Panasonic TH-42PX50UA User manual

1 Parts Change Notice 2
1.1. Mechanical Replacement Parts List 2
1.2. Electrical Replacement Parts List 2
1.3. Interchangeability for CIRCUIT BOARD P 2
2 Note 3
2.1. TH-42PX50UA 3
2.2. TH-42PX500UA 3
3 Adjustment Procedure 4
3.1. Driver Set-up 4
3.2. Initialization Pulse Adjust 5
3.3. P.C.B. (Printed Circuit Board) exchange 6
3.4. Adjustment Volume Location 6
3.5. Test Point Location 7
4 Conductor Views 9
©2005 Matsushita Electric Industrial Co., Ltd. All
rights reserved. Unauthorized copying and
distribution is a violation of law.
TH-42PX50UA
TH-42PX500UA
4.1. P-Board 9
5 Block and Schematic Diagrams 13
5.1. Schematic Diagram Notes 13
5.2. P-Board Block Diagram 14
5.3. P-Board (1 of 6) Schematic Diagram 15
5.4. P-Board (2 of 6) Schematic Diagram 16
5.5. P-Board (3 of 6) Schematic Diagram 17
5.6. P-Board (4 of 6) Schematic Diagram 18
5.7. P-Board (5 of 6) Schematic Diagram 19
5.8. P-Board (6 of 6) Schematic Diagram 20
6 Replacement Parts List (P-board) 21
6.1. Replacement Parts List Notes 21
6.2. Replacement Parts List (P-board) 22
7 Schematic Diagram for printing with A4 27
Digital High Definition Plasma Television
Subject : Change P-board
Please file and use this manual together with the service manual for Model No
TH-42PX50U (Main), ORDER NO. ITD0503013CE
TH-42PX500U (Main), ORDER NO. MTNC050632C1
CONTENTS
Page Page
ORDER NO. ITD0510061SE
B19Canada :B07

1 Parts Change Notice
1.1. Mechanical Replacement Parts List
TH-42PX50UA
Ref. No. TH-42PX50U
(Original Parts No.) TH-42PX50UA (New Parts No.) Parts name & Description Remarks
29 TTUA1149 TTUA1328 REAR COVER Model Name Plate is
different only.
TH-42PX500UA
Ref. No. TH-42PX500U
(Original Parts No.) TH-42PX500UA (New Parts No.) Parts name & Description Remarks
39 TTUA1172 TTUA1329 REAR COVER Model Name Plate is
different only.
1.2. Electrical Replacement Parts List
Ref. No. TH-42PX50U
TH-42PX500U
(Original Parts No.)
TH-42PX50UA
TH-42PX500UA
(New Parts No.)
Parts name & Description Remarks
F603 K5D102BNA007 --- TIME LAG FUSE HIGH
F601, 602 K5D103BMA001 --- TIME LAG FUSE HIGH
F401, 402 --- K5D802BNA005 TIME LAG FUSE HIGH
RTL ETXMM563MDK TNPA3724AB CIRCUIT BOARD P CHAP.1.3.
1.3. Interchangeability for CIRCUIT BOARD P
Using the original P-board for early or late production set is recomended when boad exchanging.
Interchangeability Code
**The circled item indicates the interchangeability.
Parts Model
OA Original
New TH-42PX50U/500U TH-42PX50UA/500UA Original or new P-board may be used in early or late production set. Keep stock the original P-board and use the original for early or late production set. Stock
new parts is not required.
2
TH-42PX50UA / TH-42PX500UA

2 Note
2.1. TH-42PX50UA
1.Model number is indication in rear cover is only "TH-42PX50U " only in rear cover as shown in figure.
2.TH-42PX50U was discontinued and TH-42PX50U was introduced from NOV/2005.
2.2. TH-42PX500UA
1.Model number is indication in rear cover is only "TH-42PX500U " only in rear cover as shown in figure.
2.TH-42PX500U was discontinued and TH-42PX500U was introduced from NOV/2005.
3
TH-42PX50U / TH-42PX500U

3.1. Driver Set-up
3.1.1. Item / Preparation
1.Input a white signal of the RGB signal generator.
2.Set the picture controls: -
Picture menu: Standard
Color temperature: Middle
Picture: 25
Aspect: Full
Caution
1.First perform Vsus adjustment.
2.Confirmation of Vscn voltage should be performed after
confirmation of Vad adjustment.
When Vad=-90V, Voltage of Vscn is 30V ±3V.
3.1.2. Adjustments
Adjust driver section voltages referring the panel data on the
panel data label.
Name Test Point Voltage Volume Remarks
Vsus TPVSUS
(SS) Vsus ± 2V VR351 (P) *
Ve TPVE (SS) Ve ± 2V VR6145 (SS) *
Vset TPVSET
(SC) 240V ± 7V Fixed
Vad TPVAD (SC) -105V ± 1V VR6477
(SC)
Vscn TPVSCN
(SC) Vad+130V ± 4V Fixed
Vda TPVDA (SS) 70V ± 1V VR352 (P)
PFC C446 (+)(-) 395V ± 0.5V R443 (P)
Vlow C555 (+)(-) 73V ± 0.1V R661 (P) Vda load
current :
0.4A
Csus TPVSUS
(SS) 178V ± 0.5V R671 (P) Vsus load current :
1.7A
*See the Panel label.
3 Adjustment Procedure
4
TH-42PX50U / TH-42PX500U

3.2. Initialization Pulse Adjust
1.Input the White signal to plasma video input.
2.Set the picture controls as follows.
· Picture menu: Standard
· Color temperature : Middle
· Picture : 25
3.Connect Oscilloscope to TPSC1 (T1) and check for 15±10µ Sec.
4.Connect Oscilloscope to TPSC1 (T2) and adjust R6557 for 184+5µ /-10µ Sec.
Test point Volume Level
T1 TPSC1 (SC) --- 15 ± 10µ Sec
T2 TPSC1 (SC) R6557 (SC) 184 + 5µ / - 10µ Sec
5
TH-42PX50U / TH-42PX500U

3.3. P.C.B. (Printed Circuit Board) exchange
3.3.1. Caution
1.To remove P.C.B. , wait 1 minute after power was off for discharge from electrolysis capacitors.
3.3.2. Quick adjustment after P.C.B. exchange
P.C.B. Name Test Point Voltage Volume Remarks
P Board Vsus TPVSUS (SS) Vsus ± 2V VR351 (P) *
Vda TPVDA (SS) 70V ± 1V VR352 (P)
PFC C446 (+) (-) (P) 395V ± 0.5V R443 (P)
Vlow C555 (+) (-) (P) 73V ± 0.1V R661 (P) Vda load current : 0.4A
Csus TPVSUS (SS) 178V ± 0.5V R671 (P) Vsus load current : 1.7A
SC Board Vad TPVAD (SC) -105V ± 1V VR6477 (SC)
SS Board Ve TPVE (SS) Ve ± 2V VR6145 (SS) *
D, DG Board White blance, Pedestal and Sub brightness for NTSC, PAL, HD, PC and 625i signals
*See the Panel label.
Caution:
Absolutely do not reduce Vsus below Ve not to damage the P.C.B.
3.4. Adjustment Volume Location
6
TH-42PX50U / TH-42PX500U

3.5. Test Point Location
7
TH-42PX50U / TH-42PX500U

8
TH-42PX50U / TH-42PX500U

4 Conductor Views
4.1. P-Board
A
1
3
5
2
4
6
C E GIBDFH
P-BOARD (FOIL SIDE)
TNPA3724AB
TH-42PX50U
TH-42PX500U
P-BOARD TNPA3724AB
TH-42PX50U
TH-42PX500U
P-BOARD TNPA3724AB
TH-42PX50U / TH-42PX500U
9

TH-42PX50U
TH-42PX500U
P-BOARD PARTS LOCATION
TH-42PX50U
TH-42PX500U
P-BOARD PARTS LOCATION
Parts Location
P-BOARD (COMPONENT SIDE)
IC406 F-1
IC503 C-4
IC504 C-5
IC509 F-5
IC512 E-6
IC
Q404 G-1
Q406 G-2
Q412 F-3
Q413 F-3
Q430 B-3
Q431 D-3
Q432 C-3
Q434 B-4
Q436 B-4
Q505 F-5
Q507 G-5
Q518 D-4
Q519 C-5
Q527 F-5
TRANSISTOR
Parts Location
P-BOARD (FOIL SIDE)
IC401 G-4
IC402 F-3
IC403 F-4
IC404 F-4
IC406 D-1
IC407 G-4
IC408 G-4
IC409 G-4
IC411 F-3
IC412 G-4
IC501 G-5
IC502 G-5
IC503 F-4
IC504 F-5
IC505 D-5
IC506 C-5
IC507 H-5
IC509 C-5
IC512 D-5
IC520 E-4
IC
Q401 F-4
Q403 F-4
Q404 B-1
Q406 C-2
Q407 C-1
Q408 C-3
Q409 C-3
Q412 C-3
Q413 C-3
Q414 G-4
Q415 G-4
Q417 F-3
Q418 F-3
Q420 D-1
Q421 F-3
Q422 D-1
Q423 H-4
Q424 G-4
Q430 G-3
Q431 E-3
Q432 G-3
Q433 G-4
Q434 G-4
Q435 H-4
Q436 G-4
Q438 G-4
Q439 E-2
Q440 E-2
Q441 G-4
Q501 H-5
Q502 H-5
Q503 H-5
Q505 D-5
Q506 B-5
Q507 B-5
Q508 E-5
Q509 E-5
Q510 E-5
Q511 F-4
Q512 F-5
Q516 E-5
Q517 D-4
Q518 F-4
Q519 F-5
Q520 D-4
Q525 C-5
TRANSISTOR Q527 D-5
Q530 C-5
Q535 H-5
Q536 F-5
Q537 G-6
Q538 G-6
Q541 E-5
Q544 H-5
Q550 G-5
Q551 G-5
Q552 G-5
Q553 E-5
Q554 E-5
Q557 G-5
Q558 F-5
Q559 G-5
Q560 F-5
Q561 G-5
Q562 F-5
Q564 F-5
Q565 G-4
Q567 F-5
PP
TH-42PX50U TH-42PX500U
TH-42PX50U / TH-42PX500U
10