Panasonic SA-EN37 - Circuit & (I) Switch Circuit

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16.5. (F) LED Circuit, (G) Power Switch Circuit, (H) Tact Switch Circuit & (I) Switch Circuit

SC-EN37P

50

Table of Contents

Default Chapter2
- Table of Contents2
1 Safety Precautions4
- General Guidelines4
- Caution for Fuse Replacement5
- Before Repair and Adjustment5
- Protection Circuitry5
- Safety Parts Information5
2 Prevention of Electro Static Discharge (ESD) to Electrostatically Sensitive (ES) Devices6
3 Precaution of Laser Diode7
4 Handling Precautions for Traverse Unit7
5 About Lead Free Solder (Pbf)9
- Service Caution Based on Legal Restrictions9
6 Accessories10
7 Operation Procedures11
- Remote Control Key Buttons Operations11
- Main Unit Key Buttons Operations11
- Connection12
8 Self Diagnosis and Special Mode Setting13
- Service Mode Summary Table13
- Service Mode Table13
- Error Code Table16
9 Assembling and Disassembling17
- Caution17
- Disassembly Flow Chart18
- Main Components & P.C.B. Locations19
- Disassembly of Rear Cabinet20
- Disassembly of D-Port P.C.B20
- Disassembly of Panel P.C.B. & LED P.C.B20
- Disassembly of Main P.C.B., Sensor P.C.B. & Tuner P.C.B21
- Disassembly of Switch P.C.B. & Traverse Unit21
- Disassembly of Power Switch P.C.B. & Tact Switch P.C.B22
- Replacement of Traverse Cover22
- Disassembly of CD Servo P.C.B23
- Disassembly of Motor Unit & Motor P.C.B24
- Disassembly of CD Block & CD Lid25
- Disassembly of Speakers26
10 Service Fixture and Tools29
11 Service Positions29
- Check and Repair of CD Servo P.C.B30
- Check and Repair of Main P.C.B., Sensor P.C.B., Tuner31
  - P.C.b31
12 Voltage and Waveform Chart32
- Main P.C.B32
- CD Servo P.C.B33
- Motor P.C.B33
- Panel P.C.B33
- Tuner P.C.B33
- Waveform Chart34
13 Wiring Connection Diagram35
14 Block Diagram37
- CD Servo37
- Tuner38
- Main (1/2), Transformer, Sensor & D-Port39
- Main (2/2), Panel, LED, Power Switch, Tact Switch, Switch & Motor40
15 Notes of Schematic Diagrams41
16 Schematic Diagram43
- A) CD Servo Circuit44
- B) Tuner Circuit45
- C) Main Circuit46
- D) Panel Circuit & (E) D-Port Circuit49
  - Circuit & (I) Switch Circuit50
- J) Motor Circuit, (K) Sensor Circuit & (L) Transformer Circuit51
17 Printed Circuit Board53
- A) CD Servo P.C.B. & (B) Tuner53
- C) Main54
- D) Panel P.C.B., (E) D-Port P.C.B., (F) LCD P.C.B., (G) Power Switch P.C.B. & (H) Tact Switch P.C.B55
- I) Switch Circuit P.C.B., (J) Motor Circuit P.C.B., (K)56
  - Sensor Circuit P.C.B. & (L) Transformer57
18 Illustration of Ics, Transistors and Diodes59
19 Terminal Function of IC's60
20 Exploded Views61
- Cabinet Parts Location61
- Packaging63
21 Replacement Parts List65

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