hitachi c43-fl8000.pdf
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CONTENTS
SAFETY NOTICE
SAFETY PRECAUTIONS
C47 WD8000 C57 W
C43 FD8000 C50 F
C43 FL8000
P M CHASSIS
C
MODEL:
SERVICE MA
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S FETY NOTICE
USE ISOLATION TRANSFORMER WHEN SERVICING
For continued X-Radiation protection, replace picture tube with original type or H
equivalent type.
This Service Manual is intended for qualified service technicians, it is not me
do-it-yourself. Qualified technicians have the necessary test equipment and tool
trained to properly and safely repair complex products such as those covered by this
Improper performed repairs can adversely affect the safety and reliability of the pro
warranty. If you are not qualified to perform the repair of this product properly and
not risk trying to do so and refer the repair to a qualified service technician.
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S FETY PREC UTIONS
1. Before returning an instrument to the customer,
always make a safety check of the entire instrument,including but not limited to the following items:
a) Be sure that no built-in protective devices are
defective and/or have been deleted during servicing.
(1) Protective shields are provided on this chassis to
protect both the technician and the customer.
Correctly replace all missing protective shields,
including any removal for servicing convenience.
(2) When reinstalling the chassis and/or otherassembly in the cabinet, be sure to put back in place
all protective devices, including but not limited to
nonmetallic control knobs, insulating fish-paper,
adjustment and compartment covers shields, and
isolation resistor/capacitor networks. Do not operate
this instrument or permit it to be operated
without all protective devices correctly installed
and functioning. Service technician who
current measured must not
Reverse the instrument poweand repeat test. (See the
diagram)
AC Leakage
INSTRUMENT
UNDER TEST
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S FETY PREC UTIONS
g) X-radiation (TUBE) -The primary source of
X-radiation in this receiver is the picture tube. The tubeutilized for the above mentioned function in this
chassis is specially constructed to limit X-radiation
emissions.
For continued X-radiation protection, the replacement
tube must be the same type as the original. HITACHI
approved type.
When troubleshooting and making test measurements
in a receiver with a problem of excessive high voltage,avoid being unnecessarily close to the picture tube
and the high voltage component.
Do not operate the chassis lo
to locate the cause of excessi
h) X-radiation Shield -This rec
X-ray shield plates for protect
Do not remove X-ray shield
shown in Fig.1 unnecessarily
and/or making test measurem
To prevent X-radiation, after
tube and lens, confirm these c
correctly to bracket and cabinoff easily.
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S FETY PREC UTIONS
2. Read and comply with all caution and safety-related
notes on or inside the receiver cabinet, on thereceiver chassis, or on the picture tube.
3. Design Alteration Warning - Do not alter or add to
the mechanical or electrical design of this TV receiver.
Design alterations and additions, including but not
limited to circuit modifications and the addition of
items such as auxiliary audio and/or video output
connectors, might alter the safety characteristics of
this receiver and create a hazard to the user. Anydesign alterations or additions may void the
manufacturers warranty and may make you, the
servicer, responsible for personal injury or property
damage resulting therefrom.
4. Picture Tube Implosion Protection Warning - The
picture tube in this receiver employs integral
implosion protection. For continued implosion
6. Observe original lead dress. Ta
correct lead dress (the AC suantenna wiring) in the following
a) Near sharp edges
b) Near thermally hot parts
Be sure that leads and com
thermally hot parts. Always in
pinched, out-of -plate, or fr
change spacing between compcircuit board; Check AC power
7. Components, parts, and/or wir
overheated or are otherwise
replaced with components, pa
original specifications. Additio
cause of overheating and/
necessary, take corrective a
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CAUTIONS WHEN CONNECTING DISCONNECTING THE HV CON
Perform the following when theHV connector (anode connector)
is removed or inserted for PRT
replacement, etc.
During Removal
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TECHNIC L C UTIONS
High Voltage limiter circuit operation check
1. Turn off TV and delete resistor RH19 (82K) in the Power/Deflection PWB, set 50K VR fulresistance).
2. Set the AC input to 220V AC and turn on TV.
3. Confirm test pattern on PRT is a usable picture, then slowly adjust 50KVR until the pictushuts down.
4. When the limiter circuit is operating properly, High Voltage will be less than 35.6kV(maxcontrast).
5. Turn off TV immediately after checking High Voltage limiter circuit operation.
6.Unplug TV for one minute to reset shutdown circuit. Remove the jig A, and then add resistor RH
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LE D FREE SOLDERING GUIDE
Lead free solder
With some exception, this product is going to use lead free solder (unleaded) to h
environment from the September of 2004. Please read these instructions before attempt
work.
Caution: Always wear safety glasses to prevent fumes or molten solder from gettin
Lead free solder can splatter at high temperatures. (600C).
Lead free solder indicator
There is a F mark made behind the name of PWB or close to its on the printed circuit boar
solder.
Properties of lead free solder
The melting point of lead free solder is 40--50C higher than lead solder.
Servicing solder
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SPECIFIC TIONS
Specifications
Model C43-FL8000 C43-FD8000 C50-FD8000 C47-WD8000
Screen size 109cm 127cm 119cm
Power supply
Power consumptionRefer to the values as indicated on the rating label pasted at the bac
PAL B.G/I/D.K
SECAM B.G/D.K
NTSC 50
M/NTSC
NTSC3.58-5.5/6.0/6.5
NTSC4.43-5.5/6.0/6.5
RF/VIDEO
PAL/SECAM 60
Receptionsystem
COMPONENT
Frequency range 44MHz-863 MHz
Total scan lines 1125i 750p 625p 625i
Active scan lines 1080i 720p 576p 576i
Vertical frequencyHz 50/60 60 50 50
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GENER L INFOM TION
16:9 MODEL C47-WD8000 / C57-WD8000
Control panel and side panel
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GENER L INFOM TION
Rear panel
Antenna terminal
Monitor output
terminals
Audio/Video input terminals 3,4
Audio/Video input & Component
input terminals 1,2
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GENER L INFOM TION
4:3 MODEL C43-FD8000 / C50-FD8000/ C43-FL8000
Control panel and side panel
POWER button
POWER indicator
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GENER L INFOM TION
Rear panel
(The rear panel shown as below is designed for C43-FL8000 model.)
Antenna terminalMonitor output
terminals
Audio/Video input terminals 3,4
Audio/Video input & Component
input terminals 1,2
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GENER L INFOM TION
Rear panel
(The rear panel shown as below is designed for C43-FD8000 model and C50-FD8000
Antenna terminal
Monitor output
terminals
Audio/Video input terminals 3,4
Audio/Video input & Component
input terminals 1,2
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CPU
I PIN_FUNCTION
PIN PIN_NAME FUNCTION I/O
1 V HOLD1 Vertical Hold1 I
2 HLF Filter 1 I/O
3 IRB_RXD Communication RXD I/O
4 IRB_TXD Communication TXD I/O
5 HDMI CEC IN HDMI CEC Input I/O
6 IR_IN REMOTE IR Input I/O
7 M-S SYNC DET Sync Detect(M/S) I/O
8 BYTE Byte(GND) I
9 FLASH(CNVSS) CNVSSFOR PROGRAM I
10 SUB OSC IN SUB OSC Input I/O
11 SUB OSC OUT SUB OSC Output I/O
12 RESET Reset I
13 MAIN OSC OUT MAIN OSC Output O
14 VSS(ORIGIN) VSS(GND)
15 MAIN OSC IN MAIN OSC Input I
PIN PIN_NAME F
51 FC DATA IN FC DATA
52 FC DATA OUT FC DATA
53 FC CLOCK CLOCK F
54 FC ENABLE FC ENAB
55 SCL5 IIC CLOC
56 SDA5 IIC DATA
57 MC LED MC LED
58 POWER LED Power LE
59 TV POWER Power ON
60 IRB IR SELECT IR Select
61 MC ENABLE MC MOD
62 OSD H SYNC IN OSD H SY
63 MC WAKEUP OUT MC MOD
64 OSD V SYNC IN OSD V SY
65 60Hz OUT 60Hz Out
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TROU LE SHOOTING
Is click soundof Relay heard?
I901,I904,
F902 etc
Check
No
Raster
YES
Is Voltageat pin(6) of PPT3
(R947) 2.5V?
Check
uCOMPower control
(1) TROUBLE SHOOTING for POWER CIRCUIT
No raster and no power (How to check LEDs Diagnosis)
(Signal Power PWB)
(Signal Power PWB)
(Signal Power PWB)
Is Voltageat D949(K) 5V?
NO
NONO
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TROU LE SHOOTING
(2) PROPTECTION CIRCUIT BLOCK DIAGRAM
9:+115V
8:+28V
DP58:>133
QP41:>1.8A
Q
ZDDP
60:>32V
ZD
ZD
=
GREEN
LED
upply)
Deflection:
DEF+115V
Conver/DCU:
DEF-28V
Conver/Vert:
DEF+28V
Video:
DEF+220V
DCU:
DEF+7.5V
Heater:
DEF+6.3V
r
D
DP63:
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