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SA-AK240E
Page 5 (Specific Handling and Repair Precautions)
Panasonic SA-AK240E - Specific Handling and Repair Precautions; AC Mains Lead Safety; Pre-Repair and Adjustment Safety
104 pages
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1.2. Caution
for
AC
Mains
Lead
1.3. Before
repair
and
adjustment
Discon
nect
AC
power,
discha
rge
Power
Capacitors
C5101
,
C5104
,
C5171
,
C5172
,
C5920
,
C5940
and
C5950
throug
h
a
10
Ω
,5
W
5
SA-AK240E
/
SA-AK240EB
/
SA-AK240EG
4
6
Table of Contents
Main Page
Default Chapter
1
Specifications
1
Table of Contents
2
1 Safety Precautions
4
General Guidelines
4
Caution for AC Mains Lead
5
Before Repair and Adjustment
5
Protection Circuitry
6
2 Prevention of Electro Static Discharge (ESD) to Electrostatically Sensitive (ES) Devices
6
3 Handling Precautions for Traverse Deck
7
4 Precaution of Laser Diode
8
5 Handling the Lead-Free Solder
9
About Lead Free Solder (Pbf)
9
6 New Features
10
CRS1 Mechanism Overview
10
Music Port
12
7 Accessories
13
8 Operating Instructions Procedures
14
9 Self Diagnosis and Special Mode Setting
16
Special Mode Table
16
Error Code Table
18
10 Assembling and Disassembling
22
Caution
22
Disassembly Flow Chart
23
Main Parts Location
24
Disassembly of Top Cabinet
25
Disassembly of Rear Panel
25
Disassembly of CD Changer Unit (CRS1)
25
Disassembly of Main P.C.B
27
Disassembly of Transformer P.C.B
27
Disassembly of Power P.C.B
28
Disassembly of Front Panel Unit
29
Disassembly for Panel P.C.B
30
Disassembly of Deck Mechanism Unit
31
Disassembly of Deck P.C.B
31
Disassembly of Traverse Unit
31
Disassembly of Optical Pickup Unit (CD Mechanism)
33
Disassembly of Deck Mechanism
36
Replacement for Cassette Lid
38
Rectification for Tape Jam Problem
39
11 Service Fixture and Tools
40
12 Service Positions
40
Checking and Repairing of Main P.C.B
40
Checking and Repairing of Transformer P.C.B
41
Checking and Repairing of Panel, Deck & Deck Mechanism P.C.B
42
Checking and Repairing of Power P.C.B
43
13 Adjustment Procedures
44
Cassette Deck Section
44
Tuner Section
45
Adjustment Point
46
14 Voltage and Waveform Chart
47
CD Servo P.C.B. & Main P.C.B
47
Power P.C.B. & Transformer P.C.B
49
Waveform Chart
50
15 Wiring Connection Diagram
52
16 Block Diagram
53
Schematic Diagram
57
Notes of Schematic Diagrams
57
A) CD Servo Circuit
59
B) Main (Tuner) Circuit
61
B) Main Circuit
63
C) Panel Circuit
67
D) Transformer Circuit
69
H) Power Circuit
71
F) Deck Circuit & (G) Deck Mechanism Circuit
73
18 Printed Circuit Board
75
A) CD Servo P.C.B
76
B) Main
77
B) Main P.C.B
77
C) Panel P.C.B
78
D) Transformer
79
D) Transformer P.C.B
79
E) Power
80
E) Power P.C.B
80
F) Deck P.C.B. & (G) Deck Mechanism P.C.B
81
19 Illustration of Ics, Transistors and Diodes
83
20 Terminal Function of IC's
84
IC7001 (MN6627954MA) Servo Processor,Digital Signal Processor/Digital Filter and D/A Converter
84
IC7002 (BA5948FPE2) IC 4CH Drive
85
IC2801 (C2CBYY000053) System Microprocessor
85
21 Exploded Views
87
Cabinet Parts Location
89
Deck Mechanism Parts Location (RAA4502-S)
91
Packaging
93
22 Replacement Parts List
95
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