Panasonic SC-AK48, Руководство по обслуживанию

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D/A converter MASH (1bit DAC)
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GENERAL
Power supply : AC110V/127V/220V/
230-240V, 50/50Hz
Power consumption 220W
Power consumption in standby
mode
Eco mode on 0.8W
Eco mode off 14W
Dimensions (WxHxD) 270x331x338mm
1 Accessories 3
2 Before Repair 3
3 Protection Circuitry 3
4 Handling Precautions for Traverse Deck 4
4.1. Handling the traverse deck (optical pickup) 4
4.2. Grounding for electrostatic breakdown prevention 4
4.3. Caution when Replacing the Traverse Deck 4
5 Precaution of Laser Diode 5
6 Location of Controls 6
7 Location of Controls for Remote Control Transmitter 7
8 Operation Checks and Component Replacement Procedures 8
8.1. Checking for the main P.C.B. 8
8.2. Disassembly for the CD changer ass’y 9
8.3. Checking for the unit operational condition 11
8.4. Replacement for the traverse deck ass’y 13
8.5. Replacement for the disc tray 16
8.6. Disassembly and reassembly for mechanism base drive
unit 18
8.7. Replacement for the motor ass’y 24
8.8. Replacement for the pinch roller ass’y and head block 25
8.9. Replacement for the CD motor ass’y, capstan belt A,
capstan belt B and winding belt 27
8.10. Replacement for the components parts on the mechanism
P.C.B. 29
8.11. Replacement for the cassette lid ass’y 29
8.12. Measure for tape trouble 30
9 Checking Procedure for Self-operation of Cassette
Mechanism Ass’y 31
9.1. Operation Check Providing with Cassette Tape 31
9.2. Operation Check Not Provided with Cassette Tape 31
Weight 9.0kg
Notes:
1. Specifications are subject to change without notice.
Weight and dimensions are approximate.
2. Total harmonic distortion is measured by the digital spectrum
analyzer.
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SYSTEM
SC-AK48 :
Main unit : SA-AK48
Speakers : SB-AK48
10 Self-Diagnostic Display Function 32
11 Description of Error Code 33
11.1. Error Detection for Cassette Mechanism block 33
11.2. Error Detection for CD/Changer block 33
11.3. Error Detection for Cassette Mechanism block 33
12 CD Test Mode Function 34
13 Measurement and Adjustments 35
13.1. Tuner Section 35
13.2. Cassette Deck Section 36
14 Illustration of ICs, Transistors and Diodes 38
15 Schematic Diagram 39
15.1. Schematic Diagram Notes 39
15.2. Schematic Diagram 40
16 Printed Circuit Board Diagram 58
17 Block Diagram 69
18 Troubleshooting Guide 77
19 Wiring Connection Diagram 79
20 Terminal Function of ICs 81
20.1. IC600 (M38199MF227):System Control and FL Driver 81
20.2. IC701 (AN8839NSBE2):Servo Amp 81
20.3. IC702 (MN662790RSC):Servo Processor/Digital Signal
Processor/Digital Filter/D/A converter 81
20.4. IC703 (AN8739SBE2):Focus Coil/Tracking Coil/Traverse
Motor/SpindleMotor Drive 82
21 Replacement Parts List 83
22 Cabinet Parts Location 95
23 Mechanism Parts Location 97
24 CD Mechanism Parts Location 99
25 Packaging 100
CONTENTS
Page Page
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SA-AK48