JVC PD-42D30ES, PD-42D30ES/A Service Manual

SERVICE MANUAL

PDP COLOUR TELEVISION

PD-42D30ES

PD-42D30ES/A

Supplementary

BASIC CHASSIS

MK

These models corresponded to the printed circuit board exchange in the PDP panel. Therefore, this service manual describes only the information relevant to it.

For details other than those described in this manual, please refer to the PD-42D30ES service manual (No.52090 2003/03), PD-42D30ES/A service manual (No.52090B 2003/06).

TABLE OF CONTENTS

1.CONFIRMING THE MODEL NAME, SERIAL NUMBER, ID NUMBER, AND CODE NUMBER 2

2.MAIN PARTS LOCATION 2

3.INSPECTION OF COMPONENTS ON THE PW BOARD 3

4.DISASSEMBLY PROCEDURE 6

5.CONFIRMING REFERENCE VOLTAGE 8

6.ADJUSTMENTS 9

7.PARTS LIST 10

NOTES AT THE TIME OF PW BOARD EXCHANGE

It will become the cause of failure if dust adheres to the inside of a connector, or a flat wire and a point-of-contact part.

When the PW board is exchanged, be careful of the dust and dirt of the inside of a connector, or a flat wire and a point-of-contact part enough.

COPYRIGHT © 2004 Victor Company of Japan, Limited

No.52090C

2004/6

■CONFIRMING MODEL NAME, SERIAL NUMBER, ID NUMBER AND CODE

NUMBER

NOTE : The panel's ID number is used when you reference the characteristic voltage value of the panel on web site.

PANEL ID No. 212211041621

(12 figures)

Voltage and CODE No.

	SERIAL NO.	Model name and serial No.
	211200192	NEC NP42D2MF01AA
	Vd=65V	211200192
	Vs=190.1V	*******************
	CODE AA-01	*******************
	For example	*******************
		For example
	CODE : AA
		Model : NP42D2MF01AA
		Serial No. : 211200192 (9 figures)

■MAIN PARTS LOCATION

		SCAN RELAY PWB(upper)
	COMMON PWB		Flexible cable
			Scan-side A
	Flexible cable	COMMON BRANCH PWB	Flexible cable
	Common-side A	HIGH VOLTAGE
			Scan-side B
	Flexible cable	PWB
	Common-side B

Flexible cable	DIGITAL PWB
Common-side C

SIGNAL RELAY PWB(left)	SIGNAL RELAY PWB(right)
	Heat-sink
A B C D E F G	H I J K L M N O P

Flexible cable

Scan-side C

Flexible cable Scan-side D

SCAN RELAY

PWB(lower)

2(No.52090C)

R6

OK: Approx. 2.2Ω NG: Open

R20

OK: Approx. 10Ω NG: Open

R10

OK: Approx. 2.2Ω NG: Open

■INSPECTION OF COMPONENTS ON THE PW BOARD

Diagnose the PW board in PDP unit by checking defects based on the following items.

1. Inspection of fuses

Measure the resistance of each fuse with a circuit tester, and check OK or NG.

1.1 Glass fuses (F301, F302) on the HIGH VOLTAGE PWB

1.2 Chip fuse (FU801) on the DIGITAL PWB

301

302

OK: Short	OK: Short
NG: Open	NG: Open
	801

1.3 Fuse resistances (R10, R4, R6) and chip fuse (R20) on the HIGH VOLTAGE PWB

	R4		R4
	R10	R20	OK: Approx. 2.2Ω
			NG: Open

R6

1.5 Fuse resistance (R1) on the HIGH VOLTAGE PWB

	R1
	OK: Approx. 2.2Ω
R1	NG: Open

1.7 Fuse resistance (R90) on the HIGH VOLTAGE PWB

1.4Fuse resistances (R7, R3) and chip fuse (R9) on the HIGH VOLTAGE PWB

R7

	R3	OK: Approx. 2.2Ω
		NG: Open
		R3
		OK: Approx. 2.2Ω
R7		NG: Open

R9

R9 OK: Approx. 10Ω

NG: Open

1.6 Fuse resistance (R2) on the HIGH VOLTAGE PWB

R2

R2 OK: Approx. 2.2Ω

NG: Open

	R90
	OK: Approx. 2.2Ω
R90	NG: Open

(No.52090C)3

2. Inspection of data ICs

According to the following procedures, measure with a circuit tester and check OK or NG.

Check the pin 1 or pin 2 of the connector [CN12] on the SIGNAL RELAY PWB (right).

OK: Open

NG: Short

Detach the connector [CN12] on the SIGNAL RELAY PWB (right) and check the conduction between the pin 1 (or pin 2) and the ground.

In case of "short", one of the data ICs connecting the SIGNAL RELAY PWB may be defective, and you should check whether there is any trace of damage on the data IC's surface after removing the heat-sink on the data IC.

3. Inspection of power IC

According to the following procedures, measure with a circuit tester and check OK or NG.

The allocation of power IC to be checked is shown below.

HIGHT VOLTAGE PWB

PH2203F

4(No.52090C)