Panasonic SC-TM23 - 16 Voltage Measurement

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51

16 Voltage Measurement

Table of Contents

Default Chapter2
- Table of Contents2
1 Safety Precaution3
- Insulation Resistance Test3
- Caution for Fuse Replacement3
2 Before Repair and Adjustment4
3 Protection Circuitry4
4 Prevention of Electro Static Discharge (ESD) to Electrostatically Sensitive (ES) Devices4
5 Handling the Lead-Free Solder5
- About Lead Free Solder (Pbf)5
6 Handling Precautions for Traverse Deck5
7 Precaution of Laser Diode6
8 Accessories7
9 Operation Procedures8
10 Disassembly and Assembly of Main Component9
- Disassembly Flow Chart9
- Gear for Servicing (Jig) Information9
- Disassembly of Top Cabinet10
- Disassembly of CD Lid10
- Disassembly of Rear Panel12
- Disassembly of CD Mechanism Unit12
- Disassembly of Main P.C.B13
- Disassembly of Power P.C.B13
- Disassembly of Transformer P.C.B14
- Disassembly of Front Panel Unit14
- Disassembly of Deck Mechanism Unit15
- CD Mechanism Main Component Replacement Procedures16
- Replacement of the Traverse Deck16
- Replacement for the Disc Tray19
- Disassembly and Reassembly for Mechanism Base Drive Unit22
- Replacement for the Motor Ass'y30
- Replacement for the Pinch Roller Ass'y and Head Block31
- Replacement for the Cassette Lid Ass'y34
- Rectification for Tape Jam Problem35
11 Checking for Major P.C.bs36
- Checking of Main P.C.B36
- Checking of Transformer P.C.B36
- Checking of Panel, Deck& Deck Mechanism P.C.B37
- Checking of Power P.C.B37
12 Self-Diagnostic Function38
- Self-Diagnostic Display38
- How to Enter the Self-Diagnostic Function38
- Cassette Mechanism Test (for Error Code H01, H02, H03, F01)38
- CD Mechanism Test (F15, F26, F16, F17, F27, F28, F29, F30, H15& H16)38
- To Clear All Error Code39
- Power Amplifier Failure (F61)39
- Description of Error Code39
- Abnormality Detection for Deck Mechanism Block39
- Abnormality Detection for CD/Changer Block39
- Power Supply Related Error Detection40
- Error Code (CR20 Mechansim)40
400 CD Test Mode Function41
- How to Set CD Test Mode41
- CD Automatically Adjustment Result Indication41
- CD Mecha Aging Test Mode (CR20)41
14 Measurements and Adjustments42
- Cassette Deck Section42
- Tape Speed Adjustment (Deck 1/2)42
- Bias and Erase Voltage Check42
- Bias Frequency Adjustment (Deck 1/2)42
- Tuner Section42
- AM-IF Alignment42
- AM RF Adjustment43
- Alignment Points43
- Cassette Deck Section43
- Tuner Section43
15 Block Diagram44
16 Voltage Measurement51
17 Schematic Diagram53
- A) CD Servo Circuit54
- B) Main (Tuner) Circuit56
- B) Main Circuit57
- C) Panel Circuit61
- D) Transformer Circuit, (E) CD Detect Circuit, (F)63
- H) Power Circuit64
18 Printed Circuit Board67
- A) CD Servo P.C.B67
- B) Main P.C.B68
- C) Panel P.C.B70
- D) Transformer P.C.B72
- E) CD Detect P.C.B., (F) Spindle Position P.C.B., (G) CD73
- H) Power P.C.B74
- I) Deck P.C.B. & (J) Deck Mechanism P.C.B76
19 Wiring Connection Diagram77
20 Illustration of IC's, Transistors and Diodes78
21 Terminal Function of IC's79
- IC7002 (MN6627953HB) Servo Processor / Digital Signal79
- IC7003 (AN8739SBTE2) Focus Coil/Tracking Coil/ Traverse Motor/ Spindle Motor Drive80
- IC2801 (C2CBJG000565) System Microprocessor80
22 Troubleshooting Guide82
23 Parts Location and Replacement Parts List83
- Deck Mechanism (RAA4502-S)84
- Deck Mechanism Parts Location84
- Deck Mechanism Parts List86
- CD Loading Mechanism (RD-DAC026-S)87
- CD Loading Mechanism Parts Location87
- CD Loading Mechanism Parts List89
- Cabinet90
- Cabinet Parts Location90
- Cabinet Parts List92
- Electrical Parts List93
- Packing Materials& Accessories Parts List121
- Packaging121
- Replacement Parts List124

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