JVC PD-42V31BJE Bedienungsanleitung

SERVICE MANUAL

2006/1

PDP COLOUR TELEVISION

YA013C20061

PD-42V31BJE,

PD-42V31BSE,

PD-42V31BUE

HOW TO IDENTIFY TYPES OF THE PDP PANEL

There are 3 types of PDP used with this model. Make sure to confirm the type of the panel before performing the procedure as the

adjustment value varies according to the panel type. Refer to the below table and identify the PDP in accordance with he panel base

material and the serial No.

Supplementary

Please be informed that the related contents are added due to the change of the PWB in the PDP Unit.

Therefore, this service manual describes only the items which differ from those of the PD-42V31BJE,

PD-42V31BSE and PD-42V31BUE service manual.

For details other than those described in this manual, please refer to the PD-42V31BJE, PD-42V31BSE and

PD-42V31BUE service manual (No.YA013, 2003/9)(No.YA013B, 2004/6).

Panel base material Types of the PDP How to identify types of the PDP

ALIMINUM DIE-CAST ALIMINUM DIE-CAST TYPE -----

ALIMINUM PRESS PLATE ALIMINUM PRESS PLATE-A TYPE PANEL SERIAL 1213 xxxx xxxx

ALIMINUM PRESS PLATE-B TYPE PANEL SERIAL 1223 xxxx xxxx

BASIC CHASSIS

1-2 (No.YA013C)

TABLE OF NEW AND OLD PWB

SECTION 1

PRECAUTION

Please refer to "PD-42V31BJE, PD-42V31BSE and PD-42V31BUE (No.YA013)" about this section.

SECTION 2

SPECIFIC SERVICE INSTRUCTIONS

Please refer to "PD-42V31BJE, PD-42V31BSE and PD-42V31BUE (No.YA013)" about this section.

SECTION 3

DISASSEMBLY

Please refer to "PD-42V31BJE, PD-42V31BSE and PD-42V31BUE (No.YA013)" about this section.

PWB assy Name PDP Panel unit No. Part No.

Old New

X-MAIN PWB QLE0023-001 LJ92-00758A

LJ92-01057BQLE0023-002

QLE0023-003 LJ92-00943A

Y-MAIN PWB QLE0023-001 LJ92-00759A LJ92-00759A-S

QLE0023-002

QLE0023-003 LJ92-00944B LJ92-01058B

(No.YA013C)1-3

SECTION 4

ADJUSTMENT

4.1 ADJUSTMENT AFTER THE Y-MAIN PWB REPLACEMENT

< An example of misadjustment of the Y-MAIN PWB >

4.1.1 THE LOCATION OF THE PWB IN THE PDP UNIT

Faulty light emission occurrence

PDP (PANEL) UNIT

Y-BUFFER-U PWB

Y-BUFFER-L PWB E-BUFFER PWB

F-BUFFER PWB

G-BUFFER PWB

Y-MAIN PWB

X-MAIN PWB

LOGIC-MAIN PWB

1-4 (No.YA013C)

4.1.2 ADJUSTMENT ITEMS AND TESTING POINTS ON THE Y-MAIN PWB [LJ92-00759A]

VR5001

VR5002

VR5003

TP OUT4

TP VSCH

VR5004

Rear of set

(No.YA013C)1-5

4.1.3 ADJUSTMENT ITEMS AND TESTING POINTS ON THE Y-MAIN PWB [LJ92-00944B]

Rear of set

TP OUT4

VR5003

VR5004

TP VSCH

VR5001

VR5002

1-6 (No.YA013C)

4.1.4 ADJUSTMENT ITEMS AND TESTING POINTS ON THE Y-MAIN PWB [LJ92-00759A-S] [LJ92-01058B]



TP OUT4

VR5003

VR5004

VR5001

VR5002

Rear of set

TP VSCH

(There is nothing written on the

PWB)

(No.YA013C)1-7

4.1.5 ADJUSTMENT PROCEDURE

There are 3 types of PDP used with this model. Be careful as the adjustment values are different according to the types of the panel.

The types of the PDP are as shown in the table below.

Types of the PDP How to identify types of the PDP

ALIMINUM DIE-CAST TYPE -----

ALIMINUM PRESS PLATE-A TYPE PANEL SERIAL 1213 xxxx xxxx

ALIMINUM PRESS PLATE-B TYPE PANEL SERIAL 1223 xxxx xxxx

First subfield

Second subfield Third subfield

VR5002 adjustment

(Adjust the flat part of the waveform.)

VR5003 adjustment

(Adjust the flat part of the waveform.)

VR5001 adjustment

(Adjust the flat part of the

waveform in the third subfield.)

1-8 (No.YA013C)

4.1.6 ADJUSTMENT FOR THE ALIMINUM DIE-CAST TYPE

(1) Connect an oscilloscope to the TP OUT4.

(2) Carry out the adjustment from the Step1 through 4 in order.

VR5003 VR5002

VR5001

TP VSCH Step1. VR5004 adjustment

TEST POINT TP Vsch

DC voltmeter 40 V

Step2. VR5003 adjustment

TEST POINT TP OUT4

Oscilloscope 10 us

Step3. VR5002 adjustment

TEST POINT TP OUT4

Oscilloscope 10 us

Step4. VR5001 adjustment

TEST POINT TP OUT4

Oscilloscope 15 us

(No.YA013C)1-9

4.1.7 ADJUSTMENT FOR THE ALIMINUM PRESS PLATE-A TYPE [PANEL SERIAL 1213 xxxx xxxx]

(1) Connect an oscilloscope to the TP OUT4.

(2) Carry out the adjustment from the Step1 through 4 in order.

VR5001

VR5003 VR5002

Step1. VR5004 adjustment

TEST POINT TP Vsch

DC voltmeter 40 V

Step2. VR5003 adjustment

TEST POINT TP OUT4

Oscilloscope 10 us

Step3. VR5002 adjustment

TEST POINT TP OUT4

Oscilloscope 10 us

Step4. VR5001 adjustment

TEST POINT TP OUT4

Oscilloscope 15 us

TP VSCH

1-10 (No.YA013C)

4.1.8 ADJUSTMENT FOR THE ALIMINUM PRESS PLATE-B TYPE [PANEL SERIAL 1223 xxxx xxxx]

(1) Connect an oscilloscope to the TP OUT4.

(2) Carry out the adjustment from the Step1 through 4 in order.

VR5001

VR5003 VR5002

Step1. VR5004 adjustment

TEST POINT TP Vsch

DC voltmeter 40 V

Step2. VR5003 adjustment

TEST POINT TP OUT4

Oscilloscope 10 us

Step3. VR5002 adjustment

TEST POINT TP OUT4

Oscilloscope 10 us

Step4. VR5001 adjustment

TEST POINT TP OUT4

Oscilloscope 15 us

TP VSCH

(There is nothing written on the PWB)

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