RX-D55EG - Panasonic Audio Service Manual (repair manual). Page 2

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8.1. Disassembly flow chart --------------------------------- 21
8.2. Main Parts Location Diagram ------------------------- 22
8.3. Disassembly of Top Cabinet Assembly ------------- 23
8.4. Disassembly of Front Panel Assembly ------------- 24
8.5. Disassembly of USB P.C.B. --------------------------- 25
8.6. Disassembly of Music Port P.C.B. ------------------- 25
8.7. Disassembly of Panel P.C.B., Standby P.C.B.

and Volume P.C.B. --------------------------------------- 26

8.8. Disassembly of Woofer Speaker (SP1)------------- 27
8.9. Disassembly of Woofer Speaker (SP2)------------- 27

8.10. Disassembly of CD Lid---------------------------------- 28

8.11. Disassembly of Deck Mechanism Unit ------------- 29

8.12. Disassembly of Deck P.C.B.--------------------------- 30
8.13. Disassembly of Cassette Lid -------------------------- 31
8.14. Disassembly of Mecha Bottom Cover -------------- 32
8.15. Disassembly of Power P.C.B. ------------------------- 34
8.16. Disassembly of Main P.C.B. --------------------------- 35
8.17. Replacement of Transisor (Q4107)------------------ 36
8.18. Replacement of Power IC (IC4101) ----------------- 38
8.19. Disassembly of CD Mechanism Unit ---------------- 40
8.20. Disassembly of CD Servo P.C.B.--------------------- 41
8.21. Disassembly of Battery (1) P.C.B.-------------------- 41
8.22. Disassembly of Battery (2) P.C.B.-------------------- 43

9 Disassembly and Assembly of Traverse Unit --------- 44

9.1. Disassembling Procedures ---------------------------- 44
9.2. Assembling Procedure---------------------------------- 45

10 Service Position ------------------------------------------------- 47

10.1. Checking & Repairing Deck P.C.B. ------------------ 47
10.2. Checking & Repairing Panel P.C.B. ----------------- 47
10.3. Checking & Repairing Power P.C.B. ---------------- 48
10.4. Checking & Repairing Main P.C.B. ------------------ 48
10.5. Checking & Repairing CD Servo P.C.B. ------------ 50
10.6. Checking & Repairing USB P.C.B.------------------- 51

11 Measurements and Adjustments -------------------------- 52

11.1. Tuner Section --------------------------------------------- 52
11.2. Deck Mechanism Section ------------------------------ 54

12 Voltage Measurement & Waveform Chart--------------- 55

12.1. CD SERVO P.C.B. --------------------------------------- 55
12.2. MAIN P.C.B. (1/2) ---------------------------------------- 56
12.3. MAIN P.C.B. (2/2) ---------------------------------------- 57
12.4. DECK P.C.B. ---------------------------------------------- 57
12.5. PANEL P.C.B. --------------------------------------------- 58
12.6. POWER P.C.B. ------------------------------------------- 58
12.7. Waveform Chart ------------------------------------------ 59

13 Illustration of IC’s, Transistors and Diodes ------------ 60
14 Wiring Connection Diagram --------------------------------- 61
15 Schematic Diagram Notes ----------------------------------- 63
16 Schematic Diagram--------------------------------------------- 65

16.1. CD SERVO CIRCUIT ----------------------------------- 65
16.2. MAIN CIRCUIT (1/6) ------------------------------------ 66
16.3. MAIN CIRCUIT (2/6) ------------------------------------ 67
16.4. MAIN CIRCUIT (3/6) ------------------------------------ 68
16.5. MAIN CIRCUIT (4/6) ------------------------------------ 69
16.6. MAIN CIRCUIT (5/6) ------------------------------------ 70
16.7. MAIN CIRCUIT (6/6) ------------------------------------ 71
16.8. DECK CIRCUIT------------------------------------------- 72
16.9. PANEL, VOLUME & STANDBY CIRCUIT --------- 73

16.10. POWER CIRCUIT---------------------------------------- 74

16.11. BATTERY (1), BATTERY (2) & MUSIC PORT

CIRCUIT---------------------------------------------------- 75

16.12. USB CIRCUIT--------------------------------------------- 76

17 Printed Circuit Board------------------------------------------ 77

17.1. CD SERVO P.C.B.--------------------------------------- 77
17.2. MAIN P.C.B.----------------------------------------------- 78
17.3. DECK, PANEL, VOLUME & STANDBY P.C.B.--- 79
17.4. POWER, BATTERY (1), BATTERY (2) &

MUSIC PORT P.C.B. ----------------------------------- 80

17.5. USB P.C.B. ------------------------------------------------ 81

18 Terminal Function of IC’s ------------------------------------ 83

18.1. IC7001 (MN6627954AMA) IC SERVO

PROCESSOR -------------------------------------------- 83

18.2. IC7002 (BA5948FPE2) IC 4CH Drive -------------- 84
18.3. IC2100 (RFKWMD55EG) MICRO

PROCESSOR -------------------------------------------- 84

19 Exploded View and Replacement Parts List  ---------- 87

19.1. Exploded View and Mechanical replacement

Parts List --------------------------------------------------- 87

19.2. Electrical Replacement Parts List ------------------- 93