Read Panasonic TX-PR50VT20 Service Manual online
2
TABLE OF CONTENTS
PAGE
PAGE
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 -------------------------------------------------------
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5.1. Service port (M3 mini Jack) Specifications ----------------------
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6 Service Mode---------------------------------------------------------------------
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6.1. How to enter into Service Mode------------------------------------
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6.2. Option - Mirror ----------------------------------------------------------
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6.3. Service tool mode -----------------------------------------------------
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6.4. Hotel mode --------------------------------------------------------------
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6.5. Data Copy by SD Card -----------------------------------------------
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7 Troubleshooting Guide -------------------------------------------------------
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7.1. Check of the IIC bus lines -------------------------------------------
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7.2. Power LED Blinking timing chart-----------------------------------
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7.3. No Power ----------------------------------------------------------------
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7.4. No Picture----------------------------------------------------------------
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7.5. Local screen failure ---------------------------------------------------
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8 Service Fixture & Tools-------------------------------------------------------
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8.1. SC jig----------------------------------------------------------------------
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9 Disassembly and Assembly Instructions ------------------------------
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9.1. Remove the Rear cover----------------------------------------------
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9.2. Remove the AC inlet --------------------------------------------------
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9.3. Remove the P-Board -------------------------------------------------
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9.4. Remove the Side terminal cover and the Side shield
metal ----------------------------------------------------------------------
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9.5. Remove the Tuner unit -----------------------------------------------
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9.6. Remove the A-Board -------------------------------------------------
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9.7. Remove the Speakers ------------------------------------------------
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9.8. Remove the Woofer ---------------------------------------------------
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9.9. Remove the Fan -------------------------------------------------------
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9.10. Remove the SU-Board -----------------------------------------------
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9.11. Remove the SD-Board -----------------------------------------------
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9.12. Remove the SC-Board -----------------------------------------------
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9.13. Remove the SS2-Board----------------------------------------------
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9.14. Remove the SS-Board -----------------------------------------------
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9.15. Remove the Hanger metals and the One leg bracket --------
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9.16. Remove the Cabinet mount metals -------------------------------
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9.17. Remove the D-Board -------------------------------------------------
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9.18. Remove the C1-Board------------------------------------------------
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9.19. Remove the C2-Board------------------------------------------------
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9.20. Remove the C3-Board------------------------------------------------
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9.21. Remove the C4-Board------------------------------------------------
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9.22. Remove the C5-Board------------------------------------------------
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9.23. Remove the C6-Board------------------------------------------------
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9.24. Remove the Plasma panel section from the Cabinet
assy -----------------------------------------------------------------------
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9.25. Remove the Contact metals-----------------------------------------
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9.26. Remove the K-Board -------------------------------------------------
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9.27. Remove the V-Board--------------------------------------------------
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9.28. Replace the plasma panel -------------------------------------------
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10 Measurements and Adjustments ------------------------------------------
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10.1. Adjustment---------------------------------------------------------------
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11 Block Diagram -------------------------------------------------------------------
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11.1. Main Block Diagram---------------------------------------------------
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11.2. Block (1/5) Diagram ---------------------------------------------------
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11.3. Block (2/5) Diagram ---------------------------------------------------
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11.4. Block (3/5) Diagram ---------------------------------------------------
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11.5. Block (4/5) Diagram ---------------------------------------------------
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11.6. Block (5/5) Diagram ---------------------------------------------------
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12 Wiring Connection Diagram ------------------------------------------------
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12.1. Caution statement. ----------------------------------------------------
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12.2. Wiring (1)-----------------------------------------------------------------
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12.3. Wiring (2)-----------------------------------------------------------------
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12.4. Wiring (3)-----------------------------------------------------------------
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12.5. Wiring (4)-----------------------------------------------------------------
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12.6. Wiring (5)-----------------------------------------------------------------
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13 Schematic Diagram ------------------------------------------------------------
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13.1. Schematic Diagram Note --------------------------------------------
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13.2. P-Board (1/3) Schematic Diagram --------------------------------
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13.3. P-Board (2/3) Schematic Diagram --------------------------------
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13.4. P-Board (3/3) Schematic Diagram --------------------------------
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13.5. A-Board (1/25) Schematic Diagram -------------------------------
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13.6. A-Board (2/25) Schematic Diagram -------------------------------
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13.7. A-Board (3/25) Schematic Diagram -------------------------------
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13.8. A-Board (4/25) Schematic Diagram -------------------------------
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13.9. A-Board (5/25) Schematic Diagram -------------------------------
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13.10. A-Board (6/25) Schematic Diagram -------------------------------
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13.11. A-Board (7/25) Schematic Diagram -------------------------------
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13.12. A-Board (8/25) Schematic Diagram -------------------------------
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13.13. A-Board (9/25) Schematic Diagram -------------------------------
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13.14. A-Board (10/25) Schematic Diagram -----------------------------
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13.15. A-Board (11/25) Schematic Diagram -----------------------------
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13.16. A-Board (12/25) Schematic Diagram -----------------------------
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13.17. A-Board (13/25) Schematic Diagram -----------------------------
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13.18. A-Board (14/25) Schematic Diagram -----------------------------
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13.19. A-Board (15/25) Schematic Diagram -----------------------------
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13.20. A-Board (16/25) Schematic Diagram -----------------------------
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13.21. A-Board (17/25) Schematic Diagram -----------------------------
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13.22. A-Board (18/25) and V-Board Schematic Diagram------------
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13.23. A-Board (19/25) Schematic Diagram -----------------------------
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13.24. A-Board (20/25) Schematic Diagram -----------------------------
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13.25. A-Board (21/25) and K-Board Schematic Diagram------------
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13.26. A-Board (22/25) Schematic Diagram -----------------------------
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13.27. A-Board (23/25) Schematic Diagram -----------------------------
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13.28. A-Board (24/25) Schematic Diagram -----------------------------
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13.29. A-Board (25/25) Schematic Diagram -----------------------------
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13.30. D-Board (1/5) Schematic Diagram --------------------------------
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13.31. D-Board (2/5) Schematic Diagram --------------------------------
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13.32. D-Board (3/5) Schematic Diagram --------------------------------
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13.33. D-Board (4/5) Schematic Diagram --------------------------------
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13.34. D-Board (5/5) Schematic Diagram --------------------------------
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13.35. C1-Board Schematic Diagram--------------------------------------
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13.36. C2-Board (1/2) Schematic Diagram-------------------------------
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13.37. C2-Board (2/2) Schematic Diagram-------------------------------
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13.38. C3-Board (1/2) Schematic Diagram-------------------------------
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13.39. C3-Board (2/2) Schematic Diagram-------------------------------
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13.40. C4-Board Schematic Diagram--------------------------------------
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13.41. C5-Board (1/2) Schematic Diagram-------------------------------
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13.42. C5-Board (2/2) Schematic Diagram-------------------------------
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13.43. C6-Board (1/2) Schematic Diagram-------------------------------
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13.44. C6-Board (2/2) Schematic Diagram-------------------------------
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13.45. SC-Board (1/4) Schematic Diagram ------------------------------
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13.46. SC-Board (2/4) Schematic Diagram ------------------------------
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13.47. SC-Board (3/4) Schematic Diagram ------------------------------
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13.48. SC-Board (4/4) Schematic Diagram ------------------------------
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13.49. SS-Board (1/2) Schematic Diagram-------------------------------
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13.50. SS-Board (2/2) and SS2-Board Schematic Diagram ---------
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14 Printed Circuit Board----------------------------------------------------------
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14.1. P-Board-------------------------------------------------------------------
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14.2. K, V and SS2-Board-------------------------------------------------
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14.3. A-Board-----------------------------------------------------------------
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14.4. D-Board ----------------------------------------------------------------
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14.5. C1-Board---------------------------------------------------------------
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14.6. C2-Board---------------------------------------------------------------
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14.7. C3-Board---------------------------------------------------------------
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14.8. C4-Board---------------------------------------------------------------
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14.9. C5-Board---------------------------------------------------------------
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14.10. C6-Board----------------------------------------------------------------
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14.11. SC-Board ---------------------------------------------------------------
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14.12. SS-Board----------------------------------------------------------------
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15 Exploded View and Replacement Parts List-------------------------
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15.1. Exploded View and Mechanical Replacement Parts List ---
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15.2. Electrical Replacement Parts List--------------------------------
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