SA-VK680EE, SC-VK680EE - Panasonic Audio Service Manual (repair manual). Page 2

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5.6. USB - Play and Recording ----------------------------- 20

6 Self-Diagnosis and Special Mode Setting -------------- 22

6.1. Service Mode Summary Table ------------------------ 22
6.2. Doctor Mode Table--------------------------------------- 24
6.3. Self-Diagnosis Mode Table  --------------------------- 25
6.4. Service Mode Table (For DVD) ----------------------- 26
6.5. DVD Self Diagnostic Function-Error Code--------- 34
6.6. Sales Demonstration Lock Function ---------------- 38

7 Troubleshooting Guide---------------------------------------- 39

7.1. Troubleshooting Guide for F61 and/or F76 -------- 39
7.2. Basic Troubleshooting Guide for Traverse

Unit (DVD Module P.C.B.)------------------------------ 45

8 Service Fixture & Tools --------------------------------------- 46

8.1. Service Tools and Equipment ------------------------- 46

9 Disassembly and Assembly Instructions --------------- 47

9.1. Disassembly flow chart  -------------------------------- 49
9.2. Main Components and P.C.B. Location ------------ 50
9.3. Disassembly of Top Cabinet--------------------------- 51
9.4. Disassembly of DVD Mechanism Unit

(CR14D) ---------------------------------------------------- 52

9.5. Disassembly of DVD Module P.C.B.----------------- 54
9.6. Disassembly of Rear Panel---------------------------- 54
9.7. Disassembly of Front Panel Assembly ------------- 55
9.8. Disassembly of Mic P.C.B. ----------------------------- 56
9.9. Disassembly of Panel P.C.B., Volume P.C.B.

& Remote Sensor P.C.B. , Side Bar (L) LED
P.C.B. and Side Bar (R) LED P.C.B.----------------- 57

9.10. Disassembly of USB P.C.B. --------------------------- 59

9.11. Disassembly of Music Port P.C.B. ------------------- 60

9.12. Disassembly of CD Lid---------------------------------- 60
9.13. Disassembly of Deck Mechanism Unit ------------- 61
9.14. Disassembly of Deck P.C.B.--------------------------- 62
9.15. Disassembly of Deck Mechanism P.C.B.----------- 62
9.16. Disassembly of Deck Mechanism-------------------- 63
9.17. Disassembly of Cassette Lid -------------------------- 72
9.18. Rectification for Tape Jam Problem ----------------- 72
9.19. Disassembly of D-Amp P.C.B. ------------------------ 73
9.20. Replacement of Audio Digital Power Amp IC

(IC5000) ---------------------------------------------------- 74

9.21. Replacement of Audio Digital Power Amp IC

(IC5200) ---------------------------------------------------- 75

9.22. Disassembly of Main P.C.B. --------------------------- 75
9.23. Disassembly of SMPS P.C.B. ------------------------- 76
9.24. Replacement of Switching Regulator IC

(IC5701) ---------------------------------------------------- 77

9.25. Replacement of Rectifier Diode (D5702)----------- 78
9.26. Replacement of Regulator Diode (D5801)--------- 80
9.27. Replacement of Regulator Diode (D5802)--------- 80
9.28. Replacement of Regulator Diode (D5803)--------- 81
9.29. Disassembly of AC Inlet P.C.B. ----------------------- 82

10 Disassembling and Assembling of Traverse Unit---- 84

10.1. Disassembly Procedures------------------------------- 84
10.2. Assembly Procedures----------------------------------- 85

11 Service Positions ----------------------------------------------- 86

11.1. Checking and Repairing of Main P.C.B. ------------ 86
11.2. Checking and Repairing Panel P.C.B., Deck

P.C.B., Volume P.C.B., Music Port P.C.B. and
Mic P.C.B.  ------------------------------------------------- 86

11.3. Checking and Repairing of D-Amp P.C.B. --------- 89
11.4. Checking and Repairing of AC Inlet P.C.B. &

SMPS P.C.B. ---------------------------------------------- 90

12 Measurements and Adjustments -------------------------- 92

12.1. Cassette Deck -------------------------------------------- 92
12.2. Tape Speed Adjustment-------------------------------- 92
12.3. Bias Voltage Check ------------------------------------- 93
12.4. Bias Frequency Check  -------------------------------- 93

13 Voltage & Waveform Chart ---------------------------------- 94

13.1. DVD Module P.C.B. (1/3) ------------------------------ 94
13.2. DVD Module P.C.B. (2/3) ------------------------------ 95
13.3. DVD Module P.C.B. (3/3) ------------------------------ 96
13.4. Main P.C.B. (1/3)----------------------------------------- 97
13.5. Main P.C.B. (2/3)----------------------------------------- 98
13.6. Main P.C.B. (3/3)----------------------------------------- 99
13.7. Panel P.C.B.---------------------------------------------- 100
13.8. Deck P.C.B. ---------------------------------------------- 100
13.9. Mic P.C.B.------------------------------------------------- 100

13.10. D-Amp P.C.B. -------------------------------------------- 101

13.11. SMPS P.C.B.--------------------------------------------- 102

13.12. Deck Mechanism P.C.B. ------------------------------ 102
13.13. Volume P.C.B. ------------------------------------------- 102
13.14. Waveform Table (1/3) ---------------------------------- 103
13.15. Waveform Table (2/3) ---------------------------------- 104
13.16. Waveform Table (3/3) ---------------------------------- 105

14 Illustration of ICs, Transistor and Diode --------------- 106
15 Block Diagram -------------------------------------------------- 107

15.1. DVD (Audio)---------------------------------------------- 107
15.2. DVD (Servo) --------------------------------------------- 108
15.3. System Control ------------------------------------------ 109
15.4. Audio------------------------------------------------------- 110
15.5. Video------------------------------------------------------- 111
15.6. Deck-------------------------------------------------------- 112
15.7. D-Amp ----------------------------------------------------- 113
15.8. Power ------------------------------------------------------ 114

16 Wiring Connection Diagram ------------------------------- 115
17 Schematic Diagram Notes ---------------------------------- 117
18 Schematic Diagram ------------------------------------------- 119

18.1. DVD Module Circuit ------------------------------------ 119
18.2. Main Circuit----------------------------------------------- 123
18.3. Panel, Side Bar (L) Led & Side Bar (R) Led

Circuit ------------------------------------------------------ 129

18.4. Volume, Music Port, Remote Sensor & Mic

Circuit ------------------------------------------------------ 130

18.5. Deck Circuit ---------------------------------------------- 131
18.6. D-Amp Circuit-------------------------------------------- 132
18.7. SMPS Circuit--------------------------------------------- 134
18.8. USB, Deck Mechanism & AC Inlet Circuit -------- 136

19 Printed Circuit Board----------------------------------------- 137

19.1. DVD Module P.C.B. ------------------------------------ 137
19.2. Main P.C.B.----------------------------------------------- 138
19.3. Panel, Side Bar (L) Led & Side Bar (R) Led

P.C.B. ------------------------------------------------------ 139

19.4. Volume, Music Port, Remote Sensor, Mic &

USB P.C.B. ----------------------------------------------- 140

19.5. Deck, Deck Mechanism & AC Inlet P.C.B. ------- 141
19.6. D-Amp P.C.B. -------------------------------------------- 142
19.7. SMPS P.C.B.--------------------------------------------- 143

20 Terminal Function of ICs ------------------------------------ 145

20.1. IC2801 (RFKWMVK480GC): IC

MICROPROCESSOR --------------------------------- 145

20.2. IC6601(C0HBB0000057): IC FL Driver ----------- 145

21 Exploded View and Replacement Parts List---------- 147