Mass 7.5 kg
n SYSTEM
SC-AK220 (GCP) Music center: SA-AK220 (GCP)
Speaker: SB-AK220 (P)
1 Before Use
4
2 Before Repair and Adjustment
4
3 Protection Circuitry
4
4 Prevention of Electro Static Discharge (ESD) to
Electrostatically Sensitive (ES) Devices
4
5 Handling the Lead-free Solder
5
5.1. About lead free solder (PbF)
5
6 Handling Precautions For Traverse Deck
6
7 Precaution of Laser Diode
7
8 Accessories
8
9 Operation Procedures
9
10 Disassembly and Assembly of Main Component
10
10.1. Disassembly flow chart
10
10.2. Disassembly of Top Cabinet and Rear Panel
11
10.3. Disassembly of CD Mechanism Unit
13
10.4. Disassembly Main P.C.B., Transformer P.C.B., Voltage
Selector P.C.B. & Power P.C.B.
14
10.5. Disassembly of Panel P.C.B. & Tact Switch P.C.B.
15
10.6. Disassembly of Deck Mechanism Unit & Deck P.C.B.
16
10.7. CD Mechanism Main Component Replacement
Procedures
16
10.8. Replacement for the pinch roller ass 馳 and head block
29
10.9. Replacement for the Deck motor ass 馳, capstan belt A,
capstan belt B and winding belt
30
10.10. Replaceme nt for the cassette lid ass 馳
33
10.11. Counter- measure for tape trouble
33
11 Service Position
34
11.1. Checking Procedure
34
11.2. Checking the Main P.C.B., Power P.C.B., Transformer
P.C.B. and Voltage Selector P.C.B.
34
11.3. Checking the Panel P.C.B., Tact Switch P.C.B., Deck
P.C.B. & Deck Mechanism P.C.B.
35
12 Description of Error Code
36
12.1. Abnormality detection for Deck Mechanism block
36
12.2. Abnormality detection for CD/Changer block
36
12.3. Power supply related error detection
36
13 Self-Diagnostic Function
37
Notes:
1. Specifications are subject to change without notice. Mass and
dimensions are approximate.
2. Total harmonic distortion is measured by the digital spectrum
analyzer.
3. The labels “HIGH” and “LOW” on the rear of the speakers refer
to High frequency and Low frequency.
13.1. Self-diagnostic display
37
13.2. How to enter the Self-Diagnostic Function
37
13.3. Cassette Mechanism Test (For error code H01, H02, H03,
F01, F02)
37
13.4. CD Mechanism Test (F15, F26, F16, F17, F27, F28, F29,
H15)
38
13.5. To clear all Error code
38
13.6. How to get out from Self-Diagnostic function
38
13.7. Power Amplifier Failure (F61)
38
14 CD Test Mode Function
39
14.1. How to set CD test mode
39
14.2. CD Automatically Adjustment result indication
39
15 Measurements and Adjustments
40
15.1. Cassette Deck Section
40
15.2. Tuner Section
40
15.3. Alignment Points
41
16 Block Diagram
42
17 Schematic Diagram
49
17.1. (A) CD Servo Circuit
50
17.2. (B) Tuner/Main Circuit
52
17.3. (B) Main Circuit
53
17.4. (C) Panel Circuit & (D) Tact Switch Circuit
58
17.5. (F) CD Detect Circuit, (G) Spindle Position Circuit & (H)
CD Loading Circuit
60
17.6. (E) Transformer Cuircuit & (L) Voltage Selector Circuit
61
17.7. (I) Power Circuit
62
17.8. (J) Deck Circuit & (K) Deck Mechanism Circuit
63
18 Printed Circuit Board
65
18.1. (A) CD Servo P.C.B. (Side A & Side B)
65
18.2. (B) Main P.C.B.
67
18.3. (C) Panel P.C.B.
69
18.4. (D) Tact P.C.B. & (M) Voltage Selector P.C.B.
71
18.5. (E) Transformer P.C.B.
72
18.6. (F) CD Detect P.C.B., (G) Spindle Position P.C.B., (H) CD
Loading P.C.B. & (L) Tuner Pack P.C.B.
74
18.7. (I) Power P.C.B.
75
18.8. (J) Deck P.C.B. & (K) Deck Mechanism P.C.B.
77
CONTENTS
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SA-AK220GCP
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