hitachi c43-fl8000.pdf

7/25/2019 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



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



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:

hitachi c43-fl8000.pdf

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