Read Panasonic TX-P42S20E / TX-P42S20ES / TX-P42S20L / TX-PF42S20 / TX-PR42S20 Service Manual online
2
TABLE OF CONTENTS
PAGE
PAGE
1 Safety Precautions -----------------------------------------------3
1.1. General Guidelines ----------------------------------------3
1.2. Touch-Current Check--------------------------------------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
3.2. Applicable signals------------------------------------------7
4 Specifications ------------------------------------------------------8
5 Technical Descriptions---------------------------------------- 10
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
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
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 Service Fixture & Tools --------------------------------------- 23
8.1. SC jig -------------------------------------------------------- 23
9 Disassembly and Assembly Instructions--------------- 24
9.1. Remove the Rear cover -------------------------------- 24
9.2. Remove the AC inlet ------------------------------------ 24
9.3. Remove the P-Board------------------------------------ 24
9.4. Remove the Side terminal cover and the Side
9.2. Remove the AC inlet ------------------------------------ 24
9.3. Remove the P-Board------------------------------------ 24
9.4. Remove the Side terminal cover and the Side
shield metal ------------------------------------------------ 24
9.5. Remove the Tuner unit --------------------------------- 25
9.6. Remove the A-Board------------------------------------ 25
9.7. Remove the Speakers ---------------------------------- 25
9.8. Remove the SM-Board --------------------------------- 25
9.9. Remove the SC-Board---------------------------------- 26
9.6. Remove the A-Board------------------------------------ 25
9.7. Remove the Speakers ---------------------------------- 25
9.8. Remove the SM-Board --------------------------------- 25
9.9. Remove the SC-Board---------------------------------- 26
9.10. Remove the SS2-Board -------------------------------- 26
9.11. Remove the SS-Board---------------------------------- 26
9.12. Remove the Hanger metals and the Stand
brackets----------------------------------------------------- 26
9.13. Remove the C1-Board ---------------------------------- 27
9.14. Remove the C2-Board ---------------------------------- 27
9.15. Remove the Plasma panel section from the
9.14. Remove the C2-Board ---------------------------------- 27
9.15. Remove the Plasma panel section from the
Cabinet assy (glass)------------------------------------- 27
9.16. Remove the Glass holders ---------------------------- 28
9.17. Remove the K-Board------------------------------------ 28
9.18. Replace the plasma panel ----------------------------- 28
9.17. Remove the K-Board------------------------------------ 28
9.18. Replace the plasma panel ----------------------------- 28
10 Measurements and Adjustments -------------------------- 29
10.1. Adjustment------------------------------------------------- 29
11 Block Diagram --------------------------------------------------- 33
11.1. Main Block Diagram ------------------------------------- 33
11.2. Block (1/4) Diagram ------------------------------------- 34
11.3. Block (2/4) Diagram ------------------------------------- 35
11.4. Block (3/4) Diagram ------------------------------------- 36
11.5. Block (4/4) Diagram ------------------------------------- 37
11.2. Block (1/4) Diagram ------------------------------------- 34
11.3. Block (2/4) Diagram ------------------------------------- 35
11.4. Block (3/4) Diagram ------------------------------------- 36
11.5. Block (4/4) Diagram ------------------------------------- 37
12 Wiring Connection Diagram -------------------------------- 39
12.1. Caution statement. -------------------------------------- 39
12.2. Wiring (1) -------------------------------------------------- 39
12.3. Wiring (2) -------------------------------------------------- 40
12.2. Wiring (1) -------------------------------------------------- 39
12.3. Wiring (2) -------------------------------------------------- 40
13 Schematic Diagram -------------------------------------------- 41
13.1. Schematic Diagram Note ------------------------------ 41
13.2. P-Board (1/4) Schematic Diagram ------------------ 42
13.3. P-Board (2/4) Schematic Diagram ------------------ 43
13.4. P-Board (3/4) Schematic Diagram ------------------ 44
13.5. P-Board (4/4) Schematic Diagram ------------------ 45
13.6. A-Board (1/19) Schematic Diagram----------------- 46
13.7. A-Board (2/19) Schematic Diagram----------------- 47
13.8. A-Board (3/19) Schematic Diagram----------------- 48
13.9. A-Board (4/19) Schematic Diagram----------------- 49
13.2. P-Board (1/4) Schematic Diagram ------------------ 42
13.3. P-Board (2/4) Schematic Diagram ------------------ 43
13.4. P-Board (3/4) Schematic Diagram ------------------ 44
13.5. P-Board (4/4) Schematic Diagram ------------------ 45
13.6. A-Board (1/19) Schematic Diagram----------------- 46
13.7. A-Board (2/19) Schematic Diagram----------------- 47
13.8. A-Board (3/19) Schematic Diagram----------------- 48
13.9. A-Board (4/19) Schematic Diagram----------------- 49
13.10. A-Board (5/19) Schematic Diagram----------------- 50
13.11. A-Board (6/19) Schematic Diagram----------------- 51
13.12. A-Board (7/19) Schematic Diagram----------------- 52
13.13. A-Board (8/19) Schematic Diagram----------------- 53
13.14. A-Board (9/19) Schematic Diagram----------------- 54
13.15. A-Board (10/19) Schematic Diagram --------------- 55
13.16. A-Board (11/19) Schematic Diagram --------------- 56
13.17. A-Board (12/19) Schematic Diagram --------------- 57
13.18. A-Board (13/19) Schematic Diagram --------------- 58
13.19. A-Board (14/19) Schematic Diagram --------------- 59
13.20. A-Board (15/19) Schematic Diagram --------------- 60
13.21. A-Board (16/19) Schematic Diagram --------------- 61
13.22. A-Board (17/19) and K-Board Schematic
13.13. A-Board (8/19) Schematic Diagram----------------- 53
13.14. A-Board (9/19) Schematic Diagram----------------- 54
13.15. A-Board (10/19) Schematic Diagram --------------- 55
13.16. A-Board (11/19) Schematic Diagram --------------- 56
13.17. A-Board (12/19) Schematic Diagram --------------- 57
13.18. A-Board (13/19) Schematic Diagram --------------- 58
13.19. A-Board (14/19) Schematic Diagram --------------- 59
13.20. A-Board (15/19) Schematic Diagram --------------- 60
13.21. A-Board (16/19) Schematic Diagram --------------- 61
13.22. A-Board (17/19) and K-Board Schematic
Diagram ---------------------------------------------------- 62
13.23. A-Board (18/19) Schematic Diagram --------------- 63
13.24. A-Board (19/19) Schematic Diagram --------------- 64
13.25. C1-Board (1/2) Schematic Diagram ---------------- 65
13.26. C1-Board (2/2) Schematic Diagram ---------------- 66
13.27. C2-Board (1/2) Schematic Diagram ---------------- 67
13.28. C2-Board (2/2) Schematic Diagram ---------------- 68
13.29. SC-Board (1/4) Schematic Diagram ---------------- 69
13.30. SC-Board (2/4) Schematic Diagram ---------------- 70
13.31. SC-Board (3/4) Schematic Diagram ---------------- 71
13.32. SC-Board (4/4) Schematic Diagram ---------------- 72
13.33. SS-Board (1/2) Schematic Diagram ---------------- 73
13.34. SS-Board (2/2) and SS2-Board Schematic
13.24. A-Board (19/19) Schematic Diagram --------------- 64
13.25. C1-Board (1/2) Schematic Diagram ---------------- 65
13.26. C1-Board (2/2) Schematic Diagram ---------------- 66
13.27. C2-Board (1/2) Schematic Diagram ---------------- 67
13.28. C2-Board (2/2) Schematic Diagram ---------------- 68
13.29. SC-Board (1/4) Schematic Diagram ---------------- 69
13.30. SC-Board (2/4) Schematic Diagram ---------------- 70
13.31. SC-Board (3/4) Schematic Diagram ---------------- 71
13.32. SC-Board (4/4) Schematic Diagram ---------------- 72
13.33. SS-Board (1/2) Schematic Diagram ---------------- 73
13.34. SS-Board (2/2) and SS2-Board Schematic
Diagram ---------------------------------------------------- 74
14 Printed Circuit Board------------------------------------------ 75
14.1. P-Board ---------------------------------------------------- 75
14.2. K and SS2-Board --------------------------------------- 78
14.3. A-Board ---------------------------------------------------- 79
14.4. C1-Board--------------------------------------------------- 81
14.5. C2-Board--------------------------------------------------- 82
14.6. SC-Board -------------------------------------------------- 83
14.7. SS-Board -------------------------------------------------- 85
14.2. K and SS2-Board --------------------------------------- 78
14.3. A-Board ---------------------------------------------------- 79
14.4. C1-Board--------------------------------------------------- 81
14.5. C2-Board--------------------------------------------------- 82
14.6. SC-Board -------------------------------------------------- 83
14.7. SS-Board -------------------------------------------------- 85
15 Exploded View and Replacement Parts List----------- 87
15.1. Exploded View and Mechanical Replacement
Parts List --------------------------------------------------- 87
15.2. Electrical Replacement Parts List ------------------- 95
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