Panasonic TH-42PX50UA, TH-42PX500UA Schematic

Digital High Definition Plasma Television

TH-42PX50UA TH-42PX500UA

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

ORDER NO. ITD0510061SE

B19 Canada : B07

CONTENTS

Page Page

1 Parts Change Notice 2

1.1. Mechanical Replacement Parts List

1.2. Electrical Replacement Parts List

1.3. Interchangeability for CIRCUIT BOARD P

2 Note

2.1. TH-42PX50UA

2.2. TH-42PX500UA

3 Adjustment Procedure

3.1. Driver Set-up

3.2. Initialization Pulse Adjust

3.3. P.C.B. (Printed Circuit Board) exchange

3.4. Adjustment Volume Location

3.5. Test Point Location

4 Conductor Views

2 2 2

3 3

4 5 6 6 7

4.1. P-Board 9

5 Block and Schematic Diagrams

5.1. Schematic Diagram Notes

5.2. P-Board Block Diagram

5.3. P-Board (1 of 6) Schematic Diagram

5.4. P-Board (2 of 6) Schematic Diagram

5.5. P-Board (3 of 6) Schematic Diagram

5.6. P-Board (4 of 6) Schematic Diagram

5.7. P-Board (5 of 6) Schematic Diagram

5.8. P-Board (6 of 6) Schematic Diagram

6 Replacement Parts List (P-board)

6.1. Replacement Parts List Notes

6.2. Replacement Parts List (P-board)

7 Schematic Diagram for printing with A4

13 14 15 16 17 18 19 20

21 22

TH-42PX50UA / TH-42PX500UA

1 Parts Change Notice

1.1. Mechanical Replacement Parts List

TH-42PX50UA

Ref. No. TH-42PX50U

(Original Parts No.)

29 TTUA1149 TTUA1328 REAR COVER Model Name Plate is

TH-42PX500UA

Ref. No. TH-42PX500U

(Original Parts No.)

39 TTUA1172 TTUA1329 REAR COVER Model Name Plate is

1.2. Electrical Replacement Parts List

TH-42PX50UA

(New Parts No.)

TH-42PX500UA (New Parts No.)

Parts name & Description Remarks

different only.

Parts name & Description Remarks

different only.

Ref. No. TH-42PX50U

TH-42PX500U

(Original Parts No.)

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.

TH-42PX50UA TH-42PX500UA (New Parts No.)

Parts name & Description Remarks

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

O A 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 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

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.

TH-42PX50U / TH-42PX500U

3 Adjustment Procedure

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) Ve TPVE (SS) Ve ± 2V VR6145 (SS) * Vset TPVSET

(SC) Vad TPVAD (SC) -105V ± 1V VR6477

Vscn TPVSCN

(SC) Vda TPVDA (SS) 70V ± 1V VR352 (P) PFC C446 (+)(-) 395V ± 0.5V R443 (P) Vlow C555 (+)(-) 73V ± 0.1V R661 (P) Vda load

Csus TPVSUS

(SS)

*See the Panel label.

Vsus ± 2V VR351 (P) *

240V ± 7V Fixed

(SC)

Vad+130V ±4VFixed

current :

0.4A

178V ± 0.5V R671 (P) Vsus load

current :

1.7A

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

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

3.5. Test Point Location

TH-42PX50U / TH-42PX500U

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