TX-PR50VT30 - Panasonic Plasma Service Manual (repair manual). Page 2

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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. PCB Layout--------------------------------------------------6
3.2. Applicable signals------------------------------------------7

4 Specifications ------------------------------------------------------8
5 Technical Descriptions---------------------------------------- 10

5.1. Specification of KEY for CI Plus, DTCP-IP,

WIDEVINE and One-to-One -------------------------- 10

5.2. Service port (M3 mini Jack) Specifications -------- 11

6 Service Mode ----------------------------------------------------- 14

6.1. How to enter into Service Mode ---------------------- 14
6.2. Option - Mirror--------------------------------------------- 16
6.3. Service tool mode---------------------------------------- 16
6.4. Hotel mode------------------------------------------------- 17
6.5. Data Copy by SD Card --------------------------------- 18

7 Troubleshooting Guide---------------------------------------- 21

7.1. Check of the IIC bus lines------------------------------ 21
7.2. Power LED Blinking timing chart --------------------- 22
7.3. No Power--------------------------------------------------- 22
7.4. No Picture -------------------------------------------------- 23
7.5. Local screen failure-------------------------------------- 24

8 Service Fixture & Tools --------------------------------------- 25

8.1. SC jig -------------------------------------------------------- 25

9 Disassembly and Assembly Instructions--------------- 26

9.1. Remove the Rear cover -------------------------------- 26
9.2. Remove the AC inlet ------------------------------------ 26
9.3. Remove the P-Board------------------------------------ 26
9.4. Remove the P2-Board ---------------------------------- 26
9.5. Remove the Terminal covers and the shield

metals ------------------------------------------------------- 27

9.6. Remove the A-Board------------------------------------ 27
9.7. Remove the Side unit assy ---------------------------- 27
9.8. Remove the SU-Board---------------------------------- 28
9.9. Remove the SD-Board---------------------------------- 28

9.10. Remove the SC-Board---------------------------------- 28

9.11. Remove the SS-Board---------------------------------- 29

9.12. Remove the SS2-Board -------------------------------- 29
9.13. Remove the Fan------------------------------------------ 29
9.14. Remove the Speakers ---------------------------------- 29
9.15. Remove the Woofer ------------------------------------- 30
9.16. Remove the Stand bracket----------------------------- 30
9.17. Remove the K-Board------------------------------------ 30
9.18. Remove the S-Board------------------------------------ 30
9.19. Remove the V-Board ------------------------------------ 30
9.20. Remove the Bottom cabinet assy-------------------- 30
9.21. Remove the Plasma panel section from the

Cabinet assy----------------------------------------------- 31

9.22. Remove the Contact metals --------------------------- 31
9.23. Remove the C1-Board ---------------------------------- 31
9.24. Remove the C2-Board ---------------------------------- 32
9.25. Remove the C3-Board ---------------------------------- 32
9.26. Remove the AL frames --------------------------------- 32

9.27. Replace the Plasma panel ---------------------------- 32

10 Measurements and Adjustments -------------------------- 33

10.1. Adjustment ------------------------------------------------ 33

11 Block Diagram --------------------------------------------------- 41

11.1. Main Block Diagram------------------------------------- 41
11.2. Block (1/4) Diagram ------------------------------------- 42
11.3. Block (2/4) Diagram ------------------------------------- 43
11.4. Block (3/4) Diagram ------------------------------------- 44
11.5. Block (4/4) Diagram ------------------------------------- 45

12 Wiring Connection Diagram -------------------------------- 47

12.1. Caution statement. -------------------------------------- 47
12.2. Wiring (1) -------------------------------------------------- 47
12.3. Wiring (2) -------------------------------------------------- 48
12.4. Wiring (3) -------------------------------------------------- 49