TX-PR42UT30 - 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 Disassembly and Assembly Instructions--------------- 21

8.1. Remove the Rear cover -------------------------------- 21
8.2. Remove the AC inlet ------------------------------------ 21
8.3. Remove the P-Board------------------------------------ 21
8.4. Remove the Side terminal cover --------------------- 21
8.5. Remove the Tuner unit --------------------------------- 21
8.6. Remove the A-Board------------------------------------ 22
8.7. Remove the Speakers ---------------------------------- 22
8.8. Remove the SN-Board---------------------------------- 22
8.9. Remove the SS-Board---------------------------------- 22

8.10. Remove the Stand bracket and the Hanger

metals ------------------------------------------------------- 23

8.11. Remove the Plasma panel section from the

Cabinet assy----------------------------------------------- 23

8.12. Remove the Radiator plate ---------------------------- 23
8.13. Remove the C1-Board ---------------------------------- 24
8.14. Remove the C2-Board ---------------------------------- 24
8.15. Remove the Attachment metal bottom-------------- 24
8.16. Remove the Attachment metal top------------------- 24
8.17. Remove the Glass holders ---------------------------- 24
8.18. Remove the K-Board------------------------------------ 25
8.19. Remove the V-Board ------------------------------------ 25
8.20. Replace the Plasma panel ----------------------------- 25

9 Measurements and Adjustments -------------------------- 26

9.1. Adjustment------------------------------------------------- 26

10 Block Diagram --------------------------------------------------- 33

10.1. Main Block Diagram ------------------------------------- 33
10.2. Block (1/4) Diagram ------------------------------------- 34
10.3. Block (2/4) Diagram ------------------------------------- 35
10.4. Block (3/4) Diagram ------------------------------------- 36
10.5. Block (4/4) Diagram ------------------------------------- 37

11 Wiring Connection Diagram --------------------------------- 39

11.1. Caution statement --------------------------------------- 39
11.2. Wiring (1) -------------------------------------------------- 39
11.3. Wiring (2) -------------------------------------------------- 40
11.4. Wiring (3) -------------------------------------------------- 40
11.5. Wiring (4) -------------------------------------------------- 41
11.6. Wiring (5) -------------------------------------------------- 41