Panasonic TH-50LFE7W, Руководство по обслуживанию

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2
TH-50LFE7U/TH-50LFE7W/TH-50LFE7E
TABLE OF CONTENTS
PAGE PAGE
1 Safety Precautions ----------------------------------------------- 3
1.1. General Guidelines ----------------------------------------3
1.2. Touch-Current Check (for TH-50LFE7U)-------------3
1.3. Touch-Current Check (for TH-50LFE7W/TH-
50LFE7E) ----------------------------------------------------4
2 Warning -------------------------------------------------------------- 5
2.1. Prevention of Electrostatic Discharge (ESD)
to Electrostatically Sensitive (ES) Devices ----------5
2.2. About lead free solder (PbF) ----------------------------6
3 Service Navigation ------------------------------------------------ 7
3.1. Service Hint--------------------------------------------------7
4 Specifications ------------------------------------------------------ 8
5 Service Mode ------------------------------------------------------- 9
5.1. CAT (Computer Aided Test) mode ---------------------9
5.2. IIC mode structure (following items value is
sample data)----------------------------------------------- 13
6 Troubleshooting Guide ---------------------------------------- 14
6.1. Self Check ------------------------------------------------- 14
6.2. No Power--------------------------------------------------- 17
6.3. No Picture -------------------------------------------------- 17
7 Disassembly and Assembly Instructions --------------- 18
7.1. PCB Layout ------------------------------------------------ 18
7.2. Preparation ------------------------------------------------ 18
7.3. About disassembly and replacement --------------- 18
7.4. Backcover Comp removal ----------------------------- 19
7.5. A-Board replacement------------------------------------ 19
7.6. P-Board replacement------------------------------------ 22
7.7. GK-Board and Key Button Bracket
replacement ----------------------------------------------- 22
7.8. Speaker Unit (L) (R) replacement-------------------- 23
7.9. K-Board, LED Panel and LED Panel Case
replacement ----------------------------------------------- 23
7.10. LCD Panel Assy replacement------------------------- 24
8 Block Diagram --------------------------------------------------- 27
8.1. Diagram Notes -------------------------------------------- 27
8.2. Main Block Diagram ------------------------------------- 28
8.3. Block (1 of 2) Diagram ---------------------------------- 29
8.4. Block (2 of 2) Diagram ---------------------------------- 30
9 Wiring Connection Diagram --------------------------------- 31
10 Exploded View and Replacement Parts List ----------- 32
10.1. Exploded View -------------------------------------------- 32
10.2. Packing and Accessories ------------------------------ 33
10.3. Parts List --------------------------------------------------- 34