Panasonic lh90 tc-l32c12 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---------------------------------------------------9
5.3. Hotel mode------------------------------------------------- 10
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
6.2. Power LED Blinking timing chart --------------------- 12
6.3. No Power--------------------------------------------------- 13
7 Disassembly and Assembly Instructions --------------- 14
7.1. Pedestal ---------------------------------------------------- 14
7.2. Rear cover ------------------------------------------------- 14
7.3. AC cord ----------------------------------------------------- 14
7.4. P-Board ----------------------------------------------------- 15
7.5. Side AV bracket------------------------------------------- 15
7.6. A-Board ----------------------------------------------------- 15
7.7. Control panel ---------------------------------------------- 16
7.8. Speaker ----------------------------------------------------- 16
7.9. A-P-MTG Metal ------------------------------------------- 16
7.2. Rear cover ------------------------------------------------- 14
7.3. AC cord ----------------------------------------------------- 14
7.4. P-Board ----------------------------------------------------- 15
7.5. Side AV bracket------------------------------------------- 15
7.6. A-Board ----------------------------------------------------- 15
7.7. Control panel ---------------------------------------------- 16
7.8. Speaker ----------------------------------------------------- 16
7.9. A-P-MTG Metal ------------------------------------------- 16
7.10. VESA metal------------------------------------------------ 16
7.11. LCD MTG -------------------------------------------------- 17
7.12. LCD Panel ------------------------------------------------- 17
7.13. V-Board ----------------------------------------------------- 17
7.14. EMI processing ------------------------------------------- 18
7.13. V-Board ----------------------------------------------------- 17
7.14. EMI processing ------------------------------------------- 18
8 Measurements and Adjustments -------------------------- 21
8.1. Voltage chart of A-board-------------------------------- 21
8.2. Picture level adjustment (RF) ------------------------- 21
8.3. Picture level adjustment (VIDEO)-------------------- 22
8.4. Picture level adjustment (YUV) ----------------------- 22
8.2. Picture level adjustment (RF) ------------------------- 21
8.3. Picture level adjustment (VIDEO)-------------------- 22
8.4. Picture level adjustment (YUV) ----------------------- 22
9 Block Diagram --------------------------------------------------- 23
9.1. Main Block Diagram ------------------------------------- 23
9.2. Block (1/2) Diagram ------------------------------------- 24
9.3. Block (2/2) Diagram ------------------------------------- 25
9.2. Block (1/2) Diagram ------------------------------------- 24
9.3. Block (2/2) Diagram ------------------------------------- 25
10 Wiring Connection Diagram --------------------------------- 27
10.1. Caution statement.--------------------------------------- 27
10.2. Wiring ------------------------------------------------------- 27
10.2. Wiring ------------------------------------------------------- 27
11 Schematic Diagram--------------------------------------------- 29
11.1. Schematic Diagram Notes ----------------------------- 29
11.2. A-Board (1/10) Schematic Diagram ----------------- 30
11.3. A-Board (2/10) Schematic Diagram ----------------- 31
11.4. A-Board (3/10) Schematic Diagram ----------------- 32
11.5. A-Board (4/10) Schematic Diagram ----------------- 33
11.6. A-Board (5/10) Schematic Diagram ----------------- 34
11.7. A-Board (6/10) Schematic Diagram ----------------- 35
11.8. A-Board (7/10) Schematic Diagram ----------------- 36
11.9. A-Board (8/10) Schematic Diagram ----------------- 37
11.2. A-Board (1/10) Schematic Diagram ----------------- 30
11.3. A-Board (2/10) Schematic Diagram ----------------- 31
11.4. A-Board (3/10) Schematic Diagram ----------------- 32
11.5. A-Board (4/10) Schematic Diagram ----------------- 33
11.6. A-Board (5/10) Schematic Diagram ----------------- 34
11.7. A-Board (6/10) Schematic Diagram ----------------- 35
11.8. A-Board (7/10) Schematic Diagram ----------------- 36
11.9. A-Board (8/10) Schematic Diagram ----------------- 37
11.10. A-Board (9/10) Schematic Diagram ----------------- 38
11.11. A-Board (10/10) Schematic Diagram --------------- 39
11.12. V-Board Schematic Diagram -------------------------- 40
12 Printed Circuit Board------------------------------------------ 41
12.1. A-Board ---------------------------------------------------- 41
12.2. V-Board----------------------------------------------------- 44
12.2. V-Board----------------------------------------------------- 44
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