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MX-GA77
JVC MX-GA77 User Manual
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MX-GA77
3-5
Item
Parts number
Parts name
Area
A
Parts list (General assembly)
Q'ty
Description
Block No.
M1MM
33
AH64-02273D
REAR CABINET
1
34
AH62-00042A
HEAT SINK
1
4959
36
AH61-40014A
SUPP
ORT RIVET
1
37
AH95-50001A
LATCH ASSY
2
38
AH61-80030A
DAMPER ASSY
2
39
AH61-00552A
DOOR SPRING A
1
40
AH61-00553A
DOOR SPRING B
1
41
AH64-00462C
BADGE JVC
1
42
AH64-30416E
BOTTOM CABINET
1
43
AH64-30390K
T
O
P CABINET
1
44
AH69-20031A
CUSHIO
N
FOOT
2
45
AH63-00250B
HEAT SINK C
OVER
1
46
AH62-00080A
HEAT SINK
1
MAIN
47
AH26-00228A
TRANS P
OWER
A
1
120V 40.5/40/4
53
AH07-00098A
VF DISPLAY
1
54
-------------------
CASSETTE MECHA
1
CWM43FF09
56
AH39-00258J
POWER CORD
A
1
57
AH40-00051A
TUNER PACK
1
KST-MJ011MS0-60
32
AH61-01262A
H SINK BRAKET
2
70
72
Table of Contents
Table of Contents
1
Area Suffix
1
Safety Precautions
2
Warning
2
Importance Administering Point on the Safety
3
Fuse Board (Forward Side)
3
Power Supply Board (Forward Side)
3
Preventing Static Electricity
4
Grounding to Prevent Damage by Static Electricity
4
Ground the Workbench
4
Ground Yourself
4
Removing the CD Tray Fitting
5
Removing the CD Changer Unit
5
Removing the Metal Cover
5
Disassembly Method
5
Removing the Front Panel Assembly
6
Removing the Heat Sink & Amp. Board
7
Removing the Tuner Board
7
Removing the Rear Panel
7
Removing the Main Board
8
Removing the Power Cord
8
Removing the Power Ics
8
Removing the Power Transformer
8
Removing the CD Switch Board
9
Removing the Front Board
9
Removing the Headphone Jack Board
9
Removing the Cassette Mechanism Assembly
9
Reinstall the CD Tray
10
Removing the CD Tray
10
CD Changer Unit
10
Removing the Sensor Board
11
Removing the Turn Tray Motor
11
Removing the Belt, the CD Board and the Switch Board
12
Removing the CD Mechanism Holder Assembly (Mechanism Included)
13
CD Mechanism Section
14
Removing the Pickup Unit
14
Removing the Motor Board
14
Removing the Feed Motor
14
Cassette Mechanism Section
15
Removing the R/P Head
15
Remove the Erase Head
15
Remove the Pinch Roller
15
Removing the Flywheel
16
Removing the Mechanism Board
16
Removing the Motor
16
Removing the Side Panel
17
Removing the Side Speaker
17
Speaker Section
17
Wiring Connection
18
Color Codes
18
Adjustment Method
19
Tuner
19
Adjustment Location of Tuner PCB
19
OSC Voltage
19
FM THD Adjustment
20
FM Search Level Adjustment
20
AM(MW) I.F Adjustment
20
IF CENTER and THD Adjustment
20
Adjust Deck 1 Play Level
21
Cassette Deck
21
To Adjust Plabyback Level/Rec
21
To Adjust Tape Speed
21
Adjust Deck 2 Play Level/Rec BIAS
22
Flow of Functional Operation until TOC Read
23
Cleaning the Pick up Lens
24
Life of the Laser Diode
24
Semi-Fixed Resistor on the APC PC Board
24
Maintenance of Laser Pickup
24
Replacement of Laser Pickup
24
Troubleshooting
25
Power Malfunction
25
No Output
25
Tuner Malfunction (FM/AM)
26
Tape
26
CD
27
Power on and CD Function
27
CD - MP3 Parts
28
LC876764 (UIC1) : Microcontroller
29
Pin Layout
29
Block Diagram
29
Description of Major Ics 1-29~42
29
Pin Function
30
KA9258D (IC301) : 4-Ch Motor Driver
31
KB9226 (IC101) : RF Amp. & Servo Signal Processor
32
5L9290 (IC201) : Digital Signal Processor for CDP
34
HA12237 (JIC01) : Audio Signal Processor
36
KS9274 (IC601) : CD-MP3 Decoder
37
TDA7442D (EIC01) : Audio Processor
38
L4959 (PIC02) : Voltage Regulator
39
M11L1644 (Ic602) : Dram
40
STK403-070 (FIC01) : Power Amp.
41
STK412-020 (WIC01) : Power Amp.
41
Pt8300 (Uic03, Uic04) : Dram
42
Compact Component System
45
Block Diagram
47
Standard Schematic Diagrams
48
Main Section
48
FL Display & System Control Section
50
CD Section
54
Printed Circuit Boards
58
Main Board
58
Front Board
60
Power Supply Board
65
Parts List
67
Exploded View of General Assembly and Parts List
68
CD Changer Mechanism
68
Parts List (General Assembly)
70
Speaker Box
72
CD Changer Mechanism Assembly and Parts List
73
Cassette Mechanism Assembly and Parts List
75
Electrical Parts List (Main Board)
77
Electrical Parts List (Front Board)
81
Electrical Parts List (Amp. Board)
83
Packing Materials and Accessories Parts List
88
Parts List (Packing)
89
Parts List (Accessories)
89
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JVC MX-GA77 Specifications
General
Brand
JVC
Model
MX-GA77
Category
Stereo System
Language
English
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