Table Of Contents - Panasonic TC-L42U12 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. Service Hint--------------------------------------------------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 ---------------------------------------------------9
5.3. Hotel mode------------------------------------------------- 10
6 Troubleshooting Guide---------------------------------------- 11
6.1. Check of the IIC bus lines------------------------------ 11
6.2. Power LED Blinking timing chart --------------------- 12
6.3. No Power--------------------------------------------------- 13
7 Disassembly and Assembly Instructions --------------- 14
7.1. Pedestal assy --------------------------------------------- 14
7.2. Rear cover ------------------------------------------------- 14
7.3. AC cord and Rear center cover ---------------------- 14
7.4. P-Board ----------------------------------------------------- 14
7.5. Side AV bracket------------------------------------------- 15
7.6. A-Board ----------------------------------------------------- 15
7.7. Control panel ---------------------------------------------- 15
7.8. Speaker ----------------------------------------------------- 15
7.9. Chassis frame assy-------------------------------------- 16
7.10. VESA rail assy -------------------------------------------- 16
7.11. LCD TOP MTG ------------------------------------------- 16
7.12. LCD BTM MTG ------------------------------------------- 17
7.13. LCD Panel ------------------------------------------------- 17
7.14. V-Board ----------------------------------------------------- 17
7.15. EMI processing ------------------------------------------- 18
8 Measurements and Adjustments -------------------------- 19
8.1. Voltage chart of P-board-------------------------------- 19
8.2. Voltage chart of A-board-------------------------------- 19
8.3. Picture level adjustment (RF) ------------------------- 20
8.4. Picture level adjustment (VIDEO) -------------------- 20
8.5. Picture level adjustment (YUV) ----------------------- 20
9 Block Diagram --------------------------------------------------- 21
9.1. Main Block Diagram ------------------------------------- 21
9.2. Block (1/2) Diagram ------------------------------------- 22
9.3. Block (2/2) Diagram ------------------------------------- 23
10 Wiring Connection Diagram --------------------------------- 25
10.1. Caution statement.--------------------------------------- 25
10.2. Wiring ------------------------------------------------------- 25
11 Schematic Diagram--------------------------------------------- 27
11.1. Schematic Diagram Notes ----------------------------- 27
11.2. A-Board (1/11) Schematic Diagram ----------------- 28
11.3. A-Board (2/11) Schematic Diagram ----------------- 29
11.4. A-Board (3/11) Schematic Diagram ----------------- 30
11.5. A-Board (4/11) Schematic Diagram ----------------- 31
11.6. A-Board (5/11) Schematic Diagram ----------------- 32
11.7. A-Board (6/11) Schematic Diagram ----------------- 33
11.8. A-Board (7/11) Schematic Diagram ----------------- 34
11.9. A-Board (8/11) Schematic Diagram ----------------- 35
11.10. A-Board (9/11) Schematic Diagram ----------------- 36
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11.11. A-Board (10/11) Schematic Diagram --------------- 37
11.12. A-Board (11/11) Schematic Diagram --------------- 38
11.13. V-Board Schematic Diagram ------------------------- 39
12 Printed Circuit Board------------------------------------------ 40
12.1. A-Board ---------------------------------------------------- 40
12.2. V-Board----------------------------------------------------- 43
13 Exploded View and Replacement Parts List----------- 45
13.1. Exploded View and Mechanical Replacement
Parts List --------------------------------------------------- 45
13.2. Electrical Replacement Parts List ------------------- 49
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