Panasonic SA-VK725DEE, Service Manual

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1 Before Repair and Adjustment 4
2 Protection Circuitry 4
3 Safety Precautions 4
3.1. General Guidelines 4
4 Prevention of Electro Static Discharge (ESD) to
Electrostatically Sensitive (ES) Devices 6
5 Handling the Lead-free Solder 6
5.1. About lead free solder (PbF) 6
6 Precaution of Laser Diode 7
7 Cautions to be taken when handling Optical Pickup 8
7.1. Handling Optical Pickup 8
7.2. Replacing Precautions for Optical Pickup Unit 8
7.3. Grounding for Preventing Electrostatic Destruction 8
8 Accessories 9
9 Operation Procedures 10
10 Disc information 12
11 About HighMAT 14
11.1. What
痴
HighMAT? 14
11.2. Why take advantage of HighMAT? 14
11.3. Benefits of HighMAT? 15
12 Optical Pickup Self-Diagnosis and Replacement Procedure 18
12.1. Optical Pickup Breakdown diagnosis 18
13 Self-Diagnosis Function 19
13.1. Entering into Self-Diagnostic Mode 19
13.2. Automatic Displayed Error Codes 19
13.3. Memorized Error Codes 19
13.4. Service Mode Table 1 20
13.5. DVD/CD Self-Diagnosis Error Code Description 20
13.6. Mode Table 2 20
13.7. CR16 Mechanism Ageing Mode 23
13.8. Operation Lock Function 23
13.9. Things to Do After Repair 24
14 Cautions To Be Taken During Servicing 24
14.1. Recovery after the dvd player is repaired 24
14.2. DVD Player Firmware Version Upgrade Process 24
14.3. Firmware Version Upgrade Process by Using Disc and
Recovery Process 24
14.4. Using Recovery Disc 25
14.5. Total Usage Time Display 25
14.6. After replacement of DVD Module 25
15 Disassembly and Assembly of Main Component 26
15.1. Disassembly steps 26
15.2. Disassembly flow chart 27
15.3. Disassembly of Top Cabinet 28
15.4. Disassembly of Rear Panel 28
15.5. Disassembly of DVD Changer Unit 28
15.6. Disassembly of Main P.C.B. 30
15.7. Disassembly of Power Amp P.C.B. 30
15.8. Disassembly of Power P.C.B. 31
15.9. Disassembly of Transformer P.C.B. 32
15.10. Disassembly of Front Panel Unit 32
15.11. Disassembly for Mic P.C.B. & Panel P.C.B. 34
15.12. Disassembly of Deck Mechanism Unit 35
15.13. Replacement for Deck P.C.B. 35
15.14. Replacement for Traverse Deck 35
15.15. Replacement for Optical Pickup Unit (DVD mechanism) 36
15.16. Procedure for removing CD loading mechanism 39
15.17. CR16 mechanism disassembly procedure 39
15.18. CR16 mechanism assembly procedure 45
15.19. Disassembly for Traverse Unit 57
15.20. Replacement for cassette lid 58
15.21. Rectification for tape jam problem 59
16 Checking for major P.C.Bs 60
16.1. Checking of Main P.C.B. 60
16.2. Checking of Transformer P.C.B. 61
16.3. Checking of Panel, Deck & Deck Mechanism P.C.B. 62
16.4. Checking of Power P.C.B. 63
17 Measurements and Adjustments 64
17.1. Cassette Deck Section 64
17.2. Tuner Section 65
17.3. Alignment Points 66
18 Block Diagram 67
19 Voltage Measurement 78
20 Schematic Diagram 79
20.1. Optical Pickup Unit Circuit 80
20.2. (A) DVD Module Circuit 81
20.3. (B) Main (Tuner) Circuit 88
20.4. (B) Main Circuit 89
20.5. (C) Panel Circuit & (D) Mic Circuit 98
20.6. (E) Deck Circuit & (F) Deck Mechanism Circuit 100
20.7. (G) Power Circuit 102
20.8. (H) Power Amp Circuit 103
20.9. (I) Transformer Circuit 104
20.10. (J) CD Loading Circuit 105
21 Printed Circuit Board 106
21.1. (A) DVD Module P.C.B. (Side: A & B ) 106
21.2. (B) Main P.C.B. 108
21.3. (C) Panel P.C.B. 110
21.4. (D) Mic P.C.B. & (K) Tuner Pack P.C.B. 112
21.5. (E) Deck P.C.B. & (F) Deck Mechanism P.C.B. 113
21.6. (G) Power P.C.B. & (H) Power Amp P.C.B. 114
21.7. (I) Transformer P.C.B. 116
21.8. (J) CD Loading P.C.B. 117
22 Wiring Connection Diagram 118
23 Illustration of ICs, Transistors and Diodes 120
24 Terminal Function of IC 122
24.1. IC2818 (C2CBJG000653) System Microprocessor 122
25 Parts Location and Replacement Parts List 124
25.1. Deck Mechanism (RAA3413-S) 125
25.2. DVD Loading Mechanism 128
25.3. Cabinet 131
25.4. Electrical Parts List 134
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