Panasonic la03 tc-l42u25 Service Manual
2
TABLE OF CONTENTS
PAGE
PAGE
1 Safety Precautions -----------------------------------------------3
1.1. General Guidelines ----------------------------------------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. Service Hint--------------------------------------------------6
3.2. Applicable signals ------------------------------------------6
3.2. Applicable signals ------------------------------------------6
4 Specifications ------------------------------------------------------7
5 Service Mode -------------------------------------------------------8
5 Service Mode -------------------------------------------------------8
5.1. How to enter into Service Mode ------------------------8
5.2. SRV-TOOL------------------------------------------------- 10
5.3. Hotel mode------------------------------------------------- 11
5.4. Data Copy by SD Card --------------------------------- 12
5.2. SRV-TOOL------------------------------------------------- 10
5.3. Hotel mode------------------------------------------------- 11
5.4. Data Copy by SD Card --------------------------------- 12
6 Troubleshooting Guide---------------------------------------- 15
6.1. Check of the IIC bus lines------------------------------ 15
6.2. Power LED Blinking timing chart --------------------- 16
6.3. No Power--------------------------------------------------- 17
6.2. Power LED Blinking timing chart --------------------- 16
6.3. No Power--------------------------------------------------- 17
7 Disassembly and Assembly Instructions --------------- 18
7.1. Pedestal ---------------------------------------------------- 18
7.2. Rear cover ------------------------------------------------- 18
7.3. AC cord ----------------------------------------------------- 18
7.4. P-Board ----------------------------------------------------- 18
7.5. Side AV bracket------------------------------------------- 19
7.6. A-Board ----------------------------------------------------- 19
7.7. Control panel ---------------------------------------------- 19
7.8. Speaker ----------------------------------------------------- 19
7.9. Metal bracket CH frame -------------------------------- 20
7.2. Rear cover ------------------------------------------------- 18
7.3. AC cord ----------------------------------------------------- 18
7.4. P-Board ----------------------------------------------------- 18
7.5. Side AV bracket------------------------------------------- 19
7.6. A-Board ----------------------------------------------------- 19
7.7. Control panel ---------------------------------------------- 19
7.8. Speaker ----------------------------------------------------- 19
7.9. Metal bracket CH frame -------------------------------- 20
7.10. Metal bracket P top & Metal bracket P right ------- 20
7.11. Metal bracket vertical------------------------------------ 20
7.12. Metal bracket ---------------------------------------------- 21
7.13. Barrier ------------------------------------------------------- 21
7.14. TC-Board --------------------------------------------------- 21
7.15. LCD Panel ------------------------------------------------- 22
7.16. V-Board ----------------------------------------------------- 22
7.17. EMI processing ------------------------------------------- 23
7.13. Barrier ------------------------------------------------------- 21
7.14. TC-Board --------------------------------------------------- 21
7.15. LCD Panel ------------------------------------------------- 22
7.16. V-Board ----------------------------------------------------- 22
7.17. EMI processing ------------------------------------------- 23
8 Measurements and Adjustments -------------------------- 30
8.1. VCOM Adjustment (Flicker Adjustment) ----------- 30
8.2. Voltage chart of A-board-------------------------------- 31
8.3. Picture level adjustment (RF) ------------------------- 31
8.2. Voltage chart of A-board-------------------------------- 31
8.3. Picture level adjustment (RF) ------------------------- 31
9 Block Diagram --------------------------------------------------- 33
9.1. Main Block Diagram ------------------------------------- 33
9.2. Block (1/3) Diagram ------------------------------------- 34
9.3. Block (2/3) Diagram ------------------------------------- 35
9.4. Block (3/3) Diagram ------------------------------------- 36
9.2. Block (1/3) Diagram ------------------------------------- 34
9.3. Block (2/3) Diagram ------------------------------------- 35
9.4. Block (3/3) Diagram ------------------------------------- 36
10 Wiring Connection Diagram --------------------------------- 37
10.1. Caution statement.--------------------------------------- 37
10.2. Wiring ------------------------------------------------------- 37
10.2. Wiring ------------------------------------------------------- 37
11 Schematic Diagram--------------------------------------------- 39
11.1. Schematic Diagram Notes ----------------------------- 39
11.2. A-Board (1/12) Schematic Diagram ----------------- 40
11.3. A-Board (2/12) Schematic Diagram ----------------- 41
11.4. A-Board (3/12) Schematic Diagram ----------------- 42
11.5. A-Board (4/12) Schematic Diagram ----------------- 43
11.6. A-Board (5/12) Schematic Diagram ----------------- 44
11.7. A-Board (6/12) Schematic Diagram ----------------- 45
11.8. A-Board (7/12) Schematic Diagram ----------------- 46
11.2. A-Board (1/12) Schematic Diagram ----------------- 40
11.3. A-Board (2/12) Schematic Diagram ----------------- 41
11.4. A-Board (3/12) Schematic Diagram ----------------- 42
11.5. A-Board (4/12) Schematic Diagram ----------------- 43
11.6. A-Board (5/12) Schematic Diagram ----------------- 44
11.7. A-Board (6/12) Schematic Diagram ----------------- 45
11.8. A-Board (7/12) Schematic Diagram ----------------- 46
11.9. A-Board (8/12) Schematic Diagram----------------- 47
11.10. A-Board (9/12) Schematic Diagram----------------- 48
11.11. A-Board (10/12) Schematic Diagram --------------- 49
11.12. A-Board (11/12) Schematic Diagram --------------- 50
11.13. A-Board (12/12) and V-Board Schematic
11.13. A-Board (12/12) and V-Board Schematic
Diagram ---------------------------------------------------- 51
11.14. TC-Board (1/6) Schematic Diagram ---------------- 52
11.15. TC-Board (2/6) Schematic Diagram ---------------- 53
11.16. TC-Board (3/6) Schematic Diagram ---------------- 54
11.17. TC-Board (4/6) Schematic Diagram ---------------- 55
11.18. TC-Board (5/6) Schematic Diagram ---------------- 56
11.19. TC-Board (6/6) Schematic Diagram ---------------- 57
11.15. TC-Board (2/6) Schematic Diagram ---------------- 53
11.16. TC-Board (3/6) Schematic Diagram ---------------- 54
11.17. TC-Board (4/6) Schematic Diagram ---------------- 55
11.18. TC-Board (5/6) Schematic Diagram ---------------- 56
11.19. TC-Board (6/6) Schematic Diagram ---------------- 57
12 Printed Circuit Board------------------------------------------ 58
12.1. A-Board ---------------------------------------------------- 58
12.2. V-Board----------------------------------------------------- 60
12.3. TC-Board -------------------------------------------------- 61
12.2. V-Board----------------------------------------------------- 60
12.3. TC-Board -------------------------------------------------- 61
13 Exploded View and Replacement Parts List----------- 63
13.1. Exploded View and Mechanical Replacement
Parts List --------------------------------------------------- 63
13.2. Electrical Replacement Parts List ------------------- 67