SC-HC55EG - Panasonic Audio Service Manual (repair manual). Page 2

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7 Service Fixture & Tools --------------------------------------- 29
8 Disassembly and Assembly Instructions --------------- 30

8.1. Disassembly flow chart --------------------------------- 31
8.2. Types of Screws ------------------------------------------ 32
8.3. Main Parts Location Diagram ------------------------- 32
8.4. Disassembly of Stand Assembly --------------------- 33
8.5. Replacement of Door Assembly---------------------- 33
8.6. Replacement of Cam Gear ---------------------------- 35
8.7. Disassembly of Lens Cover --------------------------- 37
8.8. Disassembly of Net Frame Assembly--------------- 38
8.9. Disassembly of Front Panel Block ------------------- 40

8.10. Disassembly of Gear Box Assembly ---------------- 42

8.11. Disassembly of Remote Sensor P.C.B. & iPod

Open Switch P.C.B.-------------------------------------- 46

8.12. Disassembly of Interlock Switch P.C.B.------------- 47
8.13. Replacement of iPod Tub Assembly ---------------- 48
8.14. Disassembly of Mini Side Lock ----------------------- 51
8.15. Disassembly of iPhone P.C.B. ------------------------ 51
8.16. Disassembly of Top Guide Reel ---------------------- 53
8.17. Disassembly of Bottom Guide Reel ----------------- 54
8.18. Disassembly of Top Ornament Assembly ---------- 56
8.19. Disassembly of Button P.C.B. ------------------------- 57
8.20. Disassembly of Top Button & Power Light

Piece -------------------------------------------------------- 58

8.21. Disassembly of Bluetooth P.C.B. --------------------- 59
8.22. Disassembly of Panel P.C.B. -------------------------- 60
8.23. Disassembly of Jack Lid-------------------------------- 61
8.24. Disassembly of Tuner P.C.B. -------------------------- 62
8.25. Disassembly of CD Mechanism ---------------------- 63
8.26. Disassembly of CD Servo P.C.B.--------------------- 65
8.27. Disassembly of SMPS P.C.B. ------------------------- 66
8.28. Replacement of Diode (D702) ------------------------ 69
8.29. Replacement of Transistor (Q701)------------------- 70
8.30. Disassembly of Passive Radiator (SP6) ----------- 72
8.31. Disassembly of Passive Radiator (SP5) ----------- 72
8.32. Disassembly of Front Speaker (SP2) --------------- 73
8.33. Disassembly of Front Speaker (SP1) --------------- 75
8.34. Disassembly of Piezo Unit (SP8) -------------------- 76
8.35. Disassembly of Piezo Unit (SP7) -------------------- 77
8.36. Disassembly of Passive Radiator (SP4) ----------- 78
8.37. Disass embly of Passive Radiator (SP3)----------- 79
8.38. Disassembly of Main P.C.B. --------------------------- 79

9 Service Position ------------------------------------------------- 82

9.1. Checking & Repairing of Panel P.C.B. -------------- 82
9.2. Checking & Repairing of CD Servo P.C.B.--------- 83
9.3. Checking & Repairing of Main (Side B) P.C.B. --- 85
9.4. Checking & Repairing of Main (Side A) P.C.B. --- 89
9.5. Checking & Repairing of SMPS P.C.B. ------------- 92

10 Voltage Measurement & Waveform Chart--------------- 96

10.1. CD SERVO P.C.B. --------------------------------------- 96
10.2. MAIN P.C.B. (1/3) ---------------------------------------- 97
10.3. MAIN P.C.B. (2/3) ---------------------------------------- 98
10.4. MAIN P.C.B. (3/3) ---------------------------------------- 99
10.5. PANEL P.C.B. ------------------------------------------- 100
10.6. SMPS P.C.B. -------------------------------------------- 100
10.7. TUNER P.C.B. ------------------------------------------ 100
10.8. BUTTON P.C.B. ---------------------------------------- 100
10.9. REMOTE SENSOR P.C.B. -------------------------- 101

10.10. Waveform Chart ---------------------------------------- 101

11 Illustration of IC’s, Transistors and Diodes ---------- 102

12 Overall Simplified Block ------------------------------------ 103

12.1. Voltage / Current / Ground Diagram --------------- 103
12.2. Control & Signal Diagram ---------------------------- 104

13 Block Diagram -------------------------------------------------- 105

13.1. SERVO & SYSTEM CONTROL (1/2) BLOCK

DIAGRAM ------------------------------------------------ 105

13.2. SERVO & SYSTEM CONTROL (2/2) BLOCK

DIAGRAM ------------------------------------------------ 106

13.3. IC TERMINAL CHART -------------------------------- 107
13.4. BLUETOOTH BLOCK DIAGRAM ------------------ 108
13.5. AUDIO BLOCK DIAGRAM --------------------------- 109
13.6. POWER SUPPLY (1/2) BLOCK DIAGRAM------ 110
13.7. POWER SUPPLY (2/2) BLOCK DIAGRAM------ 111

14 Wiring Connection Diagram ------------------------------- 112
15 Schematic Diagram ------------------------------------------- 113

15.1. Schematic Diagram Notes --------------------------- 113
15.2. CD SERVO CIRCUIT (1/2)--------------------------- 115
15.3. CD SERVO CIRCUIT (2/2)--------------------------- 116
15.4. MAIN CIRCUIT (1/4) ----------------------------------- 117
15.5. MAIN CIRCUIT (2/4) ----------------------------------- 118
15.6. MAIN CIRCUIT (3/4) ----------------------------------- 119
15.7. MAIN CIRCUIT (4/4) ----------------------------------- 120
15.8. MAIN (BLUETOOTH) CIRCUIT--------------------- 121
15.9. MAIN (SOUND) CIRCUIT ---------------------------- 122

15.10. MAIN (USB/iPod) CIRCUIT -------------------------- 123

15.11. iPhone, TUNER & MOTOR CIRCUIT ------------- 124

15.12. REMOTE SENSOR & iPod OPEN SWITCH

CIRCUIT -------------------------------------------------- 125

15.13. PANEL, INTERLOCK SWITCH & BUTTON

CIRCUIT -------------------------------------------------- 126

15.14. SMPS CIRCUIT ----------------------------------------- 127

16 Printed Circuit Board----------------------------------------- 128

16.1. CD SERVO P.C.B.-------------------------------------- 128
16.2. MAIN P.C.B. (Side A) ---------------------------------- 129
16.3. MAIN P.C.B. (Side B) ---------------------------------- 130
16.4. iPhone, TUNER, iPod OPEN SWITCH,

MOTOR & REMOTE SENSOR P.C.B. ------------ 131

16.5. PANEL, INTERLOCK SWITCH & BUTTON

P.C.B. ------------------------------------------------------ 132

16.6. SMPS P.C.B.--------------------------------------------- 133

17 Terminal Function of IC’s ----------------------------------- 135

17.1. IC801 (RFKWMHC55M0) MICRO

PROCESSOR IC --------------------------------------- 135

18 Exploded View and Replacement Parts List---------- 137

18.1. Exploded View and Mechanical replacement

Parts List -------------------------------------------------- 137

18.2. Electrical Replacement Parts List ------------------ 143