RX-D50EE - 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 Music Port ---------------------------- 24
8.5. Disassembly of Front Panel Assembly ------------- 24
8.6. Disassembly of Panel P.C.B., Standby P.C.B.

and Volume P.C.B. --------------------------------------- 25

8.7. Disassembly of Woofer Speaker (SP1)------------- 26
8.8. Disassembly of Woofer Speaker (SP2)------------- 27
8.9. Disassembly of CD Lid---------------------------------- 27

8.10. Disassembly of Deck Mechanism Unit ------------- 28

8.11. Disassembly of Deck P.C.B.--------------------------- 30

8.12. Disassembly of Cassette Lid -------------------------- 30
8.13. Disassembly of Mecha Bottom Cover -------------- 32
8.14. Disassembly of Power P.C.B. ------------------------- 33
8.15. Disassembly of Main P.C.B. --------------------------- 35
8.16. Replacement of Transisor (Q4107)------------------ 36
8.17. Replacement of Power IC (IC4101) ----------------- 38
8.18. Disassembly of CD Mechanism Unit ---------------- 40
8.19. Disassembly of CD Servo P.C.B.--------------------- 40
8.20. Disassembly of Battery (1) P.C.B.-------------------- 41
8.21. Disassembly of Battery (2) P.C.B.-------------------- 42

9 Disassembly and Assembly of Traverse Unit --------- 43

9.1. Disassembling Procedures ---------------------------- 43
9.2. Assembling Procedure---------------------------------- 44

10 Service Position ------------------------------------------------- 46

10.1. Checking & Repairing Deck P.C.B. ------------------ 46
10.2. Checking & Repairing Panel P.C.B. ----------------- 46
10.3. Checking & Repairing Power P.C.B. ---------------- 47
10.4. Checking & Repairing Main P.C.B. ------------------ 47
10.5. Checking & Repairing CD Servo P.C.B. ------------ 49

11 Measurements and Adjustments -------------------------- 50

11.1. Tuner Section --------------------------------------------- 50
11.2. Deck Mechanism Section ------------------------------ 52

12 Voltage Measurement & Waveform Chart--------------- 53

12.1. CD SERVO P.C.B. --------------------------------------- 53
12.2. MAIN P.C.B. (1/2) ---------------------------------------- 54
12.3. MAIN P.C.B. (2/2) ---------------------------------------- 55
12.4. DECK P.C.B. ---------------------------------------------- 55
12.5. PANEL P.C.B. --------------------------------------------- 56
12.6. POWER P.C.B. ------------------------------------------- 56
12.7. Waveform Chart ------------------------------------------ 57

13 Illustration of IC’s, Transistors and Diodes ------------ 58
14 Wiring Connection Diagram --------------------------------- 59
15 Schematic Diagram Notes ----------------------------------- 61
16 Schematic Diagram--------------------------------------------- 63

16.1. CD SERVO CIRCUIT ----------------------------------- 63
16.2. MAIN CIRCUIT (1/6) ------------------------------------ 64
16.3. MAIN CIRCUIT (2/6) ------------------------------------ 65
16.4. MAIN CIRCUIT (3/6) ------------------------------------ 66
16.5. MAIN CIRCUIT (4/6) ------------------------------------ 67
16.6. MAIN CIRCUIT (5/6) ------------------------------------ 68
16.7. MAIN CIRCUIT (6/6) ------------------------------------ 69
16.8. DECK CIRCUIT------------------------------------------- 70
16.9. PANEL, VOLUME & STANDBY CIRCUIT --------- 71

16.10. POWER CIRCUIT---------------------------------------- 72

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

CIRCUIT---------------------------------------------------- 73

17 Printed Circuit Board ------------------------------------------ 74

17.1. CD SERVO & MUSIC PORT P.C.B.----------------- 74
17.2. MAIN P.C.B. ----------------------------------------------- 75

17.3. DECK, PANEL, VOLUME & STANDBY P.C.B.--- 76
17.4. POWER, BATTERY (1) & BATTERY (2)

P.C.B. ------------------------------------------------------- 77

18 Terminal Function of IC’s ------------------------------------ 79

18.1. IC7001 (MN6627954AMA) IC SERVO

PROCESSOR -------------------------------------------- 79

18.2. IC7002 (BA5948FPE2) IC 4CH Drive -------------- 80
18.3. IC2100 (RFKWMD45EG-W) MICRO

PROCESSOR -------------------------------------------- 80

19 Exploded View and Replacement Parts List  ---------- 83

19.1. Exploded View and Mechanical replacement

Parts List --------------------------------------------------- 83

19.2. Electrical Replacement Parts List ------------------- 89