TH-50PB2E - Panasonic Plasma Service Manual (repair manual). Page 2

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TH-50PB2E

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1 Safety Precautions -----------------------------------------------3

1.1. General Guidelines ----------------------------------------3
1.2. Touch-Current Check--------------------------------------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 ------------------------------------------7

4 Specifications ------------------------------------------------------9
5 Service Mode ----------------------------------------------------- 11

5.1. CAT (Computer Aided Test) mode ------------------- 11
5.2. IIC mode structure (following items value is

sample data)----------------------------------------------- 15

5.3. Option - Mirror--------------------------------------------- 16

6 Troubleshooting Guide---------------------------------------- 17

6.1. Self Check ------------------------------------------------- 17
6.2. No Power--------------------------------------------------- 19
6.3. No Picture -------------------------------------------------- 19
6.4. Local screen failure-------------------------------------- 20
6.5. Failure diagnosis when a character cannot be

drawn with an electronic pen-------------------------- 21

6.6. Failure diagnosis when electronic pen cannot

charge with a charger ----------------------------------- 26

6.7. Failure diagnosis at the time of wireless LAN

fault ---------------------------------------------------------- 27

7 Service Fixture & Tools --------------------------------------- 28

7.1. SC jig -------------------------------------------------------- 28

8 Disassembly and Assembly Instructions--------------- 29

8.1. Removal of Rear Cover--------------------------------- 29
8.2. Removal of Slot Block----------------------------------- 29
8.3. Removal of DS-Board----------------------------------- 29
8.4. Removal of HX-Board----------------------------------- 29
8.5. Removal of Speaker------------------------------------- 30
8.6. Removal of A-Board ------------------------------------- 30
8.7. Removal of Fan------------------------------------------- 30
8.8. Removal of P-Board ------------------------------------- 31
8.9. Removal of AC Inlet Assy ------------------------------ 31

8.10. Removal of H3-Board ----------------------------------- 31

8.11. Removal of SU-Board and SD-Board--------------- 32

8.12. Removal of SC-Board----------------------------------- 33
8.13. Removal of SS-Board----------------------------------- 33
8.14. Removal of SS2-Board --------------------------------- 33
8.15. Removal of C1-Board ----------------------------------- 34
8.16. Removal of C2-Board ----------------------------------- 34
8.17. Removal of C3-Board ----------------------------------- 35
8.18. Removal of S1-Board ----------------------------------- 35
8.19. Removal of Front Glass, V1, V2-Board and

Cabinet Assy ---------------------------------------------- 35

8.20. Removal of Plasma Display Panel------------------- 37

9 Measurements and Adjustments -------------------------- 40

9.1. Adjustment ------------------------------------------------- 40
9.2. Adjustment ------------------------------------------------- 41

10 Block Diagram --------------------------------------------------- 45

10.1. Main Block Diagram  ------------------------------------ 45
10.2. Block (1 of 6) Diagram ---------------------------------- 46
10.3. Block (2 of 6) Diagram ---------------------------------- 47

10.4. Block (3 of 6) Diagram --------------------------------- 48
10.5. Block (4 of 6) Diagram --------------------------------- 49
10.6. Block (5 of 6) Diagram --------------------------------- 50
10.7. Block (6 of 6) Diagram --------------------------------- 51

11 Wiring Connection Diagram -------------------------------- 53

11.1. Wiring (1) -------------------------------------------------- 53
11.2. Wiring (2) -------------------------------------------------- 54