Panasonic SA-AK240E - Checking and Repairing of Transformer P.C.B

Panasonic SA-AK240E

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12.2. Checking and Repairing of Transformer P.C.B.

41

SA-AK240E / SA-AK240EB / SA-AK240EG

Table of Contents

Default Chapter1
- Specifications1
- Table of Contents2
1 Safety Precautions4
- General Guidelines4
- Caution for AC Mains Lead5
- Before Repair and Adjustment5
- Protection Circuitry6
2 Prevention of Electro Static Discharge (ESD) to Electrostatically Sensitive (ES) Devices6
3 Handling Precautions for Traverse Deck7
4 Precaution of Laser Diode8
5 Handling the Lead-Free Solder9
- About Lead Free Solder (Pbf)9
6 New Features10
- CRS1 Mechanism Overview10
- Music Port12
7 Accessories13
8 Operating Instructions Procedures14
9 Self Diagnosis and Special Mode Setting16
- Special Mode Table16
- Error Code Table18
10 Assembling and Disassembling22
- Caution22
- Disassembly Flow Chart23
- Main Parts Location24
- Disassembly of Top Cabinet25
- Disassembly of Rear Panel25
- Disassembly of CD Changer Unit (CRS1)25
- Disassembly of Main P.C.B27
- Disassembly of Transformer P.C.B27
  - Disassembly of Power P.C.B28
- Disassembly of Front Panel Unit29
- Disassembly for Panel P.C.B30
- Disassembly of Deck Mechanism Unit31
- Disassembly of Deck P.C.B31
- Disassembly of Traverse Unit31
- Disassembly of Optical Pickup Unit (CD Mechanism)33
- Disassembly of Deck Mechanism36
- Replacement for Cassette Lid38
- Rectification for Tape Jam Problem39
11 Service Fixture and Tools40
12 Service Positions40
- Checking and Repairing of Main P.C.B40
- Checking and Repairing of Transformer P.C.B41
- Checking and Repairing of Panel, Deck & Deck Mechanism P.C.B42
- Checking and Repairing of Power P.C.B43
13 Adjustment Procedures44
- Cassette Deck Section44
- Tuner Section45
- Adjustment Point46
14 Voltage and Waveform Chart47
- CD Servo P.C.B. & Main P.C.B47
- Power P.C.B. & Transformer P.C.B49
- Waveform Chart50
15 Wiring Connection Diagram52
16 Block Diagram53
- Schematic Diagram57
  - Notes of Schematic Diagrams57
- A) CD Servo Circuit59
- B) Main (Tuner) Circuit61
- B) Main Circuit63
- C) Panel Circuit67
- D) Transformer Circuit69
- H) Power Circuit71
- F) Deck Circuit & (G) Deck Mechanism Circuit73
18 Printed Circuit Board75
- A) CD Servo P.C.B76
- B) Main77
- B) Main P.C.B77
- C) Panel P.C.B78
- D) Transformer79
- D) Transformer P.C.B79
- E) Power80
  - E) Power P.C.B80
  - F) Deck P.C.B. & (G) Deck Mechanism P.C.B81
19 Illustration of Ics, Transistors and Diodes83
20 Terminal Function of IC's84
- IC7001 (MN6627954MA) Servo Processor,Digital Signal Processor/Digital Filter and D/A Converter84
- IC7002 (BA5948FPE2) IC 4CH Drive85
- IC2801 (C2CBYY000053) System Microprocessor85
21 Exploded Views87
- Cabinet Parts Location89
- Deck Mechanism Parts Location (RAA4502-S)91
- Packaging93
22 Replacement Parts List95

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