Read Panasonic TX-PR42GT20 Service Manual online
2
TABLE OF CONTENTS
PAGE
PAGE
1 Safety Precautions --------------------------------------------------------------
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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 --------------------------------------------------------------
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3.1. PCB Layout ---------------------------------------------------------------
6
3.2. Applicable signals -------------------------------------------------------
7
4 Specifications ---------------------------------------------------------------------
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5 Service Mode----------------------------------------------------------------------
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5.1. How to enter into Service Mode -------------------------------------
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5.2. Option - Mirror----------------------------------------------------------
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5.3. Service tool mode -----------------------------------------------------
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5.4. Hotel mode--------------------------------------------------------------
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5.5. Data Copy by SD Card ----------------------------------------------
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6 Troubleshooting Guide ------------------------------------------------------
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6.1. Check of the IIC bus lines-------------------------------------------
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6.2. Power LED Blinking timing chart ----------------------------------
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6.3. No Power----------------------------------------------------------------
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6.4. No Picture ---------------------------------------------------------------
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6.5. Local screen failure ---------------------------------------------------
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7 Service Fixture & Tools ------------------------------------------------------
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7.1. SC jig ---------------------------------------------------------------------
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8 Disassembly and Assembly Instructions------------------------------
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8.1. Remove the Rear cover ---------------------------------------------
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8.2. Remove the AC inlet -------------------------------------------------
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8.3. Remove the P-Board -------------------------------------------------
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8.4. Remove the Side terminal cover and the Side shield
metal----------------------------------------------------------------------
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8.5. Remove the Tuner unit-----------------------------------------------
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8.6. Remove the A-Board -------------------------------------------------
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8.7. Remove the Speakers -----------------------------------------------
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8.8. Remove the SM-Board ----------------------------------------------
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8.9. Remove the SC-Board-----------------------------------------------
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8.10. Remove the SS2-Board ---------------------------------------------
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8.11. Remove the SS-Board -----------------------------------------------
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8.12. Remove the Hanger metals and the One leg bracket--------
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8.13. Remove the Cabinet mount metals-------------------------------
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8.14. Remove the D-Board-------------------------------------------------
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8.15. Remove the C1-Board -----------------------------------------------
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8.16. Remove the C2-Board -----------------------------------------------
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8.17. Remove the Plasma panel section from the Cabinet
assy-----------------------------------------------------------------------
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8.18. Remove the Contact metals ----------------------------------------
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8.19. Remove the K-Board -------------------------------------------------
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8.20. Remove the V-Board -------------------------------------------------
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8.21. Replace the plasma panel ------------------------------------------
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9 Measurements and Adjustments -----------------------------------------
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9.1. Adjustment --------------------------------------------------------------
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10 Block Diagram ------------------------------------------------------------------
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10.1. Main Block Diagram --------------------------------------------------
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10.2. Block (1/5) Diagram --------------------------------------------------
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10.3. Block (2/5) Diagram --------------------------------------------------
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10.4. Block (3/5) Diagram --------------------------------------------------
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10.5. Block (4/5) Diagram --------------------------------------------------
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10.6. Block (5/5) Diagram --------------------------------------------------
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11 Wiring Connection Diagram------------------------------------------------
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11.1. Caution statement.----------------------------------------------------
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11.2. Wiring (1) ----------------------------------------------------------------
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11.3. Wiring (2) ----------------------------------------------------------------
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11.4. Wiring (3) ----------------------------------------------------------------
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11.5. Wiring (4) ----------------------------------------------------------------
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11.6. Wiring (5) ----------------------------------------------------------------
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12 Schematic Diagram -----------------------------------------------------------
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12.1. Schematic Diagram Note--------------------------------------------
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12.2. P-Board (1/4) Schematic Diagram --------------------------------
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12.3. P-Board (2/4) Schematic Diagram --------------------------------
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12.4. P-Board (3/4) Schematic Diagram --------------------------------
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12.5. P-Board (4/4) Schematic Diagram--------------------------------
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12.6. A-Board (1/26) Schematic Diagram ------------------------------
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12.7. A-Board (2/26) Schematic Diagram ------------------------------
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12.8. A-Board (3/26) Schematic Diagram ------------------------------
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12.9. A-Board (4/26) Schematic Diagram ------------------------------
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12.10. A-Board (5/26) Schematic Diagram ------------------------------
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12.11. A-Board (6/26) Schematic Diagram ------------------------------
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12.12. A-Board (7/26) Schematic Diagram ------------------------------
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12.13. A-Board (8/26) Schematic Diagram ------------------------------
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12.14. A-Board (9/26) Schematic Diagram ------------------------------
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12.15. A-Board (10/26) Schematic Diagram ----------------------------
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12.16. A-Board (11/26) Schematic Diagram ----------------------------
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12.17. A-Board (12/26) Schematic Diagram ----------------------------
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12.18. A-Board (13/26) Schematic Diagram ----------------------------
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12.19. A-Board (14/26) Schematic Diagram ----------------------------
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12.20. A-Board (15/26) Schematic Diagram ----------------------------
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12.21. A-Board (16/26) Schematic Diagram ----------------------------
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12.22. A-Board (17/26) Schematic Diagram ----------------------------
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12.23. A-Board (18/26) and V-Board Schematic Diagram-----------
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12.24. A-Board (19/26) Schematic Diagram ----------------------------
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12.25. A-Board (20/26) Schematic Diagram ----------------------------
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12.26. A-Board (21/26) Schematic Diagram ----------------------------
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12.27. A-Board (22/26) and K-Board Schematic Diagram ----------
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12.28. A-Board (23/26) Schematic Diagram ----------------------------
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12.29. A-Board (24/26) Schematic Diagram ----------------------------
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12.30. A-Board (25/26) Schematic Diagram ----------------------------
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12.31. A-Board (26/26) Schematic Diagram ----------------------------
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12.32. D-Board (1/4) Schematic Diagram -------------------------------
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12.33. D-Board (2/4) Schematic Diagram -------------------------------
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12.34. D-Board (3/4) Schematic Diagram -------------------------------
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12.35. D-Board (4/4) Schematic Diagram -------------------------------
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12.36. C1-Board (1/2) Schematic Diagram------------------------------
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12.37. C1-Board (2/2) Schematic Diagram------------------------------
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12.38. C2-Board (1/2) Schematic Diagram------------------------------
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12.39. C2-Board (2/2) Schematic Diagram------------------------------
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12.40. SC-Board (1/4) Schematic Diagram -----------------------------
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12.41. SC-Board (2/4) Schematic Diagram -----------------------------
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12.42. SC-Board (3/4) Schematic Diagram -----------------------------
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12.43. SC-Board (4/4) Schematic Diagram -----------------------------
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12.44. SS-Board (1/2) Schematic Diagram------------------------------
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12.45. SS-Board (2/2) and SS2-Board Schematic Diagram --------
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13 Printed Circuit Board---------------------------------------------------------
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13.1. P-Board------------------------------------------------------------------
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13.2. K, V and SS2-Board--------------------------------------------------
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13.3. A-Board------------------------------------------------------------------
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13.4. D-Board -----------------------------------------------------------------
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13.5. C1-Board----------------------------------------------------------------
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13.6. C2-Board----------------------------------------------------------------
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13.7. SC-Board -------------------------------------------------------------
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13.8. SS-Board--------------------------------------------------------------
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14 Exploded View and Replacement Parts List------------------------
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14.1. Exploded View and Mechanical Replacement Parts List -
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14.2. Electrical Replacement Parts List-------------------------------
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