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MX-J170V
JVC MX-J170V User Manual
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MX-J170V
1-41
TD
A7295 (AIC1, 2) :
A
udio amp.
2.Block Diagram
1.Pin layout
12345
6789
1
0
STAND-BY GND
KA3082
1
1
1
1
2
1
1
3
4
5
INVERTING INPUT
NON INVERTING
INPUT
SUR
N.C.
BOOT STARD
+US(SIGNAL)
-US(SIGNAL)
STAND-BY
MUTE
N.C.
N.C.
+US(POWER)
-US(POWER)
OUT
+
+
-
+
-
+
+
-
IN+
IN-
+US
-US
OUTPUT
BOOTSTRAP
BOOTSTRAP
MOS OUTPUT STAGE
SHORT CIRCUIT
PROTECTION
MOS GAIN &
LEVEL SHIFTING
STAGE
BIPOLAR
TRANSCONDUCTANCE
INPUT STAGE
40
42
Table of Contents
Contents
1
Area Suffix
1
Safety Precautions
2
Warning
2
Leakage Current Check
2
Important for Laser Products
3
Class 1 Laser Product
3
Reproduction and Position of Labels
3
Warning Label
3
Preventing Static Electricity
4
Grounding to Prevent Damage by Static Electricity
4
Ground the Workbench
4
Ground Yourself
4
Disassembly Method
5
Main Body
5
Removing the Top Cover and the Side Covers
5
Removing the CD Tray Fitting
6
Removing the CD Tray Fitting & the VCD Board
7
How to Eject the CD Tray Without Turning on Power
7
Removing the CD Changer Unit
8
Removing the Front Panel Assembly
9
Removing the Rear Panel
10
Removing the Main Board
10
Removing the Heat Sink & Cooling Fan
11
Removing the Tuner Board
11
Removing the Heat Sink & VCD Power Board
12
Removing the Power Transformer
12
Removing the Power / CD Switch Board
13
Removing the Front Board
13
Removing the MIC/Headphone Board
13
Front Panel Assembly
13
Removing the VCD Board
14
Removing the CD Tray
14
CD Changer Unit
14
Reinstall the CD Tray
15
Removing the Sensor Board / the Tray Motor
15
Removing the Belt, the CD Servo Board and the Switch Board
16
Removing the CD Mechanism Holder Assembly (Mechanism Included)
17
Removing the Pickup Unit
18
Removing the Motor Board
18
Removing the Feed Motor
18
Removing the Spindle Motor
18
Cassette Mechanism Section
19
Removing the R/P Head
19
Remove the Erase Head
19
Removing the Pinch Roller
19
Removing the Motor
20
Removing the Mechanism Board
20
Removing the Flywheel
20
Adjustment Method
21
Tuner
21
Adjustment Location of Tuner PCB
21
OSC Voltage
21
FM THD Adjustment
22
FM Search Level Adjustment
22
AM(MW) I.F Adjustment
22
FM Auto Search Level Adjustment
22
Cassette Deck
23
To Adjust Tape Speed
23
To Adjust Playback Lebel/Rec
24
Adjust Deck 1 Play Level
24
Adjust Deck 2 Play Level/Rec BIAS
24
Flow of Functional Operation until TOC Read
25
Maintenance of Laser Pickup
26
Replacement of Laser Pickup
26
Cleaning the Pick up Lens
26
Life of the Laser Diode
26
Trouble Shooting Guide
27
Tray Does Not Close/Open
27
No Logo Display
27
Check Pick-Up
28
Description of Major Ics
29
Pin Layout
29
Cassette Amp.
30
Pll
30
Bi-Directional DC Motor Driver
31
Fm If/Det am Rf/If/Det
32
Function
33
8-Bit Single-Chip Microcontroller
34
Sound Processor
35
8-BIT Serial to Parallel Converter
36
Digital Servo Processor
37
Dual BTL Power Driver
40
Audio Amp.
41
Data Amplifier and Laser Supply
42
Stereo Filter DAC
43
Block Diagrams
45
Main Section
45
CD & VCD Section
46
Standard Schematic Diagrams
47
Front Section
47
CD Servo Section
49
VCD Section
50
Tuner Section
51
Printed Circuit Boards
52
Front Board
53
CD Servo Board
54
MIC / Headphone Board
54
Tuner Board
55
VCD Board
56
VCD Power Board
56
TOP View
56
BOTTOM View
56
Parts List
57
Exploded View of General Assembly and Parts List
59
CD Mechanism Assembly and Parts List
60
CD Changer Mechanism Assembly and Parts List
61
Cassette Mechanism Assembly and Parts List
63
Packing Materials and Accessories Parts List
77
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JVC MX-J170V Specifications
General
Brand
JVC
Model
MX-J170V
Category
Speaker System
Language
English
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