Panasonic PTD7700U - DLP PROJECTOR, Service Manual

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1 Safety Precautions 5
1.1. General Guidelines 5
1.2. Leakage Current Check 5
2 Specifications 6
3 Function for Safety 8
3.1. Temperature Detection inside the Lamp Unit 8
3.2. Interlock Switch 8
4 Serviceman Mode 9
4.1. Setting to Serviceman Mode 9
4.2. Resetting to User Mode 9
4.3. Functions in Serviceman Mode 10
5 Using the Serial Terminals 12
5.1. Examples of Connection 12
5.2. Pin Assignments and Signal Names 12
5.3. Communication Conditions (Factory Setting) 12
5.4. Basic Format 12
5.5. Procedure of Communication Condition Settings 13
5.6. Control commands 14
5.7. Cable specifications 17
5.8. Converting to RS-422 Control Functions 17
6 Using a Wired Remote Control 20
6.1. Connection Example 20
6.2. Setting the Projector ID Number for Remote Control 20
7 Support for Service 21
7.1. Supporting Methods 21
7.2. Note for Replacement of P.C.Boards 21
7.3. Service Kit (Extension Board) for X-P.C.Board 21
7.4. Replacement of the lithium battery on the R-P.C.Board 22
8 Cautions for Service 23
9 Parts Location 24
9.1. Electrical Parts Location 24
9.2. Electromechanical Parts Location 24
10 Replacement of Lamp Unit 25
10.1. Precautions on Lamp Unit Replacement 25
10.2. Timing of Lamp Unit Replacement 25
10.3. Lamp Monitor 26
10.4. Procedure of Lamp Unit Replacement 27
11 Disassembly Instructions 29
11.1. Flowchart for Disassembly 29
11.2. Air Filter Cleaning 30
11.3. Removal of Upper Cover 30
11.4. Removal of A-P.C.Board 31
11.5. Removal of S-P.C.Board 32
11.6. Removal of J-P.C.Board 33
11.7. Removal of G-P.C.Board 34
11.8. Removal of R-P.C.Board 35
11.9. Removal of X-P.C.Board 35
11.10. Removal of K-P.C.Board 35
11.11. Removal of Power Supply Block 36
11.12. Removal of PA-P.C.Board 36
11.13. Removal of PC-P.C.Board 37
11.14. Removal of PB-P.C.Board 37
11.15. Removal of Ballast-1 Module 38
11.16. Removal of Ballast-2 Module 39
11.17. Removal of Analysis Block 40
11.18. Removal of DMD / Prism Block 42
12 Troubleshooting 44
12.1. Power Supply Checks 44
12.2. Signal Processing Circuit Checks 53
13 Interconnection Block Diagram 67
13.1. Interconnection Block Diagram (1 / 3) 67
13.2. Interconnection Block Diagram (2 / 3) 68
13.3. Interconnection Block Diagram (3 / 3) 69
14 Block Diagram 71
14.1. Power Supply 71
14.2. Signal Processing (1 / 2) 72
14.3. Signal Processing (2 / 2) 73
15 Schematic Diagram 75
15.1. A-P.C.Board (1 / 9) 76
15.2. A-P.C.Board (2 / 9) 77
15.3. A-P.C.Board (3 / 9) 78
15.4. A-P.C.Board (4 / 9) 79
15.5. A-P.C.Board (5 / 9) 80
15.6. A-P.C.Board (6 / 9) 81
15.7. A-P.C.Board (7 / 9) 82
15.8. A-P.C.Board (8 / 9) 83
15.9. A-P.C.Board (9 / 9) 84
15.10. G-P.C.Board (1 / 2) 85
15.11. G-P.C.Board (2 / 2) 86
15.12. J-P.C.Board (1 / 2) 87
15.13. J-P.C.Board (2 / 2) 88
15.14. K-P.C.Board 89
15.15. PA-P.C.Board 90
15.16. PB-P.C.Board 91
15.17. PC-P.C.Board 92
15.18. R-P.C.Board / S-P.C.Board 93
15.19. X-P.C.Board (1 / 3) 94
15.20. X-P.C.Board (2 / 3) 95
15.21. X-P.C.Board (3 / 3) 96
16 Circuit Boards 97
16.1. A-P.C.Board (Foil Side) 97
16.2. A-P.C.Board (Component Side) 98
16.3. X-P.C.Board,S-P.C.Board (Foil Side) 99
16.4. X-P.C.Board,S-P.C.Board (Component Side) 100
16.5. G-P.C.Board 101
16.6. PA-P.C.Board / R-P.C.Board (Foil Side) 102
16.7. PB-P.C.Board / R-P.C.Board (Component Side) 103
16.8. PC-P.C.Board 104
17 Terminal guide of ICs and transistors 105
18 Exploded Views 107
19 Replacement Parts List 111
CONTENTS
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PT-D7700U / PT-D7700E