TX-P42X20B, TX-P42X20E, TX-P42X20L, TX-P42X25E, TX-P42X25ES, TX-PF42X20 - Panasonic Plasma Service Manual (repair manual). Page 2

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TABLE OF CONTENTS
PAGE
PAGE
1 Safety Precautions -----------------------------------------------3
1.1. General Guidelines ----------------------------------------3
1.2. Touch-Current Check--------------------------------------3
2 Warning --------------------------------------------------------------4
2.1. Prevention of Electrostatic Discharge (ESD)
to Electrostatically Sensitive (ES) Devices ----------4
2.2. About lead free solder (PbF) ----------------------------5
3 Service Navigation------------------------------------------------6
3.1. PCB Layout--------------------------------------------------6
3.2. Applicable signals------------------------------------------7
4 Specifications ------------------------------------------------------8
5 Technical Descriptions
---------------------------------------- 10
5.1. Specification of KEY for CI Plus, DTCP-IP and
One-to-One ------------------------------------------------ 10
6 Service Mode ----------------------------------------------------- 11
6.1. How to enter into Service Mode ---------------------- 11
6.2. Option - Mirror--------------------------------------------- 13
6.3. Service tool mode---------------------------------------- 13
6.4. Hotel mode------------------------------------------------- 14
6.5. Data Copy by SD Card --------------------------------- 15
7 Troubleshooting Guide---------------------------------------- 18
7.1. Check of the IIC bus lines------------------------------ 18
7.2. Power LED Blinking timing chart --------------------- 19
7.3. No Power--------------------------------------------------- 20
7.4. No Picture -------------------------------------------------- 21
7.5. Local screen failure-------------------------------------- 22
8 Disassembly and Assembly Instructions--------------- 23
8.1. Remove the Rear cover -------------------------------- 23
8.2. Remove the AC inlet ------------------------------------ 23
8.3. Remove the P-Board------------------------------------ 23
8.4. Remove the Side terminal cover and Side
shield metal ------------------------------------------------ 23
8.5. Remove the Tuner unit --------------------------------- 24
8.6. Remove the A-Board------------------------------------ 24
8.7. Remove the Speakers ---------------------------------- 24
8.8. Remove the SN-Board---------------------------------- 24
8.9. Remove the SS-Board---------------------------------- 25
8.10. Remove the Hanger metals and the Stand
brackets----------------------------------------------------- 25
8.11. Remove the C1-Board ---------------------------------- 25
8.12. Remove the C2-Board ---------------------------------- 25
8.13. Remove the Plasma panel section from the
Cabinet assy (glass)------------------------------------- 26
8.14. Remove the Glass holders ---------------------------- 26
8.15. Remove the K-Board------------------------------------ 26
8.16. Replace the plasma panel ----------------------------- 27
9 Measurements and Adjustments -------------------------- 28
9.1. Adjustment------------------------------------------------- 28
10 Block Diagram --------------------------------------------------- 33
10.1. Main Block Diagram ------------------------------------- 33
10.2. Block (1/4) Diagram ------------------------------------- 34
10.3. Block (2/4) Diagram ------------------------------------- 35
10.4. Block (3/4) Diagram ------------------------------------- 36
10.5. Block (4/4) Diagram ------------------------------------- 37
11 Wiring Connection Diagram --------------------------------- 39
11.1. Caution statement.--------------------------------------- 39
11.2. Wiring (1) --------------------------------------------------- 39
11.3. Wiring (2) --------------------------------------------------- 39
11.4. Wiring (3) -------------------------------------------------- 40
12 Schematic Diagram -------------------------------------------- 41
12.1. Schematic Diagram Note ------------------------------ 41
12.2. P-Board (1/4) Schematic Diagram ------------------ 42
12.3. P-Board (2/4) Schematic Diagram ------------------ 43
12.4. P-Board (3/4) Schematic Diagram ------------------ 44
12.5. P-Board (4/4) Schematic Diagram ------------------ 45
12.6. A-Board (1/19) Schematic Diagram----------------- 46
12.7. A-Board (2/19) Schematic Diagram----------------- 47
12.8. A-Board (3/19) Schematic Diagram----------------- 48
12.9. A-Board (4/19) Schematic Diagram----------------- 49
12.10. A-Board (5/19) Schematic Diagram----------------- 50
12.11. A-Board (6/19) Schematic Diagram----------------- 51
12.12. A-Board (7/19) Schematic Diagram----------------- 52
12.13. A-Board (8/19) Schematic Diagram----------------- 53
12.14. A-Board (9/19) Schematic Diagram----------------- 54
12.15. A-Board (10/19) Schematic Diagram --------------- 55
12.16. A-Board (11/19) Schematic Diagram --------------- 56
12.17. A-Board (12/19) Schematic Diagram --------------- 57
12.18. A-Board (13/19) Schematic Diagram --------------- 58
12.19. A-Board (14/19) Schematic Diagram --------------- 59
12.20. A-Board (15/19) Schematic Diagram --------------- 60
12.21. A-Board (16/19) Schematic Diagram --------------- 61
12.22. A-Board (17/19) and K-Board Schematic
Diagram ---------------------------------------------------- 62
12.23. A-Board (18/19) Schematic Diagram --------------- 63
12.24. A-Board (19/19) Schematic Diagram --------------- 64
12.25. C1-Board Schematic Diagram ----------------------- 65
12.26. C2-Board Schematic Diagram ----------------------- 66
12.27. SN-Board (1/9) Schematic Diagram ---------------- 67
12.28. SN-Board (2/9) Schematic Diagram ---------------- 68
12.29. SN-Board (3/9) Schematic Diagram ---------------- 69
12.30. SN-Board (4/9) Schematic Diagram ---------------- 70
12.31. SN-Board (5/9) Schematic Diagram ---------------- 71
12.32. SN-Board (6/9) Schematic Diagram ---------------- 72
12.33. SN-Board (7/9) Schematic Diagram ---------------- 73
12.34. SN-Board (8/9) Schematic Diagram ---------------- 74
12.35. SN-Board (9/9) Schematic Diagram ---------------- 75
12.36. SS-Board (1/2) Schematic Diagram ---------------- 76
12.37. SS-Board (2/2) Schematic Diagram ---------------- 77
13 Printed Circuit Board------------------------------------------ 78
13.1. P-Board ---------------------------------------------------- 78
13.2. K-Board ---------------------------------------------------- 81
13.3. A-Board ---------------------------------------------------- 82
13.4. C1-Board--------------------------------------------------- 84
13.5. C2-Board--------------------------------------------------- 85
13.6. SN-Board -------------------------------------------------- 86
13.7. SS-Board -------------------------------------------------- 88
14 Exploded View and Replacement Parts List----------- 91
14.1. Exploded View and Mechanical Replacement
Parts List --------------------------------------------------- 91
14.2. Electrical Replacement Parts List ------------------- 99
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