Table Of Contents - Panasonic TC-L42U30 Service Manual

TABLE OF CONTENTS

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. PCB Layout --------------------------------------------------6
3.2. Applicable signals ------------------------------------------6
4 Specifications ------------------------------------------------------7
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
6 Troubleshooting Guide---------------------------------------- 15
6.1. Check of the IIC bus lines------------------------------ 15
6.2. Power LED Blinking timing chart --------------------- 16
6.3. LCD Panel test mode ----------------------------------- 16
7 Disassembly and Assembly Instructions --------------- 17
7.1. Pedestal ---------------------------------------------------- 17
7.2. Rear cover ------------------------------------------------- 17
7.3. AC cord ----------------------------------------------------- 17
7.4. P-Board ----------------------------------------------------- 18
7.5. Side AV bracket------------------------------------------- 18
7.6. A-Board ----------------------------------------------------- 18
7.7. Control panel comp -------------------------------------- 19
7.8. Speaker unit ---------------------------------------------- 19
7.9. Metal bracket right --------------------------------------- 19
7.10. VESA metal and Metal vertical bracket------------- 19
7.11. A-Board bracket ------------------------------------------ 20
7.12. Metal bracket top ----------------------------------------- 20
7.13. Metal bracket bottom and Metal bracket
bottom center---------------------------------------------- 20
7.14. Barrier ------------------------------------------------------- 20
7.15. TC-Board --------------------------------------------------- 20
7.16. LCD Top MTG and LCD side MTG ------------------ 21
7.17. LCD Panel ------------------------------------------------- 21
7.18. KA-Board --------------------------------------------------- 21
7.19. EMI processing ------------------------------------------- 22
8 Measurements and Adjustments -------------------------- 34
8.1. VCOM Adjustment (Flicker Adjustment) ----------- 34
8.2. Voltage chart of A-board-------------------------------- 35
8.3. Picture level adjustment (RF) ------------------------- 35
9 Block Diagram --------------------------------------------------- 37
9.1. Main Block Diagram ------------------------------------- 37
9.2. Block (1/3) Diagram ------------------------------------- 38
9.3. Block (2/3) Diagram ------------------------------------- 39
9.4. Block (3/3) Diagram ------------------------------------- 40
10 Wiring Connection Diagram --------------------------------- 41
10.1. Caution statement.--------------------------------------- 41
10.2. Wiring ------------------------------------------------------- 41
11 Schematic Diagram--------------------------------------------- 43
11.1. Schematic Diagram Note ------------------------------ 43
11.2. Replacement Parts List Note-------------------------- 43
11.3. A-Board (1/8) Schematic Diagram ------------------- 44
11.4. A-Board (2/8) Schematic Diagram ------------------- 45
11.5. A-Board (3/8) Schematic Diagram ------------------- 46
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11.6. A-Board (4/8) Schematic Diagram ------------------ 47
11.7. A-Board (5/8) Schematic Diagram ------------------ 48
11.8. A-Board (6/8) Schematic Diagram ------------------ 49
11.9. A-Board (7/8) Schematic Diagram ------------------ 50
11.10. A-Board (8/8) and KA-Board Schematic
Diagram ---------------------------------------------------- 51
11.11. TC-Board (1/3) Schematic Diagram ---------------- 52
11.12. TC-Board (2/3) Schematic Diagram ---------------- 53
11.13. TC-Board (3/3) Schematic Diagram ---------------- 54
12 Printed Circuit Board------------------------------------------ 55
12.1. A-Board ---------------------------------------------------- 55
12.2. KA-Board -------------------------------------------------- 57
12.3. TC-Board -------------------------------------------------- 58
13 Exploded View--------------------------------------------------- 59
13.1. Exploded View-------------------------------------------- 59
13.2. Electrical Replacement Parts List ------------------- 61
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