.The exposure control between Exp. +2 and Exp. +6 is based on the gradient of the lightintensity value between Exp. 4 or 7 and Exp. +2.The gradient of the light intensity value between Exp. –6 and Exp. 1 is 2 per step.•Exposure control for photo modeThe exposure for photo mode is controlled by setting the drum potential below that formanual exposure mode.

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1-3-16

Exposure control for auto exposure mode

In auto exposure mode, the halogen lamp lights at the intensity set by simulation 28-1 toperform prescan. The exposure level to copy that particular original is determined byusing the value read in by the AE sensor.

100 mm

148 mm

AE detection (prescan)

Scannermovement

Original leading edge

Exposure Original leading edge

Original

Detection width

Figure 1-3-13 AE sensor detection width

0 NPTC NTC

AE sensor read-in value

Halogen lamp voltage

Manual-mode Exp. +2

Manual-mode Exp. 4 or 7

Figure 1-3-14 Exposure control for auto exposure mode

The halogen lamp voltage is controlled so that the lamp lights at the intensity formanual-mode Exp. 4 or 7 when the AE sensor read-in value is the NTC level and at theintensity for manual-mode Exp. +2 when the read-in value is the NPTC level whensetting auto exposure values in simulation 28-2 and -3.For read-in values below the NPTC level of simulation 28-3, the halogen lamp voltage iskept at a constant level so that the halogen lamp lights at the intensity for manual-modeExp. +2. For read-in values above the NTC level of simulation 28-2, the halogen lampvoltage is kept at a constant level so that the halogen lamp lights at the intensity formanual-mode Exp. 4 or 7.

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1-3-17

Light intensity correction for enlargement and reduction modes

The halogen lamp light intensity for enlargement and reduction modes is determined bythe value for copying at 100% magnification and the correction values set by simulation29.

70 100 141

Sim. 29-2(70%)

0

Sim. 29-1(141%)

Light intensity correction value

Magnification ratio (%)

Figure 1-3-15 Correction of light intensity for enlargement and reduction modes

The correction values set by simulation 29 for reduction (70%) and enlargement (141%)copying are linked by a straight line through the value for 100% magnification, and thelight intensity is corrected for individual magnification ratios according to the gradients.The gradients vary depending on the setting values in simulation 29.The prescan light intensity for enlargement and reduction copying is increased by 0.1 asthe magnification ratio changes by 1%. For copying at 70% the prescan light intensity isthe 100% level plus 3; for 141%, the 100% level plus 4.1.

195

1-3-18

( 4 ) Developing sectionThe developing section consists of the developing unit and toner cartridge.

Developing unit

Toner cartridge

Figure 1-3-16 Developing section

The developing unit consists of the developing roller where a magnetic brush is formed,doctor blade and the developing spirals that agitate the developer.Toner in the toner cartridge is mixed with residual toner recovered from the cleaningsection, and the mixture is conveyed to the developing unit.

195

1-3-19

Cleaning spiral

Developing unit

Toner cartridge

Toner cartridge paddle

Toner cartridge spiral

Toner recycling spiralToner flow

Figure 1-3-17 Toner recycling

195

1-3-20

Formation of the magnetic brush

The developing roller consists of a magnet roller with five poles and a sleeve roller.Rotation of the sleeve roller around the magnet roller entrains developer, which in turnforms a magnetic brush at pole N1 on the magnet roller. The height of the magneticbrush is regulated by the doctor blade; the developing result is affected by the positionsof the poles on the magnet roller and the position of the doctor blade.The developing bias voltage generated by the high-voltage transformer PCB (HVTPCB)is applied to the developing roller to provide image contrast.

3

5

4

12

6

A

Figure 1-3-18 Forming the magnetic brush

S1

75˚

80˚

84˚

67˚

N1

S2N3

N2

Magnetic poles on the magnet roller

N1: 850 × 10–4 ± 50 × 10–4 TN2: 500 × 10–4 ± 50 × 10–4 TN3: 450 × 10–4 ± 50 × 10–4 TS1: 880 × 10–4 ± 50 × 10–4 TS2: 900 × 10–4 ± 50 × 10–4 T

A: distance between the doctor bladeand developing roller: 0.525 ± 0.025 mm

1 Developing unit housing2 Developing roller3 Toner sensor (TNS)

4 Doctor blade5 Right developing spiral6 Left developing spiral

195

1-3-21

CN2-1

CN2-2

CN6-7

CN6-8

CN8-5

TFM

TNS

TNS

TNS CONT

DB REM

MPCB

CN1-3

HVTPCB

Developing bias

Figure 1-3-19 Developing section block diagram

Toner density is detected by the toner sensor (TNS).The sensor section of the toner sensor detects the ratio of toner to carrier in thedeveloper near it and converts it into a voltage. As more toner is used, the ratio of tonerto carrier decreases, increasing the toner sensor output voltage.When the ratio drops below the specified value, the increase in toner sensor outputvoltage triggers toner replenishing. When toner is added and the ratio of toner to carrierreturns to normal, the toner sensor output voltage drops to the point where tonerreplenishing stops.

195-1

1-3-22

Toner density control

Toner density is controlled by switching the toner feed motor on and off, using as thereference the toner sensor output based on the toner sensor control voltage set whensimulation 60 was executed while the developer was first supplied. The toner sensoroutput is also used to detect an empty toner cartridge.

A B C D

E

Toner sensor output voltage (V)

AP detection level(3.21)

AP reset level(3.00)

Toner emptyend level (2.75)

Toner feed motor onlevel (2.05)

Toner feed motor offlevel (2.00)

“AP” blinks on the copy quantity/magnification display.

Max. 2 min.

Copy operation

Forced feed (continuously on)Intermittent feed (0.2 s on/1.0 s off)

Forced toner feed

Figure 1-3-20 Toner density control

A When the toner sensor output voltage exceeds the toner feed motor on level, thetoner feed motor intermittent feed (0.2 s on/1.0 s off) operation is carried out to feedthe toner.

B When the toner is fed and the toner sensor output voltage falls below the toner feedmotor off level, the intermittent feed operation is stopped.

C When the toner in the toner cartridge runs low and, even though the tonerintermittent feed operation is continued, the toner sensor output voltage rises abovethe AP detection level, “AP” blinks on the copy quantity/magnification display and thetoner feed motor forced feed (continuously on) operation starts.

D If the toner sensor output voltage falls to the AP reset level within the toner feedmotor forced feed operation time (2 minutes max.), the copier returns to the readystate and continues the intermittent feed operation.

E If the toner sensor output voltage does not fall to the AP reset level within 2 minutesafter it has started to fall below the AP detection level, the add toner indicator lights.

195

1-3-23

GF

Toner sensor output voltage (V)

AP detection level (3.21)

Toner emptyend level (2.75)

Toner feed motor onlevel (2.05)

Toner feed motor offlevel (2.00)

Toner cartridge replacement

Max. 3'19"

Forced toner feed

If forced feed does not lower the level, the add toner indicator stays lit.

The add toner indicatorturns off and intermittentfeed continues(2 minutesmax.) until the toner feedmotor off level is reached.

Copy operation

Figure 1-3-21

F After the toner cartridge is replaced, “AP” blinks and the forced feed operation(continuously on) is started by turning the safety switch off and on. During forcedfeed, the toner is fed and when the toner sensor output voltage reaches the tonerempty end level, “AP” on the copy quantity/magnification display goes out and thecopier enters the ready state. Further intermittent feed operation is carried out for upto 2 minutes or until the toner sensor output voltage reaches the toner feed motor offlevel.

G If the toner sensor output voltage does not reach the toner empty end level within theforced feed operation time, the add toner indicator stays lit even after the end of theforced feed operation time.

195-1

1-3-24

Controlling the toner sensor output voltage

When initializing the toner control level in simulation 60, the toner sensor control voltage(TNS CONT) is set so that the toner sensor output voltage (TNS) is 1.60 V DC.The image density is subject to humidity changes and the developing unit drive time. Tomaintain the image density constant, the toner sensor output voltage (TNS) is correctedby the toner sensor control voltage (TNS CONT).

–1

–0.9

–0.8

–0.7

–0.6

–0.5

–0.4

–0.3

–0.2

–0.1

11.3981.397 35.849

1 1 0 - 350 min.2 350 - 700 min.3 700 - 1050 min.4 1050 - 1400 min.5 More than 1400 min.

A B

2

3

4

5

Developing unit drive time

Absolute humidity (g/m3)

Toner sensor control voltage correction value (V)

Figure 1-3-22 Correction based on the absolute humidity

A The toner sensor control voltage correction value is kept constant when the absolutehumidity is between 1.397 and 11.398 g/m3. The toner sensor control voltagecorrection value varies depending on the developing unit drive time (the total drivemotor on time since the main switch was last turned on).

B The toner sensor control voltage correction value changes so that it is -0.5 V whenthe absolute humidity is 35.849 g/m3 when the absolute humidity is between 11.398and 35.849 g/m3. The rate of change is constant and it varies depending on thedeveloping unit drive time (the total drive motor on time since the main switch waslast turned on).

195

1-3-25

[Computing the absolute humidity]The humidity sensor (HUMSENS) and external temperature thermistor (ETTH) arelocated on the humidity sensor PCB (HUMPCB). The humidity sensor (HUMSENS)converts the relative humidity detected by the humidity sensing element into a voltageand sends it to the main PCB (MPCB). The main PCB computes the absolute humiditybased on this HUMSENS signal and the temperature (ETTH signal) detected by theexternal temperature thermistor.

HUMPCB

MPCB

HUMSENS

3 HUMSENS

4

5

GND

CN4-5

CN4-4

CN4-3

CN4-2

CN4-1

1

2

ETTHETTH

GND

Humidity sensing element

5 V DC

Figure 1-3-23 Absolute humidity computation block diagram

1050

1559

2068

2577

3086

3595

45

40

35

30

25

20

15

10

5

0

100

80

60

40

20

(˚C)(˚F)

Abs

olut

e hu

mid

ity (

g/m

3 )

Temperature (˚C/˚F)

Rel

ativ

e hu

mid

ity (

%R

H)

Figure 1-3-24 Absolute humidity vs. relative humidity

195

1-3-26

( 5 ) Transfer and separation section

Post-transfer guide

Tungsten wire

Transfer charger

Figure 1-3-25 Transfer and separation section

The transfer and separation section consists of the transfer charger.In the transfer charger, a high voltage generated by the high-voltage transformer PCB(HVTPCB) is applied across both ends of the tungsten wire for transfer charging and thetoner image is transferred from the drum surface onto the paper.After transfer, paper is separated from the drum by curvature separation under its ownweight and by the post-transfer guide.

195

1-3-27

1

9

2

4

5

6

8

7

3

Figure 1-3-26 Transfer charger

HV ALM

HV

CN8-7

CN8-2

CN1-1

HV REMCN8-4 CN1-4

CN1-6

MPCB

HVTPCB

Drum

24 V DC

Figure 1-3-27 Transfer and separation section block diagram

1 Front transfer housing2 Rear transfer housing3 Transfer front lid4 Transfer rear lid5 Transfer charger shield

6 Pre-transfer guide7 Charger wire8 Charger spring9 Charger wire retainer pin

195

1-3-28

A B C

SM

DM

HV REM

200 ms

50 ms 384 ms

Print key

FWD REV

Manual exposure mode, A4R/81/2" × 14" copy paper, paper feed from the paper drawer

Timing chart 1-3-5 Transfer and separation

A 200 ms after the print key has been pressed, the drive motor (DM) starts to rotate.B 50 ms after the drive motor (DM) has started to rotate, transfer charging (HV REM)

starts.C 384 ms after the scanner motor (SM) has stopped rotating forward, transfer charging

(HV REM) ends.

195

1-3-29

( 6 ) Cleaning sectionThe cleaning section consists of the cleaning blade, which removes residual toner fromthe drum surface after transfer, and the cleaning spiral that carries the residual tonerback to the toner cartridge.

4

13

2

Figure 1-3-28 Cleaning section

1 Drum2 Cleaning blade

3 Lower cleaning blade4 Cleaning spiral

195

1-3-30

( 7 ) Charge erasing section

Cleaning lamp (CL)

Blank lamps (BL)

Figure 1-3-29 Charge erasing section

The charge erasing section consists of the blank lamps (BL) and the cleaning lamp(CL).The blank lamps (BL) are 28 LEDs. All the LEDs light to create leading edge and trailingedge blank cut margins. During exposure, the required number of the 28 blank lamps onboth sides are lit depending on the paper size and the magnification ratio, removingcharge from the sections of the copy where no image is to be formed.The cleaning lamp (CL) removes residual charge from the drum surface.

CN2-1–CN2-5

CN2-6,CN2-7

CN2-1–CN2-5

CN2-13,CN2-14

CN4-11

CN1-4,CN1-3

CN1-16–CN1-12

CN9-1CN9-2CN7-4

MPCB

CL

BL DIG 5, 6

BL SEG a–e

DIG 5, 6

SEG a–eBL

CLCL REM

OPCB

AVRPCB

24 V DC

Drum

Figure 1-3-30 Charge erasing section block diagram

195

1-3-31

RSW

ESW

SM

HV REM

DM

CL

BL

100 ms

285 ms127 P *1

200 ms

190 ms *2

BA C D E

Bypass feed, manual exposure mode, A4R/81/2" × 14" copy paper,magnification ratio 70%*1 Varies depending on the magnification ratio and the setting by simulation 54.*2 Varies depending on the setting by simulation 59.

Scan start

FWD REV

All on Side erasure All on

Timing chart 1-3-6 Charge erasing

A 200 ms after the registration switch (RSW) has been turned on by the paper insertedto the bypass, the drive motor (DM), the cleaning lamp (CL) and all the blank lamps(BL) turn on.

B 127 pulses after the scanner has started scanning, the required number of blanklamps (BL) light depending on the paper size and the magnification ratio, removingunnecessary charge in the non-image forming area.

C 190 ms after the trailing edge of the paper has turned the registration switch (RSW)off, all the blank lamps (BL) turn on.

D 285 ms after the main charging (HV REM) has completed, the blank lamps (BL) turnoff.

E 100 ms after the paper has been ejected and the eject switch (ESW) has beenturned off, the drive motor (DM) and the cleaning lamp (CL) turn off at the same time.

195-1

1-3-32

( 8 ) Fixing and eject section

1&

#$

%

2@

67

4

^

!

0

8

5

9

3

Figure 1-3-31 Fixing and eject section

1 Fixing unit cover2 Fixing unit upper housing3 Fixing unit lower housing4 Fixing entrance guide5 Eject guide6 Heat roller7 Press roller8 Heat roller separation claws9 Fixing pressure springs

0 Eject pulley! Eject roller@ Fixing heater (H)# Fixing unit thermostat 1 (TH1)$ Fixing unit thermostat 2 (TH2)% Fixing unit thermistor (FTH)^ Eject switch (ESW)& Fixing blade

195

1-3-33

The fixing and eject section consists of the parts shown in Figure 1-3-31. When thepaper reaches the fixing section after the transfer process, it passes through the gapbetween the press roller and heat roller, which is heated by the fixing heater (H).Pressure is applied by the fixing pressure springs so that toner on the paper is meltedand fused onto the paper.When the fixing process is completed, the paper is separated from the heat and pressrollers by the heat roller separation claws and is ejected out of the copier by the rotationof the eject pulley and eject roller.

H

TH2 TH1

FT

H

FT

H

H R

EM

MPCB

CN

7-11

CN

7-8

TB1

CN13-1

CN13-2

TB2

AVRPCB

CN

4-7

CN

4-4

FTH

H LIVE

H COMHeat roller

5 V DC

Figure 1-3-32 Fixing section block diagram

195

1-3-34

Heating the heat roller and detecting temperature

12

4

5

3

Figure 1-3-33 Heating the heat roller and detecting temperature

The heat roller is heated by the fixing heater (H) inside it; its surface temperature isdetected by the fixing unit thermistor (FTH) and is regulated by the fixing heater turningon and off. If the fixing section becomes abnormally hot, either the fixing unit thermistordetects it or fixing unit thermostat 1 or 2 (TH1 or TH2) operates, in each case shuttingthe power to the fixing heater off.

1 Heat roller2 Fixing heater (H)3 Fixing unit thermostat 1 (TH1)

4 Fixing unit thermostat 2 (TH2)5 Fixing unit thermistor (FTH)

195

1-3-35

Fixing temperature control

MSW

H

DM

CL

BL

FFM

Copy start indicator

200 ms

1 s

29 s

10 s

A B C DE F

Prim

ary

stab

iliza

tion

fixin

g te

mpe

ratu

re80

˚C/1

76˚F

Sec

onda

ry s

tabi

lizat

ion

fixin

g te

mpe

ratu

re18

5˚C

/365

˚F

Cop

ying

ena

bled

Prim

ary

stab

iliza

tion

fixin

g te

mpe

ratu

re17

5˚C

/347

˚F

Half speedFull speed

Timing chart 1-3-7 Fixing temperature control

A When the main switch (MSW) is turned on the fixing heater (H) turns on to heat theheat roller. The fixing fan motor (FFM) rotates at full speed for 1 s and then at halfspeed.

B 200 ms after the fixing temperature has reached 80°C/176°F, the drive motor (DM),cleaning lamp (CL) and blank lamps (BL) turn on to start primary stabilization.

C When the fixing temperature reaches 185°C/365°F, secondary stabilization isachieved. The fixing heater (H) is then turned on and off as required to keep thefixing temperature at 185°C/365°F.

D After secondary stabilization, copying is enabled and the copy start indicator lights ifthe time from the main switch (MSW) being turned on has reached the following:29 s if the temperature detected by the fixing unit thermistor is 10°C/50°F or aboveand the external temperature is 15°C/59°F or above when the main switch (MSW) isturned on;44 s if the temperature detected by the fixing unit thermistor is below 10°C/50°F orthe external temperature is below 15°C/59°F when the main switch (MSW) is turnedon;5 s if the temperature detected by the fixing unit thermistor is 80°C/176°F or abovewhen the main switch is turned on.

E After copying has been enabled, the fixing temperature falls to 175°C/347°F and thecopier enters the standby state. The fixing heater (H) is then turned on and off asrequired to keep the fixing temperature at 175°C/347°F.

F 10 s after the copy start indicator has lit, the drive motor (DM) turns off.

195-1

1-3-36

• Correcting the fixing temperature controlThe fixing temperature is changed according to the temperature detected by theexternal temperature thermistor (ETTH) on the humidity sensor PCB (HUMPCB).When the temperature detected by the thermistor is 32°C/89.6°F or above, the fixingtemperature is 175°C/347°F during standby and 180°C/356°F during copying.When the temperature detected by the thermistor is below 32°C/89.6°F, the fixingtemperature is 175°C/347°F during standby and 185°C/365°F during copying.

Paper separation

Paper is separated in the fixing section by the separation claws as shown in Figure 1-3-34.

Heat rollerseparation claws

Heat roller

Figure 1-3-34 Paper separation

DC-1460 S/M (MCA)

ELECTRICALSECTION

II

II Ele

ctric

al S

ectio

n

195

2-1 Electrical Parts Layout2-1-1 Electrical parts layout ........................................................................ 2-1-1

195

2-1-1

2-1-1 Electrical parts layout

5

1

3

2

6

4

Machine front Machine inside Machine rear

Figure 2-1-1 Layout of electrical parts: PCBs

1. Main PCB (MPCB) ....................................... Controls the other PCBs and electricalcomponents.

2. Power source PCB (PSPCB) ....................... Generates 24 V and 5 V DC; suppliesAC to the AVR PCB; contains thesafety switch and noise filter.

3. AVR PCB (AVRPCB) ................................... Controls the halogen lamp and fixingheater.

4. High-voltage transformer PCB (HVTPCB) ... Performs main charging; generatesdeveloping bias and high voltage fortransfer charging.

5. Humidity sensor PCB (HUMPCB)................ Detects absolute humidity. 6. Operation unit PCB (OPCB) ........................ Consists of operation keys and display

LEDs.

195

2-1-2

Machine front Machine inside Machine rear

2

1

11

12

913

3

14

5 78

10

4

6

Figure 2-1-2 Layout of electrical parts: switches and sensors

1. Main switch (MSW) ......................................Turns the AC power on and off. 2. Safety switch (SSW) ....................................Breaks the safety circuit when the front

cover or release unit is opened, andresets paper jam detection.

3. Registration switch (RSW) ...........................Controls the secondary paper feed starttiming.

4. Eject switch (ESW) ......................................Detects a paper jam in the fixingsection.

5. AE sensor (AES) ......................................... Detects the original density. 6. Home position switch (HPSW) ....................Detects the scanner in the home

position. 7. Mirror home position switch (MHPSW) ........ Detects mirrors 2 and 3 in the home

positions. 8. Lens home position switch (LHPSW) .......... Detects the lens in the home position. 9. Toner sensor (TNS) ..................................... Detects the toner density in the

developing section.10. Fixing unit thermistor (FTH) .........................Detects the heat roller temperature.11. Humidity sensor (HUMSENS) ..................... Detects the external humidity.12. External temperature thermistor (ETTH) ..... Detects the external temperature.13. Developing unit fuse* (DEVF) ......................Blows to differentiate between old and

new developing units.14. Toner cartridge detection switch ..................Detects the presence or absence of the

(TCDSW) toner cartridge.* Standard equipment only for 120 V, 220 V and 240 V specifications.

195-1

195

2-1-3

Machine front Machine inside Machine rear

2 7

3

1

9

85

10

64

Figure 2-1-3 Layout of electrical parts: motors and clutches

1. Drive motor (DM) ......................................... Drives the machine. 2. Scanner motor (SM) .................................... Drives the optical system. 3. Lens motor (LM) ..........................................Drives the lens. 4. Mirror motor (MM) ........................................ Drives mirrors 2 and 3. 5. Toner feed motor (TFM) .............................. Replenishes toner. 6. Optical section fan motor (OPFM) ............... Cools the optical system. 7. Fixing unit fan motor (FFM) ......................... Cools the fixing section. 8. Internal cooling fan motor (ICFM) ................ Cools the machine interior. 9. Paper feed clutch (PFCL) ............................ Performs primary paper feed from the

paper drawer.10. Registration clutch (RCL) ............................ Performs secondary paper feed.

195

2-1-4

Machine front Machine inside Machine rear

4

7 1

2 35, 6

8

9

Figure 2-1-4 Layout of electrical parts: other electrical parts

1. Halogen lamp (HL) ......................................Performs exposure. 2. Cleaning lamp (CL) ......................................Removes residual charge from the

drum surface. 3. Blank lamps (BL) ......................................... Remove charge from non-image

forming areas of the drum surface. 4. Fixing heater (H) ..........................................Heats the heat roller. 5. Fixing unit thermostat 1 (TH1) ..................... Prevents overheating in the fixing

section. 6. Fixing unit thermostat 2 (TH2) ..................... Prevents overheating in the fixing

section. 7. Optical section thermostat (TH3) ................. Prevents overheating in the optical

system. 8. Total counter (TC) ....................................... Displays the total number of copies

produced. 9. Dehumidifying heater (DH)* .........................Dehumidifies the machine interior. * Option available only for 120 V specifications.

195

2-2 Detection of Paper Misfeeds2-2-1 Paper misfeed detection ................................................................... 2-2-12-2-2 Paper misfeed detection conditions .................................................. 2-2-2

195

2-2-1

2-2-1 Paper misfeed detection

When a paper jam occurs, the copier immediately stops copying and the copy quantity/magnification display on the operation unit shows PF, J01, J02 or J03 indicating thelocation of the jam. The letter J and the number alternates on the display.To remove paper jammed in the copier, open the release unit, drawer or eject sectioncover.The paper misfeed detection can be reset by opening and closing the front cover orrelease unit to turn the safety switch off and back on.

Alternates.

PF: No paper feed (or, no paper present in the drawer)J01: paper jam in the fixing sectionJ02: paper jam in the eject sectionJ03: paper jam in the registration section

Figure 2-2-1 Misfeed location indication

PFCLRCL

RSW

ESW

Figure 2-2-2 Misfeed detection

195

2-2-2

2-2-2 Paper misfeed detection conditions

No paper feed (PF)

• The registration switch (RSW) does not turn on within 1100 ms after the paper feedclutch (PFCL) has turned on during drawer paper feed.

PFCL

1100 ms

On

Off

On

OffRSW

Timing chart 2-2-1

Paper jam in the registration section (J03)

• The registration switch (RSW) does not turn off within 4000 ms after the registrationclutch (RCL) has turned on.

RCL

4000 ms

On

Off

On

OffRSW

Timing chart 2-2-2

Paper jam in the fixing section (J01)

• The eject switch (ESW) does not turn on within 1668 ms after the registration clutch(RCL) has turned on.

RCL

1668 ms

On

Off

On

OffESW

Timing chart 2-2-3

195

2-2-3

Paper jam in the eject section (J02)

• The eject switch (ESW) does not turn off within 2000 ms after the registration switch(RSW) has turned off.

RSW

2000 ms

On

Off

On

OffESW

Timing chart 2-2-4

195

2-3 Operation of the PCB2-3-1 Power source PCB ............................................................................ 2-3-12-3-2 Main PCB .......................................................................................... 2-3-22-3-3 AVR PCB .......................................................................................... 2-3-32-3-4 Operation unit PCB ........................................................................... 2-3-4

195

2-3-1

2-3-1 Power source PCB

+

PSPCB

PC1PC2

Q1

C9

T1

MSW SSW

ACinput

Noise filter circuit 1 L1

Noise filtercircuit 2 L3

Rectify-ingcircuit DB1

Switchingcircuit IC1

Output feedbackcircuit

24 V DC smoothing/output circuit D101/C102

24 VDC output

5 V DC output

5 V DC smoothing/outputcircuit IC201

Figure 2-3-1 Power source PCB block diagram

The power source PCB (PSPCB) consists of the circuit blocks shown in Figure 2-3-1and converts the AC input into stable 5 V and 24 V DC outputs.Noise filter circuit 1 consists of choke coil L1, a resistor and capacitor. These attenuateexternal noise and prevent noise generated by the electrical components from escapingout of the copier via the AC line. Noise filter circuit 2 attenuates any external noise thathas passed through noise filter circuit 1 and prevents the switching noise generated inthe power source PCB from escaping out via the AC line. The AC input is full-waverectified by diode bridge DB1 and then smoothed by smoothing capacitor C9. Theswitching circuit turns FET Q1 on and off via switching control IC1, turning current to theprimary coil of switching transformer T1 on and off. The 24 V DC smoothing/outputcircuit converts the potential induced across the secondary coil of T1 into a stable 24 VDC output via diode D101 and smoothing capacitor C102. The 5 V DC smoothing/output circuit converts the potential induced across the other secondary coil of T1 into astable 5 V DC output via regulator IC201. Switching control IC1 regulates the 24 V DCsupply by controlling the switching operation of FET Q1 depending on the signal fedback by the output feedback circuit via photocoupler PC1. If an overvoltage occurs onthe 24 V or 5 V DC output, the output feedback circuit sends that information to switchcontrol IC1 via photocoupler PC2, inhibiting IC1.

195

2-3-2

2-3-2 Main PCB

HVTPCB

RSWESW

PFCLRCL

Scanning-relatedswitchesand sensors

OPCB

TNS

Driver ICIC17

EPROMIC15

CPUIC12OP

FM

MM

FFM

LM

SM

DM

CL

FTH

H

HLScanner motor drivecircuit IC11

MPCB AVRPCB

AVR circuit

HL REM

H REM

Shortedthermistordetectioncircuit

Reset IC IC1

Figure 2-3-2 Main PCB block diagram

The main PCB (MPCB) consists of the CPU and control circuits that regulate theelectrical components during the copying process.Based on the control programs in EPROM IC15, CPU IC12 controls the overall copiersystem: the drive motor, scanning-related motors, switches and sensors, toner sensor(TNS), clutches and switches in the paper feed, registration and eject sections; andsends out MC and TC remote signals to the high-voltage transformer PCB (HVTPCB).The halogen lamp (HL) and the fixing heater (H) are also controlled by the main PCBvia the AVR PCB (AVRPCB).

195

2-3-3

2-3-3 AVR PCB

Flickerresistor

Flicker REM

H REM

HL CONTH

HL

TRC1

PC3

TRC2

PC2

PC1

PWM signal/voltage converter circuit

Halogen lamp light intensity control IC (HIC)

TRC3

PC5

AVRPCB MPCB

AC input

Figure 2-3-3 AVR PCB block diagram

The AVR PCB (AVRPCB) consists of two major sections: the halogen lamp controlsection with the PWM signal/voltage converter circuit and halogen lamp light intensitycontrol IC (HIC), and the switching section with triacs TRC1, TRC2 and TRC3 that turnthe fixing heater (H), flicker resistor* and halogen lamp (HL) on and off.Control signal H REM from the main PCB turns photocoupler PC2 on when low. Thisapplies a trigger voltage to the gate of triac TRC2, causing it to conduct and allowcurrent to flow to the fixing heater (H) to turn it on. The flicker resistor* limits the surgegenerated by the fixing heater (H) being turned on. The Flicker REM signal from themain PCB turns photocoupler PC5 on when low. This applies a trigger voltage to thegate of triac TRC3, causing it to conduct and allow current to the flicker resistor tooperate it. The halogen lamp (HL) light intensity is controlled by control signal HL CONTfrom the main PCB. HL CONT is a PWM signal turned on and off at a duty ratio set bythe halogen lamp light intensity data. This signal is converted into a voltage by the PWMsignal/voltage converter circuit and is output to the halogen lamp light intensity controlIC (HIC). This adjusts the phase of the trigger which turns photocoupler PC3 on, basedon the halogen lamp light intensity data converted into a voltage, using an internal zero-crossing signal as a reference. The phase-shifted trigger applied to the gate of triacTRC1 changes the amount of current flowing to the halogen lamp (HL), regulating thehalogen lamp light intensity.* For 230 V specifications and optional for 240 V specifications.

195

2-3-4

2-3-4 Operation unit PCB

P G

S

24 V DC

Source driver

Sink driver

5 V DC

LEDsand 7-seg LEDs

Key switches

OPCB MPCB

KEY 0

DIG 5DIG 6

DIG 4DIG 3DIG 2DIG 1DIG 0

BL

SE

G a

BL

SE

G b

BL

SE

G c

BL

SE

G d

BL

SE

G e

BL

DIG

5B

L D

IG 6

SEG fSEG g

SEG eSEG dSEG cSEG bSEG a

KEY 1

Blank lamps

Figure 2-3-4 Operation unit PCB block diagram

The operation unit PCB (OPCB) consists of LEDs, 7-segment LEDs and key switchesarranged in matrix.To light an LED or 7-segment LED, the main PCB (MPCB) turns on one of the sourcedrivers for lines SEG a to SEG g to allow current to the line on which the LED or 7-segment LED to be lit is present. Scan signals which go low in sequence are constantlyoutput to the sink drivers for lines DIG 0 to DIG 5, so current flows through the LED forwhich the two signals are low simultaneously.The status of key switches is detected by return signals KEY 0 and KEY 1. When noneof the keys on the operation panel is pressed, each line of return signals KEY 0 andKEY 1 is pulled high to 5 V DC by the main PCB (MPCB). The main PCB (MPCB)outputs scan signals that go low in sequence to the sink drivers for lines DIG 0 to DIG 4,so when a key is pressed, the key switch conducts and the return signal goes low dueto the scan signal. The main PCB (MPCB) identifies the specific key by the location ofthe point where the line emitting the scan signal and the line with the low return signalmeet.The operation unit PCB (OPCB) also controls the blank lamps which are 28 LEDs. Tolight the blank lamps, the main PCB (MPCB) turns on the source drivers for lines BLSEG a to BL SEG e to allow current to the lines on which the blank lamps to be lit are

195

2-3-5

present. Scan signals which go low in sequence are constantly output to the sink driversfor lines BL DIG 5 and BL DIG 6, so current flows through the LEDs for which the bothsignals are low simultaneously.

DC-1460 S/M (MCA)

III S

et U

p an

d A

djus

tmen

t Sec

tion

III

SET UP ANDADJUSTMENT

SECTION

195

3-1 Installation3-1-1 Unpacking and installation ................................................................ 3-1-1

( 1 ) Installation environment ............................................................ 3-1-1( 2 ) Installation procedure ................................................................ 3-1-2

3-1-2 Setting initial copy modes ............................................................... 3-1-103-1-3 Installing the dehumidifier heater (optional, 120 V

specifications only) .......................................................................... 3-1-113-1-4 Installing the flicker resistor (optional, 240 V/50 Hz

specifications only) .......................................................................... 3-1-13

195-1

3-1-1

195

3-1-1 Unpacking and installation

( 1 ) Installation environment 1. Temperature and humidity: 10°C/50°F to 35°C/95°F, 15 - 85% RH 2. Power supply: 120 V AC, 12 A, 220 - 240 V AC, 8 A 3. Power source frequency: 50/60 Hz ± 0.3% 4. Installation location

• Avoid direct sunlight or bright lighting. Make sure that the photoconductor will notbe exposed to direct sunlight or other strong light when removing paper jams.

• Avoid extremes of temperature and humidity, abrupt ambient temperaturechanges, and hot or cold air directly hitting the machine.

• Avoid dust and vibration.• Choose a surface capable of supporting the weight of the machine.• Place the machine on a level surface (maximum allowable inclination: 1°).• Avoid airborne substances that may adversely affect the machine or degrade the

photoconductor, such as mercury, acidic and alkaline vapors, inorganic gases,NOx, SOx gases and chlorine-based organic solvents.

• Select a room with good ventilation. 5. Allow sufficient access for proper operation and maintenance of the machine.

Machine front: 1000 mm/393/8" Machine rear: 100 mm/315/16"Machine right: 100 mm/315/16" Machine left: 300 mm/1113/16"

ea

c

d

b

f

a: 515 mm/201/4" c: 320 mm/125/8" e: 780 mm/3011/16"b: 465 mm/185/16" d: 775 mm/301/2" f: 660 mm/26"

Figure 3-1-1 Installation dimensions

3-1-2

195

( 2 ) Installation procedure

Completion of machine installation.

Carry out initial developer setting.

Install a toner cartridge.

Install the copy tray.

Make test copies.

Remove the tapes.

Remove the pins.

Remove the developing unit spacer.

Remove the developing unit seal (inch specifications only).

Load developer (metric specifications only).

Start

Unpack. Apply fixing pressure.

Light source unit 2 pin

Lens unit pin

Copy tray

Light source unit 1 pins

Figure 3-1-2

195-1

3-1-3

195

36

7

0

4

!

5

9

$

@2

1

!

#

A

A

Figure 3-1-3 Unpacking

1 Bottom pads 8 Copier2 Top pads 9 Copy tray3 Outer case 0 Power cord4 Plastic sheet ! Tag5 Plastic bag @ Instruction handbook6 Bar code labels # Plastic bag7 Inner frame $ Developing unit spacer

Unpack.

195-1

3-1-4

195

1. Remove the tapes holding the original holder.

Tapes

Tapes

Figure 3-1-4

1. Remove the tapes holding the two light source unit 1 pins and one light sourceunit 2 pin on the machine right, and remove these pins.

Light source unit 1 pins

Light source unit 2 pin

Figure 3-1-5

Remove the tapes.

Remove the pins.

195-1

3-1-5

195

2. Open the front cover, and remove the tape holding the lens unit pin and thenthe pin.

Lens unit pin

Figure 3-1-6

1. Remove the tape and the developing unit spacer from the developing unit.

Developing unit spacer

Developing unit

Figure 3-1-6-1

Remove the developing unit spacer.

195-1

3-1-6

195

3-1-5-1

1. While holding the developing unit, peel off the developing unit seal.

Developing unit seal

Figure 3-1-7

Remove the developing unit seal (inch specifications only).

195-1

3-1-7

195

This page is intentionally left blank.

3-1-8

195

1. Unlock the developing unit release lever and take out the developing unit.Important : Place the developing unit on a level surface.

Developing unit

Figure 3-1-8

2. Remove the developing unit cover from the developing unit by pulling it in thedirection of the arrow (four screws).

Developing unit cover

Developing unit

Figure 3-1-9

Load developer (metric specifications only).

3-1-6

3-1-9

195

3. Shake the developer bottle well. 4. While turning the gear in the direction of the arrow, pour developer into the

developing unit so that it covers the entire developing roller uniformly.

Developing unit

gear

Figure 3-1-10

5. Refit the developing unit cover. 6. Reinsert the developing unit into the copier and lock the developing unit release

lever.

1. Press the release unit button to open the unit.

Rerease unit buttonRelease unit

Figure 3-1-11

2. Close the release unit. The fixing pressure is applied. 3. Close the front cover.

Apply fixing pressure.

3-1-7

3-1-10

195

• Inch specifications

1. Plug the power cord into the copier and the wall outlet. 2. Turn the main switch on. The copier starts its drive and automatically carries out

initial developer setting. It takes about 2 minutes. 3. Turn the main switch off and back on while pressing the print and stop/clear

keys. 4. Press the stop/clear key to enter simulation mode within 2 s after “ ” has been

displayed on the copy quantity/magnification display.

• Metric specifications

1. Plug the power cord into the copier and the wall outlet. 2. While pressing the print key and the stop/clear key at the same time, turn the

main switch on. 3. Within 2 s after the copy quantity/magnification display shows “ ”, press the

stop/clear key to enter simulation mode. 4. Enter 60 with the quantity/zoom-up or -down key and press the print key. 5. Press the print key. After about 2 minutes, the toner control voltage is

automatically set and the value is indicated as shown below: the integer isindicated by the fixed magnification indicators or auto exposure indicator, anddecimals are shown on the copy quantity/magnification display (See page 3-2-2).Example

If the value is 2.35 V

123

2.35 V

4

Figure 3-1-12

6. Press the stop/clear key.

Carry out initial developer setting.

3-1-8

195-1

3-1-11

195

3-1-8-1

1. Enter 93 with the quantity/zoom-up or -down keys and press the print key. 2. Change the setting with the quantity/zoom-up or down keys.

Setting0 12345

Metric, excluding Spain, Belgium, Peru, Australia and New ZealandInch, excluding the PhilippinesSpainBelgiumPeru, Australia and New ZealandThe Philippines

Contents

3. Press the print key. The new setting is stored. 4. Press the stop/clear key. 5. Enter 01 with the quantity/zoom-up or -down keys and press the print key. The

simulation mode is exited.

Setting the destination.

195-1

3-1-12

195

This page is intentionally left blank.

3-1-13

195

1. Open the front cover. 2. Shake the new toner cartridge well and insert it into the copier.

Toner cartridge

Figure 3-1-13

3. Close the front cover.

1. Install the copy tray to the eject section of the copier.

1. Place paper in the paper drawer and make test copies.

Install a toner cartridge.

Install the copy tray.

Make test copies.

Completion of machine installation.

3-1-9

3-1-14

195

3-1-2 Setting initial copy modes

Factory settings are as follows:

Selecting between auto preheat on/offSetting the presence of the flicker resistorSetting operation under the toner empty conditionSelecting between auto start on/offSetting the destinationSetting the memory switchSetting the maintenance methodSelecting between E2000-compliant function on/off

Factory settingOn

Not installed20 copies

OnMetric7 stepsUserNo

ContentsSim. No.8589919293969899

3-1-10

195-1

3-1-15

195

3-1-3 Installing the dehumidifier heater (optional, 120 Vspecifications only)

• Required partsDehumidifier heater (P/N 36727460)Heater primary wire (P/N 19560010)Binding taptight screw, M3 × 6 (P/N B3023060)

Procedure 1. Remove the right and rear covers. 2. Unplug all the connectors on the power source PCB and remove the PCB from the

copier (two screws).

Power source PCB

Figure 3-1-14

3. Fit the dehumidifier heater to the copier with the two M3 × 6 binding taptight screws.

Dehumidifier heater

Binding taptight screws, M3×6

Figure 3-1-15

3-1-11

3-1-16

195

4. Remove the copier primary wire from the AVR PCB and connect the heater primarywire in place of it.

AVR PCB

Heater primary wire

Figure 3-1-16

5. Plug the 2-pin connector of the heater primary wire into the dehumidifier heater.

2-pin connector

Dehumidifier heater

Heater primary wire

Figure 3-1-17

6. Refit all the removed parts.

3-1-12

3-1-17

195

3-1-13

3-1-4 Installing the flicker resistor (optional, 240 V/50 Hzspecifications only)

• Required partsResistor wire (P/N 19527230)Resistor, 10Ω 40 W (P/N 36727600)Resistor, 10Ω 40 W 157 (P/N 36727610)Wire saddle, WS-2NS (P/N M2109010)Binding S tight screw, M4 × 6 (P/N B3024060)

Procedure 1. Remove the right and rear covers. 2. Unplug all the connectors on the power source PCB and remove the power source

PCB from the copier (two screws).

Power source PCB

Figure 3-1-18

3. Connect the resistor wire to the 10Ω 40 W resistor and 10Ω 40 W 157 resistor.

ΩResistor, 10 40 W 157

Resistor wire

Resistor, 10 40 WΩ

Figure 3-1-19

195-1

3-1-18

195

3-1-14

4. Attach the 10Ω 40 W and 10Ω 40 W 157 resistors to the copier with one M4 × 6binding S tight screw each.

5. Attach the wire saddle WS-2NS to the copier and pass the resistor wire through it.

Resistor, 10 40 W 157Ω Resistor wire

Resistor, 10 40 WΩ

Binding S tight screws M4 6×

Wire saddle, WS-2NS

Figure 3-1-20

6. Pass the resistor wire through the cutout in the copier and connect the 4-pinconnector to CN3 on the AVR PCB.

AVR PCB

Resistor wire

4-pin connector CN3

Figure 3-1-21

7. Refit the removed parts. 8. Turn the main switch on and change the setting of simulation 89 to 1 (installed).

195-1

195

3-2 Simulation3-2-1 Simulations ........................................................................................ 3-2-1

( 1 ) Running a simulation ................................................................. 3-2-1( 2 ) Simulation list ............................................................................ 3-2-4( 3 ) Contents of simulations ............................................................. 3-2-5

3-2-1

195

3-2-1 SimulationsThe copier is equipped with a simulation function which can be used to check andadjust the operation of copier components.

( 1 ) Running a simulation

Start

End

While pressing the print key and stop/clear key at the same time, turn the main switch on.

Press the stop/clear key within 2 s.

Enter 01 with the quantity/zoom-up and -down keys and press the print key.

Enter the number of the simulation to be executed with the quanti-ty/zoom-up and -down keys*1.

Press the print key.

The simulation is run.*1 Press the quantity/zoom-up key

to change the 10s digit and the quantity/zoom-down key to change the 1s digit.

Press the stop/clear key.

No

Yes

Yes

No

Run again?

Run another simulation?

· · · · · · · Simulation mode is entered.

· · · · · · · A simulation is selected.

“ ” is shown on the copy quantity/magnification display.

· · · · · · · · · · · · · · · · · · · · · ·

“00” is shown on the copy quantity/magnification display.

· · · · · · · · · · · · · · · · · · · · · ·

The selected simulation number is shown on the copy quantity/magnification display.

· · · · · · · · · · · · · · · · · · · · · ·

· · · · · · · Simulation mode is exited.

3-2-2

195

• Indication of the set valuesWhen a set value includes decimals, it is indicated as shown below: the integer isshown by the fixed magnification indicators or auto exposure indicator, and decimalsare shown on the copy quantity/magnification display.

Example

If the value is 2.35 V

Metric

Inch

Figure 3-2-1

123

2.35 V

4

123

2.35 V

4

3-2-3

195

• Indication of the selected modeIn a simulation with multiple modes, one of the exposure indicators lights to show theselected mode. Use the exposure adjustment keys to change the modes.

Metric

Inch

Figure 3-2-2

Mode

Exposure adjustment keys

Mode

Exposure adjustment keys

3-2-4

195

SectionSim.

Simulation contents DefaultNo.

( 2 ) Simulation list

All

Paperfeed/conveying

Optical

Charging

Cleaning

Fixing

Operationpanel

Developing

Memoryinitialize

Counts

01 Exiting simulation mode

02 Copying without paper

08 Setting shipping defaults

10 Turning the drive motor on

11 Checking switch operation

54 Adjusting the leading edge margin

57 Adjusting the trailing edge blank cut timing

58 Adjusting the leading edge registration timing

59 Adjusting the trailing edge margin

20 Turning the halogen lamp on

24 Setting the exposure amount

25 Adjusting lateral magnification

26 Adjusting longitudinal magnification

27 Making fine adjustment to image focus

28 Adjusting the auto exposure

29 Adjusting exposure amount for enlargement/reduction mode

33 Setting the drum potential

42 Making a blank lamp test copy

47 Setting the fixing temperature

50 Lighting all the LEDs on the operation panel

60 Initializing the toner control level

62 Checking/setting the toner control voltage

67 Checking ambient temperature and humidity

70 Initializing the backup memory

71 Checking/setting the maintenance cycle

73 Checking/clearing the maintenance count

30000

Cleared

195-1

3-2-5

195

SectionSim.

Simulation contents DefaultNo.

Copymodes

85 Selecting between auto preheat on/off

89 Setting the presence of the flicker resistor

91 Setting operation under the toner empty condition

92 Selecting between auto start on/off

93 Setting the destination

96 Setting the memory switch

98 Setting the maintenance method

99 Selecting between E2000-compliant function on/off

On

Not installed

20 copies

On

Metric

7 steps

User

No

195-1

3-2-4-1

3-2-6

195

This page is intentionally left blank.

195

Sim.No.

Description

01 Exiting simulation mode

DescriptionExits simulation mode and returns to normal mode.

PurposeUsed when ending simulation mode.

MethodPress the print key. The copier returns to normal mode.

02 Copying without paper

DescriptionMakes copies without feeding paper.

PurposeTo check general machine operation.

Method 1. Put a plain white A4 original in place.

2. Open the drawer.

3. Select copy modes and press the print key to start copying. The copieroperates according to the selected modes.

CompletionPress the stop/clear key. Copying operation stops.

08 Setting shipping defaults

DescriptionMoves the scanner to the shipping position.

PurposeTo be run before moving the machine.

MethodPress the print key.

Important: Since this simulation clears the maintenance count, runsimulation 73 and check it beforehand.

CompletionPress the stop/clear key.

(3) Contents of simulations

3-2-5

195

Sim.No.

Description

10 Turning the drive motor on

DescriptionOperates the drive motor.

PurposeTo check the drive system operation.

MethodPress the print key. The drive motor, cleaning lamp and developing bias areturned on, and the fixing unit fan motor rotates at full speed.

CompletionPress the stop/clear key. The fixing unit fan motor slows to half speed andthe other components are turned off.

11 Checking switch operation

DescriptionShows the status of the registration and eject switches.

PurposeTo check if the registration and eject switches are defective.

MethodTurn each switch on and off manually. The copy quantity/magnificationdisplay shows the status of the switch.

CompletionPress the stop/clear key.

On

01

10

Registration switch

Eject switch

Off

00

00

3-2-6

195

Sim.No.

Description

20 Turning the halogen lamp on

DescriptionLights the halogen lamp.

PurposeTo check the halogen lamp operation.

Method 1. Select an exposure level with the exposure adjustment keys.

2. Press the print key. The halogen lamp lights at the selected intensity for15 s.

CompletionPress the stop/clear key. The halogen lamp is turned off.

24 Setting the exposure amount

AdjustmentSee page 3-3-37.

25 Adjusting lateral magnification

AdjustmentSee page 3-3-45.

26 Adjusting longitudinal magnification

AdjustmentSee page 3-3-49.

27 Making fine adjustment to image focus

AdjustmentSee page 3-3-32.

28 Adjusting the auto exposure

AdjustmentSee page 3-3-41.

29 Adjusting exposure amount for enlargement/reduction mode

AdjustmentSee page 3-3-42.

3-2-7

195

Sim.No.

Description

33 Setting the drum potential

DescriptionSets the drum potential.

PurposeTo be run when adjusting the developing bias.

MethodPress the print key. The drum potential setting starts.

CompletionPress the stop/clear key.

42 Making a blank lamp test copy

DescriptionLights the blank lamps.

PurposeTo check blank lamp operation.

Method 1. Load a sheet of the maximum size.

2. Open the original holder.

3. Press the zoom input/enter key. Test copy mode is entered.

4. Press the print key. The blank lamps light in a preset order and thepattern shown below is printed to check operation.

Figure 3-2-3

CompletionPress the stop/clear key.

195-1

3-2-8

195

Sim.No.

Description

47 Setting the fixing temperature

DescriptionChanges the fixing heater control value to adjust the fixing temperature.

PurposeTo be run when a fixing problem occurs.

Setting 1. Select the mode to be set with the exposure adjustment keys. The

current setting for that mode is indicated by the combination of lightingof one of the fixed magnification indicators or the auto exposureindicator and the figures on the copy quantity/magnification display.

2. Change the setting with the quantity/zoom-up and -down keys.Changing the value by one changes the temperature by 0.6°C when thefixing temperature is 180°C and 0.3°C when it is 80°C.

3. Press the print key. The new setting is stored.

CompletionPress the stop/clear key.

50 Lighting all the LEDs on the operation panel

DescriptionLights all the LEDs on the operation panel.

PurposeTo check the operation of the LEDs on the operation panel.

MethodPress the print key. All the LEDs on the operation panel light.

CompletionPress the stop/clear key. The LEDs turn off.

Mode

1

2

3

4

5

Contents Setting range

1.70 to 4.45 V

3.41 to 4.45 V

3.41 to 4.45 V

3.41 to 4.45 V

0.39 to 4.45 V

Initial value

3.98 V (175°C)

4.15 V (185°C)

4.15 V (185°C)

4.21 V (189°C)

1.05 V (80°C)

Standby

Fixing (secondary) stabilization

During copying

During ejection

Fixing drive start

3-2-9

195-1

195

Sim.No.

Description

54 Adjusting the leading edge margin

AdjustmentSee page 3-3-7.

57 Adjusting the trailing edge blank cut timing

AdjustmentSee page 3-3-9.

58 Adjusting the leading edge registration timing

AdjustmentSee page 3-3-5.

59 Adjusting the trailing edge margin

AdjustmentSee page 3-3-11.

60 Initializing the toner control level (metric specifications only)

DescriptionSets the toner control voltage automatically.

PurposeTo be run during machine setup or after replacing developer or thedeveloping unit.

MethodPress the print key. The drive motor turns on and aging is carried out forabout 2 minutes. The toner control voltage is automatically set and thevalue is indicated by the combination of lighting of one of the fixedmagnification indicators or the auto exposure indicator and the figures onthe copy quantity/magnification display.

CompletionPress the stop/clear key.

3-2-10

195

Sim.No.

Description

62 Checking/setting the toner control voltage

DescriptionChecks the initial toner control voltage automatically set by simulation 60, orsets the toner control voltage.

PurposeTo be run after replacing the main PCB.

MethodPress the print key. The current setting is indicated by the combination oflighting of one of the fixed magnification indicators or the auto exposureindicator and the figures on the copy quantity/magnification display.

Setting 1. Change the value with the quantity/zoom-up and -down keys.

Setting range: 0.00 to 5.00 V

Reference: 3.00 V

2. Press the print key. The drive motor turns on and the new toner controlvoltage is indicated by the combination of lighting of one of the fixedmagnification indicators or the auto exposure indicator and the figureson the copy quantity/magnification display.

CompletionPress the stop/clear key.

67 Checking ambient temperature and humidity

DescriptionDisplays ambient temperature and humidity.

PurposeTo check if the humidity sensor has a problem.

Method 1. Press the print key.

2. Select the mode to be checked with the exposure adjustment keys.

Mode 1: temperature

Mode 2: relative humidity

Mode 3: absolute humidity

CompletionPress the stop/clear key.

3-2-11

195

Sim.No.

Description

70 Initializing the backup memory

DescriptionInitializes the contents of the backup memory.

PurposeTo be run after replacing the main PCB.

Method 1. Press the print key.

2. Press the exposure mode key. The following data in memory isinitialized.

Sim No.

24

25

2627

28

29

47

54

57

62–1830

00013

00003232

803.50 V2.00 V

01

3.90 V4.05 V4.05 V4.21 V1.05 V

13114012784

Exposure amountManual Exp. 4Manual Exp. 1Manual Exp. +2Lateral magnification (lens travel distance)100% copyEnlargement copyReduction copyLongitudinal magnificationFine adjustment of image focusLens home position for enlargement copyLens home position for reduction copyMirror home position for enlargement copyMirror home position for reduction copyLens home position for 100% copyMirror home position for 100% copyAuto exposurePrescan exposure amountNTC levelNPTC levelEnlargement/reduction-mode exposure amountEnlargement copyReduction copyFixing temperatureStandbyFixing (secondary) stabilizationDuring copyingDuring ejectionFixing drive startLeading edge margin100% copyEnlargement copyReduction copyTrailing edge blank cut timing

Contents Initial data

3-2-12

195-1

195

Sim.No.

Description

70(cont.)

CompletionPress the stop/clear key. After running simulation 70, run the abovesimulations and reenter the settings recorded on the simulation label.

Sim No.

58

596271738589919293969899

1081219195

3.00 V30000Cleared

OnNot installed

20 copiesOn

Metric7 stepsUserNo

Leading edge registration timing100% copyEnlargement copyReduction copyTrailing edge marginToner control voltageMaintenance cycleMaintenance countAuto preheatSetting the presence of the flicker resistorOperation under toner empty conditionAuto startDestinationMemory switch settingMaintenance methodE2000-compliant function

Contents Initial data

3-2-13

195-1

195

Sim.No.

Description

71 Checking/setting the maintenance cycle

DescriptionChecks/sets the maintenance cycle.

PurposeTo be run after replacing the main PCB.

MethodPress the print key. The current setting is shown on the copy quantity/magnification display.

Mode 1: 100,000s and 10,000s digits

Mode 2: 1,000s and 100s digits

Mode 3: 10s and 1s digits

Setting 1. Select the mode to be set with the exposure adjustment keys.

2. Change the setting with the quantity/zoom-up and -down keys.

Setting range: 0 to 999999

Reference: 30000

3. Press the print key. The new setting is stored.

CompletionPress the stop/clear key.

3-2-14

195

Sim.No.

Description

73 Checking/clearing the maintenance count

DescriptionChecks/resets the maintenance count.

PurposeTo be run after replacing the drum and developing units, or before and afterreplacing the main PCB or running simulation 08 (Setting shipping defaults).

MethodPress the print key. The current count is shown on the copy quantity/magnification display.

Mode 1: 100,000s and 10,000s digits

Mode 2: 1,000s and 100s digits

Mode 3: 10s and 1s digits

Setting 1. Select the mode to be set with the exposure adjustment keys.

2. Change the value with the quantity/zoom-up and -down keys.

Setting range: 0 to 999999

Reference: 0

To clear the count, set every digit to 0.

3. Press the print key. The new setting is stored.

CompletionPress the stop/clear key.

3-2-15

195

Sim.No.

Description

85 Selecting between auto preheat on/off

DescriptionTurns the auto preheat function on/off.

PurposeTo be set according to user request.

Setting 1. Change the setting with the quantity/zoom-up and -down keys.

0: Auto preheat function off

1: Auto preheat function on

2. Press the print key. The new setting is stored.

CompletionPress the stop/clear key.

89 Setting the presence of the flicker resistor (240 V/50 Hz specificationsonly)

DescriptionSets the presence of the flicker resistor.

MethodTo be run after the installation of the optional flicker resistor.

Setting 1. Change the setting with the quantity/zoom-up or -down keys.

0: Flicker resistor not installed

1: Flicker resistor installed

Reference: 0

2. Press the print key. The new setting is stored.

CompletionPress the stop/clear key.

3-2-16

195-1

195

Sim.No.

Description

91 Setting operation under the toner empty condition

DescriptionSets the maximum number of copies that can be made under the tonerempty condition.

PurposeTo be set according to user request.

Setting 1. Change the setting with the quantity/zoom-up and -down keys.

Setting range: 0 to 199

Reference: 20

2. Press the print key. The new setting is stored.

CompletionPress the stop/clear key.

3-2-16-1

195-1

195

This page is intentionally left blank.

195

Sim.No.

Description

92 Selecting between auto start on/off

DescriptionTurns the auto start function on/off.

PurposeTo be set according to user request.

Setting 1. Change the setting with the quantity/zoom-up and -down keys.

0: Auto start function off

1: Auto start function on

2. Press the print key. The new setting is stored.

CompletionPress the stop/clear key.

93 Setting the destination

DescriptionSets the destination of the machine.

PurposeTo be run after replacing the main PCB or machine installation.

Setting 1. Change the setting with the quantity/zoom-up and -down keys.

2. Press the print key. The new setting is stored.

CompletionPress the stop/clear key.

Setting

0

1

2

3

4

5

Metric, excluding Spain, Belgium, Peru,

Australia and New Zealand

Inch, excluding the Philippines

Spain

Belgium

Peru, Australia and New Zealand

The Philippines

Contents

3-2-17

195-2

195

Sim.No.

Description

96 Setting the memory switch

DescriptionSets the number of exposure steps for manual mode and the copy limit.

PurposeTo change the number of exposure steps for manual mode or the copy limit.The limit can be set to any number between 1 and 99.

Setting 1. Select the mode with the exposure adjustment keys.

Mode 1: Setting the number of exposure steps for manual mode

Mode 2: Setting the copy limit

2. Change the setting with the quantity/zoom-up and -down keys.

• Mode 1

0: 7 steps

1: 13 steps

Initial value: 0

• Mode 2

Setting range: 1 - 99

Initial value: 99

The setting in mode 2 indicates the limit to the number of copies that can beset on the operation panel. The operation of the quantity/zoom-up key (10sdigit) and quantity/zoom-down key (1s digit) is restricted as in the followingexamples.

• When the setting (the copy limit) is 1

3-2-18

195-2

1s digit

10s digit

1

none (not available)

Copy quantity display

195

Sim.No.

Description

• When the setting (the copy limit) is 5

• When the setting (the copy limit) is 10

• When the setting (the copy limit) is 25

• When the setting (the copy limit) is 50

3-2-18-1

1s digit

10s digit none (not available)

Copy quantity display1 2 3 4 5

1s digit

10s digit

0 is displayed only when the 10s digit is 1.

Copy quantity display1 2 3 4 5 6 7 8 9

none 1

1 can be selected only when the 1s digit is 1.

10s digit

1s digit 0 cannot be selected when there is no tens digit.

When the 10s digit is 2, only numbers between 0 and 5 can be selected.

Copy quantity display1 2 3 4 5 6 7 8 9 0

none 1 2

2 can be selected only when the 1s digit is between 0 and 5.

1s digit

10s digit

0 cannot be selected when there is no tens digit.

Copy quantity display1 2 3 4 5 6 7 8 9 0

none 1 2 3 4 5

5 can be selected only when the 1s digit is 0.

96(cont.)

195-2

195

Sim.No.

Description

• When the setting (the copy limit) is 99

3. Press the print key. The new setting is stored.

CompletionPress the stop/clear key.

3-2-18-2

1s digit

10s digit

0 cannot be selected when there is no tens digit.

Copy quantity display1 2 3 4 5 6 7 8 9 0

none 1 2 3 4 5 6 7 8 9

96(cont.)

195-2

195

Sim.No.

Description

98 Setting the maintenance method (available in Peru, Australia and NewZealand only)

DescriptionSets whether the machine is to be serviced by the user or by servicepersonnel.

PurposeTo be set according to user request.

Setting 1. Change the setting with the quantity/zoom-up and -down keys.

0: User maintenance

1: Service maintenance

2. Press the print key. The new setting is stored.

CompletionPress the stop/clear key.

3-2-18-3

195-2

This page is intentionally left blank.

195

3-3 Assembly and Disassembly3-3-1 Precautions for assembly and disassembly ...................................... 3-3-1

( 1 ) Precautions ............................................................................... 3-3-13-3-2 Paper feed section ............................................................................ 3-3-2

( 1 ) Detaching and refitting paper feed pulleys A and B .................. 3-3-2( 2 ) Replacing the feedshift films ..................................................... 3-3-4( 3 ) Adjustments after installing roller and clutches ......................... 3-3-5

(3-1) Adjusting leading edge registration timing ........................ 3-3-5(3-2) Adjusting the leading edge margin ................................... 3-3-7(3-3) Adjusting the trailing edge blank cut timing ...................... 3-3-9(3-4) Adjusting the trailing edge margin .................................. 3-3-11

3-3-3 Main charging section ..................................................................... 3-3-13( 1 ) Replacing the charger wire ...................................................... 3-3-13

3-3-4 Exposure section ............................................................................. 3-3-16( 1 ) Detaching and refitting the halogen lamp ................................ 3-3-16( 2 ) Detaching and refitting the optical section thermostat ............. 3-3-17( 3 ) Adjusting the positions of the light adjusters ........................... 3-3-18( 4 ) Detaching and refitting the scanner wires ............................... 3-3-19

(4-1) Detaching the scanner wires .......................................... 3-3-19(4-2) Installing the scanner wires ............................................ 3-3-21

( 5 ) Adjusting longitudinal image squareness(inclination of light source 2) .................................................... 3-3-30

( 6 ) Adjusting lateral image squareness(height of light source 2) .......................................................... 3-3-31

( 7 ) Making fine adjustment to image focus .................................... 3-3-32(7-1) Adjusting the mirror home position for

100% copying .................................................................. 3-3-33(7-2) Adjusting the mirror home position for

enlargement mode ........................................................... 3-3-35(7-3) Adjusting the mirror home position for

reduction mode ................................................................ 3-3-36( 8 ) Setting the exposure amount .................................................. 3-3-37( 9 ) Adjusting the auto exposure .................................................... 3-3-41(10) Adjusting exposure amount for enlargement

/reduction mode. ...................................................................... 3-3-42(10-1) Adjusting exposure amount for enlargement mode

(141%) ......................................................................... 3-3-43(10-2) Adjusting exposure amount for reduction mode

(70%) ........................................................................... 3-3-44(11) Adjusting lateral magnification

(correcting the lens travel distance) ........................................ 3-3-45(11-1) Correcting the lens travel distance for

100% copying .............................................................. 3-3-46(11-2) Correcting the lens travel distance for

enlargement copying.................................................... 3-3-47(11-3) Correcting the lens travel distance for

reduction copying ......................................................... 3-3-48(12) Adjusting longitudinal magnification (scanning speed) ............ 3-3-49

195-1

3-3-5 Drum section (metric specification only) ......................................... 3-3-50( 1 ) Detaching and refitting the drum ............................................. 3-3-50( 2 ) Cleaning the drum ................................................................... 3-3-52

3-3-6 Developing section (metric specification only) ................................ 3-3-53( 1 ) Replacing developer ................................................................ 3-3-53( 2 ) Adjusting the formation position of the magnetic

brush (reference) .................................................................. 3-3-54-1( 3 ) Adjusting developing bias voltage (reference) ..................... 3-3-54-2

3-3-7 Transfer section .............................................................................. 3-3-55( 1 ) Replacing the charger wires .................................................... 3-3-55

3-3-8 Cleaning section (metric specification only) .................................... 3-3-59( 1 ) Replacing the cleaning blade .................................................. 3-3-59( 2 ) Detaching and refitting the lower cleaning blade ..................... 3-3-61

3-3-9 Fixing section .................................................................................. 3-3-62( 1 ) Detaching and refitting the fixing heater .................................. 3-3-62( 2 ) Detaching and refitting the fixing unit thermistor ..................... 3-3-65( 3 ) Detaching and refitting fixing thermostats 1 and 2 .................. 3-3-66( 4 ) Detaching and refitting the press roller .................................... 3-3-67( 5 ) Detaching and refitting the heat roller ..................................... 3-3-69( 6 ) Detaching and refitting the heat roller separation claws .......... 3-3-71( 7 ) Detaching and refitting the fixing blade ................................... 3-3-72

195

3-3-1

3-3-1 Precautions for assembly and disassembly

( 1 ) Precautions• Be sure to turn the main switch off and disconnect the power plug before starting

disassembly.• When handling PCBs, do not touch connectors with bare hands or damage the board.• Do not touch any PCB containing IC’s with bare hands or any object prone to static

charge.• Use only the specified parts to replace the fixing unit or optical section thermostats.

Never substitute simple wire or similar for thermostats since the copier may beseriously damaged. When installing a thermostat, ensure the correct clearance, ifspecified, using a thickness gauge.

• Use the following testers when measuring voltages:Hioki 3200Sanwa MD-180CSanwa YX-360TRBeckman TECH300Beckman DM45Beckman 330 (capable of measuring RMS values)Beckman 3030 (capable of measuring RMS values)Beckman DM 850 (capable of measuring RMS values)Fluke 8060A (capable of measuring RMS values)Arlec DMM1050Arlec YF1030C

• Prepare the following as test originals: 1. NTC (new test chart) 2. NPTC (newspaper test chart) 3. Blue graph paper

195

3-3-2

3-3-2 Paper feed section

( 1 ) Detaching and refitting paper feed pulleys A and BClean or replace paper feed pulleys A or B as follows.

Procedure 1. Detach the drawer. 2. Detach the rear cover. 3. Release the lever of the paper feed clutch with a straight screwdriver in the direction

of the arrow.

LeverPaper feed clutch

Figure 3-3-1

4. Turn the paper feed shaft to an angle of 180 degrees where paper feed pulleys Aand B can be seen.

Paper feed pulley B

Paper feed pulley A Paper feed pulley B

Figure 3-3-2

195

3-3-3

5. Remove the paper feed pulley unit: push it toward the machine rear and pull it out ofthe bushing toward the machine front.

12

Bushing Paper feed pulley unit

Figure 3-3-3

6. Remove each screw and then paper feed pulleys A and B from the paper feedpulley unit.

Paper feed pulley B

Paper feed pulley A

Paper feed pulley B

Figure 3-3-4

7. Clean or replace paper feed pulleys A and B. When installing a new pulley, be surethat the white film surfaces are facing the machine front.

8. Refit all the removed parts.

195

3-3-4

( 2 ) Replacing the feedshift filmsReplace the feedshift films as follows.

Procedure 1. Open the front cover and take the toner cartridge out of the copier. 2. Unlock the developing unit release lever and remove the developing unit and drum

unit. 3. Remove the left, right, front left and front right covers. 4. Remove the E-ring holding the release unit shaft and detach the unit in the direction

of the arrow in the figure.

Release unit

E-ring

Figure 3-3-5

5. Replace the feedshift films by aligning their edges with the line a shown in thefigure.

a

Feedshift films

Figure 3-3-6

6. Refit all the removed parts.

195

3-3-5

195

3-3-6

End

Press the stop/clear key.

Setting range: 89 to 249Reference:

108 for 100% copy121 for enlargement copy91 for reduction copy

Change per step: 0.12 mmIncreasing the value makes the timing of the second paper feed earlier, and reducing it makes the timing later.

Exit simulation mode.

AB

Yes

No

Adjust another mode?

Original Copy example 1 Copy example 2

Figure 3-3-7

195

3-3-7

(3-2) Adjusting the leading edge marginAdjust the leading edge margin as follows if it is not within the specified range.

No. 58(page 3-3-5)

No. 54

Important: Before starting this adjustment, ensure the above simulations have beencompleted.

Procedure

Start

Enter simulation mode.

Enter 54 with the numeric keys.

Press the print key.

Select the mode to be adjusted with the copy exposure adjust-ment keys.

Press the zoom input/enter key. Press the print key.

Mode 1: 100% copyMode 2: enlargement (141%) copyMode 3: reduction (70%) copy

*1 Specified setting3 mm for 100% copy4.5 mm for enlargement copy3 mm for reduction copy

Change the setting with the zoom-up/down key.

Place an A4/81/2" × 11" sheet on the contact glass with the original holder open (see Figure 3-3-8).

Press the print key and make a test copy.

The new setting is stored.

AB

No

Yes

Is leading edge margin A within the specified

range*1?

The current setting is displayed.

Test copy mode is set.

195

3-3-8

End

Press the stop/clear key.

Setting range: 25 to 167References:

131 for 100% copy140 for enlargement copy127 for reduction copy

Change per step: 0.12 mmIncreasing the value makes the margin wider, and reducing it makes the margin narrower.

Exit simulation mode.

AB

Yes

No

Adjust another mode?

A4/81/2" × 11" sheet

Contact glass

Figure 3-3-8

A

A: Use a scale to measure accurately.

Figure 3-3-9

195

3-3-9

(3-3) Adjusting the trailing edge blank cut timingAdjust the trailing edge blank cut timing as follows if the trailing edge margin is not 5 ± 3mm (inch specs) or 15 ± 3 mm (metric specs).

No. 58(page 3-3-5)

No. 54(page 3-3-7)

No. 57

Important: Before starting this adjustment, ensure the above simulations have beencompleted.

Procedure

Start

Enter simulation mode.

Enter 57 with the numeric keys.

Press the print key.

Press the zoom input/enter key. Press the print key.

Change the setting with the zoom-up/down key.

*1 Setting range:5 mm ± 3 mm (inch specs)15 mm ± 3 mm (metric specs)

Place the maximum size of sheet on the contact glass with the origi-nal holder open (see Figure 3-3-10).

Press the print key to make a test copy.

The new setting is stored.

A

No

Yes

Is the trailing edge margin within the

setting range?*1

The current setting is displayed.

Test copy mode is set.

195

3-3-10

End

Press the stop/clear key.Setting range: 0 to 84Reference: 84Change per step: 0.12 mmIncreasing the value makes the margin wider, and decreasing it makes the margin narrower.

Exit simulation mode.

A

Contact glass

Copy paper (maximum size)

Figure 3-3-10

A

A: Use a scale to measure accurately

Figure 3-3-11

195

3-3-11

(3-4) Adjusting the trailing edge marginAdjust the trailing edge margin as follows if it is not 0 mm.

No. 58(page 3-3-5)

No. 54(page 3-3-7)

No. 57(page 3-3-9)

No. 59

Important: Before starting this adjustment, ensure the above simulations have beencompleted.

Procedure

Start

Enter simulation mode.

Enter 59 with the numeric keys.

Press the print key.

Press the zoom input/enter key. Press the print key.

Change the setting with the zoom-up/down keys

Place an A4/81/2" × 11" sheet on the contact glass with the original holder open (see Figure 3-3-12).

Press the print key to make a test copy.

The new setting is stored.

A

No

Yes

Is the trailing edge margin A 0 mm?

The current setting is displayed.

Test copy mode is set.

195

3-3-12

End

Press the stop/clear key.Setting range: 10 to 110Reference: 95Change per step: 0.2 mm Increasing the value makes the margin wider, and decreasing it makes the margin narrower.

Exit simulation mode.

A

Contact glass

A4/81/2" × 11" sheet

Figure 3-3-12

A

A: Use a scale to measure accurately.

Figure 3-3-13

195

3-3-13

3-3-3 Main charging section

( 1 ) Replacing the charger wireTake the following procedure when the charger wire is broken or to be replaced.

Precautions• Use the specified tungsten wire for the charger wire.• The part of the wire wrapped around the charger spring must not protrude from the

charger housing.• The cut end of the charger wire must not protrude more than 2 mm from under the

charger wire retainer pin.• Use a clean, undamaged tungsten charger wire.• Keep the charger wire taut by ensuring that the charger spring is under tension.• Clean the main charger shield first with a damp cloth and then with a dry cloth when

replacing the charger wire.Caution: Do not use organic solvents such as alcohol or thinner to clean the main

charger.

Procedure 1. Open the front cover and take the toner cartridge out of the copier. 2. Unlock the developing unit release lever and remove the developing unit and drum

unit. 3. Remove the screw and main charger retainer.

Main charger retainer Screw

Figure 3-3-14

195

3-3-14

4. Remove the main charger. 5. Remove the main charger front and rear lids with a straight screwdriver. 6. Remove the charger wire retainer pin and charger spring, then the charger wire.

Main charger rear lid

Charger spring

Charger wire

Main charger front lid

Charger wire retainer pin

Figure 3-3-15

7. Wind the new tungsten wire at least five turns around one end of the charger spring.• The length of the cut wire must be less than 2 mm.

8. Hook the other end of the charger spring onto the main charger terminal of the maincharger rear housing.

2 mm or less

Main charger terminal

Charger spring Charger wire

Figure 3-3-16

195

3-3-15

9. Run the wire through the notch in the main charger front and rear housing and pull ittight so that the distance from the end of the charger spring to the notch in the maincharger rear housing is between 7 and 9 mm.

7 to 9 mm

Charger spring Notch

Figure 3-3-17

10. Insert the retainer pin into the main charger front housing to fix the charger wire11. Cut off the excess wire under the retainer pin so less than 2 mm protrudes.

2 mm or less

Charger wire Charger wire retainer pin

Figure 3-3-18

12. Refit the front and rear lids to the main charger.• Ensure that the larger lid is refit to the front housing and smaller lid to the rear

housing.13. Refit all the removed parts.

195

3-3-16

3-3-4 Exposure section

( 1 ) Detaching and refitting the halogen lampClean or replace the halogen lamp as follows.

Procedure 1. Remove the rear and right covers, then the contact glass. 2. Move light source unit 1 to the cutout in the copier rear. 3. Press the lamp terminal at the copier rear in the direction of the arrow and remove it

from the halogen lamp. 4. Remove the halogen lamp from the cutout in the copier rear.

• When removing the lamp, touch only the ceramic parts.

Lamp terminal

Halogen lamp

Figure 3-3-19

5. Clean or replace the halogen lamp.• When replacing the halogen lamp, ensure that the projection of the lamp is facing

up so that it does not come in contact with the other parts such as the reflectors. 6. Refit all the removed parts.

195

3-3-17

( 2 ) Detaching and refitting the optical section thermostatCheck or replace the optical section thermostat as follows.Caution: Use the specified thermostat for replacement. Do not substitute a simple wire

or similar; otherwise, the copier will be seriously damaged.

Procedure 1. Remove the right cover, then the contact glass. 2. Remove the fast-on terminals of the optical section thermostat. 3. Check for continuity across the terminals using a tester. 4. If none, remove the two screws and then the optical thermostat, and fit a new

thermostat.

Optical section thermostat

Fast-on terminals

Figure 3-3-20

5. Refit all the removed parts.

195

3-3-18

( 3 ) Adjusting the positions of the light adjustersPerform the following adjustment after refitting or replacing the light adjusters, or if thecopy image is abnormally light or dark on one side.• Before starting this adjustment, be sure that the main and transfer charges, mirrors

and dust filter are not stained with toner.

Procedure

Start

End

Make a test copy at 100% with the maximum size of copy paper.

No

Yes

Is the copy image correct?

Adjust the positions of the light ad-justers.

• If the copy image is not correct on the machine front, adjust the light adjuster on themachine rear.

• If the copy image is not correct on the machine rear, adjust the light adjuster on themachine front.

• Moving an adjuster to the machine right (e) makes the copy image darker, andmoving it to the machine left (a) makes the copy image lighter.

Light adjusters

Figure 3-3-21

195

3-3-19

( 4 ) Detaching and refitting the scanner wiresPerform the following steps when a scanner wire is broken or to be replaced.Important: After replacing a scanner wire, proceed to “( 5 ) Adjusting longitudinal image

squareness” (see page 3-3-30) and “( 7 ) Making fine adjustment to imagefocus” (see page 3-3-32).

(4-1) Detaching the scanner wires

Procedure 1. Remove the rear, right and left covers, then the contact glass. 2. Remove the front left and front right covers, then the operation unit. 3. Remove the screw holding the scanner feed wire and remove the feed wire

connector.

Clamp

Scanner feed wire

Connector

Figure 3-3-22

4. Remove the scanner feed wire from the feed wire guide.

Feed wire guide

Scanner feed wire

Figure 3-3-23

195

3-3-20

5. Remove each two screws and then the wire retainers on the front and rear of lightsource unit 1.

6. Remove light source unit 1 from the copier.

Light source unit 1

Wire retainers

Figure 3-3-24

7. Unhook the springs on the ends of each scanner wire and remove the scannerwires from each pulley.

195

3-3-21

(4-2) Installing the scanner wires

Required installation jig• Scanner wire drum clips (P/N 75700330)

Procedure 1. Take the fixing unit out of the copier (see page 3-3-62). 2. Remove the eight screws and then the upper left reinforcement plate from the

copier.

Upper leftreinforcement plate

Figure 3-3-25

195

3-3-22

3. Remove the two screws and then the scanner motor from the scanner motor mount.

Scanner motor Scanner motor mount

Figure 3-3-26

4. Remove the E-ring, bushing and the four screws, and then detach the scannermotor mount from the copier.

E-ring Bushing Scanner motor mount

Figure 3-3-27

195

3-3-23

5. Remove the screw and then scanner drive gear 64 from the copier.

Scanner drive gear 64

Figure 3-3-28

6. Remove the E-ring and bushing on the copier front, and then detach scanner wiredrum A from the copier.

Bushing

Scanner wire drum A

E-ring

Figure 3-3-29

195

3-3-24

7. Fit a new scanner wire to scanner wire drum A (on the machine front) as follows.Numbers in circles correspond with those in Figure 3-3-30.1 Holding the scanner wire by the ball furthest from an end, with that longer end on

the right side of the machine and the other end on the left, insert the ball into thehole in scanner wire drum A.

2 Run the shorter end of the scanner wire six times around the drum toward themachine outside.

3 Run the longer end of the wire three times around the drum toward the machineinside.

4 Hold the scanner wire in place with the scanner wire drum clip.

1

3

4

2

Scanner wire drum A

Scanner wire drum clip

Machine left

Machine right

Longer end

Shorter end

Machine front Machine rear

3 turns

6 turns

Figure 3-3-30

195

3-3-25

8. Install the new scanner wire to the scanner wire drum A (on the machine rear) asfollows. Numbers in circles correspond with those in Figure 3-3-31.1 Holding the scanner wire with the ball furthest from an end, with that longer end

from the ball on the right side of the machine and the other end on the left, insertthe ball into the hole in scanner wire drum A.

2 Run the shorter end of the scanner wire six times around the drum toward themachine outside.

3 Run the longer end of the wire three times around the drum toward the machineinside.

4 Hold the scanner wire in place with the scanner wire drum clip.

1

3

4

2

Scanner wire drum A

Scanner wire drum clip

Machine left

3 turns

Machine right

Longer end

Shorter end

Machine front Machine rear

6 turns

Figure 3-3-31

195

3-3-26

9. Refit the scanner wire drum A to the copier.10. Refit scanner drive gear 64, the bushing, scanner motor mount and upper left

reinforcement plate.11. Remove the two screws holding the optical fan motor.

Screws

Optical section fan motor

Figure 3-3-32

12. Move light source unit 2 to the copier center and hold it with the two screwsremoved from the optical section fan motor.

Screw Light source unit 2

Screw

Figure 3-3-33

195

3-3-27

13. Route the scanner wire on the machine front around each pulley as follows.Numbers in circles correspond with those in Figure 3-3-34.1 Loop the shorter end of the scanner wire around the inner groove in the pulley

on the left side of the machine from bottom to top.2 Loop the wire around the outer groove in the pulley of light source unit 2 from top

to bottom.3 Loop the wire around the inner groove in the pulley in the center of the machine

from top to bottom.4 Hook the spring on the end of the wire temporarily onto its holder on the right

side of the machine.5 Loop the longer end of the wire around the inner groove in the pulley of the

upper right side of the machine from bottom to top.6 Loop the wire around the inner groove in the pulley of light source unit 2 from top

to bottom and then thread wire c between wires a and b from top to bottom.7 Loop the wire around the inner groove in the pulley of the lower right of the

machine from top to bottom.8 Run the wire twice toward the inside of scanner wire drum B and insert the ball

into the hole in the drum.9 Run the wire another two turns around the drum.0 Unhook the spring from its holder in step 4 and hook the two springs together.

1

2

3

b

ca

6

4

5

7 9

8 0

Inner

Outer Inner

Inner

2 turns

2 turnsInner

Inner

Figure 3-3-34

195

3-3-28

14. Route the scanner wire on the machine rear around each pulley as follows.Numbers in circles correspond with those in Figure 3-3-35.1 Loop the shorter end of the scanner wire around the inner groove in the pulley

on the left side of the machine from bottom to top.2 Loop the wire around the outer groove in the pulley of light source unit 2 from top

to bottom.3 Loop the wire around the inner groove in the pulley in the center of the machine

from top to bottom.4 Hook the spring on the end of the wire temporarily onto its holder on the right

side of the machine.5 Loop the longer end of the wire around the inner groove in the pulley of the

upper right side of the machine from bottom to top.6 Loop the wire around the inner groove in the pulley of light source unit 2 from top

to bottom, and then thread wire c between wires a and b from top to bottom.7 Loop the wire around the inner groove in the pulley of the lower right of the

machine from top to bottom.8 Run the wire twice toward the inside of scanner wire drum B and insert the ball

into the hole in the drum.9 Run the wire another two turns around the drum.0 Unhook the spring from its holder in step 4 and hook the two springs together.

1

2

3

6

4

5

79

80

Inner

OuterInner

Inner

2 turns

2 turns Inner

Inner

b

ca

Figure 3-3-35

195

3-3-29

15. Remove the front and rear scanner wire drum clips from scanner wire drum A.16. Remove the screw holding light source unit 2 and refit the optical section fan motor.17. Turn scanner wire drum A and move light source unit 2 all the way toward the

machine right.18. Turn scanner wire drum B until the screw on the front side of the drum can be seen

through the cutout in the upper right reinforcement plate.

Upper right reinforcement plate

ScrewScanner wire drum B

Figure 3-3-36

19. Mount light source unit 1 onto the front and rear scanner rails.• When mounting, ensure that the scanner wire on the top is above light source unit 1.

20. Run the scanner feed wire along the feed wire guide and refit it to the connector onthe machine rear. Refit the clamp to hold the scanner feed wire.• Be sure that the scanner feed wire is not twisted.

21. Move light source unit 1 all the way toward the machine right and refit the wireretainers.

22. Refit all the removed parts.23. Perform “( 5 ) Adjusting longitudinal image squareness” (see 3-3-30) and “( 7 )

Making fine adjustment to image focus” (see 3-3-32).

195

3-3-30

( 5 ) Adjusting longitudinal image squareness (inclination of light source 2)Make the following adjustment after replacing the scanner wires, or if the copy image islongitudinally skewed (longitudinal squareness is not obtained).

Procedure

Start

End

Make a test copy with an A4/81/2" × 11" sheet.

No

Yes

Is the copy image correct?

Tighten the adjustment screw on the scanner wire drum.

Adjust the inclination by loosening the adjustment screw on scanner wire drum B and then turning the drum.

• To correct an image as in copy example 1, turn scanner wire drum B in the direction ofthe black arrow (a).

• To correct an image as in copy example 2, turn scanner wire drum B in the direction ofthe white arrow (e).

Adjustment screw

Scanner wire drum B

Figure 3-3-38

Original Copy example 2Copy example 1

Figure 3-3-37

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3-3-31

( 6 ) Adjusting lateral image squareness (height of light source 2)Make the following adjustment if the copy image is laterally skewed (lateral squarenessis not obtained).

ProcedureStart

End

Make a test copy with an A4/81/2" × 11" sheet.

No

Yes

Is the copy image in focus?

Tighten the two screws of the mir-ror frame adjustment plate.

Adjust the height of light source unit 2 by turning its adjustment screw.

Loosen the two screws holding the mirror frame adjustment plate.

• To correct an image as in copy example 1, turn the adjustment screw clockwise.• To correct an image as in copy example 2, turn the adjustment screw counterclockwise.Important: Paint-lock the adjustment screw of light source 1 after adjustment.

Adjustment screw

Light source 2

Screws

Mirror frame adjustment plate

Figure 3-3-40

Original Copy example 1 Copy example 2

Figure 3-3-39

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3-3-32

( 7 ) Making fine adjustment to image focusPerform the following adjustment after replacing the optical wires, or if the entire copyimage is out of focus.

Mode setting procedure

Start

End

Check that exposure is correctly set in “( 8 ) Setting the exposure amount”.

Run simulation “(7-1) Adjusting the mirror home position for 100% copying”.

Run simulation “(7-3) Adjusting the mirror home position for reduc-tion mode”.

Run simulation “(7-2) Adjusting the mirror home position for en-largement mode”.

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3-3-33

(7-1) Adjusting the mirror home position for 100% copying

Procedure

Start

Enter simulation mode.

Enter 25 with the numeric keys.

Place the NTC on the contact glass and A4/81/2" × 11" copy pa-per.

Press the print key.

Select the mode to be adjusted and change the setting to 0.

Press the stop/clear key.

Enter 27 with the numeric keys.

Press the print key.

Select the mode to be adjusted and change the setting to 0 for modes 1 to 4 and 32 for modes 5 and 6 with the zoom up/down keys.

Select mode 6 with the copy expo-sure adjustment keys.

· · · · · · · The current setting is displayed.

A

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3-3-34

Press the zoom input/enter key.

Press the print key.

Change the setting with the zoom up/down keys.

Setting range: 0 to 63Reference: 32

Press the print key to make a test copy.

Press the stop/clear key.

Exit simulation mode.

The new setting is stored.

No

Yes

Is the copy image in focus?

· · · · · · · Test copy mode is set.

A

End

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3-3-35

(7-2) Adjusting the mirror home position for enlargement mode

Procedure

Start

End

Enter simulation mode.

Enter 27 with the numeric keys.

Press the print key.

Press the stop/clear key.

Exit simulation mode.

Select mode 3 with the copy expo-sure adjustment keys.

Place the NTC on the contact glass and A4/81/2" × 11" copy pa-per.

Press the zoom input/enter key.

Press the print key.

Change the setting with the zoom up/down keys.

Setting range: –8 to 8Reference: 0

Press the print key to make a test copy at 141%.

The new setting is stored.

No

Yes

Is the copy image in focus?

· · · · · · · The current setting is displayed.

· · · · · · · Test copy mode is set.

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3-3-36

(7-3) Adjusting the mirror home position for reduction mode

Procedure

Start

End

Enter simulation mode.

Enter 27 with the numeric keys.

Press the print key.

Press the stop/clear key.

Exit simulation mode.

Select mode 4 with the copy expo-sure adjustment keys.

Place the NTC on the contact glass and A4/81/2" × 11" copy pa-per.

Press the zoom input/enter key.

Press the print key.

Change the setting with the zoom up/down keys.

Setting range: –8 to 8Reference: 0

Press the print key to make a test copy at 70%.

The new setting is stored.

No

Yes

Is the copy image in focus?

· · · · · · · The current setting is displayed.

· · · · · · · Test copy mode is set.

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3-3-37

( 8 ) Setting the exposure amountPerform the following adjustment when the drum is replaced.

Precautions• Check that the developer density is correct.• Check that the halogen lamp has not deteriorated.• Clean the optical system.• Never touch controls VR1, VR2 or VR3 on the AVR PCB.

Mode setting procedure

Start

End

Select mode 1 (manual Exp. 4).

Select mode 2 (manual Exp. 1).

Select mode 3 (manual Exp. +2).

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3-3-38

Procedure

Start

Enter simulation mode.

Enter 24 with the numeric keys.

Press the print key.

Place the NTC on the contact glass and select mode 1 with the copy exposure adjustment keys.

Press the zoom input/enter key.

Press the print key.

Decrease the setting with the zoom-down key.

Increase the setting with the zoom-up key.

Increasing the value makes the image lighter, and decreasing it makes the image darker.

Setting range: 20 to 100Reference: 62

Press the print key to make a test copy at Exp. 4.

The new setting is stored.

A

Yes

No

Yes

No

Is the image abnormally light?

Is the image abnormally dark?

· · · · · · · The current setting is displayed.

· · · · · · · Test copy mode is set.

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3-3-39

Place the blue graph paper on the contact glass and select mode 2 with the copy exposure adjust-ment keys.

Press the zoom input/enter key.

Press the print key.

Decrease the setting with the zoom-down key.

Increase the setting with the zoom-up key.

Increasing the value makes the image lighter, and decreasing it makes the image darker.

Setting range: –40 to 0Reference: –18

Press the print key to make a test copy at Exp. 1.

The new setting is stored.

B

Yes

No

Yes

No

Is the image abnormally light?

Is the image abnormally dark?

· · · · · · · The difference from the setting in mode 1 (Exp. 4) is displayed.

· · · · · · · Test copy mode is set.

A

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3-3-40

Place the NPTC on the contact glass and select mode 3 with the copy exposure adjustment keys.

Press the zoom input/enter key.

Press the print key.

Decrease the setting with the zoom-down key.

Increase the setting with the zoom-up key.

Increasing the value makes the image lighter, and decreasing it makes the image darker.

Setting rage: 0 to 50Reference: 30

Press the print key to make a test copy at Exp. +2.

Press the stop/clear key.

Exit simulation mode.

The new setting is stored.

Yes

No

Yes

No

Is the image abnormally light?

Is the image abnormally dark?

· · · · · · · The difference from the setting in mode 1 (Exp. 4) is displayed.

· · · · · · · Test copy mode is set.

B

End

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3-3-41

( 9 ) Adjusting the auto exposure

Procedure

Start

End

Check that exposure is correctly set in “( 8 ) Setting the exposure amount”.

Enter simulation mode.

Enter 28 with the numeric keys.

Press the print key.

Select mode 1 with the exposure adjustment keys.

Place five sheets of A4/81/2" × 11" plain white paper on the contact glass.

Press the copy size key. Prescan is performed repeatedly until the output level stabilizes at around the reference. Prescan then stops automatically.*1

Select mode 2 with the exposure adjustment keys.

Place the NTC on the contact glass.

Press the copy size key to start prescanning.

Select mode 3 with the exposure adjustment keys.

Place the NPTC on the contact glass.

Press the copy size key to start prescanning.

Press the stop/clear key.

Exit simulation mode.

*1 When the AE sensor or exposure lamp is broken, prescanning is repeated until thestop/clear key is pressed.

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3-3-42

(10) Adjusting exposure amount for enlargement/reduction modeMake the following adjustment when replacing the main PCB or drum.

Mode setting procedure

Start

End

Check that exposure is correctly set in “( 8 ) Setting exposure amount”.

Perform “(10-1) Adjusting expo-sure amount for enlargement mode”.

Perform “(10-2) Adjusting expo-sure amount for reduction mode”.

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3-3-43

(10-1) Adjusting exposure amount for enlargement mode (141%)

Procedure

Start

End

Enter simulation mode.

Enter 29 with the numeric keys.

Press the print key.

Press the stop/clear key.

Exit simulation mode.

Select mode 1 with the exposure adjustment keys.

Place the NTC on the contact glass and A4/81/2" × 11" copy pa-per.

Press the zoom input/enter key.

Press the print key.

Decrease the setting with the zoom-down key.

Increase the setting with the zoom-up key.

Setting range: –20 to 20Reference: 0Increasing the value makes the image lighter, and decreasing it makes the image darker.

Press the print key to make a test copy at 141%.

The new setting is stored.

Yes

No

Yes

No

Is the copy image abnormally light?

Is the copy image abnormally dark?

· · · · · · · The difference from the setting in simulation 24-1 is displayed.

· · · · · · · Test copy mode is set.

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3-3-44

(10-2) Adjusting exposure amount for reduction mode (70%)

Procedure

Start

End

Enter simulation mode.

Enter 29 with the numeric keys.

Press the print key.

Press the stop/clear key.

Exit simulation mode.

Select mode 2 with the exposure adjustment keys.

Place the NTC on the contact glass and A4/81/2" × 11" copy pa-per.

Press the zoom input/enter key.

Press the print key.

Decrease the setting with the zoom-down key.

Increase the setting with the zoom-up key.

Setting range: –20 to 20Reference: 0Increasing the value makes the image lighter, and decreasing it makes the image darker.

Press the print key to make a test copy at 70%.

The new setting is stored.

Yes

No

Yes

No

Is the copy image abnormally light?

Is the copy image abnormally dark?

· · · · · · · The difference from the setting in simulation 24-1 is displayed.

· · · · · · · Test copy mode is set.

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3-3-45

(11) Adjusting lateral magnification (correcting the lens travel distance)Make the following adjustment if the lateral magnification is not correct.

Mode setting procedure

Start

End

Check that exposure is set cor-rectly in “( 8 ) Setting exposure amount”.

Perform “(11-1) Correcting the lens travel distance for 100% copying”.

Perform “(11-2) Correcting the lens travel distance for enlarge-ment copying”.

Perform “(11-3) Correcting the lens travel distance for reduction copying”.

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3-3-46

(11-1) Correcting the lens travel distance for 100% copying

Procedure

Start

End

Enter simulation mode.

Enter 25 with the numeric keys.

Press the print key.

Press the stop/clear key.

Exit simulation mode.

Select mode 1 with the exposure adjustment keys.

Place the NTC on the contact glass and A4/81/2" × 11" copy pa-per.

Press the zoom input/enter key.

Press the print key.

Decrease the setting with zoom-down key.

Increase the setting with zoom-up key.

Setting range: –20 to 20Reference: 0Change per step: 0.1%Increasing the value makes the wider, and decreasing it makes the image narrower.

Press the print key to make a test copy.

The new setting is stored.

Yes

No

Yes

No

Is the copy image too wide?

Is the copy image too narrow?

· · · · · · · The current setting is displayed.

· · · · · · · Test copy mode is set.

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3-3-47

(11-2) Correcting the lens travel distance for enlargement copying

Procedure

Start

End

Enter simulation mode.

Enter 25 with the numeric keys.

Press the print key.

Press the stop/clear key.

Exit simulation mode.

Select mode 2 with the exposure adjustment keys.

Place the NTC on the contact glass and A4/81/2" × 11" copy pa-per.

Press the zoom input/enter key.

Press the print key.

Decrease the setting with zoom-down key.

Increase the setting with zoom-up key.

Setting range: –20 to 20Reference: 0Change per step: 0.1%Increasing the value makes the image wider, and decreasing it makes the image narrower.

Press the print key to make a test copy at 141%.

The new setting is stored.

Yes

No

Yes

No

Is the copy image too wide?

Is the copy image too narrow?

· · · · · · · The current setting is displayed.

· · · · · · · Test copy mode is set.

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3-3-48

(11-3) Correcting the lens travel distance for reduction copying

Procedure

Start

End

Enter simulation mode.

Enter 25 with the numeric keys.

Press the print key.

Press the stop/clear key.

Exit simulation mode.

Select mode 3 with the exposure adjustment keys.

Place the NTC on the contact glass and A4/81/2" × 11" copy pa-per.

Press the zoom input/enter key.

Press the print key.

Decrease the setting with zoom-down key.

Increase the setting with zoom-up key.

Setting range: –20 to 20Reference: 0Change per step: 0.1%Increasing the value makes the image wider, and decreasing it makes the image narrower.

Press the print key to make a test copy at 70%.

The new setting is stored.

Yes

No

Yes

No

Is the copy image too wide?

Is the copy image too narrow?

· · · · · · · The current setting is displayed.

· · · · · · · Test copy mode is set.

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3-3-49

(12) Adjusting longitudinal magnification (scanning speed)Perform the following adjustment if the longitudinal magnification is not correct.

Procedure

Start

End

Enter simulation mode.

Enter 26 with the numeric keys.

Press the stop/clear key.

Exit simulation mode.

Press the print key.

Place the NTC on the contact glass and A4/81/2" × 11" copy pa-per.

Press the zoom input/enter key.

Press the print key.

Decrease the setting with zoom-down key.

Increase the setting with zoom-up key.

Setting range: 1 to 20Reference: 13Change per step: 0.2%Increasing the value makes the image longer, and decreasing it makes the image shorter.

Press the print key to make a test copy.

The new setting is stored.

Yes

No

Yes

No

Is the copy image too long?

Is the copy image too short?

· · · · · · · The current setting is displayed.

· · · · · · · Test copy mode is set.

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3-3-50

3-3-5 Drum section (metric specification only)

( 1 ) Detaching and refitting the drumPerform the following steps when cleaning or replacing the drum.

Precautions• Avoid direct sunlight and strong light when detaching and refitting the drum.• Hold the drum at the ends and never touch the drum surface.• After removing the drum, keep it in the drum case or storage bag to protect the

surface from light.

Procedure 1. Open the front cover and take the toner cartridge out of the copier. 2. Unlock the developing unit release lever and detach the developing unit and drum

unit. 3. Remove the screw and then the drum pin from the drum unit. 4. Detach the drum from the drum unit. 5. Remove the bushing from the drum and pull out the drum shaft.

Drum unit

Drum shaft

Drum pin

Drum

Bushing

Figure 3-3-41

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3-3-51

6. Replace the drum. 7. Refit all the removed parts.

• When refitting the drum pin, ensure that it is inserted correctly into the drum shaftso that the D-cut part of the pin corresponds with that of drum shaft.

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3-3-52

( 2 ) Cleaning the drumClean the drum as follows when an image problem occurs, or if the drum is dirty.

Precautions• Avoid direct sunlight and strong light when cleaning the drum.• Dust in the air and from the cleaning pad may damage the drum during operation.

Avoid working in dusty place.• Clean the drum entirely even if it is only dirty locally.• Do not clean the drum with alcohol, thinner or other organic solvent.

Required supplies• Polishing cloth: specified synthetic cotton• Toner

Procedure 1. Detach the drum (see page 3-3-50). 2. Apply a polishing cloth to the drum and gently wipe the drum taking care not to

damage the surface. 3. Apply toner to another cloth and wipe the drum surface with it in the same manner. 4. Refit the drum. 5. Refit all the removed parts and let the copier stand for 30 minutes. 6. Make a test copy and check the image.

Drum

Polishing cloth

Figure 3-3-42

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3-3-53

3-3-6 Developing section (metric specification only)

( 1 ) Replacing developerPerform the following steps when replacing developer.Important: When replacing developer, place the developing unit on a level surface.

Procedure 1. Open the front cover and take the toner cartridge out of the copier. 2. Unlock the developing unit release lever and detach the developing unit. 3. Remove the four screws and then the developing cover from the developing unit by

pulling the cover in the direction of the arrow in the figure.

Developing unit cover

Developing unit

Figure 3-3-43

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3-3-54

4. Remove the old developer from the developing unit. 5. Shake the new developer bottle well to agitate the developer. 6. Pour the new developer evenly into the developing unit while turning the gear in the

direction of the arrow in the figure.

Developing unit

Gear

Figure 3-3-44

7. Refit all the removed parts. 8. Turn the main switch on while pressing the print key and stop/clear key. 9. 2 s or less after “ ” is shown on the copy quantity/magnification display, press the

stop/clear key to enter simulation mode.10. Enter 60 with the copy quantity/zoom-up or -down keys and press the print key.11. Press the print key. The toner control voltage is set automatically.12. Press the stop/clear key.13. Enter 01 with the copy quantity/zoom-up or -down keys and press the print key to

exit the simulation mode.

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3-3-553-3-54-1

( 2 ) Adjusting the formation position of the magnetic brush (reference)Check or adjust when the image density is too light or a background is visible.Note: Check if the amount of the developer is correct before the adjustment.

Procedure 1. Open the front cover and remove the toner cartridge. 2. Unlock the developing unit release lever and remove the developing unit. 3. Remove the developing unit terminal cover from the developing unit (two screws).

Developing unit

Developing unit terminal cover

Figure 3-3-44-1

4. Loosen the screw holding the developing roller retainer. Adjust the developingroller shaft using a scale so that the distance between the top of the magneticbrush and the bottom of the developing unit housing is 12.5 mm (referencevalue).

A

A:12.5 mm

Developing roller retainerScrew

Developing roller shaft

Figure 3-3-44-2

5. Refit the removed parts. 6. Make a test copy and check the copy image.

195-1

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3-3-563-3-54-2

( 3 ) Adjusting developing bias voltage (reference)Make the following adjustment if VR DB on the high voltage PCB has been accidentallyturned. Be sure to turn VR DB only when absolutely necessary.

Adjustment tools• Tester

Procedure

No

Yes

Start

End

Run simulation 33.

Enter the simulation mode.

If the developing bias is set above the reference level, the copy image is too light; if it is below the reference level, a dark background shows.

*

Is the developingbias correct (reference

value: 270 V)?

Press stop/clear.

With the developing unit removed from the machine, connect the tester positive terminal to the purple DB terminal of the high voltage PCB and the negative one to ground (an uncoated area on the frame).

Turn VR DB on the high voltage PCB clockwise ( ) to increase the voltage; turn it counterclock-wise ( ) to decrease it*.

Exit the simulation mode.

Turn the main switch off and disconnect the tester terminals.

e

a

Figure 3-3-44-3 Adjusting developing bias

Tester

Ground

VR DB

DB terminal

195-1

195

3-3-57

3-3-7 Transfer section

( 1 ) Replacing the charger wiresPerform the following steps when the transfer charger wire is broken or is to bereplaced.

Precautions• Use the specified tungsten wire for the charger wire.• The part of the wire wrapped around the charger spring must not protrude from the

charger housing.• The cut end of the charger wire must not protrude more than 2 mm from under the

charger wire retainer pin.• Use a clean, undamaged tungsten charger wire.• Keep the charger wire taut by ensuring the charger spring is under tension.• Clean the transfer charger shield first with a damp cloth and then with a dry cloth when

replacing the charger wire.Caution: Do not clean the transfer charger shield with alcohol, thinner or other organic

solvent.

Procedure 1. Open the release unit. 2. Loosen the pins on the front and rear of the release unit.

Pin

Release unit

Pin

Figure 3-3-45

3-3-55

195

3-3-58

3. Remove the connector of the transfer unit and detach the unit.

Connector

Transfer unit

Figure 3-3-46

4. Remove the three screws and then the pre-transfer guide from the transfer unit. 5. Remove the screw holding each of the front and rear transfer stoppers and then

detach the stoppers from the transfer unit. 6. Remove the transfer charger front and rear transfer lids with a straight screwdriver. 7. Remove the charger wire retainer pin and charger spring, then the charger wire.

Transfer charger rear lid

Charger spring

Transfer charger rear stopper

Transfer unit

Pre-transfer guide

Charger wire

Transfer charger front lid

Charger wire retainer pin

Transfer charger front stopper

Figure 3-3-47

3-3-56

195

3-3-59

8. Wind the new tungsten wire at least five turns around one end of the charger spring.• The length of the cut wire must be less than 2 mm.

9. Hook the other end of the charger spring to the transfer charger terminal of thetransfer charger rear housing.

2 mm or less

Transfer charger terminal Charger springCharger wire

Figure 3-3-48

10. Run the wire through the notch in the charger wire retainer pin and pull it tight sothat the distance from the end of the charger spring to the notch in the main chargerrear housing is between 6 and 8 mm.

6 to 8 mm

Charger wire

Notch

Figure 3-3-49

3-3-57

195

3-3-60

11. Press the retainer pin into the projection of the main charger front housing, soholding the charger wire with it.

12. Cut off the excess wire under the retainer pin so less than 2 mm protrudes.

2 mm or less

Charger wire Charger wire retainer pin

Figure 3-3-50

13. Refit the front and rear lids to the transfer charger.• Ensure that the larger lid is refitted to the front housing and smaller lid to the rear

housing.14. Refit all the removed parts.

3-3-58

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3-3-8 Cleaning section (metric specification only)

( 1 ) Replacing the cleaning bladeReplace the cleaning blade as follows.

Procedure 1. Open the front cover and take the toner cartridge out of the copier. 2. Unlock the developing unit release lever and detach the developing unit and drum

unit. 3. Detach the drum from the drum unit (see page 3-3-50). 4. Remove the two screws and then the upper cleaning cover from the drum unit.

Upper cleaning cover

Drum unit

Figure 3-3-51

3-3-59

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3-3-62

5. Remove the two screws and then the cleaning upper cover from the drum unit.

Cleaning blade

Drum unit

Figure 3-3-52

6. Replace the cleaning blade.• When fitting the cleaning blade, ensure that the projections of the drum unit are

seated in the positioning holes in the cleaning blade. 7. Refit all the removed parts.

3-3-60

195

3-3-63

( 2 ) Detaching and refitting the lower cleaning bladeReplace the lower cleaning blade as follows.

Procedure 1. Open the front cover and take the toner cartridge out of the copier. 2. Unlock the developing unit release lever and detach the developing unit and drum

unit. 3. Detach the drum from the drum unit (see page 3-3-50). 4. Remove the two screws and then the lower cleaning blade from the drum unit.

Drum unit

Lower cleaning blade

Figure 3-3-53

5. Replace the cleaning blade.• When fitting the lower cleaning blade, ensure that the projections of the drum unit

are seated in the positioning holes in the cleaning blade. 6. Refit all the removed parts.

3-3-61

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3-3-64

3-3-9 Fixing section

( 1 ) Detaching and refitting the fixing heaterCheck or replace the fixing heater as follows.

Procedure 1. Detach the left cover. 2. Remove the four connectors of the fixing unit from the copier. 3. Remove the four screws and then the fixing unit from the copier.

Connectors

Fixing unit

Figure 3-3-54

3-3-62

195

3-3-65

4. Remove the four screws and then the copy tray attachment from the fixing unit.

Fixing unit

Figure 3-3-55

5. Remove the two screws and then the fixing unit cover from the fixing unit.

Fixing unit cover

Fixing unit

Figure 3-3-56

3-3-63

195-1

195

3-3-66

6. Remove the fixing unit connector from fixing thermostat 1 (on the copier front). 7. Remove the screw holding each of the front and rear heater mounts, and then

detach them from the fixing unit.

Rear heater mount

Fixing unit

Fixing thermostat 1

Connector

Front heater mount

Figure 3-3-57

8. Pull the fixing heater out via the front of the fixing unit. 9. Check or replace the fixing heater.10. Refit all the removed parts.

3-3-64

195-1

195

3-3-67

( 2 ) Detaching and refitting the fixing unit thermistorCheck, clean or replace the fixing unit thermistor as follows.

Procedure 1. Take the fixing unit out of the copier (see page 3-3-62). 2. Remove the copy tray attachment and fixing unit cover from the fixing unit (see

page 3-3-63). 3. Remove the screw and then the fixing unit thermistor from the fixing unit.

Fixing unit thermistor

Fixing unit

Figure 3-3-58

4. Check, clean or replace the fixing unit thermistor. 5. Refit all the removed parts.

3-3-65

195-1

195

3-3-68

( 3 ) Detaching and refitting fixing thermostats 1 and 2Check or replace thermostats 1 and 2 as follows.Caution: Use the specified thermostat for replacement. Do not substitute a simple wire

or similar; otherwise, the copier will be seriously damaged.

Procedure 1. Take the fixing unit out of the copier (see page 3-3-62). 2. Remove the copy tray attachment and fixing unit cover from the fixing unit (see

page 3-3-63). 3. Remove the connectors of the fixing heater, fixing heater wire and thermostat relay

wire from fixing thermostats 1 and 2. 4. Remove the two screws holding each of the fixing thermostats and then remove the

thermostats from the fixing unit.

Thermostat relay wire

Fixing thermostat 2

Fixing heater wire

Fixing thermostat 1

Fixing heater

Fixing unit

Figure 3-3-59

5. Check or replace fixing thermostat 1 and 2.• When fitting, check the temperature indications on the thermostats and fixing stay,

and install the thermostats in the correct positions. 6. Refit all the removed parts.

3-3-66

195-1

195

3-3-69

( 4 ) Detaching and refitting the press rollerClean or replace the press roller as follows.

Procedure 1. Take the fixing unit out of the copier (see page 3-3-62). 2. Remove the copy tray attachment from the fixing unit (see page 3-3-63). 3. Remove the fixing unit lower housing and heat roller grounding plate from the fixing

unit (two screws).

Fixing unit lower housing

Heat roller grounding plate

Fixing unit

Figure 3-3-60

3-3-67

195-1

195

3-3-70

4. Remove the screw and then the fixing entrance guide from the fixing unit lowerhousing.

5. Remove the press roller from the fixing unit lower housing.

Press roller

Fixing entrance guide Fixing unit lower housing

Figure 3-3-61

6. Clean or replace the press roller. 7. Refit all the removed parts.

• Press the fixing entrance guide all the way down while refitting it.

3-3-68

195

3-3-71

( 5 ) Detaching and refitting the heat rollerClean or replace the heat roller as follows.

Procedure 1. Take the fixing unit out of the copier (see page 3-3-62). 2. Remove the copy tray attachment, fixing unit cover and fixing unit lower housing

from the fixing unit (see page 3-3-63, 67). 3. Remove the three heat roller separation claws from the fixing unit (see page 3-3-

71). 4. Remove the E-ring and then idle gear 20 from the fixing unit.

Fixing unit

E-ring

Idle gear 20

Figure 3-3-62

3-3-69

195

3-3-72

5. Remove the heat roller stopper on the rear of the fixing unit rear, then fixing gear 32and the heat roller bushing.

6. Remove the heat roller stopper on the front of the fixing unit front and then detachthe heat roller bushings.

7. Remove the heat roller from the fixing unit.

Heat roller stopper

Heat roller bushing

Heat roller

Fixing gear 32

Heat roller bushing

Heat roller stopper

Figure 3-3-63

8. Clean or replace the heat roller. 9. Refit all the removed parts.

3-3-70

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( 6 ) Detaching and refitting the heat roller separation clawsCheck, clean or replace the heat roller separation claws as follows.

Procedure 1. Take the fixing unit out of the copier (see page 3-3-62). 2 Remove the copy tray attachment and fixing unit cover from the fixing unit (see

page 3-3-63). 3. Orient the heat roller separation claws in the direction of the arrows in the figure,

and then detach them.

Fixing unit

Heat roller separation claws

Figure 3-3-64

4. Check, clean and replace the heat roller separation claws. 5. Refit all the removed parts.

3-3-71

195

3-3-743-3-72

( 7 ) Detaching and refitting the fixing bladePerform the following procedure when checking, cleaning or replacing the fixing blade.

Procedure 1. Take the fixing unit out of the copier (see page 3-3-62). 2. Remove the copy tray attachment and fixing unit cover from the fixing unit (see

page 3-3-63). 3. Remove the screw and then the fixing unit thermistor from the fixing unit. 4. Remove the fixing unit thermistor and fixing blade from the fixing unit (one screw).

Fixing thermistor

Fixing unit

Fixing blade

Figure 3-3-65

4. Check, clean or replace the fixing blade.When refitting the fixing blade, make sure that the blade is in contact with the heatroller.

5. Refit all the removed parts.

195-1

195

3-4 PCB Initial Setting3-4-1 Replacing the main PCB ................................................................... 3-4-13-4-2 Adjustment-free variable resistors (VR) ............................................ 3-4-3

195

3-4-1

3-4-1 Replacing the main PCBAfter replacing the main PCB, remove the EEPROM from the old main PCB and fit it tothe new main PCB. If the new EEPROM is used, perform the following steps.

Procedure• Before removing the old EEPROM:

1. Record the user settings of the following items which must be reentered afterreplacement.• Exposure mode• Manual exposure adjustment• Auto exposure adjustment• Auto shutoff on/off• Auto shutoff time• Auto preheat time• Preheat recovery time• Auto clear on/off• Auto clear time

2. Enter simulation mode. 3. Run simulation 73 and record the maintenance count. 4. Exit simulation mode. 5. Turn the main switch off and unplug the power cord. 6. Replace the EEPROM with the new one.

195

3-4-2

• After installing the new EEPROM: 7. Insert the power plug and turn the main switch on. 8. Enter simulation mode. 9. Run simulation 70.10. Run simulation 93 to select the destination.11. Run the following simulations to check or reenter the data recorded on the

simulation label.

12. Exit simulation mode.13. Reenter the contents of the user settings recorded in step 1.

Sim. No. Contents

24 Setting the exposure amount25 Adjusting lateral magnification26 Adjusting longitudinal magnification27 Making fine adjustment to image focus28 Adjusting the auto exposure29 Adjusting exposure amount for enlargement/reduction mode47 Setting the fixing temperature54 Adjusting the leading edge margin57 Adjusting the trailing edge blank cut timing58 Adjusting the leading edge registration timing59 Adjusting the trailing edge margin62 Checking/setting the toner control voltage71 Checking/setting the maintenance cycle73 Checking/clearing the maintenance count85 Selecting between auto preheat on/off89 Setting the presence of the flicker resistor91 Setting operation under the toner empty condition92 Selecting between auto start on/off96 Setting the memory switch98 Setting the maintenance method (available in Peru only)99 Selecting between E2000-compliant function on/off

195-1

195

3-4-3

3-4-2 Adjustment-free variable resistors (VR)The variable resistors listed below are set at the factory prior to shipping and cannot beadjusted in the field.• AVR PCB: VR1, VR2, VR3• High-voltage transformer PCB: VRDB, VRDC

195

3-5 Self-diagnostics3-5-1 Self diagnostic function ..................................................................... 3-5-1

( 1 ) Self diagnostic display ............................................................... 3-5-1

195

3-5-1

3-5-1 Self-diagnostic function

(1) Self-diagnostic displayThis unit is equipped with a self-diagnostic function. When it detects a problem with it-self, it disables copying and displays “C” and a two digit number between 01 and 76 al-ternately on the copy quantity/magnification display in the operation unit, indicating thenature of the problem.After removing the problem, the self-diagnostic function can be reset by opening andclosing the front cover or release unit to turn the safety switch off and back on.

0% Display alternates

21%

Figure3-5-1 Service call code display

195

3-5-2

Turn the main switch off and on, thenrun simulation 70 and re-enter thebackup memory contents.

If C01 persists after re-entering thebackup memory contents, replace themain PCB or EEPROM (IC8).

Replace the main PCB and check forcorrect operation.

Replace the EEPROM (IC8) andcheck for correct operation.

Replace the drive motor.

Check for continuity across the con-nector terminals. If none, replacethem.

Check if rollers and gears rotatesmoothly. If not, grease the bushingsand gears. Check for broken gearsand replace if any.

Replace the main PCB and check forcorrect operation.

Check for the continuity across thescanner motor coil. If none, replacethe scanner motor.

Check if CN10-2 on the main PCBgoes high when the home positionswitch is on and goes low when theswitch is off. If not, replace the homeposition switch.

Check for continuity across the homeposition switch connector terminals. Ifnone, replace them.

C01

C02

C21

C30

Code ContentsRemarks

Causes Check procedures/corrective measures

Self diagnostic codes

Backup memorydata problem.

Defective mainPCB orEEPROM (IC8).

Defective MainPCB.

DefectiveEEPROM (IC8).

Defective rotationcontrol circuit inthe drive motor.

Poor contact inthe connectorterminals.

Defective drivetransmission sys-tem.

Defective mainPCB.

Broken scannermotor coil.

Defective homeposition switch.

Poor contact inthe home posi-tion switch con-nector terminals.

Backup memorydata problem• Abnormal datais written on theEEPROM (IC8).

EEPROM writeproblem• The copier doesnot enter RDYstate more than1 s after startingto write data toEEPROM (IC8).

Drive motorproblem• The drive motoralarm signal(DM ALM) isdetected morethan 2 s afterthe drive motorhas been turnedon.

Scanner motorproblem• The home posi-tion switch doesnot turn offwithin 5 s afterthe scanner mo-tor has startedforward rotation.

• The home posi-tion switch doesnot turn onwithin 7 s afterthe scanner mo-tor has startedreverse rotation.

195

3-5-3

Reinstall the scanner drive belt andadjust the tension.

Reinstall the wire.

Retighten the screws and adjust theimage focus.

Replace the main PCB and check forcorrect operation.

Check for continuity across the coil. Ifnone, replace the lens motor.

Check if CN12-9 on the main PCBgoes high when the lens home posi-tion switch is on and goes low whenthe switch is off. If not, replace thelens home position switch.

Check for continuity across the con-nector terminals. If none, replacethem.

Replace the main PCB and check forcorrect operation.

Check for continuity across the coil. Ifnone, replace the mirror motor.

Check if CN12-3 on the main PCBgoes high when the mirror home posi-tion switch is on and goes low whenthe switch is off. If not, replace themirror home position switch.

Check for continuity across the con-nector terminals. If none, replacethem.

Replace the main PCB and check forcorrect operation.

Code ContentsRemarks

Causes Check procedures/corrective measures

Loose scannerdrive belt.

Loose scannerwire.

Loose screwsholding the scan-ner wire retain-ers.

Defective mainPCB.

Defective lensmotor.

Defective lenshome positionswitch.

Poor contact inthe lens homeposition switchconnector termi-nals.

Defective mainPCB.

Defective mirrormotor.

Defective mirrorhome positionswitch.

Poor contact inthe mirror homeposition switchconnector termi-nals.

Defective mainPCB.

Scanner motorproblem• The home posi-

tion switch doesnot turn offwithin 5 s afterthe scanner mo-tor has startedforward rotation.

• The home posi-tion switch doesnot turn onwithin 7 s afterthe scanner mo-tor has startedreverse rotation.

Lens motorproblem• The lens home

position switchdoes not turn onor off within 5 safter initial op-eration hasstarted.

Mirror motorproblem• The mirror

home positionswitch does notturn on or offwithin 4 s afterinitial operationhas started.

C30

C41

C42

195

3-5-4

Check the charger wire visually. If it isbroken, replace it.

Check the main charger housing. If itis dirty, clean it.

Check the transfer charger wire visu-ally. If it is broken, replace it.

Check the transfer charger housing. Ifit is dirty, clean it.

Detach the main or transfer chargerassembly; if C50 persists, replace thehigh-voltage transformer PCB.

Replace the main PCB and check forcorrect operation.

Check for continuity. If none, replacethe fixing heater.

Check the fixing heater and reinstall ifnecessary.

Check for continuity. If none, replacefixing unit thermostats 1 and 2.

Check the fixing unit thermistor andreinstall if necessary.

Replace the main PCB and check forcorrect operation.

Code ContentsRemarks

Causes Check procedures/corrective measures

C50

C61

Main/transferhigh-voltageproblem• The high-volt-age alarm sig-nal (HV ALM) isdetected morethan 2 s afterthe main high-voltage outputhas been turnedon.

Broken fixingheater filament• The fixing stabi-lization tem-perature is notreached within60 s after fixingcontrol hasstarted.

• The fixing tem-perature dropsbelow 80°C/176°F (fixingunit thermistoroutput voltage:1.06 V DC) afterhaving reachedthe stabilizationlevel.

Broken maincharger wire.

The maincharger leaks.

Broken transfercharger wire.

The transfercharger leaks.

Defective high-voltage trans-former PCB.

Defective mainPCB.

Broken fixingheater filament.

Fixing heaterinstalled incor-rectly.

Fixing unit ther-mostats 1 and 2triggered.

Fixing unit ther-mistor installedincorrectly.

Defective mainPCB.

195

3-5-5

Measure the resistance. If it is ∞ Ω,replace the fixing unit thermistor.

Check for continuity across the con-nector terminals. If none, replacethem.

Replace the main PCB and check forcorrect operation.

Measure the resistance. If it is 0 Ω, re-place the fixing unit thermistor.

Replace the main PCB and check forcorrect operation.

Check that the connectors are in-serted properly.

Measure the resistance across the ex-ternal temperature thermistor. If it is∞ Ω, replace the humidity sensorPCB.

Replace the main PCB and check forcorrect operation.

Code ContentsRemarks

Causes Check procedures/corrective measures

C63

C64

C74

Broken fixingunit thermistorwire• The fixing unit

thermistor out-put voltagedoes not ex-ceed 0.039 VDC within 7 safter fixing con-trol has startedwith the fixingtemperature re-maining below100°C/212°F(fixing unit ther-mistor outputvoltage: 1.71 VDC).

Shorted fixingunit thermistor/abnormally hightemperature• The fixing tem-

perature ex-ceeds 250°C/482°F (fixingunit thermistoroutput voltage:4.73 V DC).

Broken externaltemperaturethermistor wire• The external

temperaturethermistor out-put is below 0.3V DC.

Broken fixing unitthermistor.

Poor contact inthe fixing unitthermistor con-nector terminals.

Defective mainPCB.

Shorted fixingunit thermistor.

Defective mainPCB.

Poor contact inthe humidity sen-sor PCB connec-tors.

Broken externaltemperature ther-mistor wire.

Defective mainPCB.

195

3-5-6

Measure the resistance across the ex-ternal temperature thermistor. If it is0 Ω, replace the humidity sensor PCB.

Replace the main PCB and check forcorrect operation.

Check the contacts.

Replace the developing unit fuse andcheck for correct operation.

Code ContentsRemarks

Causes Check procedures/corrective measures

C75

C76*

Shorted exter-nal temperaturethermistor• The externaltemperaturethermistor out-put is above 4.3V DC.

Developing unitfuse problem• The developingunit fuse doesnot blow within2 s of power be-ing applied to it,just before thedeveloping unitinitializationends.

Shorted externaltemperature ther-mistor.

Defective mainPCB.

Poor contact inthe connector.

Defective devel-oping unit fuse.

* Only for 120 V, 220 V and 240 V specifications.

195

3-6 Troubleshooting3-6-1 Image formation problems ................................................................ 3-6-1

( 1 ) No image (entirely white). .......................................................... 3-6-3( 2 ) No image (entirely black). .......................................................... 3-6-4( 3 ) Image is too light. ...................................................................... 3-6-5( 4 ) Background is visible. ................................................................ 3-6-5( 5 ) A white line appears longitudinally. ........................................... 3-6-6( 6 ) A black line appears longitudinally. ........................................... 3-6-6( 7 ) A black line appears laterally. .................................................... 3-6-7( 8 ) One side of the copy image is darker than the other. ................ 3-6-8( 9 ) Black dots appear on the image. ............................................... 3-6-8(10) Image is blurred. ........................................................................ 3-6-9(11) The leading edge of the image is consistently misaligned

with the original. ........................................................................ 3-6-9(12) The leading edge of the image is sporadically misaligned

with the original. ...................................................................... 3-6-10(13) Paper creases. ........................................................................ 3-6-10(14) Offset occurs. .......................................................................... 3-6-11(15) Black lines appear on both sides of the image

in reducation copies. ............................................................... 3-6-12(16) Image is partly missing. ........................................................... 3-6-12(17) Fixing is poor. .......................................................................... 3-6-13(18) Image is out of focus. .............................................................. 3-6-13(19) Image is not square longitudinally. .......................................... 3-6-13(20) Image is not square laterally. .................................................. 3-6-14(21) Image is partially missing laterally. .......................................... 3-6-14

3-6-2 Paper misfeeds ............................................................................... 3-6-15( 1 ) A paper jam in the registration section is detected

as soon as the main switch is turned on (J03 appears). ......... 3-6-15( 2 ) A paper jam in the eject section is detected as soon as

the main switch is turned on (J02 appears). ............................ 3-6-15( 3 ) A paper jam in the paper drawer is detected during

copying (PF appears). ............................................................. 3-6-15( 4 ) A paper jam in the registration section is detected during

copying (J03 appears). ............................................................ 3-6-16( 5 ) A paper jam in the fixing section is detected during

copying (J01 appears). ............................................................ 3-6-16( 6 ) A paper jam in the eject section is detected during

copying (J02 appears). ............................................................ 3-6-163-6-3 PCB terminal voltages ..................................................................... 3-6-17

( 1 ) Power source PCB .................................................................. 3-6-17( 2 ) Main PCB ................................................................................ 3-6-19( 3 ) AVR PCB................................................................................. 3-6-22( 4 ) Operation unit PCB ................................................................. 3-6-24

195

3-6-4 Electrical problems .......................................................................... 3-6-25( 1 ) The machine does not operate when the main switch

is turned on. ............................................................................. 3-6-25( 2 ) The drive motor does not operate (C21). ................................ 3-6-25( 3 ) The scanner motor does not operate (C30). ........................... 3-6-25( 4 ) The lens motor does not operate (C41). ................................. 3-6-26( 5 ) The mirror motor does not operate (C42). ............................... 3-6-26( 6 ) The toner feed motor does not operate. .................................. 3-6-26( 7 ) The optical section fan motor does not operate. ..................... 3-6-26( 8 ) The fixing unit fan motor does not operate. ............................. 3-6-27( 9 ) The internal cooling fan motor does not operate. .................... 3-6-27(10) The paper feed clutch does not operate. ................................. 3-6-27(11) The registration clutch does not operate. ................................ 3-6-27(12) The halogen lamp does not light. ............................................ 3-6-28(13) The halogen lamp does not turn off. ........................................ 3-6-28(14) The cleaning lamp does not light. ............................................ 3-6-28(15) The fixing heater does not turn on (C61, C63). ....................... 3-6-28(16) The fixing heater does not turn off

(fixing unit thermostat triggered, C64). .................................... 3-6-28(17) Main charging does not take place (C50). ............................... 3-6-29(18) Transfer charging does not take place (C50). ......................... 3-6-29(19) No developing bias is output. .................................................. 3-6-29(20) A paper jam is indicated as soon as the main switch

is turned on. ............................................................................. 3-6-30(21) Others. ..................................................................................... 3-6-30

3-6-5 Mechanical problems ...................................................................... 3-6-31( 1 ) No primary paper feed. ............................................................ 3-6-31( 2 ) No secondary paper feed. ....................................................... 3-6-31( 3 ) Skewed paper feed. ................................................................ 3-6-31( 4 ) The scanner does not travel. ................................................... 3-6-31( 5 ) Multiple sheets of paper are fed at one time. .......................... 3-6-31( 6 ) Paper jams. ............................................................................. 3-6-31( 7 ) Toner drops on the paper conveying path. .............................. 3-6-31( 8 ) Abnormal noise is heard. ......................................................... 3-6-32

195

3-6-1

3-6-1 Image formation problems

Contents

See page 3-6-3. See page 3-6-4. See page 3-6-5. See page 3-6-5.

(1) No image (en-tirely white).

(2) No image (en-tirely black).

(3) Image is too light.

(4) Background is visible.

See page 3-6-6. See page 3-6-6. See page 3-6-7. See page 3-6-8.

(5) A white line ap-pears longitudi-nally.

(6) A black line ap-pears longitudi-nally.

(7) A black line ap-pears laterally.

(8) One side of the copy image is darker than the other.

See page 3-6-8. See page 3-6-9. See page 3-6-9. See page 3-6-10.

(9) Black dots ap-pear on the im-age.

(10) Image is blurred.

(11) The leading edge of the im-age is consist-ently mis-aligned with the original.

(12) The leading edge of the im-age is sporadi-cally mis-aligned with the original.

195

3-6-2

See page 3-6-10. See page 3-6-11. See page 3-6-12. See page 3-6-12.

(13) Paper creases. (14) Offset occurs. (15) Black lines ap-pear on both sides of the image in re-duction copies.

(16) Image is partly missing.

See page 3-6-14.

(21) Image is par-tially missing laterally.

See page 3-6-13. See page 3-6-13. See page 3-6-13. See page 3-6-14.

(17) Fixing is poor. (18) Image is out of focus.

(19) Image is not square long-itudinally.

(20) Image is not square lateral-ly.

195

3-6-3

(1) No image (en-tirely white).

Causes1. No original present.2. No main charging.3. No transfer charging.4. All blank lamps on.5. Developing section not driven.

No original present.

No main charging.

Broken main charger wire.

Leaking main charger housing.

The connector terminals of the high-voltage transformer PCB make poor contact.

Defective main PCB.

Defective high-voltage trans-former PCB.

No transfer charging.

Broken transfer charger wire.

Leaking transfer charger hous-ing.

The connector terminals of the high-voltage transformer PCB make poor contact.

Defective main PCB.

Defective high-voltage trans-former PCB.

All blank lamps on.

Developing section not driven.

Place an original in the correct position.

Replace the wire.

Clean the main charger housing.

Check for continuity across the terminals. If none, replace them.

Run simulation 33 and check if CN8-4 on the main PCB goes low. If not, replace the main PCB.

If main charging does not take place during simu-lation 33 after the main PCB has been found to be normal, replace the high-voltage transformer PCB.

Replace the wire.

Clean the transfer charger housing.

Check for continuity across the terminals. If none, replace them.

Run simulation 33 and check if CN8-4 on the main PCB goes low. If not, replace the main PCB.

If transfer charging does not take place during simulation 33 after the main PCB has been found to be normal, replace the high-voltage transformer PCB.

Run simulation 42 and if the check pattern copy is not obtained, replace the main PCB.

Check the gears driving the developing section and replace any broken gears.

1.

2.

A.

B.

C.

D.

E.

3.

A.

B.

C.

D.

E.

4.

5.

Causes Check procedures/corrective measures

195

3-6-4

(2) No image (en-tirely black).

Causes1. Broken halogen lamp filament.2. Halogen lamp fails to light.

Take the halogen lamp out of the unit and check for continuity across the terminals. If none, re-place it (see page 3-3-16).

Check for continuity. If none, replace the thermo-stat after determining the cause (see page 3-3-17).

Check for continuity across the terminals. If none, replace them.

Run simulation 20 and check if CN7-10 on the main PCB remains low. If it does, replace the main PCB.

If the halogen lamp does not light during simula-tion 20 after the main PCB has been found to be normal, replace the AVR PCB.

1.

2.

A.

B.

C.

D.

Broken halogen lamp filament.

Halogen lamp fails to light.

The optical section thermostat is triggered.

The connector terminals of the AVR PCB make poor contact.

Defective main PCB.

Defective AVR PCB.

Causes Check procedures/corrective measures

195

3-6-5

(3) Image is too light.

Causes1. Insufficient toner.2. Deteriorated developer.3. Misadjusted developing section.4. Dirty or deteriorated drum.

Insufficient toner.

Deteriorated developer.

Misadjusted developing sec-tion.

Dirty or deteriorated drum.

If the add toner indicator is on, replace the car-tridge.

Check the number of copies made with the cur-rent developer. If it has reached the specified lim-it, replace the developer.

Adjust the developing section.

Clean the drum. If the maintenance level has been reached, replace it (see page 3-3-50).

1.

2.

3.

4.

Causes Check procedures/corrective measures

(4) Background is visible.

Causes1. Dirty optical section.2. Deteriorated developer.

Dirty optical section.

Deteriorated developer.

Clean the main and auxiliary reflectors, mirrors and other parts in the optical section.

Check the number of copies made with the cur-rent developer. If it has reached the specified lim-it, replace the developer.

1.

2.

Causes Check procedures/corrective measures

195

3-6-6

(5) A white line ap-pears longitudi-nally.

Causes1. Dirty or flawed main charger wire.2. Foreign matter in the developing section.3. Flawed drum.

Dirty or flawed main charger wire.

Foreign matter in the develop-ing section.

Flawed drum.

Clean the main charger wire. If the wire is flawed, replace it.

Check if the magnetic brush is formed uniformly. If not, replace the developer.

Replace the drum (see page 3-3-50).

1.

2.

3.

Causes Check procedures/corrective measures

Clean the mirrors, dust filter and other parts in the optical section.

Clean the drum or, if it is flawed, replace it (see page 3-3-50).

Check visually if the edge of the cleaning blade is deformed or worn. If it is, replace (see page 3-3-59).

Replace the main charger grid.

(6) A black line ap-pears longitudi-nally.

Causes1. Dirty optical section.2. Dirty or flawed drum.3. Deformed or worn cleaning blade.4. Dirty or flawed main charger grid.

Dirty optical section.

Dirty or flawed drum.

Deformed or worn cleaning blade.

Dirty or flawed main charger grid.

1.

2.

3.

4.

Causes Check procedures/corrective measures

195

3-6-7

(7) A black line ap-pears laterally.

Causes1. Flawed drum.2. Poor developing bias wire contact.3. Dirty developing section.4. No developing bias output.

Flawed drum.

Poor developing bias wire con-tact.

Dirty developing section.

No developing bias output.

Shorted developing bias wire or it makes poor contact.

Defective main PCB.

Defective high-voltage trans-former PCB.

Check the drum visually. If it is flawed, replace it (see page 3-3-50).

Check for poor developing bias wire contact.

Clean any part contaminated with toner or carrier in the developing section.

Check the developing bias wire. If there is any problem, replace it.

Run simulation 10 and check if CN8-5 on the main PCB goes low. If not, replace the main PCB.

If no developing bias voltage is output during sim-ulation 10 after the main PCB has been found to be normal, replace the high-voltage transformer PCB.

1.

2.

3.

4.

A.

B.

C.

Causes Check procedures/corrective measures

195

3-6-8

(9) Black dots ap-pear on the im-age.

Causes1. Dirty or flawed drum.2. Dirty contact glass.3. Deformed cleaning blade.

Dirty or flawed drum.

Dirty contact glass.

Deformed cleaning blade.

Clean the drum or, if it is flawed, replace it (see page 3-3-50).

Clean the contact glass.

Replace the cleaning blade if it is deformed (see page 3-3-59).

1.

2.

3.

Causes Check procedures/corrective measures

(8) One side of the copy image is darker than the other.

Causes1. Unevenly distributed halogen lamp light.2. Dirty optical section.3. Dirty main charger wire or grid.

Unevenly distributed halogen lamp light.

Dirty optical section.

Dirty main charger wire or grid.

Adjust the positions of the light adjusters (see page 3-3-18).

Clean the mirrors, dust filter and any other dirty parts in the optical section.

Check if the main charger wire or grid is dirty. If it is, replace it.

1.

2.

3.

Causes Check procedures/corrective measures

195

3-6-9

(10) Image is blurred.

Causes1. Scanner moving erratically.2. Foreign matter on the scanner rail.3. Deformed press roller.4. Drive system problem.

Scanner moving erratically.

Foreign matter on the scanner rail.

Deformed press roller.

Drive system problem.

Adjust the tension of the scanner wire (see page 3-3-19).

Check visually and remove, if any.

Check visually and replace (see page 3-3-67).

Check the gears and belts. Grease the gears or readjust the belt tension if necessary.

1.

2.

3.

4.

Causes Check procedures/corrective measures

(11) The leading edge of the im-age is consist-ently mis-aligned with the original.

Causes1. Misadjusted leading edge registration.

Misadjusted leading edge reg-istration.

Readjust the leading edge registration timing (see page 3-3-5).

1.

Causes Check procedures/corrective measures

195

3-6-10

(12) The leading edge of the im-age is sporadi-cally mis-aligned with the original.

Causes1. Registration clutch is installed or operating incorrectly.

Registration clutch is installed or operating incorrectly.

Check the installation position and operation of the registration clutch.

1.

Causes Check procedures/corrective measures

(13) Paper creases. Causes1. Paper curled.2. Paper damp.3. Defective fixing pressure springs.

Paper curled.

Paper damp.

Defective fixing pressure springs.

Check the paper storage conditions.

Check the paper storage conditions.

Replace the fixing pressure springs.

1.

2.

3.

Causes Check procedures/corrective measures

195

3-6-11

(14) Offset occurs. Causes1. Cleaning blade installed in the wrong position.2. Defective cleaning blade.3. Cleaning lamp fails to light.4. Abnormally high heat roller control temperature.

Cleaning blade installed in the wrong position.

Defective cleaning blade.

Cleaning lamp fails to light.

The connector terminals of the cleaning lamp make poor con-tact.

Defective cleaning lamp.

Defective main PCB.

Abnormally high heat roller control temperature.

Check the installation position of the cleaning blade and correct it, if necessary (see page 3-3-59).

Replace the cleaning blade.

Check for continuity across the terminals. If none, replace them.

Check for one-way continuity across all the LEDs comprising the cleaning lamp. If none, replace the cleaning lamp.

Force CN7-4 on the main PCB to go low and check if the cleaning lamp lights. If it does, re-place the main PCB.

Check if the fixing unit thermistor is installed cor-rectly.

1.

2.

3.

A.

B.

C.

4.

Causes Check procedures/corrective measures

195

3-6-12

(15) Black lines ap-pear on both sides of the image in re-duction copies.

Causes1. Dirty blank lamps.2. Defective blank lamps.3. Defective main PCB.

Dirty blank lamps.

Defective blank lamps.

Defective main PCB.

Clean the blank lamps.

Check for one-way continuity across all the LEDs comprising the blank lamps. If none, replace the blank lamp unit.

Check for signal level changes on the main PCB. Replace the main PCB if necessary.

1.

2.

3.

Causes Check procedures/corrective measures

(16) Image is partly missing.

Causes1. Paper damp.2. Paper creased.3. Drum condensation.4. Flawed drum.

Paper damp.

Paper creased.

Drum condensation.

Flawed drum.

Check the paper storage conditions.

Change the paper.

Clean the drum (see page 3-3-52).

Replace the drum (see page 3-3-50).

1.

2.

3.

4.

Causes Check procedures/corrective measures

195

3-6-13

(17) Fixing is poor. Causes1. Wrong paper.2. Defective fixing pressure springs.3. Flawed press roller.

Wrong paper.

Defective fixing pressure springs.

Flawed press roller.

Check if the paper meets specifications.

Replace the fixing pressure springs.

Replace the press roller (page 3-3-67).

1.

2.

3.

Causes Check procedures/corrective measures

(18) Image is out of focus

Causes1. Incorrect focus adjustment.

Incorrect focus adjustment. Adjust the focus of the image (see page 3-3-32).1.

Causes Check procedures/corrective measures

(19) Image is not square long-itudinally.

Causes1. The horizontal alignment of light source unit 2 is adjusted

incorrectly.

The horizontal alignment of light source unit 2 is adjusted incorrectly.

Adjust the longitudinal squareness of the image (see page 3-3-30).

1.

Causes Check procedures/corrective measures

195

3-6-14

(20) Image is not square lateral-ly.

Causes1. The vertical alignment of light source unit 2 is adjusted in-

correctly.

The vertical alignment of light source unit 2 is adjusted incor-rectly.

Adjust the lateral squareness of the image (see page 3-3-31).

1.

Causes Check procedures/corrective measures

(21) Image is par-tially missing laterally.

Causes1. Registration clutch incorrectly installed or malfunctioning.2. Paper feed clutch incorrectly installed or malfunctioning.

Registration clutch incorrectly installed or malfunctioning.

Paper feed clutch incorrectly installed or malfunctioning.

Check and correct the clutch installation condition and its operation.

Check and correct the clutch installation condition and its operation.

1.

2.

Causes Check procedures/corrective measures

195

3-6-15

3-6-2 Paper misfeeds

Check visually and remove it, if any.

With 5 V DC present at CN5-1 on theAVR PCB, check if CN5-2 on the AVRPCB remains low when theregistration switch is turned on andoff. If it does, replace the registrationswitch.

Check visually and remove it, if any.

With 5 V DC present at CN11-1 on theAVR PCB, check if CN11-3 on theAVR PCB remains low when the ejectswitch is turned on and off. If it does,replace the eject switch.

Change the paper.

Remedy if deformed.

Remedy if deformed.

Replace if deformed.

With 5 V DC present at CN5-1 on theAVR PCB, check if CN5-2 on the AVRPCB goes low when the registrationswitch is turned on. If not, replace theregistration switch.

Remedy if necessary.

See page 3-6-27.

Problem Causes/check procedures Corrective measure

(1)A paper jam inthe registrationsection isdetected assoon as themain switch isturned on (J03appears).

(2)A paper jam inthe ejectsection isdetected assoon as themain switch isturned on (J02appears).

(3)A paper jam inthe paperdrawer isdetected duringcopying (PFappears).

A piece of paper torn fromcopy paper is caught aroundthe registration switch.

Defective registration switch.

A piece of paper torn fromcopy paper is caught aroundthe eject switch.

Defective eject switch.

Paper in the drawer isextremely curled.

Check if the front or rearclaws inside the paperdrawer are deformed.

Check if the springs insidethe paper drawer aredeformed.

Check if paper feed pulleysA and B are deformed.

Defective registration switch.

Check if the paper feedclutch malfunctions.

Electrical problem with thepaper feed clutch.

195

3-6-16

Check if the contactbetween the feed rollers andfeed pulleys is correct.

Check if the contactbetween the right and leftregistration rollers is correct.

The registration clutchmalfunctions.

Electrical problem with theregistration clutch.

Check if the contactbetween the right and leftregistration rollers is correct.

Defective eject switch.

The registration clutchmalfunctions.

Electrical problem with theregistration clutch.

Check if the press roller isextremely dirty or deformed.

Check if the heat rollerseparation claws areextremely dirty or deformed.

Check if the contactbetween the eject rollersand pulleys is correct.

Problem Causes/check procedures Corrective measure

(4) A paper jamin theregistrationsection isdetected duringcopying (J03appears).

(5)A paper jam inthe fixingsection isdetected duringcopying (J01appears).

(6)A paper jam inthe ejectsection isdetected duringcopying (J02appears).

Remedy if necessary.

Remedy if necessary.

Check and remedy.

See page 3-6-27.

Remedy if necessary.

With 5 V DC present at CN11-1 on theAVR PCB, check if CN11-3 on theAVR PCB goes low when the ejectswitch is turned on. If not, replace theeject switch.

Check and remedy.

See page 3-6-27.

Clean or replace the press roller (seepage 3-3-67).

Clean or replace the heat rollerseparation claws (see page 3-3-71).

Remedy if necessary.

195

3-6-17

3-6-3 PCB terminal voltages

Precautions• When handling PCBs, do not touch connectors with bare hands or damage the board.• Do not touch any PCB containing ICs with bare hands or any object prone to static

charge.• Store PCBs wrapped in aluminum foil, conductive sponge rubber or similar material.

( 1 ) Power source PCB

120 V specifications

220 - 240 V specifications

TB1

FH1

FH3

FH7

FH8

FH2

C1 L1 C2

FH4

F1 AC 250 V 15A

F3

A

C 1

25 V

15A

F2 AC 250 V 15A

TB2

TB9

TB10

LCN3

LCN4

ZD201

D20

3

C10

3

R11

0

FB

201

FB

101

FB

102

R19

R7

R5

R18

R17

R16

FH

6F

H5

R14

JP11

TB

8T

B6

TB

5T

B7

JP10

R6

R13

R9

JP5

JP4

R1

JP3

R8

D2

DB

1

L3

ZD

1

D4

FB

4

FB5

JP8

FB103

Q10

1

CN

1

ZD102

ZD101

D201

IC201

R101

C101D101

D202

JP7

JP9

JP8

R109R102

R104R103

R106C104

C202

FG4C201

C102

T1

Q1

C10

D3

C11

D1 R4 R3

L2

R2C6

FB2

FB3

FG

FG1

C4C

5

C15

FG2

VZ1

LCN2

JP1JP2

TB4TB3

LCN1

C7 C16

C12

C13

C14

IC1

R10

C9 C8

R15FB1

PC2

PC1 R11

R105

R108

R107

R11

1

D10

2

[L]

[N]

[L]

[L]

[N]

[BLK]

[WHT]

[L]

[N]

CAUTION:FOR CONTINUED PROTECTION AGAINST FIRE HAZARD.REPLACE ONLY WITH SAME TYPE AND RATING OF FUSE.

CAUTION:TRANSFORMER CORE NOT GROUNDED. TEST BEFORE TOUCHING.

[BLK]

[WHT]

C3

1952802

3F78-1RICOH KEIKI CO.,LTD.

3F78

1310

A

TB1

FH1

FH3

FH7

FH8

FH2

C1 L1 C2

FH4

F1 AC 250 V T8AL

F3

A

C 2

50 V

T2A

L

F2 AC 250 V T8AL

TB2

TB9

TB10

LCN3

LCN4

ZD201

D20

3

C10

3

R11

0

FB

201

FB

101

FB

102

R19

R7

R5

R18

R17

R16

FH

6F

H5

R14

JP11

TB

8T

B6

TB

5T

B7

JP10

R6

R13

R9

JP5

JP4

R1

JP3

R8

D2

DB

1

L3

ZD

1

D4

FB

4

FB5

JP8

FB103

Q10

1

CN

1

ZD102

ZD101

D201

IC201

R101

C101D101

D202

JP7

JP9

JP8

R109R102

R104R103

R106C104

C202

FG4C201

C102

T1

Q1

C10

D3

C11

D1 R4 R3

L2

R2C6

FB2

FB3

FG

FG1

C4

C5

C15

FG2

VZ1

LCN2

JP1JP2

TB4TB3

LCN1

C7 C16

C12

C13

C14

IC1

R10

C9 C8

R15FB1

PC2

PC1 R11

R105

R108

R107

R11

1

D10

2

[L]

[N]

[L]

[L]

[N]

[BLK]

[WHT]

[L]

[N]

CAUTION:FOR CONTINUED PROTECTION AGAINST FIRE HAZARD.REPLACE ONLY WITH SAME TYPE AND RATING OF FUSE.

CAUTION:TRANSFORMER CORE NOT GROUNDED. TEST BEFORE TOUCHING.

[BLK]

[WHT]

C3

1952803

3F78-2RICOH KEIKI CO.,LTD.

3F78

2310

A

195

3-6-18

Terminals (CN) Voltage Remarks

TB1 TB2 120 V AC AC supply, input220 - 240 V AC

TB3 TB2 120 V AC AC supply for MSW, output220 - 240 V AC

TB4 TB2 120 V AC AC supply, input220 - 240 V AC

TB5 TB6 120 V AC AC supply for SSW, output220 - 240 V AC

TB7 TB8 120 V AC AC supply, input220 - 240 V AC

TB9 TB10 120 V AC AC supply for AVRPCB and DH*, output220 - 240 V AC

1-1 1-3 24 V DC 24 V DC supply for MPCB, output1-2 1-4 24 V DC 24 V DC supply for AVRPCB, output1-7 1-5 5 V DC 5 V DC supply for MPCB, output1-8 1-6 5 V DC 5 V DC supply AVRPCB, output

* Option available only for 120 V specifications.

195

3-6-19

( 2 ) Main PCB

CN6

C5C3

TR

2

CN

7

141

BE

C

R5

D5D6

DT5

DT4

DT3

TR3

CN13

DT6

E C

C1

B

D4

D3

D2

C4IC17

IC16

IC15

IC12IC14

IC13

8 1

CN5 CN4

CN

3C

N2

R12

R11

R107

R108

IC11

CN

8C

N9

R4

R1

1

17

15

18

R10

R9

R8

R7

R6

4 1

1

1

1

1

9

100 31

81 50

IC9

IC5IC6

IC7

IC10IC8X1 1

1

1

12

CN10

13

CN11

110

CN12

19

9

1

8

1

5

9

1

1

5

ZD1

C2

IC1 DT1

D1

8

5

80 51

1 30

5

1115

1

1

12

116

CN

1

12

5

10+

+

+

+

+1952801 REV:2

IC41

9

IC31

9

IC21

8

Terminals (CN) Voltage Remarks

1-1 5-2 24 V DC 24 V DC supply for MSW, output1-2 5-2 24 V DC MSW on/off, output

2-1 5-2 24/0 V DC (pulse) OPCB LED lighting signal, output (SEG a)2-2 5-2 24/0 V DC (pulse) OPCB LED lighting signal, output (SEG b)2-3 5-2 24/0 V DC (pulse) OPCB LED lighting signal, output (SEG c)2-4 5-2 24/0 V DC (pulse) OPCB LED lighting signal, output (SEG d)2-5 5-2 24/0 V DC (pulse) OPCB LED lighting signal, output (SEG e)2-6 5-2 24/0 V DC (pulse) OPCB LED lighting signal, output (SEG f)2-7 5-2 24/0 V DC (pulse) OPCB LED lighting signal, output (SEG g)2-8 5-2 24/0 V DC (pulse) OPCB scan sink, output (DIG 0)2-9 5-2 24/0 V DC (pulse) OPCB scan sink, output (DIG 1)2-10 5-2 24/0 V DC (pulse) OPCB scan sink, output (DIG 2)2-11 5-2 24/0 V DC (pulse) OPCB scan sink, output (DIG 3)2-12 5-2 24/0 V DC (pulse) OPCB scan sink, output (DIG 4)2-13 5-2 24/0 V DC (pulse) OPCB scan sink, output (DIG 5)2-14 5-2 24/0 V DC (pulse) OPCB scan sink, output (DIG 6)2-15 5-3 0/5 V DC (pulse) OPCB return, input (KEY 0)

195

3-6-20

Terminals (CN) Voltage Remarks

*1 Standard equipment only for 120 V, 220 V and 240 V specifications.*2 For 230 V specifications and optional for 240 V specifications.

2-16 5-3 0/5 V DC (pulse) OPCB return, input (KEY 1)

3-1 5-2 24 V DC 24 V DC supply for TC, output3-2 5-2 0/24 V DC TC on/off, output

4-1 4-2 5 V DC 5 V DC supply for HUMPCB, output4-3 4-4 HUMPCB humidity detection voltage,

input4-5 4-4 HUMPCB temperature detection

voltage, input

5-1 5-2 24 V DC 24 V DC supply, input5-4 5-3 5 V DC 5 V DC supply, input

6-1 6-2 0/24 V DC TCDSW on/off, input6-3 6-6 24 V DC 24 V DC supply for DEVF, output*1

6-4 6-6 0/24 V DC Developing unit new/old differentiationsignal, input

6-5 6-6 24 V DC 24 V DC supply for TNS, output6-7 6-6 TNS detection voltage, input6-8 6-6 TNS control voltage, output

7-1 5-3 0/5 V DC Zero-cross signal for AVR PCB, output7-2 5-2 24/0 V DC Flicker resistor on/off, output*2

7-3 5-3 5 V DC 5 V DC supply for AVRPCB, output7-4 5-2 0/24 V DC CL on/off, output7-5 5-3 0/5 V DC RSW on/off, input7-6 5-2 0/24 V DC PFCL on/off, output7-7 5-2 0/24 V DC RCL on/off, output7-8 5-3 FTH detection voltage, input7-9 5-3 0/5 V DC ESW on/off, input7-10 5-2 0/24 V DC (pulse) HL light intensity control PWM, output7-11 5-2 0/24 V DC H on/off, output7-12 5-2 0/24 V DC DM ALM, input7-13 5-2 0/24 V DC DM on/off, output7-14 5-2 0/12/24 V DC FFM and ICFM full speed/half speed/off,

output

8-1 8-6 0/24 V DC TFM on/off, output8-2 8-6 0/12 V DC HVTPCB main/transfer charging ALM,

input8-3 8-6 0/12 V DC HVTPCB PHOTO, output8-4 8-6 0/12 V DC HVTPCB main/transfer charging on/off,

output8-5 8-6 0/24 V DC HVTPCB developing bias on/off, output8-7 8-6 24 V DC 24 V DC supply for HVTPCB, output

9-1 5-2 0/24 V DC (pulse) SM coil energization pulse, output (SM B)9-2 5-2 0/24 V DC (pulse) SM coil energization pulse, output (SM B)9-3 5-2 0/24 V DC (pulse) SM coil energization pulse, output (SM A)9-4 5-2 0/24 V DC (pulse) SM coil energization pulse, output (SM A)

195

3-6-21

Terminals (CN) Voltage Remarks

9-5 5-2 24 V DC 24 V DC supply for SM, output

10-1 10-3 5 V DC 5 V DC supply for HPSW, output10-2 10-3 5/0 V DC HPSW on/off, input

11-1 5-2 0/24 V DC (pulse) LM coil energization pulse, output (LMφ2)

11-2 5-2 0/24 V DC (pulse) LM coil energization pulse, output (LMφ1)

11-3 5-2 0/24 V DC (pulse) LM coil energization pulse, output (LMφ3)

11-4 5-2 24 V DC 24 V DC supply for LM, output11-5 5-2 0/24 V DC (pulse) LM coil energization pulse, output (LM

φ4)11-6 5-2 0/24 V DC (pulse) MM coil energization pulse, output (MM

φ2)11-7 5-2 0/24 V DC (pulse) MM coil energization pulse, output (MM

φ1)11-8 5-2 0/24 V DC (pulse) MM coil energization pulse, output (MM

φ3)11-9 5-2 24 V DC 24 V DC supply for MM, output11-10 5-2 0/24 V DC (pulse) MM coil energization pulse, output (MM

φ4)

12-1 12-2 5 V DC 5 V DC supply for MHPSW, output12-3 12-2 5/0 V DC MHPSW on/off, input12-4 12-6 24 V DC 24 V DC supply for AES, output12-5 12-6 AES detection voltage, input12-7 12-8 5 V DC 5 V DC supply for LHPSW, output12-9 12-8 5/0 V DC LHPSW on/off, input

13-1 5-2 24 V DC 24 V DC supply for OPFM, output13-2 5-2 0/24 V DC OPFM on/off, output

195

3-6-22

( 3 ) AVR PCB

120 V specifications

220 - 240 V specifications

R18

R1

VR1

R2

R8

R6

R3

VR

3

VR

2

R4

R22

J7J8

R19

R16

A

R17

AR

17B

R16

B

R16

C

R14

R13

R12

R10 R15

R11

C5

NP

C4

C3

C10

C7

C6

CN

14

CN

8C

N9

PC

5

CN

13CN

10C8 J1

3

J19

J14

J18

R23

R24

R25

D2

J2 J21

R21

D3

R5

R7 R

9

B Q1

B Q2

C1

C2CR2 TB2

TB1RF

CR3CN3

1

1

1

1

1

1

1

11

111

1

–

1

CR1

C9 TRC2

TRC3

TRC1

DB

J9J22

CN12

CN1

CN4

CN2

CN7

CN11

CN5CN6

J5

J6

J10

J20J17

J12

J11

J16J15

ZD1

D1

+

+

+

+

+

J1

J4

J3

PC1

PC2

PC3 L

PC

4

1952807 170V

WARNINGHEAT SINK NOT GROUND, TEST BEFORE TOUCHING.

R18

R1

VR1

R2

R8

R6

R3

VR

3

VR

2

R4

R22

J7J8

R19

R17

AR

17B

R16

B

R14

R13

R12

R10 R15

R11

C5

NP

C4

C3

C7

C6

CN

14

CN

8C

N9

CN

13CN

10C8 J1

3

J19

J14

J18

R24

R25

D2

J2 J21

R21

D3

R5

R7 R

9

B Q1

B Q2

C1

C2CR2 TB2

TB1RF

1

1

1

1

1

1

11

111

1

–

1

CR1

C9 TRC2

TRC1

DB

J9J22

CN12

CN1

CN4

CN2

CN7

CN11

CN5CN6

J5

J6

J10

J17

J12

J11

J16J15

ZD1

D1

+

+

+

+

+

J1

J4

J3

PC1

PC2

PC3 L

PC

4

1952806 100V

WARNINGHEAT SINK NOT GROUND, TEST BEFORE TOUCHING.

195

3-6-23

Terminals (CN) Voltage Remarks

TB1 TB2 120 V AC AC supply for H, output220 - 240 V AC

1-1 1-2 120 V AC AC supply, input220 - 240 V AC

2-1 2-3 HL control voltage, output

3-1 3-4 220 - 240 V AC 220 - 240 V AC supply for flickerresistor, output*

4-1 12-2 0/12/24V V DC FFM full speed/half speed/off, output4-2 12-2 0/24 V DC DM on/off, input4-3 12-2 0/24 V DC DM ALARM, output4-4 12-2 0/24 V DC H on/off, input4-5 12-2 0/24 V DC (pulse) HL light intensity control PWM, input4-6 12-3 0/5 V DC ESW on/off, output4-7 12-3 FTH detection voltage, output4-8 12-2 0/24 V DC RCL on/off, input4-9 12-2 0/24 V DC PFCL on/off, input4-10 12-3 0/5 V DC RSW on/off, output4-11 12-2 0/24 V DC CL on/off, input4-12 12-3 5 V DC 5 V DC supply, input4-13 12-2 24/0 V DC Flicker resistor on/off, input*4-14 12-3 0/5 V DC Zero-cross signal, input

5-1 5-3 5 V DC 5 V DC supply for RSW, output5-2 5-3 0/5 V DC RSW on/off, input

6-1 12-2 24 V DC 24 V DC supply for PFCL, output6-2 12-2 0/24 V DC PFCL on/off, output

7-1 12-2 24 V DC 24 V DC supply for RCL, output7-2 12-2 0/24 V DC RCL on/off, output

8-2 8-1 24 V DC 24 V DC supply for DM, output8-3 8-1 0/24 V DC DM on/off, output8-4 8-1 0/24 V DC DM ALM, input

9-1 12-2 24 V DC 24 V DC supply for CL, output9-2 12-2 0/24 V DC CL on/off, output

10-1 12-2 24 V DC 24 V DC supply for FFM, output10-2 12-2 0/12/24 V DC FFM full speed/half speed/off, output

11-1 11-2 5 V DC 5 V DC supply for ESW, output11-3 11-2 0/5 V DC ESW on/off, input

12-1 12-2 24 V DC 24 V DC supply, input12-4 12-3 5 V DC 5 V DC supply, input

13-1 12-3 FTH detection voltage, input13-2 12-3 5 V DC 5 V DC supply for FTH, output

14-1 12-2 24 V DC 24 V DC supply for ICFM, output14-2 12-2 0/12/24 V DC ICFM full speed/half speed/off, output

* For 230 V specifications and optional for 240 V specifications.

195

3-6-24

( 4 ) Operation unit PCB

Terminals (CN) Voltage Remarks

1-1 MPCB 0/5 V DC (pulse) MPCB return, output (KEY 1)1-2 5-3 0/5 V DC (pulse) MPCB return, output (KEY 0)1-3 24/0 V DC (pulse) Scan sink, input (DIG 6)1-4 24/0 V DC (pulse) Scan sink, input (DIG 5)1-5 24/0 V DC (pulse) Scan sink, input (DIG 4)1-6 24/0 V DC (pulse) Scan sink, input (DIG 3)1-7 24/0 V DC (pulse) Scan sink, input (DIG 2)1-8 24/0 V DC (pulse) Scan sink, input (DIG 1)1-9 24/0 V DC (pulse) Scan sink, input (DIG 0)1-10 24/0 V DC (pulse) LED lighting signal, input (SEG g)1-11 24/0 V DC (pulse) LED lighting signal, input (SEG f)1-12 24/0 V DC (pulse) LED lighting signal, input (SEG e)1-13 24/0 V DC (pulse) LED lighting signal, input (SEG d)1-14 24/0 V DC (pulse) LED lighting signal, input (SEG c)1-15 24/0 V DC (pulse) LED lighting signal, input (SEG b)1-16 24/0 V DC (pulse) LED lighting signal, input (SEG a)

2-1 MPCB 5/0 V DC (pulse) BL LED lighting source, output (BL SEG a)2-2 5-3 5/0 V DC (pulse) BL LED lighting source, output (BL SEG b)2-3 5/0 V DC (pulse) BL LED lighting source, output (BL SEG c)2-4 5/0 V DC (pulse) BL LED lighting source, output (BL SEG d)2-5 5/0 V DC (pulse) BL LED lighting source, output (BL SEG e)2-6 0/5 V DC (pulse) BL scan sink, output (BL DIG 5)2-7 0/5 V DC (pulse) BL scan sink, output (BL DIG 6)

L5 L8 L9

SW7CN2

1 7SW8 SW9

SW4 SW3 SW5 SW6 SW2

SW1

L10

L11

L12

L13

L14 L15 L4L2

7SEGMENT LED

L1

161

CN

1

L3

L19

L6L18L17L16

L20

195

3-6-25

No electricity at thepower outlet.

The power cord is notplugged in properly.

The front cover orrelease unit is notclosed completely.

Broken power cord.

Defective mainswitch.

Blown fuse in thepower source PCB.

Defective safetyswitch.

Defective powersource PCB.

Poor contact in thedrive motor connectorterminals.

Defective main PCB.

Broken drive motorgear.

Broken scanner motorcoil.

Poor contact in thescanner motorconnector terminals.

Defective main PCB.

3-6-4 Electrical problems

Measure the input voltage.

Check the contact between the power plugand the outlet.

Check the front cover and release unit.

Check for continuity. If none, replace the cord.

Check for continuity across the contacts. Ifnone, replace the main switch.

Check for continuity. If none, remove thecause of blowing and replace the fuse.

Check for continuity across the contacts of thesafety switch. If none, replace the switch.

With AC present, check for 24 V DC at CN1-1and CN1-2 on the power source PCB and 5 VDC at CN1-7 and CN1-8. If none, replace thepower source PCB.

Check for continuity across the connectorterminals. If none, replace them.

Run simulation 10 and check if CN7-13 on themain PCB goes low. If not, replace the mainPCB.

Check visually and replace the drive motor ifnecessary.

Check for continuity across the coil. If none,replace the scanner motor.

Check for continuity across the connectorterminals. If none, replace them.

Run simulation 21 and check if the motordrive coil energization pulse signals are outputat CN9-1, -2, -3 and -4 on the main PCB. Ifnot, replace the main PCB.

Problem Causes Check procedures/corrective measures

(1)The machinedoes notoperate whenthe mainswitch isturned on.

(2)The drivemotor doesnot operate(C21).

(3)The scannermotor doesnot operate(C30).

195

3-6-26

Broken lens motorcoil.

Poor contact in thelens motor connectorterminals.

Defective main PCB.

Broken mirror motorcoil.

Poor contact in themirror motorconnector terminals.

Defective main PCB.

Broken toner feedmotor coil.

Poor contact in thetoner feed motorconnector terminals.

Defective main PCB.

Broken optical sectionfan motor coil.

Poor contact in theoptical section fanmotor connectorterminals.

Defective main PCB.

Problem Causes Check procedures/corrective measures

Check for continuity across the coil. If none,replace the lens motor.

Check for continuity across the connectorterminals. If none, replace them.

Run simulation 23 and check if the motordrive coil energization pulse signals are outputat CN11-1, -2, -3 and -5 on the main PCB. Ifnot, replace the main PCB.

Check for continuity across the coil. If none,replace the mirror motor.

Check for continuity across the connectorterminals. If none, replace them.

Run simulation 23 and check if the motordrive coil energization pulse signals are outputat CN11-6, -7, -8 and -10 on the main PCB. Ifnot, replace the main PCB.

Check for continuity across the coil. If none,replace the toner feed motor coil.

Check for continuity across the connectorterminals. If none, replace them.

Run simulation 10 and check if CN8-1 on themain PCB goes low. If not, replace the mainPCB.

Check for continuity across the coil. If none,replace the optical section fan motor.

Check for continuity across the connectorterminals. If none, replace them.

Run simulation 20 and check if CN13-2 on themain PCB goes low. If not, replace the mainPCB.

(4)The lensmotor doesnot operate(C41).

(5)The mirrormotor doesnot operate(C42).

(6)The tonerfeed motordoes notoperate.

(7)The opticalsection fanmotor doesnot operate.

195

3-6-27

Broken fixing unit fanmotor coil.

Poor contact in thefixing unit fan motorconnector terminals.

Defective main PCB.

Broken internalcooling fan motor coil.

Poor contact in theinternal cooling fanmotor connectorterminals.

Defective main PCB.

Broken paper feedclutch coil.

Poor contact in thepaper feed clutchconnector terminals.

Defective main PCB.

Broken registrationclutch coil.

Poor contact in theregistration clutchconnector terminals.

Defective main PCB.

Problem Causes Check procedures/corrective measures

(8)The fixing unitfan motordoes notoperate.

(9)The internalcooling fanmotor doesnot operate.

(10)The paperfeed clutchdoes notoperate.

(11)Theregistrationclutch doesnot operate.

Check for continuity across the coil. If none,replace the fixing unit fan motor.

Check for continuity across the connectorterminals. If none, replace them.

Run simulation 10 and check if CN7-14 on themain PCB goes low. If not, replace the mainPCB.

Check for continuity across the coil. If none,replace the internal cooling fan motor.

Check for continuity across the connectorterminals. If none, replace them.

Run simulation 10 and check if CN14-2 on themain PCB goes low. If not, replace the mainPCB.

Check for continuity across the coil. If none,replace the paper feed clutch.

Check for continuity across the connectorterminals. If none, replace them.

Run simulation 02 and check if CN7-6 on themain PCB goes low. If not, replace the mainPCB.

Check for continuity across the coil. If none,replace the registration clutch.

Check for continuity across the connectorterminals. If none, replace them.

Run simulation 02 and check if CN7-7 on themain PCB goes low. If not, replace the mainPCB.

195

3-6-28

Check for continuity. If none, replace thehalogen lamp (see page 3-3-16).

See page 3-6-4.

If the HL CONT (PWM) signal is alwaysoutput from CN7-10 on the main PCB, replacethe main PCB.

If the halogen lamp does not turn off when HLCONT (PWM) is not output to CN4-5 on theAVR PCB, replace the AVR PCB.

Check for one-way continuity across all theLEDs comprising the cleaning lamp. If none,replace the cleaning lamp.

Check for continuity across the connectorterminals. If none, replace them.

Run simulation 10 and check if CN7-4 on themain PCB goes low. If not, replace the mainPCB.

Check for continuity. If none, replace the fixingheater (see page 3-3-62).

Check for continuity across the thermostat. Ifnone, remove the cause of blowing andreplace the fixing unit thermostat.

Measure the resistance. If it is ∞Ω, replace thefixing unit thermistor.

Check visually and clean the thermistorsensor part.

If the fixing heater stays on with CN4-4 on theAVR PCB high, replace the AVR PCB.

If CN7-11 on the main PCB is always low,replace the main PCB.

Broken halogen lampfilament.

Optical sectionthermostat triggered.

Poor contact in theAVR PCB connectorterminals.

Defective main PCB.

Defective AVR PCB.

Defective main PCB.

Defective AVR PCB.

Defective cleaninglamp.

Poor contact in thecleaning lampconnector terminals.

Defective main PCB.

Broken fixing heaterwire.

Fixing unit thermostat1 or 2 triggered.

Broken fixing unitthermistor.

Dirty sensor part ofthe fixing unitthermistor.

Defective AVR PCB.

Defective main PCB.

Problem Causes Check procedures/corrective measures

(12)The halogenlamp does notlight.

(13)The halogenlamp does notturn off.

(14)The cleaninglamp does notlight.

(15)The fixingheater doesnot turn on(C61, C63).

(16)The fixingheater doesnot turn off(fixing unitthermostattriggered,C64).

195

3-6-29

Check visually and replace the main chargerwire if it is broken (see page 3-3-13).

See page 3-6-3.

Check visually and replace the transfercharger wire if it is broken (see page 3-3-55).

See page 3-6-3.

Check the developing bias wire for poorcontact.

Check for continuity across the connectorterminals. If none, replace them.

Run simulation 10. If no developing bias isoutput while CN1-3 on the high-voltagetransformer PCB goes low, replace the high-voltage transformer PCB.

Run simulation 10 and check if CN8-5 on themain PCB goes low. If not, replace the mainPCB.

Broken main chargerwire.

Leaking main chargerhousing.

Poor contact in thehigh-voltagetransformer PCBconnector terminals.

Defective main PCB.

Defective high-voltagetransformer PCB.

Broken transfercharger wire.

Leaking transfercharger housing.

Poor contact in thehigh-voltagetransformer PCBconnector terminals.

Defective main PCB.

Defective high-voltagetransformer PCB.

Poor contact in thedeveloping bias wire.

Poor contact in thehigh-voltagetransformer PCBconnector terminals.

Defective high-voltagetransformer PCB.

Defective main PCB.

Problem Causes Check procedures/corrective measures

(17)Main chargingdoes not takeplace (C50).

(18)Transfercharging doesnot take place(C50).

(19)Nodevelopingbias is output.

195

3-6-30

A piece of paper tornfrom copy paper iscaught around theregistration or ejectswitch.

Defective registrationswitch.

Defective eject switch.

Wiring is broken,shorted or makespoor contact.

Noise.

Problem Causes Check procedures/corrective measures

(20)A paper jamis indicated assoon as themain switch isturned on.

(21)Others.

Check visually and remove, if any.

With 5 V DC present at CN5-1 on the AVRPCB, if CN5-2 on the AVR PCB remains lowwhen the registration switch is turned on andoff, replace the registration switch.

With 5 V DC present at CN11-1 on the AVRPCB, if CN11-3 on the AVR PCB remains lowwhen the eject switch is turned on and off,replace the eject switch.

Check for continuity. If none, repair.

Locate the source of noise and remove.

195

3-6-31

Check if the surfaces of paper feedpulleys A & B, feed roller and pulleyare dirty with paper powder.

Electrical problem with the paper feedclutch.

Check if the surfaces of the feed rollerand pulley, right and left registrationrollers are dirty with paper powder.

Electrical problem with the registrationclutch.

Check if the front or rear claws insidethe paper drawer are deformed.

Check if the springs inside the paperdrawer are deformed.

Check if the scanner wires are loose.

Electrical problem with the scannermotor.

Check if the front or rear claws insidethe paper drawer are deformed.

Check if the paper is curled.

Check if the paper is extremely curled.

Check if the front or rear claws insidethe paper drawer are deformed.

Check if the springs in the paperdrawer are deformed.

Check if the press roller is extremelydirty or deformed.

Check if the heat roller separationclaws are extremely dirty or deformed.

Check if the developing unit isextremely dirty.

3-6-5 Mechanical problems

Clean with isopropyl alcohol.

See page 3-6-27.

Clean with isopropyl alcohol.

See page 3-6-27.

Remedy if deformed.

Remedy or replace ifdeformed.

Reinstall the scanner wires(see page 3-3-19).

See page 3-6-25.

Remedy if deformed.

Change the paper.

Change the paper.

Remedy if deformed.

Remedy if deformed.

Clean or replace the pressroller (see page 3-3-67).

Clean or replace the heatroller separation claws (seepage 3-3-71).

Clean the developing unit.

Problem Causes/check procedures Corrective measure

(1)No primarypaper feed.

(2)No secondarypaper feed.

(3)Skewed paperfeed.

(4)The scannerdoes not travel.

(5)Multiple sheetsof paper are fedat one time.

(6)Paper jams.

(7)Toner drops onthe paperconveying path.

195

3-6-32

Problem Causes/check procedures Corrective measure

(8)Abnormal noiseis heard.

Check if the rollers and gears operatesmoothly.

Check if the paper feed clutch andregistration clutch are installedcorrectly.

Grease the bushings andgears.

Remedy.

195

3-7 AppendixesTiming chart No. 1 ......................................................................................... 3-7-1Timing chart No. 2 ......................................................................................... 3-7-2Timing chart No. 3 ......................................................................................... 3-7-3Power source PCB ........................................................................................ 3-7-4AVR PCB ...................................................................................................... 3-7-5Operation unit PCB ....................................................................................... 3-7-6Main PCB ...................................................................................................... 3-7-7Connection diagram ...................................................................................... 3-7-8Wiring diagram .............................................................................................. 3-7-9

AA A

A

AA A

A

E

E E

E

E

E E

E

EA

EA

DC-1460 S/M (MCA,MCE)

195

A B C D E F G H I J

A B C D E F G H I J

1

2

3

4

5

6

7

8

1

2

3

4

5

6

7

8

Timing chart No. 1 The main switch is turned on when the fixing temperature (as measured by the fixing unit thermistor) is highe r than 12 °C/53.6°F and the machine internal temperature (as meassured by the drum thermistor) is higher than 15 °C/59°F

3-7-1

185°C/365°F

Fix

ing

tem

pera

ture

175°C/347°F

160°C/320°F

80°C/176°F

CN7-11

CN8-5

CN7-13

Copy start indicator

CN7-14

CN2-1 - CN2-7

CN8-4

H

DB

DM

FFM

BL

HV

200 ms

1 s

Fast

All off All on All off

29 s*

1 s

2 s

50 ms

285 ms

10 s

200 ms

MS

W: O

n

* If, when the main switch is turned onFTH temperature ≥ 10°C/50°F and ambient temperature ≥ 15°C/59°F: 29 sFTH temperature < 10°C/50°F or ambient temperature < 15°C/59°F: 44 sFTH temperature ≥ 80°C/176°F: 5 s

AA A A

A

AA A A

A

E

E E E

E

E

E E E

E

DC-1460 S/M (MCA,MCE)

195

A B C D E F G H I J

A B C D E F G H I J

1

2

3

4

5

6

7

8

1

2

3

4

5

6

7

8

Timing chart No. 2 A single copy (70% magnification ratio, bypass feed, A4R/8 1/2" × 14" paper)

3-7-2

Print key

RSW

ESW

HPSW

SM FWD

SM REV

DM

PFCL

RCL

DB

HL

HV

BL

FFM

OPFM

H (Fixing temp.)

TC

CN7-5

CN7-9

CN10-2

CN9-1 - CN9-4

CN9-1 - CN9-4

CN7-13

CN7-6

CN7-7

CN8-5

CN7-10

CN8-4

CN2-1 - CN2-7

CN7-14

CN13-2

CN3-2

RS

W: O

n

RS

W: O

ff

HP

SW

: On

ES

W: O

ff

Inpu

tO

utpu

t

100 ms

100 ms

500 ms min

2845 P

198 ms max.

65 ms 5 P

100 ms

200 ms

330 ms246 P (SIM58)

50 ms

127 P (SIM54)All on

190 ms(SIM59)

All on

Side erasure 285 ms All off

Slow SlowFast

High-level control

300 ms

3000 ms

384 ms

AA A

A

AA A

A

E

E E

E

E

E E

E

EA

EA

DC-1460 S/M (MCA,MCE)

195

A B C D E F G H I J

A B C D E F G H I J

1

2

3

4

5

6

7

8

1

2

3

4

5

6

7

8

3-7-3

Timing chart No. 3 A single copy (100% magnification ratio, drawer feed, A4R/8 1/2" × 14" paper, AE)

910 P55 msmin.

198 ms max.

Print key

RSW

ESW

HPSW

SM FWD

SM REV

DM

PFCL

RCL

DB

HL

HV

BL

FFM

OPFM

H (Fixing temp.)

TC

CN7-5

CN7-9

CN10-2

CN9-1 - CN9-4

CN9-1 - CN9-4

CN7-13

CN7-6

CN7-7

CN8-5

CN7-10

CN8-4

CN2-1 - CN2-7

CN7-14

CN13-2

CN3-2

Prin

t key

: On

RS

W: O

ff

HP

SW

: On

HP

SW

: On

ES

W: O

ff

Inpu

tO

utpu

t

100 ms

100 ms

65 ms 5 P100 ms 5 P

100 ms

200 ms

330 ms246 P (SIM58)

50 ms

450 ms

127 P (SIM54)All on

190 ms(SIM59)

All on

Side erasure 285 ms

384 ms

All off

Slow SlowFast

High-level control

300 ms

2358 P

600 ms

350 ms

3000 ms

AA A A

A

AA A A

A

E

E E E

E

E

E E E

E

DC-1460 S/M (MCA,MCE)

195

A B C D E F G H I J

A B C D E F G H I J

1

2

3

4

5

6

7

8

1

2

3

4

5

6

7

8

3-7-4

Power source PCB

F1 F3 L2*TB1

IN1

TB7IN

TB8IN

1

1

L

F2TB2IN1

TB3

TB6

TB4

OUT

OUT

1

1

TB5OUT

TB9OUT1

TB10OUT1

IN

1

1

N

R1

C1

C2 C3

C8

R3

R2

C4VZ1

L1 L3

R4

D1

ZD1

R17

D3 R11

–

~

~DB1

+

C5 C6

FB2 FB3

FB1

C16 C7

FG

C12

C13

R18

+

C11

PC2

IC1

PC1

C15

C14

R15

R16

R14

+C9

C10

R9

R8 R5

R6

D2

FB

4

R7R19

R10

FB5

D4

R13

DG

Q1

S

FB101

R101 C101

D101

C102

FB102

FB201

D201 D202

PC1

+

C201

+

C202

+

IC2011 2

3 4

R10

2

R10

3

R10

4

R10

5C

103

R10

6

R11

0

R11

1

R10

9

R10

7

Q101

D10

2Z

D10

2

D20

3Z

D20

1

ZD

101

FB103

+

C10

4

PC

2

CN1

OUT1

CN1

OUT2

+24 V

CN1

OUT7

CN1

OUT8

+5 V

CN1

OUT3

CN1

OUT4

DG

CN1

OUT5

CN1

OUT6

SG

T1

* For 220 - 240 V specifications only.

AA A

A

AA A

A

E

E E

E

E

E E

E

EA

EA

DC-1460 S/M (MCA,MCE)

195

A B C D E F G H I J

A B C D E F G H I J

1

2

3

4

5

6

7

8

1

2

3

4

5

6

7

8

3-7-5

AVR PCB

+– +

–

+

+

+

+

CN12-4

R24

R19 R18

R23 R1

R3

R2C2

PC4

C3

C6

C4

C5

PC3

PC2

PC5

TRC1

TRC2

TRC3 CR3

CR1

CR2

ZDVR1

R5

R7 R8R14

R15

R22

R12

(R16A)

(R16B)

(R16C)

R13

R9

R11

R10

VR3

VR2

R4

R6Q1

Q2 HIC

D1D3D2

DB RF

C7

L

C8

C9

C10

R21

1 65 7

11

137

1

2

3

5.9

5.9–12

0 V

SS

ZERO

Flickerresistor(for 230 V specifications and optional for 240 V specifications)

+12 12

14

8

4

–12

IC

8

423

C1

PC1

PC1

PC5

PC2

PC4

R25

CN12-3CN12-2CN12-1

CN10-2CN10-1CN9-2CN9-1

CN5-3CN5-2

CN5-1CN6-1CN6-2

CN7-1CN7-2CN11-2CN11-3

CN11-1CN13-2CN13-1CN13-3CN14-2

CN14-1

FFM

PART NAMETRC3PC5CN3CR3C10R16A, C

MOUNTNOT MOUNTNOT MOUNTNOT MOUNT

MOUNTMOUNTMOUNTMOUNTMOUNTMOUNT

NOT MOUNTNOT MOUNTNOT MOUNTNOT MOUNTR23

120 V 220 - 240 V

24 VCL24 V

G (5 V)RSW

5 V24 VPFCL

24 VRCLG (5 V)ESW

5 V5 VFTH

ICFM

24 V

CN4-14CN4-13CN4-12CN4-11CN4-10CN4-9CN4-8

ZERO CROSSFlicker REM

5 VCL REM

RSWPFCL

RCL

CN4-7FTHCN4-6ESWCN4-5HL CONTCN4-4H REM

CN4-3DM ALMCN4-2DM REM

CN4-1FFM REMCN8-4CN8-3CN8-1CN8-2

DM ALMDM REM

DM G (24 V)

24 V

5 VG (5 V)

G (24 V)24 V

R17AR17B

TB1

CN2-1

CN1-1

CN1-2

CN2-3

H LIVE

HL LIVE

AC LIVE

AC COM

HL COM

CN3-4

CN3-1

TB2 H COM

AA A A

A

AA A A

A

E

E E E

E

E

E E E

E

DC-1460 S/M (MCA,MCE)

195

A B C D E F G H I J

A B C D E F G H I J

1

2

3

4

5

6

7

8

1

2

3

4

5

6

7

8

Operation unit PCB

3-7-6

CN

1-16

SE

G a

CN

1-15

SE

G b

CN

1-14

SE

G c

CN

1-13

SE

G d

CN

1-12

SE

G e

CN

1-11

SE

G f

CN

1-10

SE

G g

CN

1-9

DIG

0

CN

1-8

DIG

1

CN

1-7

DIG

2

CN

1-6

DIG

3

CN

1-5

DIG

4

CN

1-4

DIG

5

CN

1-3

DIG

6

CN

1-1

KE

Y 1

CN2-7 BL DIG 6

b1

c1

f2 b2f3

L5 L8 L9

SW7CN2

1 7SW8 SW9

SW4 SW3 SW5 SW6 SW2

SW1

L10

L11

L12

L13

L14 L15 L4L2

7SEGMENT LED

L1

161

CN

1

L3

L19

L6

L18

L17

L16

L20e3c2

b3

c3

a2

7 SEGMENT LED

a3

g2 g3

d2 d3

e2

CN2-6 BL DIG 5CN2-5 BL SEG eCN2-4 BL SEG dCN2-3 BL SEG cCN2-2 BL SEG bCN2-1 BL SEG a

CN

1-2

KE

Y 0

L1 L2 L3 L4 L5 L6D9SW9

D7SW7

D8SW8

D5SW5

D6SW6

D3SW3

D4SW4

D1SW1

D2SW2

L8 L9 L10 L11 L12 L13

L19 L20

L14

a2 b2 c2 d2 e2 f2 g2

a3 b3 c3 d3 e3 f3 g3

L15 L16 L17 L18 b1 c1

A B C D E F G H I J

A B C D E F G H I J

1

2

3

4

5

6

7

8

1

2

3

4

5

6

7

8

195

3-7-7

Main PCB 195

P G

P G

CL REM

7 12 8 1 18 11

9 3 1410 4 15

R53

C25

R52 R31

R30

C10

R32

C1

C15 C14

2 VS

AV

SB A A B B

RS

AR

EF

AR

EF

BR

SB

CN

DA

CN

DB

TdATdB

AABB

13

R54

R1

R4

IC11

OUTIN

R58

TR2

IC10

IC10

IC7

IC7DT5

DT6

R10

7

R10

8

IC7

IC10

4 3

2 1

10 11

15 14

R57

R109

DT1

R105

R15

R110

H ALARM

DT4

C B

E

C BD3

D2

P96

P95

P94

P93

P92

P91

P90

P37

P36

P35

P34

P33

P32

P31

T00

P10

3P

102

P10

1P

100

AS

TB

P16

P17

AV

SS

AN

O0

P13

1A

VR

EF

R×D

T×D

AS

CK

VS

SP

20P

21P

22P

23P

24P

25P

26P

27A

0A

1

E

CB

14 15

11 10

6 7

3 IC4

IC4

IC4

IC4

2

3 2

5 6E

CB

E

DM REM

H REM

24 V

TFM REM

TC

TC IN

Flicker resistor REM*

MSW

24 V

MHPSW

LHPSW

DEVF IN

TC IN

FFM REM

HL CONT

MM 4

MM 3

MM 1

MM 2

PFCL

RCL

PHOTO REM

HV REM

DB REM

SEG a

IC16

IC16

IC16

IC16

IC16

IC167

6

5

4

3

2

1

12

13

14

15

16

17

18

IC16

SEG b

SEG c

SEG d

SEG e

SEG f

SEG g

OPFM REM

5 V

5 V

5 V

5 V

5 V

C5 C31G (5 V)

G (5 V)

G (5 V)

G (5 V)

24 V

CN1-1

CN1-2

CN7-2

CN3-1

CN3-2

CN11-9

CN9-5

CN9-4

CN9-3

CN9-2

CN9-1

CN11-4

CN11-1

CN11-2

CN11-3

CN11-5

CN10-2

CN7-1

CN2-15

CN6-1

CN2-16

CN7-5

CN7-9

CN7-8

CN12-5

CN4-1

CN4-3

CN4-2

CN4-5

CN4-4

CN7-12

CN8-2

CN6-8

CN6-7

CN8-1

CN7-11

CN7-13

CN7-4

S

S

S

S

IC132 3

R22

R26

R51

C B

E

R106 S

S

S

S

S

S

S

S

S

281

S G

24 V

R21

R27

6 7IC13

11 10IC13

IC109 8

IC1011 10

IC10

R40

A15 R92

R94A15

_RD

R72R73R74R75R76R77R78R79R97R96R93R95R80R98R99

A0 A1 A2 A3 A4 A5 A6 A7 A8 A9A10A11A12A13A14

2022109876543

252421232

2627

1112131516171819

R71R70R69R87R88R89R90R91

D0D1D2D3D4D5D6D7

_CE_OEA0A1A2A3A4A5A6A7A8A9A10A11A12A13A14

VccVpp

Q0Q1Q2Q3Q4Q5Q6Q7

IC5

INTP1

NON MOUNT

NON MOUNT

_OC

_OC

R20

R23

IC2

IC6

33

A15

_WR

15

2 CLK

103

11

R44

R45

R46ZD

1

13 12

+

–

+

–

D0D1D2D3D4D5D6D7

D1D2D3D4D5D6D7D8

Q1Q2Q3Q4Q5Q6Q7Q8

3478

13141718

256912151619

R12

R11

R10

R9

R8

R7

R6

6 7IC7

+

24 V

24 V

24 V

24 V

C24

IC13

R59

R60

R5

D5

8 11

9

10

IC16 IC16

C12

C11 C26

C9 C30C4

IC17

C29G (24 V)

G (24 V)

G (24 V)

G (24 V)

+S

S9

9, 16

COM

1, 8

8

8

4

IC9

S

S

4, 5, 12, 13

IC3, 4, 7, 13 IC14 IC5 IC2, 6, 10, 17

+

–

3

12

+

–

+

–

5

6

C34R

104

7IC14

R62

R55

R103

C33

R64

R63

R65

R49

R56

R102

R66

R100

C18

D4

C17

R48

R61

DIG 01

1234

8765

16IC9

IC8

C16

DIG 12 15IC9

DIG 23 14IC9

DIG 34 13IC9

DIG 45 12IC9

DIG 5

DIG 6

DEV SW

SHORT

DEVF

DEVF IN

6 11IC9

7 10

14 15

IC9

S

S

807978777675747372717069686766656463626160595857565554535251

123456789

101112131415161718192021222324252627282930

A15A14

A13A12A11A10A9A8D7D6D5D4D3D2D1D0A7A6A5A4A3A2A1A0

P66_WR_RDP63P62P61P60A15A14VSSA13A12A11A10A9A8

AD7AD6AD5AD4AD3AD2AD1AD0

A7A6A5A4A3A2

RTP0RTP1RTP2RTP3RTP4RTP5RTP6RTP7ICX2X1VDDXT2P07_RESETINTP0/P00INTP1/P01INTP2/P02INTP3/P03INTP4/P04INTP5/P05P06AVDDAVREF0AN10AN11AN12AN13AN14AN15

100

99 98 97 96 95 94 93 92 91 90 89 88 87 86 85 84 83 82 81

31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50

_WR_RD

WD

R25

R24

R83

R84

R47

R39C13R42 R41

H ALARM

TNS CONT

HV ALM

DM ALM

G (5 V)

ETTH

G (5 V)

HUMSENS

5 V

AES

TNS

FTH

FSW

RSW

KEY1

KEY0

DEV-UNIT

ZERO CROSS

HPSW

LM 4

LM 3

LM 1

LM 2

24 V

SM B

SM B

SM A

SM A

24 V

S

S

SS

D1

C20

C21C3 S

S

D6

S

S

S

S

S

S

S

IC14

C27

3

2

1

C22

+

–

+

–

+

–

+

IC5

IC5

IC5

8

9

14

7

6

1

5

4

2

C23

X1

1 3

2 H ALARM_RESET

INTP 1

R43

R68R67

R81

R35

R38

R33

R82

R34

R37

R86

R13R14

R85

R36

2 3IC3

7 6IC3

10 11IC3

15 14IC3

P G

P GP G

P G

65716

+ IC6

_OC

_RESET6 2

IC6

C8

IC1

R17 C7

R18ADJ2_RES2VCCADJ1

8765

1234

WDTC

_RES1GND

C6

R16

R19

WD

1 7

S

S

S

S G

S G

S G

S G

S GS G

S G S G

S G

S G

S G

S G

S

VCCNCTESTGND

CSSKDI

DOG

S G

S G

S G

S G

S G

S G S G

S G

S G S G

S G

S G S G

S GS G

S G S G S G

P G P G

CN2-8

CN2-9

CN2-10

CN2-11

CN2-12

CN2-13

CN2-14

CN6-2

CN6-4

CN6-3

CN6-5

CN5-1 CN5-4

CN7-3

CN2-1

CN2-2

CN2-3

CN2-4

CN2-5

CN2-6

CN2-7

CN13-1

CN13-2

CN10-1

CN12-1

CN12-7

CN10-3

CN12-2

CN12-8

CN5-3CN5-2

CN8-7

CN12-4

CN6-6

CN8-6

CN12-6

P G

S G

S G

S G

S G

S G

S G

S G

CN7-6

CN7-7

CN8-3

CN8-4

CN8-5

CN12-3

CN12-9

CN7-14

CN7-10

CN11-10

CN11-8

CN11-7

CN11-6

IC12

IC15C28

* For 230 V specifications and optional for 240 V specifications.

φ

φ

φ

φ

φ

φ

φ

φ

A B C D E F G H I J

A B C D E F G H I J

1

2

3

4

5

6

7

8

1

2

3

4

5

6

7

8

195

3-7-8

Connection diagram

120 V 910 W

240 V 1040 W

3 13 2 21

987123

11

11

6- 1

9- 1

10- 110- 2

ICFM

FFM

ICFM

24 VCL CL

24 VPFCL PFCL

24 VRCL RCL

G (5 V)

G (5 V)

G (

5 V

)

G (

5 V

)

G (

5 V

)

G (

24 V

)

G (

5 V

)G

(24

V)

5 V

5 V

5 V

RSW RSW

ESW

ESW

FTH FTHN. C

5 V

SM

B

FF

M R

EM

LM

2

LM

4M

M

2M

M

1M

M

3

MM

4

LM

1LM

3

DM

RE

MD

M A

LMH

RE

M

ES

WF

TH

RC

LP

FC

LR

SW

CL

RE

M5

V

5 V

24 V

24 V

BL

SE

G a

BL

SE

G b

BL

SE

G c

BL

SE

G d

BL

SE

G e

BL

DIG

5B

L D

IG 6

24 V

GN

D (

24 V

)24

VD

M R

EM

DM

ALM

Flic

ker

RE

MZ

ER

O C

RO

SS

HL

CO

NT

SM

BS

M A

SM

A24

V

5 V

5 V

AE

S24

VM

HP

SW

HP

SW

HPSWLHPSWAESMHPSW

LHP

SW

24 V

FFM24 V

14- 114- 2

TH3

HL

H

TH2 TH1

9- 2

2

11

2

654321456789

3

1

1

3

1

1

2

2

23

12

2

1 12 2

3213 2 1

11- 211- 3

4-1

3 4

-12

4-1

1 4

-10

4-

8 4

- 7

4-

6 4

- 5

5- 2 5- 3

7- 2 7- 1

6- 2

5- 1

4-1

4

4-

3 4

- 4

10-

3

10-

110

- 2

12-

712

- 8

12-

9

12-

6

4-

9 13- 3

11- 1

13- 113- 2

1234

12-

3

12-

1

12-

412

- 5

9-

4 9

- 5

9-

2 9

- 1

9-

313

- 2

13-

1

7-

1 7

- 2

7-

3 7

- 4

7-

5 7

- 6

7-

8 7

- 9

7-1

0 7

-11

7-1

2

12-

2

331

5

7-

7

1

HV

24 V

FB

TFM

OPFM

HUMPCB

TFM

DB

MC

TC

1-

6 1

- 5

1-

4 1

- 3

1-

2 1

- 1

1-

7H

V A

LMP

HO

TO

RE

MH

V R

EM

DB

RE

MG

(24

V)

24 V

DE

V.U

NIT

DE

V.U

NIT

DE

V S

W

DE

V S

W

DE

VF

SH

OR

T24

V

TN

ST

NS

CO

NT

G (

24 V

)

24 V

24 V

MS

W

TC

24 V

5 V

G (

5 V

)H

UM

SE

NS

G (

5 V

)E

TT

H

OP

FM

RE

M

TF

M R

EM

2- 12- 2

HVTPCB

TNS

TC

DEVFfor 120 V, 220 V and240 V specifications Dev.bias

TB

2

FU

SE

TB

1

TB 9

TB

8T

B7

TB

6

TB

5

1-3

1-4

1-2

1-1

2

4-

2 4

- 1

8-

1 8

- 2

8-

3 8

- 4

135 23

1-81-61-4

1

54321

454

1-2

12-412-312-212-1

5 V

G (5 V)G (24 V)24 V

1- 2

1- 1

Flicker resistor(for 230 V specifications and optional for 240 V specifications)

3- 1

3- 4

2- 1

2- 3

HL

LIV

E

HL

CO

M H LIVE

H COM

1-7

1-5

1-3

1-1

TB1

120 VFUSE250 V/15 A

120 VFUSE250 V/15 A

FUSE250 V/8 A220 - 240 V

220 - 240 VFUSE250 V/8 A

MS

W

SSW

DHBA

21

TB

4

120 V220 - 240 V

TB

3

11-

911

-10

11-

8

7-1

3 7

-14

NEUTRAL

LIVE

CORE(for 220 - 240 V specifications only)

optional for120 V specifications

TB2

11-

5

11-

211

- 1

11-

3

5-

3

5-

1 5

- 2

12345

5-

4

3- 2

3- 1

6- 4

6- 3

6- 6

6- 5

6- 8

6- 7

8- 6

8- 7

8- 4

8- 5

8- 2

8- 1

4- 1

4- 2

4- 3

4- 4

4- 5

8- 3

6- 1

6- 2

6- 1

6- 2

1- 2

1- 1

11-

711

- 6

11-

4

3 10

43214321

321

321

321

3

1342

9874 5 6 12111 21 2

BA

2-162-15

1-16SEG a

SEG b

SEG c

SEG d

SEG e

SEG f

SEG g

DIG 0

DIG 1

DIG 2

DIG 3

DIG 4

DIG 5

DIG 6

KEY 0

KEY 1

1-151-141-131-121-111-10

1- 81- 71- 61- 51- 41- 31- 21- 1

1- 9

2-142-132-122-112-102- 92- 8

2- 62- 52- 42- 32- 22- 1

2- 1

2- 7

2- 7

2- 6

2- 5

2- 4

2- 3

2- 2

NF

PSPCB

MPCB

AVRPCB

SM

DM

LMBL

OPCB

MM

TB10

TC

DS

W

321

321

321

TC

DS

W

321

321

321

TC

DS

W

φ φφ φ φ φ φφ

2

1

1

2

195-1

A B C D E F G H I J

A B C D E F G H I J

1

2

3

4

5

6

7

8

1

2

3

4

5

6

7

8

195

3-7-9

Wiring diagram

120

V

220

- 24

0 V

INLE

T

HUMPCB

GY

C11

-6G

Y C

11-7

GY

C11

-8G

Y C

11-9

GY

C11

-10

MM

5 VG (5 V)HUMSENSG (5 V)ETTH

54321

RD P1-5GN P1-6

C17

C30

C1

(CN

1)

24 VMSW

12

2 1 3 24 V

4

5 4 3 2 1

SEG aSEG bSEG cSEG dSEG eSEG fSEG gDIG 0DIG 1DIG 2DIG 3DIG 4DIG 5DIG 6KEY 0KEY 1

GY C14-16GY C14-15GY C14-14GY C14-13GY C14-12GY C14-11GY C14-10GY C14-9GY C14-8GY C14-7GY C14-6GY C14-5GY C14-4GY C14-3GY C14-2GY C14-1

C2

(CN

2)

123456789

10111213141516

TC

C3

(CN

3) BKBK24 V

TC12

OE

C25

-3G

N C

25-2

BE

C25

-1

LM

2LM

1

LM

324

VLM

4

MM

2

MM

1

MM

3

24 V

MM

4

1 2 3 4 5 6 7 8 9

GY

C28

-9G

Y C

28-8

GY

C28

-7G

Y C

28-6

GY

C28

-5G

Y C

28-4

GY

C28

-3G

Y C

28-2

GY

C28

-1

GY

C26

-5G

Y C

26-4

GY

C26

-3G

Y C

26-2

GY

C26

-1G

Y C

30-5

GY

C30

-4G

Y C

30-3

GY

C30

-2G

Y C

30-1

1 2 3 4 5 6 7 8 9 101 2 3

OPFM

52 1

6 C26C27

12345

SM BSM BSM ASM A24 V

1 2

32

RD

RD

C54

C12 (CN12)C11 (CN11)

C10 (CN10)

5 V

HP

SW

G (

5 V

)

MPCB

YWBERDBNWE

1

C9

(CN

9)

RD

C18

-1B

E C

18-3

BE

C18

-5O

E C

18-7

GY

C17

-5G

Y C

17-4

GY

C17

-3G

Y C

17-2

GY

C17

-1

GY

C54

-1G

Y C

20-2

,3P

E C

20-6

PE

C20

-7R

D C

20-8

BE

C20

-9P

K C

20-1

0G

N C

20-1

1

C6 (CN6)

C5 (CN5) C4 (CN4)

1 2 3 4 5 6 7 8 1 2 3 4 1 2 3 4 5

DE

V. U

NIT

DE

V S

WD

EV

FS

HO

RT

24 V

G (

24 V

)T

NS

TN

S C

ON

T

24 V

G (

24 V

)G

(5

V)

5 V

5 V

G (

5 V

)H

UM

SE

NS

G (

5 V

)E

TT

H

TFM REMHV ALMPHOTO REMHV REMDB REMG (24 V)24 V

C13 (CN13)

C8

(CN

8)

1234567

ZERO CROSSFlicker REM5 VCL REMRSWPFCLRCLFTHESWHL CONTH REMDM ALMDM REMFFM

GY C22-14GY C22-13GY C22-12GY C22-11GY C22-10GY C22-9GY C22-8GY C22-7GY C22-6GY C22-5GY C22-4GY C22-3GY C22-2GY C22-1

GY C23-7GY C23-6GY C23-5GY C23-4GY C23-3GY C23-2GY C23-1

123456789

1011121314

C7

(CN

7)

BK P1-2

BK P1-1

WE

BK

BK P2BK P3

MSW

LIVELIVE

24 VMSW

12456

P1

Wire colorBLACKBROWNYELLOWGREENBLUE

WHITEPINKRED

ORANGELIGHT BLUE

PURPLEGRAY

GREEN/YELLOWRED/WHITE

BKBNYWGNBEWEPKRDOELBPEGY

GN/YWRD/WE

Symbol

TB1TB

10

P5

P4

P2

24 V

24 V

G (

24 V

)G

(24

V)

G (

5 V

)G

(5

V)

5 V

5 V

1 2 3 4 5 6 7 8

BK

C35

-1

P12P11

RD

C5-

1R

D C

45-1

BE

C5-

2B

E C

45-2

BE

C5-

3B

E C

45-3

OE

C5-

4O

E C

45-4

TB

9

CO

M

C18 (CN1)

WE

C35

-3W

E C

56-2

BK

C56

-1

LIV

E

COM

LIVE

LIVE

LIVE

TB4

TB3

TB2

ICFM

C56

BK P12BK P11

RD C53-1BK C53-2

GY C55-2GY C55-3

GY C6-1GY C20-11

23

BK

BK

40 W

10

Ω

40 W

10

Ω

*1 For 220 V/60 Hz and 230 V specifications.*2 For 120 V, 220 V/50 Hz, 220 V/60 Hz and 240 V specifications.*3 For 120 V, 220 V and 240 V specifications.

CO

RE

(for

220

- 2

40 V

spe

cific

atio

ns o

nly)

40 W

10

ΩFU

SE

TB

8

TB

7

PSPCB

CO

M

CO

M

P8

P7

P6

LIV

E

LIV

E

P9

TB

6

TB

5

P101A1B2A2B

1234

BK P6BK P8WE P7WE P9

SSW

GY

C12

-9G

Y C

12-8

GY

C12

-7G

Y C

12-6

GY

C12

-5G

Y C

12-4

GY

C12

-3G

Y C

12-2

GY

C12

-1

C29C28

GY

C11

-5G

Y C

11-4

GY

C11

-3G

Y C

11-2

GY

C11

-1

56789654321

345612344321987

TFMX1

C23 (CN1)

C24 (CN2)

TFM REMHV ALMPHOTO REMHV REMDB REMG (24 V)24 VHVTPCB

24 VTFM

P16

P15

GY C29-3GY C29-2GY C29-1

7654321

12

21C46

BK

C36

-1W

E C

36-2

C22 (CN4)

WE

C49

-1

WE

C46

-2

TB

1

1413121110987654321

ZERO CROSSFlicker REM5 VCL REMRSWPFCLRCLFTHESWHL CONTH REMDM ALMDM REMFFM

3 2 1

MH

PS

W

WE

P11

BK

P12

C32MHPSWG (5 V)5 V

1 2 3

BK

C46

-1

123

12

24 VICFM

RDBK

C53 (CN14)

YW C9-1BE C9-2RD C9-3BN C9-4WE C9-5

P13

C45 (CN12)

C39 (CN6)C38 (CN5)

C36 (CN2)C35 (CN1)

RD

RD P17RD

BK

C43

-2R

D C

43-1

BE

C40

-2B

E C

40-1

BE

C39

-2B

E C

39-1

YW C20-12

PFCLRCLFFM

DMO

E C

10-1

GN

C10

-2B

E C

10-3

3 2 1

C25

C16

SM

HPSW

GY

C41

-4G

Y C

41-3

GY

C41

-2G

Y C

41-1

1 2 3 4

5 V

HP

SW

G (

5 V

)

WE

C50

-1T

B2

GN C19-2OE C19-1

BK

BK

123

FTH5 V

1 2 3 4

GY C51-2GY C51-1

C37 (CN3)

GY C16-4GY C16-3GY C16-2GY C16-1

OE C47-1BE C47-2GN C47-3

RDBK

P14

24 VCL

24 VFFM

G (24 V)24 VDM REMDM ALM

1234

12

5 VG (5 V)ESW

123

12

C44

(C

N11

)C

43 (

CN

10)

C42

(C

N9)

C40 (CN7)

RD C29-4GN C29-5BE C29-6

C21TCDSW

BK

321

BK

C37

-4

1211

BK

C46

-1T

H3

HL D

EV

SW

DE

V S

WG

Y C

54-1

GY

C54

-24

OE

YW

BE

RE

C18

-2B

E C

18-4

BE

C18

-6O

E C

18-8

1 2 3 4

C33123

BE

BE

1 2 1 2 3

24 VAESG (24 V)A

ES

RD

BE

PK

GN

RD

BE

PK

GN

YW

DE

V. U

NIT

DE

V S

W

GY

GY

*1 *2

DEVF*3

5432131

GY

GY

9876

DE

V. U

NIT

DE

V S

W

DE

VF

SH

OR

T24

VG

(24

V)

TN

ST

NS

CO

NT

DB

TNS

21

C14 (CN1)

LHPSWG (5 V)5 V

DEVELOPING UNIT

Dev. bias

C34

GY

C2-

16G

Y C

2-15

GY

C2-

14G

Y C

2-13

GY

C2-

12G

Y C

2-11

GY

C2-

10G

Y C

2-9

GY

C2-

8G

Y C

2-7

GY

C2-

6G

Y C

2-5

GY

C2-

4G

Y C

2-3

GY

C2-

2G

Y C

2-1

LHP

SW

123

KE

Y 1

KE

Y 0

DIG

6D

IG 5

DIG

4D

IG 3

DIG

2D

IG 1

DIG

0S

EG

gS

EG

fS

EG

eS

EG

dS

EG

cS

EG

bS

EG

a

BE

BE

1 2

BK

BK

21

CLEANING UNITTC

RS

W

BL

2 1FB

MC

GY

C42

-1G

Y C

42-2

RD

P16

RD

P15

RD

P15

P17C52C51

3 1211C49C19

FT

H

TH

2

1 2 3

5 V

G (

5 V

)E

SW

WE

WE

BK

BK

C50

C15 (CN2)

BL

SE

G a

BL

SE

G b

BL

SE

G c

BL

SE

G d

BL

SE

G e

BL

DIG

5B

L D

IG 6

WE

WE

WE

WE

WE

WE

WE

5 4 3 2 1

ES

W

FIXING UNIT

WE

H

BK

P10

-1

BK

P10

-2

WE

P10

-3

WE

P10

-4

BK

C37

-1

GY

C34

-1G

Y C

34-2

GY

C34

-3B

E C

33-3

GN

C33

-2R

D C

33-1

GY

C32

-1G

Y C

32-2

GY

C32

-3

GY

C31

-1G

Y C

31-2

GY

C31

-3G

Y C

31-4

GY

C31

-5

DM

ALM

DM

RE

M24

VG

(24

V)

H L

IVE

AC

LIV

E IN

AC

CO

M IN

HL

CO

M

HL

LIV

E

BK

C46

-2

C20

C55

C46

(C

N13

)

LIV

E

CO

M

PE

C6-

3P

E C

6-4

RD

C6-

5B

E C

6-6

PK

C6-

7G

N C

6-8

YW

X1

GY

C6-

1G

Y C

6-2

GY

C6-

2

GY

C6-

1

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

GN

C46

-1O

E C

46-2

WE

P14

WE

P13

BK

GN

GY C4-1GY C4-2GY C4-3GY C4-4GY C4-5

1 2 3 4 5 6 7

GY C8-1GY C8-2GY C8-3GY C8-4GY C8-5GY C8-6GY C8-7

GY C7-1GY C7-2GY C7-3GY C7-4GY C7-5GY C7-6GY C7-7GY C7-8GY C7-9GY C7-10GY C7-11GY C7-12GY C7-13GY C7-14

10

GY C29-9GY C29-8GY C29-7

3

P3 RD C1-1GN C1-2

24 V

OP

FM

RE

M

5 V

G (

5 V

)M

HP

SW

24 V

AE

SG

(24

V)

5 V

G (

5 V

)LH

PS

W

CLC

48

TH

1

GY

C27

-2G

Y C

27-3

GY

C27

-4G

Y C

27-5

GY

C27

-6

OPCB

LM

H C

OM

DB

FB

AVRPCB

HV

12

BE

C56

-1B

E C

56-2

24 V

PF

CL

24 V

RC

L

C41

(C

N8)

5 V

RS

WG

(5

V)

24 V

G (

24 V

)G

(5

V)

5 V

Flicker resistorfor 230 V specificationsand optional for 240 Vspecifications

LM

2LM

1

LM

324

VLM

4

Opt

iona

l for

120

Vsp

ecifi

catio

ns

DH

φ φ φ φ φ φ φ φ

φ φ φ φ

φ φ φ φ

C47

OE

BE

GN

OE

C44

-1B

E C

44-2

GN

C44

-3

1 32

©1997 MITA INDUSTRIAL CO., LTD.MITA and are registered trademarks of MITA INDUSTRIAL CO., LTD.

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