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In the interests of user-safety (Required by safety regula-tions in some countries) the set should be restored to itsoriginal condition and only parts identical to those specifiedbe used.

S53B2VL-Z1U//

LIQUID CRYSTAL DISPLAY CAMCORDER NTSC

SERVICE MANUAL

CONTENTS

This document has been published to be used forafter sales service only.The contents are subject to change without notice.SHARP CORPORATION

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Page 1. IMPORTANT SERVICE NOTES ........................................................................................................ 22. SPECIFICATIONS .............................................................................................................................. 63. PART NAMES .................................................................................................................................... 74. DISASSEMBLY OF THE SET ............................................................................................................ 85. MECHANISM ADJUSTMENT JIGS AND PARTS ............................................................................ 12 6. INSPECTION AND MAINTENANCE

ITEMS AND INTERVALS ................................................................................................................. 137. ADJUSTING AND CHECKING OF MECHANISM ........................................................................... 148. ADJUSTMENT OF RUNNING SYSTEM .......................................................................................... 179. ASSEMBLING OF MECHANISM SECTION AND PART REPLACEMENT

(DISASSEMBLING AND ASSEMBLING) ........................................................................................... 1910.METHOD OF ADJUSTING THE ELECTRIC CIRCUIT .................................................................... 2911.USEFUL TIPS ................................................................................................................................... 4712.SIGNAL FLOW DIAGRAMS ............................................................................................................. 4813.BLOCK DIAGRAMS ......................................................................................................................... 5114.SCHEMATIC DIAGRAMS ................................................................................................................ 5815.SEMICONDUCTOR LEAD IDENTIFICATION ............................................................................... 12216.PRINTED WIRING BOARD ASSEMBLIES .................................................................................... 12417.REPLACEMENT PARTS LIST ....................................................................................................... 14118.PACKING OF THE SET ................................................................................................................. 161

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1. IMPORTANT SERVICE NOTES

1. NOTES DE SERVICE IMPORTANTES

BEFORE RETURNING THE VIDEO CAMERARECORDER

Before returning the video camera recorder to the user,perform the following safety checks.

1. Inspect all lead dress to make certain that leads arenot pinched or that hardware is not lodged betweenthe chassis and other metal parts in the video camerarecorder.

2. Inspect all protective devices such as non-metalliccontrol knobs, insulating materials, cabinet backs,adjustment and compartment covers or shields, isola-tion resistor/capacitor networks, mechanical insula-tors etc.

3. To be sure that no shock hazard exists, check forleakage current in the following manner.

Plug the AC line cord directly into a 120 volt AC outlet(Do not use an isolation transformer for this test).

Using two clip leads, connect a l.5k ohm, 10 watt resistorparalleled by a 0.15F capacitor in series with allexposed metal cabinet parts and a known ground,such as a water pipe or conduit.

Use an AC voltmeter having with 5000 ohm per volt,or higher, sensitivity to measure the AC voltage dropacross the resistor (See Diagram).

Move the resistor connection to all exposed metalparts having a return path to the chassis (antenna

connections, metal cabinet, screw heads, knobs andcontrol shafts, etc.) and measure the AC voltage dropacross the resistor. Reverse the AC plug (a nonpolarized adaptor plug must be used but only for thepurpose of completing these checks) on the set andrepeat the AC voltage measurements for each ex-posed metallic part. Any reading of 0.45V rms (thiscorresponds to 0.3mA rms AC.) or more is excessiveand indicates a potential shock hazard which must becorrected before returning the video camera recorderto the user.

ACVOLTMETER

1.5k ohms10W

CONNECT TOKNOWN EARTHGROUND

TO EXPOSEDMETAL PARTS

0.15 FTEST PROBE

AVANT DE RENDRE LE MAGNETOSCOPE

Avant de rendre le magntoscope lutilisateur, effectuerles vrifications de scurit suivantes.

1. Vrifier toutes les gaines de fil pour tre sr que les filsne sont pas pincs ou que le matriel nest pas coincentre le chssis et les autres pices mtalliques dans lemagntoscope.

2. Vrifier tous les dispositifs de protection tels que lesboutons de commande non mtalliques, les matriauxdisolement, le dos du coffret, les couvercles decompartiment et ajustement ou les boucliers, lesrseaux de rsistance / condensateur disolement,Ies isolateurs mcaniques, etc.

3. Pour tre sr quil ny a aucun risque de choc lectrique,vrifier le courant de fuite de la manire suivante.

Brancher le cordon dalimentation secteur directementdans une prise de courant de 120 volts. (Ne pasutiliser de transformateur disolement pour cet essai).

Utiliser deux fils pinces et connecter une rsistancede 10 watts 1,5 kohm en parall le avec uncondensateur de 0,15 F en srie avec des pices ducoffret mtallique exposes et une masse de terreconnue telle quun tuyau ou un conduit deau.

Utiliser un voltmtre CA dune sensibilit dau moins5000/V mesurer la chute de tension en travers de larsistance (voir diagramme).

Dposer la connexion de la rsistance toutes lespices mtalliques exposes ayant un parcours de

retour au chssis (connexions dantenne, coffretmtallique, ttes de vis, boutons et arbres de commande,etc.) et mesurer la chute de tension CA entre la rsistance.Inverser la fiche CA (une fiche intermdiaire non polarisedoit tre utilise seule fin de faire ces vrifications.) surlappareil et rpter les mesures de tension CA pourchaque pice mtallique expose. Toute lecture de0,45 V rms (ceci correspond 0,3 mA rms CA) ou plusest excessive et signale un danger de choc qui doit trecorrig avant de rendre le magntoscope sonutilisateur.

0.15 FSONDE D'ESSAI

VERS PIECESMETALLIQUESEXPOSEES

Voltmtre CA

1.5KOHMS10W

CONNECTER AUNE MASSE DETERRE CONNUE

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WARNING :TO REDUCE THE RISK OF FIRE OR ELECTRIC SHOCK, DO NOT EXPOSETHIS APPLIANCE TO WET LOCATIONS.

CAUTION: TO REDUCE THE RISK OF ELECTRICSHOCK. DO NOT REMOVE COVER. NOUSERSERVICEABLE PARTS INSIDE.REFER SERVICING TO QUALIFIED SERVICEPERSONNEL.

CAUTIONRISK OF ELECTRIC SHOCK

DO NOT OPEN

ATTENTION:POUR REDUIRE LES RESQUES D'INCENDIE OU DE CHOC ELECTRIQUE,NE PAS EXPOSER CET APPAREIL A LA PLUIE OU A L'HUMIDITE.

ATTENTION: AFIN DE REDUIRE LES RISQUES DECHOC ELECTRIQUE, NE PAS RETIRER LECOUVERCLE, AUCUN ORGANE INTERNENE PEUT ETRE REPARE PARL'UTIUSATEUR, CONFIER L'APPAREIL AUN DEPANNEUR QUALIFIE.

ATTENTION

This symbol alerts the user that there areimportant operating and maintenance instruc-tions in the literature accompanying this unit.

This symbol warns the user of uninsulatedvoltage within the unit that can cause danger-ous electric shocks.

Ce symbole signale l'utilisateur la prsenced'une tension non isole l'intrieur de l'appareilqui peut tre la cause de secousses lectriquesdangereuses.

Ce symbole avertit l'utilisateur que des in-structions importantes relatives l'utilisationet l'entretien se trouvent dans le manuelaccompagnant l'appareil.

RISQUE DE CHOC ELECTRIQUENE PAS OUVRIR Camcorder

seulement

Camcorderonly

ATTENTIONCe symbole signifie que l'on devra uti-liser un fusible de mme type (CP1;0,75A 24V, CP2; 1,25A 24V, CP3; 1,25A24V) pour assurer la scurit.

CAUTIONThis symbol mark means following.For continued protection against fire haz-ard, replace only with same type fuse.(CP1; 0.75A 24V, CP2; 1.25A 24V, CP3;1.25A 24V)

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The RBRCTM Seal SHARP participates in the RBRCTM* Nickel-Cadmium Battery Recycling Program in the UnitedStates. The RBRCTM Seal on our battery pack contained in our product indicates that SHARP isvoluntarily participating in an industry program to collect and recycle these batteries. The RBRCTMprogram provides you with a convenient alternative to placing spent Nickel-Cadmium battery packs intothe trash or municipal waste stream, which is illegal in some areas. At the end of their useful life, theNickel-Cadmium battery can be dropped off at the nearest collection center for recycling. For informationon the nearest collection center, call 1-800-8-BATTERY or your local recycling center. If you are locatedoutside the United States, contact your local authorities for information concerning proper disposal and/or recycling of this battery. SHARPs involvement in this program is part of our commitment to protectingour environment and conserving natural resources. [Footnote] *RBRCTM is trademark of the Rechargeable Battery Recycling Corporation.

The following program is available in the United States. Please consult local environmental authorities concerning the availability of this or other programs in your area.

CAUTIONBEFORE BATTERY DESTROY

NICKEL-CADMIUM BATTERY

NICKEL-METAL HYDRIDE BATTERY

SEALED LEAD BATTERYLITHIUM or LITHIUM-ION BATTERY

Battery disposalThis product contains NICKEL-METAL hydride (LITHIUM-ION) battery.This battery must disposed of properly.Remove the battery from the product and contact your local environmental agencies for informationonrecycling and disposal options.

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PRECAUTIONS FOR USING LEAD-FREE SOLDER

1) Employing lead-free solder"Main PWB", "CCD PWB", "Sub PWB", "LCD PWB", "Head amp PWB", "Lithium PWB", "Operation PWB", "VCROperation PWB", "Zoom SW PWB", "Mecha Reversion detection PWB", of this model employs lead-free solder. TheLF symbol indicates lead-free solder, and is attached on the PWBs and service manuals. The alphabetical characterfollowing LF shows the type of lead-free solder.

Example:

Indicates lead-free solder of tin, silver and copper

2) Using lead-free solderWhen fixing the PWB soldered with the lead-free solder, apply lead-free wire solder. Repairing with conventional leadwire solder may cause damage or accident due to cracks.As the melting point of lead-free solder (Sn-Ag-Cu) is higher than the lead wire solder by 40C, we recommend you touse a dedicated soldering bit. If you are not familiar with how to obtain lead-free solder or soldering bit, contact ourservice station or service ranch in your area.

3) SolderingAs the melting point of lead-free solder (Sn-Ag-Cu) is 220C which is higher than the conventional lead solder by 40C,and as it has poor solderability, you may be apt to keep the soldering bit in contact with the PWB for extended periodof time. However, since the land may be peeled off or the maximum heat-resistance temperature of parts may beexceeded, remove the bit from the PWB as soon as you confirm the steady soldering condition.Lead-free solder contains more tin, and the end of the soldering bit may be easily corroded. Make sure to turn on andoff the power of the bit as required.If a different type of solder stays on the tip of the soldering bit, it is alloyed with lead-free solder. Clean the bit after everyuse of it.When the tip of the soldering bit is blackened during use, file it with steel wool or fine sandpaper.

Lead-free wire solder for servicingPart No. Description Price Code

ZHNDAi123250E J 0.3mm 250g(1roll) BLZHNDAi126500E J 0.6mm 500g(1roll) BKZHNDAi12801KE J 1.0mm 1kg(1roll) BM

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2. SPECIFICATIONSSignal System: NTSC standard

Recording System: 2 rotary heads, helical scanning systemCassette: Digital VCR Mini DV video cassette

Recording/Playback Time: 90 minutes (DVM60, LP mode)Tape Speed: SP mode: 18.812 mm/second

LP mode: 12.555 mm/secondPickup Device: 1/4" (6.4 mm, effective size: 4.5 mm) CCD image sensor

(with approx. 680,000 pixels including optical black,effective pixels: approx. 340,000 pixels)

Lens: 10 optical zoom lens (F1.8, f=3.8-38.0 mm)Lens Filter Diameter: 30 mm

Monitor: 2.5" (6.4 cm) CGSiliconBuilt-in Microphone: Electret monaural microphone

Color Temperature Compensation: Auto white balance with white balance lockMinimum Illumination: 2 lux (9 lux measured by EIA standard)(with gain-up, F1.8)

Power Requirement: DC 7.4 VPower Consumption: 3.6 W (during camera recording in Camera mode using the viewfinder in Full Auto

mode with the DIS function on)4.2 W (during camera recording in Camera mode using the LCD monitor in FullAuto mode with the DIS function on and backlight in normal mode)

Operating Temperature: 32F to 104F (0C to +40C)Operating Humidity: 30% to 80%

Storage Temperature: 4F to 140F (20C to +60C)Dimensions (approx.): 3 1/4" (W) 3 15/64" (H) 4 " (D)

[82.8 mm (W) 82.2mm (H) 101.5 mm (D)]Weight (approx.): 1.05lbs (475 g)

(without battery pack, lithium battery, video cassette and lens cap)

AC Adapter (UADP-0339TAZZ)Power Requirement: AC 110-240 V, 50/60 Hz

DC Output: 10 VDimensions (approx.): 1 31/32" (W) 1 1/16" (H) 2 19/32" (D)

[50.0mm (W) 27.0mm (H) 65.5 mm (D)]Weight (approx.): 0.22 lbs (100 g)

SERVICE INFORMATION (For the U.S.)For the location of the nearest Sharp Authorized Service, or to obtain product literature, accessories,supplies or customer assistance, please call 1-800-BE SHARP (1-800-237-4277) or visit SHARP'swebsite (http://www.sharpusa.com)

Specifications are subject to change without notice.

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3. PART NAMES

Zoom lens

DISPLAY button

Operation button

Monaural microphone LCD LAMP button

Front view

Lithium battery cover

Tripod socket*

Diopter adjustment dial

Battery release

* When attaching a tripodwith a guide pin, do notattach the pin to the bottomof the camcorder.

LCD monitor

DV terminal

DC IN jack

AV terminalTerminal cover

Left view

Viewfinder

Power Zoom Wide angle/Telephoto control /VOLume control PHOTO button

STANDBY button

STANDBY indicator

POWER/CHARGE(RED) indicator

DC IN jack cover

Cassette holder

Cassette compartmentdoor release

Cassette compartment door

Right view

Hand strap

Speaker

Window cleaning cover

Start/Stop button

Power switch ( CameraRecording mode/ Playbackmode select switch)

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4. DISASSEMBLY OF THE SET4-1. Procedure for disassembling the cabinetNote:Before removing the cabinet, turn OFF the power and make sure that the battery is not connected.1. Remove the lens hood and remove the screw ((s) XiPSF14P06000). Open the LCD panel 90 degrees and remove the two screws ((x)LX-

HZ0050TAFN). Remove the two screws ((c)XiPSN17P04000) and remove the KS

camera front cover by pulling it frontward.

2. Disconnect the connector of the KS camera front cover. Disconnect the two LCD tilt FPCs of the liquid crystal panel. Remove the two screws ((r) XiPSN20P08000) and remove the LCD

panel. Remove the screw ((p) LX-HZ0063TAFN) and screw ((q)

XiPSN17P06000) that hold the camera L cabinet, open the terminalcover and remove the three screws ((b) XiPSN17P03000).

3. Disconnect the operation FPC and remove the camera L cabinet. Remove the screw ((c) XiPSN17P04000) and remove the KS

camera bottom cover. Remove the two screws ((a) XiPSN17P02000) and remove the LCD

tilt reinforcing fitting.

r

r

p

b

b

b

q

Camera L cabinet

Connector

LCD tilt FPC

KS camera front cover

Terminal cover

LCD panel

c

a

aKS camera bottom cover

Camera L cabinet

LCD tilt reinforcing fitting

Operation FPC

s

c

c

x

x

LCD panel

KS camera front cover

Lens hood

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6.

7.

4.

b a

p

b

x

Camera unit

Camera top cover

Connector

VF

FPC(3)

FPC(2)FPC(1)

Remove the screw ((x) LX-HZ0050TAFN), screw ((p) LX-HZ0063TAFN) and screw ((a) XiPSN17P02000), disconnectthe FPC (1) and remove the camera top cover.

Remove the screw ((b) XiPSN17P03000) from the cameraunit, disconnect the FPC (2) and remove the camera unit.

Remove the screw ((b) XiPSN17P03000), disconnect theconnector and FPC (3) and remove the VF.

5.

Disconnect the two connectors of the sub PWB unit and mainPWB unit.

Remove the two screws ((b) XiPSN17P03000) from theradiating angle, remove the screw ((b) XiPSN17P03000)from the PWB unit and remove each unit.

Disconnect the two FFCs of the main PWB unit. Remove the two screws ((x) LX-HZ0050TAFN), remove the

screw ((x) LX-HZ0050TAFN) from the PWB mounting angleand remove the terminal cabinet.

Remove the screw ((b) XiPSN17P03000) and remove theMechanism reversion detection PWB unit.

Remove the three screws ((u) LX-BZ0221TAFC) and removethe PWB mounting angle.

Turn the LCD tilt unit assembly 90 degrees. Remove the three screws ((b) XiPSN17P03000). Remove the screw ((a) XiPSN17P02000).

LCD tilt unit assembly

b

b

ba

b

u

u u

Mechanism reversion detection PWB unit

PWB mounting angle

x

b

b

b

x

Main PWB unit

Terminal cabinet

Radiating angle

Sub PWB unit

Tilt FPCConnector

PWB mounting angle

x

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4-2. Procedure for disassembling the cabinet

1. Remove the three screws ((e) XiPSF17P03000) , remove the screw

((d) XiPSF17P02000) and remove the VCR bottom cover.

2. Remove the two screws ((e) XiPSF17P03000) and remove the tilt

cover. Remove the VCR front cover with the cassette cover opened. Disconnect the connector and two tilt FPCs, remove the three screws

((h) LX-BZ0220TAFC) and remove the KS camera tilt.

3. Remove the screw ((f) XiPSF17P04000) with the cassette lid opened,

disconnect the operation PWB FFC and remove the KS VCR operatingcover.

e

VCR bottom cover e

e

d

h

hh

Tilt cover

VCR front cover

Connector

Tilt FPC

e

e

KS camera unit

f

KS VCR operating cover

Operating PWB FFC

The internal lug may be damaged

If the VCR front cover is removed only by turning it in the direction indicated

1. Remove the two couplings and turn the VCR front cover about 20 degrees in the direction indicated by (1).2. Turn the VCR front while sliding it in the direction indicated by (2) to disengage the internal lug.* If the VCR front cover is removed by turning it forcedly in the direction indicated by (1), the internal lug may be damaged.

How to remove the VCR front cover

1

2

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4. Disconnect the six FPCs of the head amp circuit board

unit. Remove the two screws ((a) XiPSN17P02000) and

remove the head amp PWB unit. Remove the three screws ((w) LX-BZA022WJFN) and

remove the screw ((k) LX-BZA023WJFD). Remove the mechanism with the cassette lid opened.

5. Remove the screw ((x) LX-HZ0050TAFN). Remove the two screws ((d) XiPSF17P02000) and remove the cassette

lid.

6. Remove the two screws ((d) XiPSF17P02000). Disconnect the connector of the speaker while removing the KS upper

lid cover with the cassette control lid opened. Remove the screw ((d) XiPSF17P02000) and remove the lock support

cover. Remove the speaker.

x

Cassette lid

d

d

d

d

d

Connector

Speaker

Lock support cover

KS upper lid cover

k

a

a

w

w

w

Mechanism

Head amp PWB unit

FPC

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5. MECHANISM ADJUSTING JIGS AND PARTS5-1. Mechanism checking and adjusting jigs

1. Cassette torque meter for PB2. 9DASD-10153. DB* 1mNm/1.5mNm

1. Torque gauge2. JiGTG00453. CN* For measurement of VS-

REW winding torque

1. Torque gauge head2. 9EQTGH-DH50003. BW* For torque gauge shown left

1. Dial tension gauge2. 9DAPTG-10-10W3. CA* PTG-10

1. Tension gauge 4N2. JiGSG04003. BK* For measurement of

pinch roller press force

1. Master plane2. 9EQMP-VLPD13. CL* For checking of height of reel table

1. Height adjustment jig2. 9DAHG-PD13. BZ* For height adjustment

1. Alignment tape (II)2. VR3-GTZQS3. CG* For adjustment of SW point(Color bar signal)* 90ADVC-TAPE available

1. Torque driver 150mNm2. JiGTD1500RTDH3. CB

5-2. Parts for periodic inspection and maintenance1. Oil Cosmo Hydro HV222. 9EQ-OiL-HV223. AE* Cosmo Oil Co., Ltd.

(1) Reel hub for back tension measurement (Fig.1)

1) Have the reel hub of a commercially available cassettetape ready.(Disassemble the cassette tape and removethe tape from the reel hub.)

2) Attach one end of a thread (having a length of about20cm) to the reel hub using Scotch tape etc.

3) Attach a weight of about 0.21N to the top face of the reel hub.(2) Thread for pinch roller press force measurement

1) Have a commercially available thread having a length ofabout 20cm ready.

1. Driver for height adjustment2. 9EQDRiVER-DH53. BC

(1) Vernier calipers(2) Precision screwdriver (Phillips head and slot-

ted)(3) Long-nose pliers (with thin tips)(4) Tweezers

1. Bit for hexagon nutwith opposite sidedistance of 3 mm

2. 95CM220013. BL* For installation of Tu guide nut

1. Cleaning paper2. JiGDUSPER3. AP* DUSPER (SIGMA) (Ozu Co., LTD.)

1. Ultrathin cotton swab* Commercial item

1. Cleaning liquid Industrial ethyl alcohol* Commercial item1. Loctite adhesive (1401B)* Three Bond

1. Grease Molykote YM-1032. 99FGREASEYM103* Dow Corning

1. Alignment tape (I)2. VR3-GAZXS3. CF* Adjustment of running system (Linear signal)

2

50 or more

No.0 Phillips bitNo.00 Phillips bit

1. Dry grease CFD-409Z* Sankei Chemical Co., LTD.

Sketch1. Name2. Part code3. Code* Model number and usage

* For adjustment of guide roller* Bit shape (see figure below)

Tolerance 0.1

Tip thickness 0.51.4

3

2

1. Name2. Part code3. Code* Model number and usage

2) Tie both ends together to loop the thread.

Fig. 2Fig. 1

Weight

Reel hub

Thread

Thread

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6-2. Cautions in handling the mechanism(1) Cut washers removed at the time of part replacement etc. should be

replaced with new ones without fail.(2) Because no volume adjustment is available in this mechanism, cleaning or

part replacement should be performed if the setting is not satisfied.(3) About oil

a) Be sure to use the specified oil. (If any oil other than the specified oil isused, various troubles will occur.)

b) When lubricating the bearing, be sure to oil free from foreign particlessuch as dust. (If oil in which foreign particles such as dust are mixed isused, it will cause wear and seizure to the bearing.)

c) The term "One drop of oil" here means the amount of oil on the point ofa needle etc. shown in Fig.1.

(4) Repairing of circuits, final adjustment of running system, etc. should beperformed with the cassette controller assembly installed in the mechanism.

(5) When operating the mechanism singly, apply voltage to the loading motorto drive it. The voltage between the terminals should be 3 to 4V DC. (Donot apply external voltage to the loading motor with the mechanismconnected with the main circuit board. Doing so could cause a failure.)(Turning the gears forcedly by hand may cause them to get damaged.)When placing the mechanism singly, use an appropriate spacer so that thecapstan motor is not rubbed.

(6) When installing the cassette controller, push the portion indicated by "A" inFig.2. Do not push other portions.

(7) Take care not to deform the components of the mechanism.Fig. 2

1.5 or less

Oil

Fig. 1

6. INSPECTION AND MAINTENANCE ITEMS AND INTERVALSIn order to maintain the quality of the mechanism section, perform the following maintenance and inspection. After repairing themechanism section, perform the following maintenance regardless of the number of hours of use by the user.

6-1. Maintenance and inspection list

Tape running section (See 8-3.)

Swing armS reel table, Tu reel table

Run

ning

sys

tem

Replace. Clean. Lubricate. Check.

Note:If no envelope output is obtainedin spite of the video head beingcleaned, replace the drumcomponent. (If the envelope output is normal,refer to "11. USEFUL TIPS".)

Perfo

rman

ce ch

eck

[Oil] Cosmo Hydro HV22[Grease] Molykote YM-103

Sankei Chemical CFD-409Z

Driv

ing

syst

em

Number of hours of use (h)500 1,000 1,500 2,000 3,000

Symptoms observed at thetime of maintenance Notes and remarks

Inspection andmaintenance location

[Loctite adhesive] Three Bond 1401B[Cleaning liquid] Industrial ethyl alcohol

Tape not running Tape sagged Block noise Abnormal noise

Replace if any abnormalcondition is found.

Apply oil.[Oil] Cosmo Hydro HV22

Note: Apply oil to the shaft andlightly wipe it off with a cloth.

Abnormal noise

Ejecting cannot be made. Mode cannot be set.

Replace if any abnormalcondition (noise etc.) is found.

Tape not running Tape sagged Damage to tape Abnomaly in reproduced picture

If a part is out of spec, replaceit.

PB, VS/R and loading back tensionS reel table unloaded torque

PB and VS/R winding torqueAbnormal noise

Loading motorMode SW

Center gear bossRelay pulley shaft

Capstan motor (Timing belt)Pinch roller

Drum section, Video head(See 8-3.)

Replace if abnormal rotation or swing (large) is found.

Cleans the portions that come in contact with the tape (the lower drum helical portion in particular). Use the specified cleaning liquid.

Block noise Clogging of head Damage to tape

14

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7-1. Checking of PB (REC) winding torque AC adapter used, Cassette controller assembly installed(1) Set the torque cassette with the cassette controller installed in the mechanism. In the SP record mode (or in the PB mode

if signals have been SP-recorded on the tape), check that the winding torque is within spec.(If there is a torque ripple, read the center value.)0.7+0.2/-0.05Nm, Ripple: 0.1mNm or less

7-3. Checking of height of reel table 3 to 4V DC, Cassette controller assembly not installed (Mechanism only)(1) Remove the cassette controller. (Refer to 9-2.)(2) Apply 3 to 4V DC to the loading motor while referring to 9-1 and select the

PB mode.(3) Fit the holes of the master plane to the two guides (portions A and B) shown

in the Fig.2, taking great care not to allow master plane to strike the runningparts such as the drum and guide roller or the MIC contact.

(4) Using a pair of vernier calipers etc., measure the heights of the reel-supportingfaces of the S reel table and Tu reel table from the top face of the master planeand check that the measured heights satisfy the set values. (Fig.3)When measuring the height of the S reel table, push the tip of the tensionpole with your finger in the direction shown by Arrow A to release the tensionband. (Fig.1)

(5) If the measured height does not satisfy the set value, replace the reel tableand make checking again.

After replacement, select the L start mode (see 9-1) and check that thereel table rotates smoothly.

7-2. Checking of VS-REW winding torque AC adapter used, Cassette controller assembly not installed (Mechanism only)(1) Remove the cassette controller, turn ON the down SW while referring to 9-3, operate

in the test mode (T01) and select the VS-REW mode.(2) Set the torque gauge in the S reel table, push the tip of the tension pole with your finger

in the direction shown by Arrow A to release the tension band, and check that thewinding torque is within spec. (Fig.1) (Do not apply the own weight of the torquegauge or rotate it during measurement.)

(If there is a torque ripple, read the center value.)1.5 0.15Nm, Ripple: 0.15mNm or less

(3) After checking the winding torque, remove the torque gauge and turn OFF the downSW. The mechanism will automatically go into the standby mode.

7. ADJUSTING AND CHECKING OF MECHANISMThe items described here are relevant to the general on-site servicing (field service). This section does not cover adjustment andreplacement for which sophisticated equipment, jigs and techniques are required.In order to maintain the initial characteristics of the mechanism, it is necessary to perform maintenance and inspection and also it isessential not to damage the tape etc. In the case of an adjustment that requires a jig, be sure to use the specified jig.

(1) When adjusting and checking the mechanism, be sure to see that the power supply and the status are as indicated in

Caution on the title.(2) Do not apply external voltage to the loading motor with the mechanism connected with the main circuit board. (Doing

so could cause a failure.)(3) When running the tape, be sure to do so with the cassette controller assembly installed.

A B

MIC contact

Fig.2 Checking of reel table

Fig.1 How to release the tensionband when measuring theVS-REW winding torque

2.4

0.1

2.4

0.1

Set v

alue

of h

eigh

to

f ree

l tab

le

Fig.3

(3)

Set v

alue

of h

eigh

to

f ree

l tab

le

Reel-supporting face

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15

7-4. Checking and adjusting of tension pole position during REC (PB) 3 to 4V DC, Cassette controller assembly not installed (Mechanism only)(1) Checking

Check that the tension pole is located in the prescribed position as shown in Fig.4at the start of a 60-minute tape.If the tension pole is not located in the prescribed position, take out the tape andmake adjustment according to the procedure shown below.

(2) Adjusting (See Fig.4.)1. Select the PB mode without setting a tape.2. Slightly loosen the screw 1 (to such an extent that the T band adjustment base

2 can be moved.)3. If the tension pole is dislocated inward from the prescribed position, shift the

T band adjustment base 2 in the direction shown by Arrow (A). If it is dislocatedoutward from the prescribed position, shift the T band adjustment base 2 in thedirection shown by Arrow (B). Then fix the T band adjustment base 2 with thescrew 1.(For how much the T band adjustment base is to be shifted, refer to Fig.4.)

4. Check the tension pole position as described in "(1) Checking" above.5. If out of position, make readjustment.

7-5. Checking and adjusting of REC (PB) back tension torque AC adapter used, Cassette controller assembly installed(1) Checking

Set the torque cassette (SD-1015). In the SP record mode (or in the PB mode ifsignals have been SP-recorded on the tape), check that the feed-side torque iswithin the following spec.

(If there is a torque ripple, read the center value.)0.55 0.05Nm

(2) Adjusting (See Fig.5.)If the measured back tension torque is out of spec, make adjustment accordingto the following procedure.1. Slightly loosen the screw 3.2. If the back tension is higher, shift the T-SPR adjustment ANG in the direction

shown by Arrow (D). If it is lower, shift the T-SPR adjustment ANG in thedirection shown by Arrow (C).

3. After adjusting the back tension torque, fix the T-SPR adjustment ANG with thescrew 3. Apply loctite adhesive to screw 3.

Screw tightening torque: 0.04 Nm

7-6. Checking of S reel table unloaded torque 3 to 4V DC, Cassette controller assembly not installed (Mechanism only)(1) Remove the cassette controller assembly, apply 3 to 4V DC to the loading motor

and select the L start mode. (See 9-1.)(2) Move the swing arm to the Tu reel table side. At this time, take care not to damage

the gears etc. (See Fig.6.)(3) Set the reel hub for back tension measurement on the S reel table.(4) Using the dial tension gauge, pull the thread of the reel hub in the direction shown

by Arrow A and check that the tension is within spec.

(If the tension fluctuates, read the center value.)10mN or less

Screw 3

Tension pole position(Based on drum base outside shape)

00.3Drum base

T band adjustmentbase 2

Screw 1

Fig.4 Adjusting of position (tape exists)

Fig.5 Checking (tape exists)

T pole

Fig.6 How to measure the S reel table unloaded torque

Move the swing arm tothe Tu reel table side.

A

Apply loctiteadhesive.

T-SPR adjustment ANG4

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7-7. Checking of loading back tension 3 to 4V DC, Cassette controller assembly not installed (Mechanism only)(1) Apply 3 to 4V DC to the loading motor and select the L start mode. (See 9-1.)(2) Move the swing arm to the S reel table side. At this time, take care not to damage

the gears etc. (See Fig.7.)(3) Set the reel hub for back tension measurement on the Tu reel table.(4) Using the dial tension gauge, pull the thread of the reel hub in the direction shown

by Arrow A and check that the tension is within spec.

(If the tension fluctuates, read the center value.)27.5 7.5mN

7-8. Checking of VS-REW back tension 3 to 4V DC, Cassette controller assembly not installed (Mechanism only)(1) Apply 3 to 4V DC to the loading motor and select the VS-REW mode. (See 9-1.)(2) Move the swing arm to the S reel table side. At this time, take care not to damage

the gears etc.(3) Set the torque gauge in the Tu reel table.(4) While turning the torque gauge counterclockwise (one turn in three seconds),

check that the torque is within spec.

(If the tension fluctuates, read the center value.)0.8+0.2/-0.05mNm

Move the swing armto the S reel tableside.

Fig.7 How to measure the loading back tension

A

Fig.9

OK

B

Fig.10

Fig.8

NG

Right guide

Pinch roller

Capstan shaft

7-9. Checking of pinch roller press force 3V DC, Cassette controller assembly not installed (Mechanism only)(1) Hook the thread for pinch roller press force measurement over the pinch lever (position A in Fig.8).(2) Put the mechanism into the PB mode to press the pinch roller against the capstan shaft.(3) Hook the thread for pinch roller press force measurement over the tension gauge and pull the tension gauge in the direction shown

by Arrow B in Fig.10 so that the pinch roller is slightly separated from the capstan shaft.(4) Return the pinch roller gradually and read the value indicated when the pinch roller comes in parallel contact with the capstan shaft

(see Fig.9). Check that the read value is within the following spec.

1.8+0.4/-0.4N After measuring the press force of the pinch roller, promptly exit from the PB mode to separate the pinch roller from the capstan

shaft. (If the pinch roller is left pressed against the capstan shaft for a long time, the pinch roller will be deformed.)

A

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17

8. ADJUSTMENT OF RUNNING SYSTEM8-1. Outline of adjustment of running system

8-2. Adjustment of height of running system After replacement of the Tu guide and slide chassis, adjust the height of the Tu guide using the height adjustment jig. If wrinkles are found in the tape, turn the Tu guide to remove them. (For further details, refer to "Coarse adjustment of running system".) After adjusting the Tu guide height, apply screw loctite at the tip of the shaft.

8-3. Preparations for adjustment of running systemMeasuring instrument and Jig : Oscilloscope, Adjustment remote control, Height adjustment screwdriver, Alignment tapes (for

adjustment of running system and adjustment of SW point), Master plane, Height adjustment jig

Preparations for adjustment of Running systemAdjusting procedure(8-3)

(Replacement parts) Tu guide and arm Slide chassis

(Replacement parts other than above) Pole base Guide roller Drum assembly Cap motor, etc.

Presetting of height not necessary

Coarse adjustment of Running systemAdjusting procedure(8-4)

Final adjustment of Running systemAdjusting procedure(8-5)

Installation of cassette controller

Readjustment of height

Heightadjustment jig

Master plane

Bottom edge

Align the top face of the lower flange of the Tuguide with the bottom edge of the heightadjustment jig.After adjusting the height, turn the headclockwise 180 degrees.

Tu guide

Master plane

View A

Heightadjustment jig

Apply it in this direction.

View A

(1) Clean the surfaces that come in contact with the tape. (Clean

well the drum surface and the lower drum helical surface inparticular.)

(2) Install the cassette controller.(3) Connect the oscilloscope to each TP of the joint circuit board.(4) Turn ON the power of the AC adapter.(5) Select TEST mode T-05 with the adjustment remote control.(6) Play back the alignment tape for running system adjustment

and check that the tape is moving in the SP mode.(7) While observing the PB envelope on the oscilloscope, adjust

the running system so that the envelope becomes flat instates of [+1/4 shift] and [-1/4 shift].(Each time the PB key is pressed, the shift amount changesas shown below.)

Reel

Tu guideTu guide roller

Drum

Sup guide roller

S guide

Pinch roller

Tension pole

Capstan shaft

+1/4 shift - Normal - -1/4 shift - Normal

18

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8-4. Coarse adjustment of running system(Cassette controller installed)

(1) Play back the alignment tape for running systemadjustment and make adjustment so that the inletand outlet sides of the envelope become flat.

(2) In states of [+1/4 shift] and [-1/4 shift], makeadjustment in the same manner as described in (1)above.

A

WrinklePinch roller

Tu guide

Distortion

Distortion

(1) In the PB mode and V/SR mode, check the tape fordistortion between the Tu guide and the pinch roller.

- If wrinkles are found, make adjustment within arange of 180 degrees.

- After making adjustment, apply loctite adhesive tothe tip of the shaft.

(1) In the V/SR mode, check that the envelope waveformis shaped uniformly.

(2) If the envelope waveform is not shaped uniformly,fine-adjust the guide roller and Tu guide.

(1) Check the envelope waveform rise time in switching from the V/SR mode to the PB mode. - 5 seconds or less(2) Check the envelope waveform rise time in switching from the STOP mode to the PB mode. - 5 seconds or less

2. Checking of V/SR envelope waveform

1. Adjustment of height of Su and Tu guide rollers

8-5. Final adjustment of running system(Cassette controller installed)

Fig.1

1. Adjustment of height of Sup and Tu guide rollers

(1) If the ratio of MIN to MAN of the envelope waveform is less

than 60%, adjust the height of the guide roller again. (SeeFig.1.)

(2) Perform unloading and then loading again, select the PBmode and check that there are no significant changes inthe envelope waveform.

* After replacement of the mechanism and drum, adjust the phase and equalizer using the adjustment remote control. (Refer to "10. ADJUSTING THE ELECTRICAL CIRCUITS".)

3. Checking for wrinkles in tape

4. Checking of envelope waveform rise time

2. Adjustment of PB SWP

(1) Play back the alignment tape for SW point adjustment.(2) Using the adjustment remote control, make SWP automatic adjustment.(3) Check that an OK is given as a result of self-judgment. In the case of a NG, adjust the GR height again.

1/4 shift 1/4 shift

NGNG Inlet side Outlet side

Normal

B

Make adjustment so that A B.

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19

(3) L start modeThis mode is used for the Tu reel hub to take up the tapeof a cassette whose leader tape is visible. (In thismode, the S main brake is located away from the S reeltable.)

STANDBY MODE

L START MODE STOP MODE

(4) Stop modeThis mode is used for stopping (camera mode:RecLock). In this mode, the S and T pole bases arepressed against the drum base and the S main brakeis engaged with the S reel table. However the pinchroller and capstan shaft are separated.

Pinch roller

Capstan shaft

Drum baseS pole base

S reel table

S main brake

T pole base

S reel table

S main brake

1. Cut washers removed at the time of part replacement etc. should be replaced with new ones without fail.2. When assembling the mechanism, take care to prevent screws, washers and foreign matter from getting into it. If such things

get into the mechanism, it will cause the mechanism to malfunction.3. Be sure to use the specified cleaning liquid, oil, grease and loctite adhesive shown below. Failure to do so will cause the

mechanism to malfunction. Oil: Cosmo Hydro HV22 (Cosmo Oil) Loctite adhesive: 1401B (Three Bond) Grease: Molykote YM-103 (Dow Corning), Suncall CFD-409Z (Sankei Chemical Co., LTD.) Cleaning liquid: Industrial ethyl alcohol

9. ASSEMBLING OF MECHANISM SECTION AND PART REPLACEMENT (DISASSEMBLING AND ASSEMBLING)This section describes the method of assembling the mechanism section and the method of part replacement.For how to remove the cabinet etc., refer to " 4. DISASSEMBLY OF THE SET".

9-1. Mechanism modeTo operate the mechanism singly, apply 3 to 4V DC to the loading motor.(Do not apply external voltage to the loading motor with the mechanism connected with the main circuit board. Doing so could cause a failure.)(1) Ejection mode

This mode is used to take out a cassette. In this mode, theejection lever is shifted farthest in the direction shown byArrow A. (In this mode, the cassette controller assemblycannot be locked.)

(2) Standby modeThis mode is used to set a cassette. In this mode, the slidechassis is farthest away from the drum and the ejection leveris turned (the cassette controller assembly can be locked).(The tip of the ejection lever is hidden behind the main chassisand the moving part of the down SW is visible.)

EJECTION MODE

Ejection lever

Main chassisBack view

Main chassis

Down SW (moving part)

Ejection lever

Back view

20

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(5) PB (Record, Fast forward, Fast rewind, VSF and VSR)modeThis mode is used for playback, recording, fast-forwarding,fast -rewinding, VSF and VSR. In this mode, the pinch rolleris pressed against the capstan shaft and the S main brakeis located away from the S reel table.

PB (RECORD, FAST FORWARD,FAST REWIND, VSF AND VSR) MODE

9-2. Cassette controller assembly (The cassette controller can be installed and removed without removing the cover.)(1) Apply 3 to 4V DC to the loading motor to establish the standby mode. When removing the cover from the cassette controller, remove

the tow screws (A). (See Fig.1.)(2) Push the lock lever in the direction shown by the arrow and move up the cassette controller. (See Fig.2.)(3) Remove the two screws (C) and remove the down guide (D) in the direction shown by the arrow (E). (See Fig.3 and Fig.4.)(4) Shift the cassette controller in the direction shown by the arrow (F), remove the inner arm guide shaft L and the groove of the inner

arm R toward the inside of the mechanism, and turn the cassette controller. (See Fig.5 and Fig.6.)(5) Turn the cassette controller in the direction shown by the arrow (H) and shift it in the direction shown by the arrow (I) to remove it

from the slide chassis. (See Fig.7.)

Fig.3

Fig.5 Fig.6

Fig.1 Fig.2

Fig.4

(C) (C)(D)Down guide

(E) (E)

At this position, remove the inner arm guideshaft L toward the inside of the mechanism. (F) (F)

At this position, remove the groove of the inner armR toward the inside of the mechanism.

(B)

(A)

Pinch roller

Capstan shaft

S reel table

S main brake

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21

9-3. Method of operating on the circuit board with the cassette controller assembly removed

(1) Apply 3 to 4V DC to the loading motor to establish the standby mode.(2 Insert a sheet of thick paper folded in two as shown in Fig.9 into the position shown in Fig.10 to turn OFF the down SW.

(Pass the paper along the heavy line in the figure.)Note) To go into the REC mode, press the pin of the recognition SW.

(3 Selecting the test mode (T-01) with the adjustment remote control without setting a tape will make it possible to operatethe mechanism with the mode keys.

(4) For ejecting, remove the paper inserted in step (2) above.

If this method is performed improperly, the tape may be damaged. Therefore do not use this method except in special casessuch as measuring the VSR torque. Be sure to follow the cautions shown in this manual.

Fig.7 Fig.8

(H) (H)

(I) (I)

Fig.9

Fig.10

34~36

Fold a sheet of paperin two.

5

Pass the folded paper betweenthe slide chassis and the lock camto press the moving part of thedown SW.

Press

Moving part ofdown SW

Recognition SW pin

22

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9-4. Phase-adjustPhase-adjust the following parts.

(1) Mode SW(2) Main cam(3) Sub cam (The main cam and sub cam should be also phase-adjusted for the chassis.)(4) S loading arm(5) Tu loading arm(6) Loading drive gear (main cam, sub cam, S loading gear)

Note) Check the marker position carefully before disassembling.Note) When installing the loading drive gear, check that the main cam, sub cam, S loading gear are all phase-adjusted.

Fig.1

Fig.2

(5)Tu loading arm ass'y(4)S Loading arm ass'y

(1)Mode SW

Phase adjustmentmark

Phase adjustment (gear section)

Phase adjustmenthole (for chassis)

(2)Main cam

(6)Loading gear drive gear

Phase adjustment hole(for chassis)

Phase adjustmentmark

(3)Sub cam

Phase adjustmenthole (for chassis)

Phase adjustmentmark

(4)S loading arm ass'y (5)Tu loading arm ass'y

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23

1. 4.

6.

2.

3.

5.

303

302

304

(2)LM/Mode FPC

(1)Mode SW

(3)Main cam

305

(4)Ejection lever

A

306(1)Sub cam

307

308

309

(2)SL drive lever

(3)S brake operating lever

(4)T arm operating lever

H

B

315

(7)Capstan motor ass'y

316

(7)Relay pulley

313

311

310

314

(4)TLA support

(6)CAP FPC protection tape

(2)L Motor ass'y

(1)SLA support

312

(3)DEW sensor

(5)Center gear

C

C

B C

D

318

320

323

319

(1)T pole base loading arm ass'y

(7)S loading arm sub ass'y

Phase adjustment

(2)Tu press SPR

(5)S press SPR

(4)S pole base loading arm ass'y

(3)Tu loading gear

322

321

(6)S Loading gear

D

E

In alignment with chassis hole

In alignment with chassis hole

325(1)Guide rail

324

(2)Loading drive gear

F

B

G

Phase adjustment (back)

Phase adjustment (front)

328

329

326

327

(4)Pinch lever return SPR

H

(3)Pinch lever ass'y

(1)Pinch press lever ass'y

(2)Pinch press SPR

9-5. Assembling method9-5-1. Method of assembling the main chassis assemblyNote) For reference, numbers are prefixed to parts names to show the sequence of assembly. (For the greasing/oiling and cleaning locations, refer to the diagram of greasing/oiling locations.)

Type Tightening torque Q'tyB CW1.2-3.0t-0.25 1H CW0.7-1.8-t0.2 1

Type Tightening torque Q'tyA M1.4xL1.6(Special screw) 0.4mNm 2

Type Tightening torque Q'tyC S Tight M1.4xL2.0 0.4mNm 5D S Tight M1.4xL3.0 0.4mNm 1B CW1.2-3.0t-0.25 1

Type Tightening torque Q'tyD S Tight M1.4xL3.0 0.4mNm 3E M1.4xL2.0(t0.2 special screw) 0.4mNm 1

Type Tightening torque Q'tyF M1.4xL1.5(t0.2 special screw) 0.4mNm 1G M1.2xL4.6 0.4mNm 1

(t0.2 particularly special screw)B CW1.2-3.0t-0.25 1

Type Tightening torque Q'tyH CW0.7-1.8-t0.2 1

24

VL-Z1U

9-5-2. Method of assembling the slide chassis assembly

342343

344

345

346

(1)Slide adjustment ANG(2)T-SPR adjustment

ANG

(3)Tu guide arm SPR

(4)Tu guide arm ass'y

(5)Guide adjustment SPR

347 (6)Tu guide flange

347 (6)Tu guide flange

349 (8)Guide nut

348 (7)Tu guideI

I

354

351

352

353

(14)Tu reel table ass'y

(10)T brake gear

350

(9)VSR brake lever

(11)T main brake

(13)S reel table ass'y

356

(16)S brake SPR

(15)S main brake

355

357(17)Tension arm ass'y

358

(18)Tension band ass'y

359(19)T arm SPR

C

H

1. 2.

3.

Type Tightening torque Q'tyI Precision type 2M1.4xL1.0 0.4mNm 2

Type Tightening torque Q'tyC S Tight M1.4xL2.0 0.4mNm 1

(Tightening fully)0.05mNm

(Tightening temporarily)H CW0.7-1.8-t0.2 1

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25

9-5-3. Method of combining the main chassis assembly and the slide chassis assembly(1) Position the assemblies as shown in the figure below (the pole base is slightly protruded).(2) Insert the operation pins (tension arm, Tu guide arm) of the slide chassis assembly into the locations of the main chassis assembly

shown in the figure below, fit the SL drive lever pin of the main chassis assembly into the groove of the slide chassis (the grooveof the slide adjustment ANG), and then fix with the two screws.

J

C

D

377(22)Drum ass'y

371(20)Swing arm ass'y

372(21)Reel cover ass'y

D

I1. 2.

Type Tightening torque Q'tyC S Tight M1.4xL2.0 0.4mNm 2D S Tight M1.4xL3.0 0.4mNm 1J W2.1-4-t0.25 2

Type Tightening torque Q'tyD S Tight M1.4xL3.0 0.4mNm 1I Precision type 2M1.4xL1.0 0.4mNm 2

26

VL-Z1U

9-5-4. Diagram of greasing/oiling locations

VL-Z1U

27

9-6. Method of installing the cassette controller(2)Completed cassette controller

(1)Main slide ass'yLeft side view Right side view

Left side view Right side view(3)Down guide

A-1 A-2

Left side view Right side view

Right side view

Right side view

(4)Cassette cover

B-1 B-2

C: Move down the cassette controller by pushing thisportion. When the cassette controller is locked,attach the cassette cover.

Mechanism viewed from above

B-1,2

1

2

3

4

5

Type Tightening torque Q'tyA Ml1.4xL2.0(Precision type 2) 0.4mNm 2B M1.7x2.5(Precision type 2) 2

28

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9-7. Method of taking out the cassette with the mechanism operating singly(1) Apply 3 to 4V DC to the loading motor for slight unloading.(2) If the tape is slack, turn the rotor (mechanism backside) of the capstan motor by hand to take up the slack in the tape.(3) Repeat steps (1) and (2) above. When the pole base is completely unloaded, check that the tape is not slack.(4) Then apply 3 to 4V DC to the loading motor again. The cassette controller will move up.(5) Take out the cassette.Note) When applying 3 to 4V DC to the loading motor for unloading, do so as shown in Fig.1.

Loading motor

Direction of rotation of the rotorof the capstan motor (frommechanism backside)

Fig.1

pole+ pole

29

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10. METHOD OF ADJUSTING THE ELECTRIC CIRCUIT-Before making adjustment- It seems that, in most cases, this adjusting method is used when it becomes necessary to adjust the electric circuit as a result of

replacement of worn mechanism parts or the video head. When adjusting the electric circuit, check that the mechanism operatesproperly (the mechanism is adjusted completely). If a failure occurs in the electric circuit, be sure to locate the fault using ameasuring instrument and then perform repairing, replacement and adjustment, as described in this adjusting method.Avoid performing undue adjustments etc. without using proper measuring instruments.

The electric circuit components in the circuit board unit of this product are densely-packed into packages. Most of them are surface-mounted for downsizing.When replacing components in servicing the product, perform replacement work swiftly with a soldering iron.In general, surface-mounted components are inferior in heat resistance to large-sized discrete components used in TV sets,stationary decks, etc. Heating the electrode of a surface-mounted component with a soldering iron for a long time needlessly willtherefore lead to a failure. Take great care not to do so.Take special care in this respect when replacing chip multilayer capacitors in particular.We recommend you to use a ceramic soldering iron (Tip temperature: 250C, Contact time: 5 seconds or less).

10-1. Adjustment of liquid crystal video sectionList of measuring jigs

VL-Z1U Specifications of service jigs

Color monitor TV Digital voltmeter DC power source Audio generator

(CR oscillator) Frequency counter AC adapter

Stereo AV output cable (supplied) Adjustment remote control

(RRMCG0033TASA) Signal generator (NTSC pattern generator LCG-401/ 401YC: Manufactured by Leader) Oscilloscope

Vector scope Tape for recording DC cable (supplied with AC adapter) Extension wire of video section Alignment tape

90ADDVC-TAPE (color bar) Error rate adjustment tape (reference tape)

RTPEVA001WJZZ

No. Connection section Connector REF. No. No. of pins New/ Parts cord PriceCont. code

1 H/A PWB MAIN PWB1 SC307SC3302 33P N QPWBHB737WJZZ AN2 H/A PWB MAIN PWB2 SC308SC3301 33P N QPWBHB737WJZZ AN4 MAIN LITHIUM PWB SC8800SC5800 27P-25P QPWBHB742WJZZ Product FPC used AE5 MAIN RUNTA005WJZZ SC1201 80P C QCNW-1373TAZZ BQ6 RUNTA005WJZZ SUB P2901 80P N RUNTZA005WJZZ AX8 Menu key SUB SC2002SC501 9P-15P QPWBHB772WJZZ Product FPC used AE9 H/A PWB MAIN PWB P301P3301 5P QCNW-B171WJZZ Product wire used AF

10 TP jig for envelope checking P3303 30B-B N RUNTZA004WJZZ AW11 Power supply SC310SC2101 12P QCNW-B167WJZZ Product FFC used AC12 ZOOM SC311SC2201 10P C QPWBHB746WJZZ AE13 CCD PWB MAIN SC1001SC1202 33P QPWBHB738WJZZ Product FPC used AD14 Lens unit SUB SC551 25P CLNS-A005RMA5 Product unit used BQ15 MIC SUB P3602 4P RMiCC0108TAZZ Product unit used AP17 MECHA TURN MAIN P1201 2P DUNTKB732PM00 Product unit used AG19 SPEAKER ZOOM P2201 2P VSP0020P-B2WN Product unit used AK20 LCD UNIT MAIN SC1800/SC1801 18Px2 QPWBHB736WJZZ Product FPC used AR

30

VL-Z1U

VL-Z1U Service jig configuration

Lens

CCD

PWB

QPW

BHB7

38W

JZZ

HEA

D A

MP

PWB

SC30

3SC

307

SC30

1SC

308

SC30

4SC

310

SC30

6SC

311

SC30

5P3

01

1010 7 27

QCNW

-B17

1WJZ

Z

LCD

LAM

P

ZOO

M P

WB P2

201

SC22

01SP

EAKE

R

SC20

02

MEN

U

SC58

00SC

5801

BAT

P900

SC50

1

J740

1

J140

1

J290

0

P360

2SU

B PW

B

P290

1

SC12

01

W80

89

P330

3SC

3302

SC33

01

P120

1

P330

1SC

1801

SC18

00

MAI

N P

WB

SC88

00VF

_IF

VF_I

FP8

800

RM

iCC0

108W

JZZ

POW

ER S

WQM

PWCB

734W

JZZ

SC80

2

LCD

PWB

SC80

1SC

800

SC80

3SC

9800

1818

1525

3 22

25980

4

SC55

1

80

1818

30

227SC

1202

3333 33

33 33 12

2

5

MEC

HA T

URN

246

10

SC21

0112

10

10

2

21

*1

*2

QCNW-1373TAZZ

RUNTXA005WJZZ

RUNTZA004WJZZ

SC1001

5

AV DV

DC

QPW

BHB7

42W

JZZ

QPW

BHB7

72W

JZZ

QPWBHB737WJZZ

QPWBHB737WJZZQCNW-B167WJZZ

QPWBHB746WJZZ

LI

13

14

9

17

20

19

48

15

1

2

10

5

6

11

12QP

WBH

B736

WJZ

Z

Mec

hani

sm

*1:

Und

er s

urfa

ce c

onta

ct*2:

Top

sur

face

con

tact

Caut

ion:

Don

't mak

e a

mist

ake

in p

uttin

g in

SC3

301

and

SC33

02.

HOLE

SENS

ORVF

31

VL-Z1U

[TEST POINT]

(Wiring board diagram: Main Side A)

(Envelope checkup TP jig)

PCO D/A-C

PCO D/A-Y

2

SC18

00

TL1431

P330

1

C143

8R1

442

R182

4R7

24

R1823C1809

C1810

C143

9

R732R705

R747

Q143

1L1

802

C708

C140

2R7

07R7

15C7

35C1

441

L140

4Q7

05

Q1402

C704

Q704

R1406

R143

7

C1408

IC1431

R1435

R772R771R718

L1431

R738R736

C143

5

C1416

R1402

R142

2Q1

433

R1434

R143

6

C1802R1801

C1407

C180

1

C1410

R737R729

R180

0

R1405

IC14

01

C1406

R1419

R180

2C1

434

R143

2

R1433

R181

8C1

431

R1805

R763R759

C1409

C1418

R180

4

C1432R1431

Q180

0

C1433

Q143

2

R1441R1440C1437

R1413

R180

6C1

440

R758C710

R180

3

C1804

R1819R1807

R680

0R1

403

C141

7R1

461

Q1405

R180

8C1

803

C143

6

R735R741

R6810

R1404R1421C1419

R6813

L440

4C4

404

R146

2C1

411

Q140

3Q1

434

R1810

L440

6R1

811

R142

4Q1

801

R725C733

C6800

Q4483

R6812C6807R6804

R6803

C448

3R1

809

R6802R1423

R1414

R1438R1439

Q680

1

R1814C1805

R181

6

R720R755

C448

1

R6805

R182

0C1

412

R6807C6801C6802

R447

2

R6817

R4489

C1806R1817

R4471

TL6804

C680

4

Q1404

C180

0

R6809

TL6803

R680

6R1

813

Q448

1

R6816

Q1802

R680

8C4

406

D6800

R1827

C4482

R181

2C4

416

C6805

C681

2

C6811

L680

0

TL7819

TL6809

C440

1L1

800

R4486C4485R4485

R681

1

TL6802TL6801

IC68

01

TL6807

C181

5

R706R710R708

R730R782R711

TL8803C4

419

R449

4C6

806

C681

0

R4488

R4401R4402

R181

5C4

402

Q180

3R6

819

C681

5

C727C732

Q4482

C715

C705

R4487

C681

3C4

405

R726

R682

0R6

818

C4407C4409C4420

C681

6FB

4405

C681

4

R727

C780

2

X701

R4404

L7800

C7800

C440

8IC

703

C714

C780

6C4

421

C780

4C4

410

R701

R782

8R7

831

TL7824

IC4401

R783

0C4

413

R782

7R7

826

C701

R4435R4437R4436

R782

9C8

805

L880

1C7825

IC78

02R1

925

C1911

L3404

L3405

C880

0R1

928

C780

3Q1

913

L880

0Q4

432

C780

5R8

802

R880

1R1

927

C780

8

TL903R1926

C780

9C8

804

Q1912

C442

2C4

414

C347

3C7

801

TL904

C443

6C4

415TL4439

R192

4R8

800

C442

7

IC8800

Q8800

C443

5

TL4438

C780

7C3

436

C978

D960

R440

3C4

423

C4426

C4424C4451

R4456R4454R4414

R4495C4418

C4428R7800C7810

R4415

C446

5C6

803

R446

2C8

801

L7810

TL4440

C446

3

C4462R4451

C4417

R7812R7811

R8804

R4460

R446

1

C962

C445

4R7

820

R783

2

C4403

C929

D916

X4451

R880

5R4

466

R781

9R7

833

L4451

D4452

FB4461

C880

9R7

838

C781

2

TL8801

D4451

C782

9

C8807

C782

8

IC4461

C8806

D781

0

Q8801

R881

9R7

839

R783

4R7

810

R783

7C8

808

R4463

R4453

R7840R7824

R8807

R7836C7830

R7825C7822

R882

0C7827

Q905

C881

4C8

822

Q780

0FL

3702

L931

C881

3R8

809

R8806

C4461

R884

0C8

802

R3711R3713R3701

TL3707TL3705

TL1801

Q446

1

R8827R8814

TL907

R883

9

C3704

R370

6R3

707

TL8802

R884

1Q8

802

C8803

R8828

TH18

00

R3705

Q8804

C3710

R1826C1811

TL911

C371

4R8

808

R881

7

L907

R3717

IC3702

TL3751

C371

3Q9

09C9

53

C939

L908

R371

2

FB3701

R982

C3707

R884

2

C3705

R373

8R3

708 R3709

IC3701

C938

C3712

C1901

Q903

Q3701

C3708

R3710

C3709

Q1901

TL910

L901

C937

R371

8R3

739

TL908

Q900

TL8806

C370

2L3

702

C934

C931

R1941

R883

6

Q1905

C190

4C9

32R9

70

TL8804

R3740

C3706

C3703

R883

4FB

8800

C930

TL8805

C370

1L3

701

L903

C933

L902

C936

R883

5

L900

C982

TL902

TL901

C981

L915

L918

C960

C955

C980

Q908

R990

R987

C970

Q906

C972

Q904

R983C954

R988

C971

L916

Q907

Q910

L911

C990

C973

C975

C956

L917

C974

R951C992

Q911

L923

C991

R932

D701

C371

6R7

80C7

02

R739

C734

TL913

C706

R332

0

L701

Q332

0IC

704

SC3302

C3320R3321

C712

R703

Q703

C3321

R704

R779

C724

R193

2C7

07Q7

01Q7

02

R716R768

R721

R713

R734

R731

C729

R719

C722R749

TL3310

IC706

C737R754

R750C728R7

51R7

53C7

26

R757

C725

R752

C723

C730

IC701

C719

X702

R746

SC3301

R748

TL3302TL3304

C720

R756

R760

R764

R761

R765

R766

C709R7

45R7

22R7

62

TL701

R717

R728

C713

R723R742R709C731R744

R714R743C711

R712

C716

TL3303

R702

C703

TL7824(VF_G_OUT)VF_DAC full scale

TL6807(G_OUT)DAC full scale

TL8804(VF_VG)VF_WB

TL8801(VF_COM)VF_COM

TL8805(VF_VR)VF_WB

TL8806(VF_VB)VF_WB

32

VL-Z1U

(Wiring board diagram: Sub Side A) (Wiring board diagram: Sub Side B)

(Wiring board diagram: LCD Side A)

R824

SC80

3

TL870

D801

C820

TL852

C9805

2

TL9801

TL9800

TL9802

T980

0

R9810

SC9800

R98

01C9

804

C9803

TL853

Q980

0C9

801

C980

6R

9800

L9800

C9800

IC9800

TL832

R98

11TL831

C9802

R9802

TL830

R9807

R9808

C980

7

TL829

TL828

R98

05

R9804

R98

12

R9809

R9803

Q980

1

TL9803

TL9804

TL9805

R98

06

Q9802

TL826

D98

00SC801

TL825

L801

TL824

TL823

R81

5

TL822

R814

TL821

C815

L800

IC800

TL820

C800

TL819

R81

3

TL869

C814

TL827

C816

Q800

TL801

R80

0C8

01

R809

TL811

R802

C805

TL812

C802

TL805

C803

R801

TL813

TL843

C804

TL806

TL807

Q801

TL800

R805

TL808

TL809

TL810

R811

R810

C808

IC801

R81

2C8

13

TL835

TL814

TL851

R80

3

SC800

TL815

R80

4

TL818

TL816

C818

R827

TL817

C821

R816

C809

R825

R826

TL834

R807

R808

R806

R81

7C8

12

TL845

C810

D80

0

TL838

C811

TL846

TL837

TL842

TL850

TL802

TL844

TL848

TL849

C817

C807

TL847

IC803

IC804

IC802

SC80

2

TL803

Q802

R81

9

TL846(LCD_VG)LCD_contrast

TL601 FB600

TL600 C602

VA603

VA602TL602 C601 R652

R600

VA600

R7427

VA601

C600R

603

TL603 R604 R7429

R7428

R7426

D7402

D7401

C1501R1501

C1503R1502C1502C1508C1504R1503C2904C1509

C1510

C1505R1504C1506R1505C1507R1506

C1513

R1507

R1508

R1509

Q1502

R1510

Q1501R524

R1511R1513R1512

D3601

TL510

C521

TL508TL506TL501

FB3601C3600TL556

TL503

TL551TL553TL557TL559TL561TL563TL567 TL568TL571

R2916R2508 C2901C2516

R2909

R2908

TL900

R2509R2513 R2912

R2910

TL570

R2514C2518 TL901

R2511

R2510

C2519

C2903 R2907C2514

TL569

C2910R2512 R2533 R2516

TL902

TL566

C2517 C2515R2515

R581

TL564

IC2901

SC551

C528

R527

TL562TL560

Q552

TL558

P900

IC2502

TL554

R582

R578

D2905

C2902

TL552

TL904

TL555

TL903

D2904

Q2902R3602D2902R3635

C2520C2521

D2906

R2520

R2527

R2526

R2528

R2525R2531

D551

TL565

R2523R2530

TL504

R2918

R2903Q2904

TL502

R2904R2911

R2906

Q2905

R2913

C526TL505

R2917

SC501

R2919

TL507

Q2903C524

C522

TL509

Q2901

VA501

R2905

TL511

Q2906

D3600

C523C525

TL3603

SC1501

C2906R2901 R1480

R2915

R2914

C2905 1

TL1477

CP1

CP2

L2901CP3

TL1473

TL1472

TL1471

TL1476

TL1470

C553C554C556C558C559C561R552R553

R555

R559

R2556R2555

Q2551

R2552R2560R2559

C3605

R3607

Q3600R3605

R3603C3601

C3602R3604R3606C3603R3611R3612

IC3600

L601

Q600C507

L501

C503C502

2

J600

J1401

R1475

J7401

J2900

R1471

R1477

R1478R1476 R1479

R2920

R1472

R523P2901

L2900

R525

C575R573

Q502

R572

IC503

R3644R3643

R504 R528

R529

Q501

IC501

FL501

R513

R605Q601

R508

R514

R512R505C506

R507

R502

R506R530

R510

R602

C642

C641

C509C529R

531

R601

R526R509 R501 C501R648 C645 R645 R647 C649 R657C604 C640 R659 C636 C639 R656

L3601

C638 R658L600

C634

C637

C527

R655

C3604

C632 C635 C627

R632

Q3603

R641 R643R636

Q604

R637R638 C646R634

C605

R3618R631

R635

R651

C630

C629R629

TL3600

C633 R633 R3642

C3607

IC600

R622C626R625

C631

R627R630

C628C651R628R624C625

R3600 C621 R626 Q3602

C624 Q602

L3600

R611

R639

C619 R619R3601 R653

C623

C622C2551 C620

R3616R3645

C608 R616 R614 R3610C3641C643Q2554 C3640

C617

R3609R3641

C614C607

C613R618C615

C609C616R621

R2561

C610 R3640

C618

R3628 C650R612

R606R617C606

C611

C612

Q2552 C648 R3625

C647

R3630C3627

R620R615 Q3604R613

Q3601

C3621R3620C3610C3608C3609

R661 C3613

R2551R2554 R3608

C3619 R3615R3617R623 R607

C3625

C3626

R3627R3623

C3617

R3636C3615

R2553

C3611R3613

C3629Q2553

Q603

Q605

C3631

R2558

C603

R2557

C3614R3614

R3632R610R3646

C644

R654R3633

C560

C3612

R3634

IC3601

R557

C3634

C3635

C3632

C552

R3631

R554

IC551

C3646

C557

R3639

TL3602C3616

C3618

C3630C3628C3622

R3624R3621

C555

R3637

L551R551

C551

P3602R3629

C3623

R3619

R3622

C3620C3606

C574

R3638

C3624R3626

C562C573

TL3601

TL3601(INT MIC L)Checking of EE levelChecking of f characteristics

TL1472Checking of EE levelChecking of f characteristics

33

VL-Z1U

[Execution of adjustment]Adjustment of servo and system controller1. System code settingIt is necessary to set the following data items after replacing IC705 (E2PROM).

Select the VCR adjustment mode and set the data value at each address.

Automatic adjustmentMode VCR adjustment modeAdjusting 1) Using command 12, select the VCR adjustment mode.method 2) Using command 20, enable writing to the E2PROM.

3) Using command 22, set the above-shown system codes according to the model.4) Using the command, inhibit writing to the E2PROM.5) Using the command, exit the VCR adjustment mode.

Examples Replacement of E2PROM (IC705)

Manual adjustmentMode VCR ADJ modeAdjusting 1) Set the CAM/OFF/VCR selector switch to VCR.method 2) Press "CONTINUE" "VCR adjustment" on the remote control to enter the VCR mode.

(At this time, "VCR ADJ" is displayed in the lower left part.) Enter the specified value at each address. Shown below is the procedure for setting.3) Select an address by increasing or decreasing the flashing numeric value with the FF or REW key and press the PB key to confirm it.4) Set the flashing numeric value to the specified value by increasing or decreasing it with the FF or REW key and press the PB key to confirm it.5) Press the STOP key to make it possible to select an address.6) Repeat steps (3), (4) and (5) above until all the data items are set. Then press "CONTINUE" to exit the VCR mode.7) Set the CAM/OFF/VCR selector switch to OFF.

Examples Replacement of E2PROM (IC705)

2. Adjustment of HSWPMode VCR ADJ modeAdjusting 1) Select the video mode and play back the alignment tape.method 2) Press "CONTINUE" "HSWP ADJ" keys on the remote control.

HSWP adjustment execution (When the adjustment is completed, "GOOD" is displayed on the LCD andejecting is performed automatically.)

If adjustment cannot be made, "NG" is displayed on the LCD.Examples Replacement of mechanism Replacement of E2PROM

Code Specifications Destination Specifications Menu setting Software switching CalendarAddress 01 09 02 0A 03 0B 04 0C 05 0D 07 0F

A9 56 01 FE B6 49 00 FF 00 FF 03 FC

Code 1394/exif model nameAddress 1A1 1A2 1A3 1A4 1A5 1A6 1A7 1A8 1A9 1BD 1BE 1BF

56 4C 2D 5A 31 55 00 00 00 00 00 00

* After replacing IC705 (E2PROM), make the following settings and then make adjustments.

(E2PROM) data table(1) Magnetic parametric systemAddress 27 28 2B 25 26Data 70 90 A0 70 A0

34

VL-Z1U

Mode VCR ADJ modeAdjusting 1) Play back the alignment tape. (A tape recorded on this unit may be used instead of the alignment tape.)method 2) Select the adjustment mode (V-ADJ).

3) Select address "2A" to call up the data.4) Using the FF and REW keys, adjust the data value so that reproduced pictures are shown. (Even if block

noise occurs at this time, it is allowable.)Note: After the address "2A" data has been adjusted, be sure to make the error rate adjustment.

Examples Replacement of circuit board (main) Replacement of E2PROM

ADJUSTMENT OF MAGNETIC PARAMETRIC CIRCUIT SYSTEM1. Adjustment of PLL VCO

2. Adjustment of phase and equalizer (To be performed in the VCR mode)Mode VCR ADJ modeAdjusting 1) Set a error rate adjustment tape (RTPEVA001WJZZ).method 2) Select test mode 0F using the adjustment remote control. Automatic adjustment will be started (the following

sequence will be performed automatically).

3) Turn ON and OFF the power.4) Checking of error rate Select test mode 0B using the adjustment remote control.5) Manual adjusting method (video adjustment mode) * In this adjustment, play back a tape recorded on this unit in the LP mode. Change the data values at addresses 26 and 2B for the phase and the data values at addresses 25 and 27 for

the equalizer so that the error rate is minimized.

Examples Replacement of mechanism Replacement of circuit board (main) Replacement of E2PROM

Tape EJECTRecording of built-in VI/O color bar

VS REW PB

Automatic adjustment of phase and equalizer

Judgment

OK: Blue indication on LCD

NG: Red indication on LCD

Sync error Error rate

HL

Phase EqualizerH ch side 2B 27L ch side 26 25

Sync error 20 or lessError rate 200 or less (SP Mode)

330 or less (LP Mode)

3. Adjustment of shutdownMode VCR adjustment modeAdjusting 1) Set a recordable tape and select the camera mode.method 2) Press "CONTINUE" "TEST SEL" on the adjustment remote control to enter the TEST mode (T-01 flashing).

3) Select T-03 with the FF and REW keys and press "PB" key.4) Adjust the power supply voltage so that TL904(+) becomes 6.00V 50mV as viewed from TL900(-).5) Press the "Display change" button on the main unit. Turn OFF the power.

Examples Replacement of microcomputer (IC701), Regulator (IC704) and E2PROM (IC705)

35

VL-Z1U

ADJUSTMENT OF VIDEO I/O CIRCUIT SYSTEM

1. Adjustment of PCO D/A-YMeasurement point (On envelope checkup TP jig)Address VCR ADJ 566 Mode EE modeAdjusting method 1Disconnect the DC cable or battery from the unit.

2Connect the envelope checkup TP jig to P3303.3Reconnect the DC cable or battery to the unit, and turn on the power. (on the shooting side)1) Connect the AVS cable to the monitor (TO).2) Select the adjustment mode (V-ADJ).3) Select address "566" to call up the data. (A 100% white signal appears.)4) Set the "Y" signal of the envelope checkup TP jig to 1.0 0.05Vp-p by changing the data value

with the FF/REW keys.Examples Replacement of IC705, IC4401, IC1401

2. Adjustment of PCO D/A-CMeasurement point (On envelope checkup TP jig)Address VCR ADJ 567 Mode EE modeAdjusting method 1Disconnect the DC cable or battery from the unit.

2Connect the envelope checkup TP jig to P3303.3Reconnect the DC cable or battery to the unit, and turn on the power. (on the shooting side)1) Connect the AVS cable to the monitor (TO).2) Select the adjustment mode (V-ADJ).3) Select address "567" to call up the data.4) Set the "C" signal of the envelope checkup TP jig to 0.64 0.05Vp-p by changing the data value

with the FF/REW keys.Examples Replacement of IC705, IC4401, IC1401

(Envelope checkup TP jig)

1.0 0.05

0.64 0.05

yyyyyy

yyyyyy

yyyyyy

yyyyyy

yyyyyy

yyyyyy

yy

yy

yy

ADJUSTMENT OF VF CIRCUIT

SC18

00P3

301

42R1

824

R1823C1809

C1810

C143

9R7

47L1

802

C708

C140

2R7

07R7

15C7

C144

1L1

404

Q705

Q1402

C704

Q704

R1406

C1408

R772R771R718

R738R736

C1416

R1402

R142

2

C1802R1801

C1407

C180

1

C1410

R737R729

R180

0

R1405

IC14

01

C1406

R1419

R180

2R1

818

R1805

R763R759

C1409

C1418

R180

4Q1

800

C1437

R1413

R180

6

R758C710

R180

3

C1804

R1819R1807

R680

0R1

403

C141

7R1

461

Q1405

R180

8C1

803

R735R741

R6810

R1404R1421C1419

R6813

R146

2C1

411

Q140

3

R1810

R181

1R1

424

Q180

1

R725C733

C6800

R6812C6807R6804

R6803

R180

9

R6802R1423

R1414

Q680

1

R1814C1805

R181

6

R720R755

R6805

R182

0C1

412

R6807C6801C6802

R6817

C1806R1817

TL6804

Q1404

C180

0

TL6803

R680

6R1

813

R6816

Q1802

R680

8

D6800

R1827

R181

2C6

812

C6811

800

TL7819

TL6809

C440

1L1

800

R681

1

TL6802TL6801

IC68

01

TL6807

C181

5

R706R710R708

TL8803

C681

0

R4401R4402

R181

5C4

402

Q180

3R6

819

C681

5C7

05C6

813

C440

5R6

820

R681

8C6

816

FB44

05C6

814

C780

2

X701

L7800

C7800

IC70

3C7

806

C780

4R7

828

R783

1

TL7824

IC4401

R783

0R7

827

R782

6R7

829

C880

5L8

801

C7825

IC78

02R1

925

C1911

L3404

C880

0R1

928

C780

3Q1

913

L880

0C7

805

R880

2R8

801

R192

7C7

808

TL903R1926

C780

9C8

804

Q1912

C347

C780

1

TL904

R192

4R8

800

C442

7

IC8800

Q8800

C780

7C3

43

C978

D960

R440

3

C4426R4495C4418

C4428R7800C7810

R4415

C680

3C8

801

L7810

TL4440C4417

R7812R7811

R8804

C962

R782

0R7

832

C4403

C929

D916

R880

5R7

819

R783

3C8

809

R783

8C7

812

TL8801

C782

9

C8807

C782

8

C8806

D781

0

Q8801

R881

9R7

839

R783

4R7

810

R783

7C8

808

R7840R7824

R8807

R7836C7830

R7825C7822

R882

0

C7827

Q905

C881

4Q7

800

702

C881

3R8

809

R8806

C880

2

TL3707TL3705

R8827R8814

TL907

C3704

3707

TL8802

Q880

2

C8803

R8828

R3705

C3710

TL911

R880

8R8

817

L907

R3717

IC3702

Q909

C939

L908

FB3701

C3705

C938

C3712

C1901

Q903

C3708

C3709

Q1901

TL910

L901

TL908

Q900

TL8806

C370

2L3

702

C934

R1941

R883

6

Q1905

C190

4C9

32R

TL8804

R883

4FB

8800

TL8805

701

L370

1L9

03C9

33L9

02C9

36R8

835

TL7824(VF_G_OUT)VF_DAC full scale

TL8804(VF_VG)VF_WB

TL8801(VF_COM)VF_COM

TL8805(VF_VR)VF_WB

TL8806(VF_VB)VF_WB

1. Setteing of parameters (Main PWB)* Preset the following data.

(Wiring board diagram: Main Side A)

PCO D/A-C

PCO D/A-Y

Address 582 585 597 5B9 5E4 5E5 580 588 589 58D 5A2 5A4 5A7 5A8 5A9 5B5 5B7 5B8 5C9 5D3NTSC 3D 40 00 00 00 00 28 00 F1 40 8B 8B 7D E0 PAL 00 00 18 18 00 00 00 00 D0 F1 E7 E7 8B 8B 7D E0 04

36

VL-Z1U

The same adjusting procedure and connections asdescribed for the VCR section are used.

ADJUSTMENT OF LCD CIRCUITWhen making this adjustment, set the backlight switch to "Normal".

(Wiring board diagram: Main Side A) (Wiring board diagram: LCD Side A)

1. Setteing of parameters (Main PWB)* Preset the following data.

C818

R827

C821

C809

R825

R826

R807

R808

R806

812

TL845

C810

D80

0

C811

TL846

TL850

TL802

TL844

TL848

TL849

C817

TL847

SC80

2

TL803

TL846(LCD_VG)LCD_contrast

2. Adjustment of VF_COM amplitude (Main PWB)Measurement point TL8801(VF_COM) Address VCR ADJ 32Procedure 1) Set the data value at address 5EB (TESTSW2) to 77.

2) Connect the digital voltmeter to TL8801 (VF_COM). At address 32 (VF_DAC_C), adjust the DCvoltage to the adjustment rating.

Adjustment rating 3.75V 50mVExamples Replacement of IC705

3. Adjustment of VF_DAC full scale (Main PWB)Measurement point TL7824(VF_G_OUT) Address VCR ADJ 59EProcedure 1) Set the data values at addresses 587 (GRYLEV)/58C ( PEAK)/5EB (TESTSW2) and 5E6 (OSDSW)

to FF/80/77 and 00, respectively. (The LED shows nothing.)2) Set the data values at addresses 5A0 (CLAMP)/58D (PEDESTAL) and 5B9 (VCLK3 INV) to 00/80 and

48, respectively.3) Connect the digital voltmeter to TL7824 (VF_G_OUT) and measure the DC voltage. * The measured voltage is (DA_VF-G).4) Set the data values at addresses 5A0 (CLAMP) and 58D (PEDESTAL) to 80 and 00, respectively.5) At address 59E (VF_DAC_G), adjust the DC voltage to the adjustment rating.6) Preset the data values at addresses 59D (VF_DAC_B) and 59F (VF_DAC_R) so that they are the

same as the data value at address 59E (VF_DAC_G).7) Reset the data at addresses 587 (GRYLEV)/58C ( PEAK)/58D (PEDESTAL)/5A0 (CLAMP)/5B9

(VCLK3 INV)/5E6 (OSDSW) and 5EB (TESTSW2) to their original values. (Initial values: 40/C5/38/28/42/71 and 7F)

Adjustment rating DA_VF-G +0.23V 10mVExamples Replacement of IC705, IC4401

4. Adjustment of VF_WB (Main PWB)Measurement point TL8804(VF_VG), TL8805(VF_VR), TL8806(VF_VB)Address VCR ADJ 58E, 590Procedure 1) Set the data values at addresses 587 (GRYLEV) and 5E6 (OSDSW) to 80 and 70, respectively.

2) Connect the oscilloscope to TL8804 (VF_VG) and TL8805 (VF_VR), and at address 58E (VF_WB-R), adjust the amplitude to the adjustment rating.

3) Connect the oscilloscope to TL8804 (VF_VG) and TL8806 (VF_VB), and at address 590(VF_WB_B), adjust the amplitude to the adjustment rating.

Adjustment rating 0mV 40mV, 0.1mV 40mVExamples Replacement of IC705, IC4401, IC8801

Address 046 047 048 049 099 0A5 0A6 0A7 0B5 406 407 408 409 427 435 40A 40B 41ENTSC 1E 54 6B 76 01 40 7E 15 64 7F 7F 20 20 E7 24 70 70 00PAL 69 E5

Address 090 098 09A 0A3 0A4 097 40E 40F 42B 42D 42FNTSC 7F 40 91 96 C2 PAL 00 21 A2 A8 C9 14 14 03 09 06

2

SC18

00

TL1431

C143

8R1

442

C1810

C143

9L1

80C1

402

C144

1L1

404

R1406

C1408

IC1431

C1416

C1407

C1410

R1405

IC14

01

C1409

C1418

R1441R1440C1437

R1413

C144

0R6

800

R140

3C1

417

R146

1

Q1405

C143

6

R6810

R1404R1421C1419

R6813

R146

2Q1

403

Q143

444

06R1

424

C6800

R6812C6807R6804

R6803R6802R1423

R1414

R1438R1439

Q680

1C4

481

R6805

C

R6807C6801C6802

R6817

TL6804

C680

4

Q1404

R6809

TL6803

R680

6

R6816

R680

8C4

406

D6800

C6805

C681

2

C6811

L680

0

TL7819

TL6809

R681

1

TL6802TL6801

IC68

01

TL6807

94C6

806

C681

0

R681

9C6

815

C681

3R6

820

R681

8C6

816

C681

4

L7800

C7800

R782

8R7

831

IC4401

R782

7R7

826

R782

9IC

7802

C780

3

TL6807(G_OUT)DAC full scale

37

VL-Z1U

2. Adjustment of DAC full scale (Main PWB)Measurement point TL6807(G OUT) Address VCR ADJ 094(G)Mode VCR AV inputAdjusting method 1) Set the data values at addresses 41E/086/41C and 410 to FF/80/77 and 00, respectively.

(The LED shows nothing.)2) Set the data values at addresses 096/411 and 0A8 to 00/80 and 48, respectively.3) Connect the digital voltmeter to TL6807 (G_OUT) and measure the DC voltage. * The measured voltage is (DA_VG).4) Set the data values at addresses 096 and 411 to 80 and 00, respectively.5) At address 094, adjust the DC voltage to the adjustment rating.6) Preset the data values at addresses 093 and 095 so that they are the same as the data value at address 094.7) Reset the data at addresses 41E/086/096/41C/411/0A8 and 410. (Initial value: 00/C5/28/7F/28/

42 and 7D)Adjustment rating DA_VG + 0.35V 10mVExamples Replacement of IC705, IC4401

4. Adjustment of LCD_ contrast (LCD PWB)Measurement point TL846(LCD_VG) Address VCR ADJ 7C3Test signel 0.900VProcedure 1) Set the data value at address 41E (GRYLEV) to BE. (100% white display)

2) Set the data value at address 41C (TESTSW2) to 77. (1H inverted STOP)3) Connect the digital voltmeter to T