TX-PR50UT30 - 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------------------------------------------9

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

WIDEVINE and One-to-One ----------------------------9

6 Service Mode ----------------------------------------------------- 10

6.1. How to enter into Service Mode ---------------------- 10
6.2. Option - Mirror--------------------------------------------- 12
6.3. Service tool mode---------------------------------------- 12
6.4. Hotel mode------------------------------------------------- 13
6.5. Data Copy by SD Card --------------------------------- 14

7 Troubleshooting Guide---------------------------------------- 17

7.1. Check of the IIC bus lines------------------------------ 17
7.2. Power LED Blinking timing chart --------------------- 18
7.3. No Power--------------------------------------------------- 18
7.4. No Picture -------------------------------------------------- 19
7.5. Local screen failure-------------------------------------- 20

8 Service Fixture & Tools --------------------------------------- 21

8.1. SC jig -------------------------------------------------------- 21

9 Disassembly and Assembly Instructions--------------- 22

9.1. Remove the Rear cover -------------------------------- 22
9.2. Remove the AC inlet ------------------------------------ 22
9.3. Remove the P-Board------------------------------------ 22
9.4. Remove the Side terminal cover --------------------- 22
9.5. Remove the Tuner unit --------------------------------- 22
9.6. Remove the A-Board------------------------------------ 23
9.7. Remove the Speakers ---------------------------------- 23
9.8. Remove the SU-Board---------------------------------- 23
9.9. Remove the SD-Board---------------------------------- 23

9.10. Remove the SC-Board---------------------------------- 24

9.11. Remove the SS-Board---------------------------------- 24

9.12. Remove the Stand bracket and the Hanger

metals ------------------------------------------------------ 24

9.13. Remove the Plasma panel section from the

Cabinet assy----------------------------------------------- 25

9.14. Remove the Radiator plate ---------------------------- 25
9.15. Remove the C1-Board ---------------------------------- 25
9.16. Remove the C2-Board ---------------------------------- 25
9.17. Remove the C3-Board ---------------------------------- 25
9.18. Remove the Attachment metal bottom-------------- 26
9.19. Remove the Attachment metal top------------------- 26
9.20. Remove the Glass holders ---------------------------- 26
9.21. Remove the K-Board------------------------------------ 26
9.22. Remove the V-Board ------------------------------------ 27
9.23. Replace the Plasma panel ----------------------------- 27

10 Measurements and Adjustments -------------------------- 28

10.1. Adjustment------------------------------------------------- 28

11 Block Diagram --------------------------------------------------- 35

11.1. Main Block Diagram ------------------------------------- 35

11.2. Block (1/4) Diagram ------------------------------------- 36
11.3. Block (2/4) Diagram ------------------------------------- 37
11.4. Block (3/4) Diagram ------------------------------------- 38
11.5. Block (4/4) Diagram ------------------------------------- 39

12 Wiring Connection Diagram -------------------------------- 41

12.1. Caution statement --------------------------------------- 41
12.2. Wiring (1) -------------------------------------------------- 41
12.3. Wiring (2) -------------------------------------------------- 42
12.4. Wiring (3) -------------------------------------------------- 42
12.5. Wiring (4) -------------------------------------------------- 43
12.6. Wiring (5) -------------------------------------------------- 43