SA-PM42EG, SA-PM42EF, SA-PM42EP, SC-PM42EP - Panasonic Audio Service Manual (repair manual). Page 2

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7 Troubleshooting Guide---------------------------------------- 20
8 Service Fixture & Tools --------------------------------------- 21
9 Disassembly and Assembly Instructions --------------- 22

9.1. Disassembly flow chart --------------------------------- 23
9.2. Main Parts Location Diagram ------------------------- 24
9.3. Disassembly of Top Cabinet Assembly ------------- 25
9.4. Disassembly of Headphone P.C.B. ------------------ 26
9.5. Disassembly of iPod P.C.B.---------------------------- 27
9.6. Disassembly of iPod Lid -------------------------------- 27
9.7. Disassembly of Front Panel Assembly ------------- 32
9.8. Disassembly of USB P.C.B. --------------------------- 33
9.9. Disassembly of Panel P.C.B. -------------------------- 34

9.10. Disassembly of FL Window---------------------------- 35

9.11. Disassembly of Centre Ornament ------------------- 36

9.12. Disassembly of CD Lid---------------------------------- 36
9.13. Disassembly of CD Mechanism Unit (DLS6C) --- 38
9.14. Disassembly of Power P.C.B. ------------------------- 38
9.15. Replacement of Power Amp IC (IC5101) ---------- 40
9.16. Disassembly of Main P.C.B. --------------------------- 42
9.17. Disassembly of Fan Unit ------------------------------- 44
9.18. Disassembly of Transformer P.C.B. ----------------- 45
9.19. Replacement of Transistor (Q5901) ----------------- 46
9.20. Disassembly of CD Servo P.C.B.--------------------- 48

10 Disassembly and Assembly of Traverse Unit --------- 50

10.1. Disassembling Procedures ---------------------------- 50
10.2. Assembling Procedure---------------------------------- 51

11 Service Position ------------------------------------------------- 53

11.1. Checking & Repairing USB P.C.B.------------------- 53
11.2. Checking & Repairing Panel P.C.B. ----------------- 55
11.3. Checking & Repairing CD Servo P.C.B. ------------ 56
11.4. Checking & Repairing Power P.C.B. ---------------- 57
11.5. Checking & Repairing Transformer P.C.B.--------- 58
11.6. Checking & Repairing Main P.C.B. ------------------ 60

12 Voltage Measurement & Waveform Chart--------------- 61

12.1. CD SERVO P.C.B. --------------------------------------- 61
12.2. USB P.C.B.------------------------------------------------- 62
12.3. MAIN P.C.B. (1/2) ---------------------------------------- 63
12.4. MAIN P.C.B. (2/2) ---------------------------------------- 64
12.5. PANEL P.C.B. --------------------------------------------- 64
12.6. POWER P.C.B. ------------------------------------------- 64
12.7. TRANSFORMER P.C.B.-------------------------------- 65
12.8. Waveform Chart ------------------------------------------ 66

13 Illustration of IC’s, Transistors and Diodes ------------ 67
14 Overall Simplified Block -------------------------------------- 69
15 Block Diagram --------------------------------------------------- 70

15.1. SERVO/SYSTEM CONTROL BLOCK

DIAGRAM -------------------------------------------------- 70

15.2. AUDIO BLOCK DIAGRAM ---------------------------- 71
15.3. POWER SUPPLY BLOCK DIAGRAM -------------- 72

16 Wiring Connection Diagram --------------------------------- 73
17 Schematic Diagram Notes ----------------------------------- 75
18 Schematic Diagram--------------------------------------------- 77

18.1. CD SERVO CIRCUIT ----------------------------------- 77
18.2. MAIN CIRCUIT (1/4) ------------------------------------ 78
18.3. MAIN CIRCUIT (2/4) ------------------------------------ 79
18.4. MAIN CIRCUIT (3/4) ------------------------------------ 80
18.5. MAIN CIRCUIT (4/4) ------------------------------------ 81
18.6. PANEL CIRCUIT and HEADPHONE CIRCUIT--- 82
18.7. USB CIRCUIT--------------------------------------------- 83
18.8. iPod CIRCUIT and POWER CIRCUIT -------------- 84
18.9. TRANSFORMER CIRCUIT---------------------------- 85

19 Printed Circuit Board------------------------------------------ 87

19.1. CD SERVO P.C.B. and TRANSFORMER

P.C.B. ------------------------------------------------------- 87

19.2. MAIN P.C.B.----------------------------------------------- 88
19.3. PANEL P.C.B., HEADPHONE P.C.B. and

POWER P.C.B. ------------------------------------------- 89

19.4. iPod P.C.B. and USB P.C.B. -------------------------- 90

20 Terminal Function of IC’s ------------------------------------ 91

20.1. IC7001 (MN6627954AMA) IC SERVO

PROCESSOR -------------------------------------------- 91

20.2. IC7002 (BA5948FPE2) IC 4CH Drive -------------- 92
20.3. IC800 (RFKWMPM38EG) IC MICRO-

PROCESSOR -------------------------------------------- 92

21 Exploded View and Replacement Parts List----------- 95

21.1. Exploded View and Mechanical replacement

Parts List --------------------------------------------------- 95

21.2. Electrical Replacement Parts List ------------------- 99