Panasonic Viera TH-42PX7A, Service Manual

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1 Applicable signals 5
2 Safety Precautions 6
2.1. General Guidelines 6
2.2. Touch-Current Check 6
3 Prevention of Electrostatic Discharge (ESD) to
Electrostatically Sensitive (ES) Devices 7
4 About lead free solder (PbF) 8
5 Service Hint 9
6 Plasma panel replacement method 10
6.1. Remove the rear cover 10
6.2. Remove the rear terminal cover 10
6.3. Remove the P-Board 10
6.4. Remove the Tuner unit 10
6.5. Remove the DG-Board 10
6.6. Remove the D-Board 11
6.7. Remove the SU-Board 11
6.8. Remove the SD-Board 11
6.9. Remove the SC-Board 11
6.10. Remove the SS-Board 12
6.11. Remove the stand brackets 12
6.12. Remove the C1-Board 12
6.13. Remove the C2-Board 12
6.14. Remove the speaker L, R 12
6.15. Remove the S-Board 13
6.16. Remove the K-Board 13
6.17. Remove the Plasma panel section from the Cabinet assy
(glass) 13
6.18. Replace the plasma panel (finished) 14
7 Caution statement 15
7.1. Caution statement. 15
8 Location of Lead Wiring 16
8.1. Lead of Wiring (1) 16
8.2. Lead of Wiring (2) 17
8.3. Lead of Wiring (3) 18
9 Self-check Function 19
9.1. Check of the IIC bus lines 19
9.2. Power LED Blinking timing chart 20
9.3. No Power 21
9.4. No Picture 22
9.5. Local screen failure 23
10 Service Mode 24
10.1. How to enter into Service Mode 24
10.2. Service tool mode 26
11 Adjustment Procedure 27
11.1. Driver Set-up 27
11.2. Initialization Pulse Adjust 28
11.3. P.C.B. (Printed Circuit Board) exchange 28
11.4. Adjustment Volume Location 29
11.5. Test Point Location 29
12 Adjustment 30
12.1. Sub-Contrast adjustment 30
12.2. PAL panel white balance adjustment 31
12.3. HD white balance adjustment 32
13 Hotel mode 33
14 Conductor Views 35
14.1. P-Board 35
14.2. DG-Board 38
14.3. D-Board 41
14.4. C1-Board 43
14.5. C2-Board 44
14.6. SC-Board 45
14.7. SU-Board 48
14.8. SD-Board 49
14.9. SS-Board 50
14.10. K, and S-Board 52
15 Schematic and Block Diagram 53
15.1. Schematic Diagram Note 53
15.2. Main Block Diagram 54
15.3. P-Board Block Diagram 55
15.4. P-Board (1 of 6) Schematic Diagram 56
15.5. P-Board (2 of 6) Schematic Diagram 57
15.6. P-Board (3 of 6) Schematic Diagram 58
15.7. P-Board (4 of 6) Schematic Diagram 59
15.8. P-Board (5 of 6) Schematic Diagram 60
15.9. P-Board (6 of 6) Schematic Diagram 61
15.10. DG-Board (1 of 4) Block Diagram 62
15.11. DG-Board (2 of 4) Block Diagram 63
15.12. DG-Board (3 of 4) Block Diagram 64
15.13. DG-Board (4 of 4) Block Diagram 65
15.14. DG-Board (1 of 16) Schematic Diagram 66
15.15. DG-Board (2 of 16) Schematic Diagram 67
15.16. DG-Board (3 of 16) Schematic Diagram 68
15.17. DG-Board (4 of 16) Schematic Diagram 69
15.18. DG-Board (5 of 16) Schematic Diagram 70
15.19. DG-Board (6 of 16) Schematic Diagram 71
15.20. DG-Board (7 of 16) Schematic Diagram 72
Note:
· · · · Design and Specifications are subject to change without notice. Weight and Dimensions shown are approximate.
CONTENTS
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TH-42PX7A / TH-42PV7AZ / TH-42PV7HS / TH-42PV7M / TH-42PV7MR