Panasonic sa vk 680 pu service manual

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P86090601 90E

Service Manual

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COMPATIBLE
P l I V E II

v I D E o" _DITALVIDEO
Remote
Control
SB-PF680 SB-WAK78O SB-PF680

SA-VK680

DVD Stereo System

Model No. SA-VK680PU
Product Color: (K)...Black Type

P560905054AE

Please file and use this service manual together with the service manual for CR14D, Order No.

A WARNING

This service information is designed for experienced repair technicians only and is not designed for use by the general public

It does not contain warnings or cautions to advise non-technical individuals of potential dangers in attempting to service a product.
Products powered by electricity should be serviced or repaired only by experienced professional technicians Any attempt to service
or repair the product or products dealt with in this service information by anyone else could result in serious injury or death.

IMPORTANT SAFETY NOTICE

There are special components used in this equipment which are important for safety. These parts are marked by A in the Schematic
Diagrams, Circuit Board Diagrams, Exploded Views and Replacement Parts List. It is essential that these critical parts should be replaced
with manufacturers specified parts to prevent shock, lire or other hazards. Do not modify the original design without permission of

manufacturer.

TABLE OF CONTENTS
PAGE

1 Safety Precautions ----------------------------------------------- 4
1.1. GENERAL GUIDELINES-
1.2. Before Use -----------------
1.3. Before Repair and Adjustment
1.4. Protection Circuitry -------
1.5. Safety Parts Information

2 Warning -----------------------------
2.1. Prevention of Electrostatic Discharge (ESD)

to Electrostatic Sensitive (ES) Devices
2.2. Precaution of Laser Diode -----------------
2.3. Service caution based on Legal restrictions -------- 8

Panasonic

PAGE

2.4. Handling Precautions for Traverse Unit -------------- 9

3 Service Navigation -------
3.1. Service Information

4 Specifications ------------------------------------
5 Location of Controls and Components--
5.1. Main Unit Key Button Operation---
5.2. Remote Control Key Button Operation
5.3. Disc Information -----------------------------
5.4. Using the Music Port
5.5. DivX VOD Content----
5.6. USB - Play and Recording ----------------------------- 2O

© Panasonic Corporation 2009. All rights reserved.
Unauthorized copying and distribution is a violation
of law.

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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 -- --39

7 Troubleshooting Guide -------------------------- --40

7.1. Troubleshooting Guide for F61 and/or F76 -------- 40
7.2. Basic Troubleshooting Guide for Traverse

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

8 Service Fixture & Tools ----------- 47
8.1. Service Tools and Equipment 47
9 Disassembly and Assembly Instructions- --48
9.1. Disassembly flow chart ------------------ ---50
9.2. Main Components and P.C.B. Location - ---51

9.3. Disassembly of Top Cabinet ------------- 52
9.4. Disassembly of DVD Mechanism Unit
(CR14D) -----------------------------------
9.5. Disassembly of DVD Module P.C.B.
9.6. Disassembly of Rear Panel -----------
9.7. Disassembly of Front Panel Assembly --
9.8. Disassembly of Mic P.C.B. ----------------------------- 57
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. ----------------- 58
9.10. Disassembly of USB P.C.B.
9.11. Disassembly of Music Port P.C.B. --
9.12. Disassembly of CD Lid --------------------
9.13. Disassembly of Deck Mechanism Unit --
9.14. Disassembly of Deck P.C.B.--
9.15. Disassembly of Deck Mechanism P.C.B
9.16. Disassembly of Deck Mechanism ------

53

56

9.17. Disassembly of Cassette Lid --------- 73
9.18. Rectification for Tape Jam Problem --73
9.19. Disassembly of D-Amp P.C.B. ------------------------ 74
9.20. Replacement of Audio Digital Power Amp IC
(|C5000) ---------------------------------------------------- 75
9.21. Replacement of Audio Digital Power Amp IC
(|CS200) -- 76

9.22. Disassembly of Main P.C.B

9.23. Disassembly of SMPS P.C.B.

9.24. Replacement of Switching Regulator IC
(|C5701) ---------------------------------------------------- 79

77

9.25. Replacement of Rectifier Diode (D5702) ----- ---80
9.26. Replacement of Regulator Diode (D5801)--- ---81
9.27. Replacement of Regulator Diode (D5802)--- 82
9.28. Replacement of Regulator Diode (D5803)--- 82

9.29. Disassembly of AC Inlet P.C.B. ---------

9.30. Disassembly of Voltage Selector P.C.B.-
10 Disassembling and Assembling of Traverse Unit-

10.1. Disassembly Procedures

10.2. Assembly Procedures----

11 Service Positions --------------------------------- --88
11.1. Checking and Repairing of Main P.C.B. - 88
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. -------------------------------------- ---88
11.3. Checking and Repairing of D-Amp P.C.B. ---90
11.4. Checking and Repairing of AC Inlet P.C.B. &

SMPS P.C.B. ---------------------------------------------- 92

12 Measurements and Adjustments
12.1. Cassette Deck ------------------
12.2. Tape Speed Adjustment-
12.3. Bias Voltage Check ------
12.4. Bias Frequency Check -

13 Voltage & Waveform Chart
13.1. DVD Module P.C.B. (1/3)
13.2. DVD Module P.C.B. (2/3)
13.3. DVD Module P.C.B. (3/3) -
13.4. Main P.C.B. (1/3)»
13.5. Main P.C.B. (2/3)-
13.6. Main P.C.B. (3/3)-
13.7. Panel P.C.B. -------
13.8. Deck P.C.B.
13.9. Mic P.C.B.--

13.10. D-Amp P.C.B.
13.11. SMPS P.C.B.-
13.12. Deck Mechanism P.C.B.
13.13. Volume P.C.B. -------
13.14. Waveform Table (1/3)-
13.15. Waveform Table (2/3)-
13.16. Waveform Table (3/3)-

14 Illustration of ICs, Transistor and Diode-

15 Block Diagram ------------------------------------
15.1. DVD (Audio)--
15.2. DVD (Servo) -
15.3. System Control-
15.4. Audio --------------
15.5.
15.6.
15.7.
15.8.

16 Wiring Connection Diagram -

17 Schematic Diagram Notes- 119
18 Schematic Diagram ---------- ...121
18.1. DVD Module Circuit ...121
18.2. Main Circuit -------------- ...125
18.3. Panel. Side Bar (L) Led & Side Bar (R) Led
Circuit ------------------------------------------------------ 131
18.4. Volume, Music Port, Remote Sensor & Mic
Circuit ------- ".132
18.5. Deck Circuit -- ...133
18.6. D-Amp Circuit ...134
18.7. SMPS Circuit- ---136

18.8. USB, Deck Mechanism, AC Inlet 8 Voltage
Selector Circuit ------------------------------------------ 138

19 Printed Circuit Board ----- ---139
19.1. DVD Module P.C.B. ---139
19.2. Main P.C.B. ----------------------------------------------- 140
19.3. Panel. Side Bar (L) Led & Side Bar (R) Led

P.C.B.-- ---141
19.4. Volume, Music Port, Remote Sensor, Mic &

USB P.C.B. ----------------------------------------------- 142
19.5. Deck. Deck Mechanism, AC Inlet 8 Voltage

Selector P.C.B. ------------------------------------------ 143
19.6. D-Amp P.C.B. ---144
19.7. SMPS P.C.B.- ---145

20 Terminal Function of ICS ------------------------------------ 147
20.1. |C2801 (RFKWMVK480GC): IC

MICROPROCESSOR 147

20.2. |CGGO1(COHBBOOOOO§7 IC FL Driver