JVC MX-J170V - Tuner Section Schematic

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ABCD E F G

2-7

MX-J170V

FM/TUNER signal

AM signal

Tuner section

SHEET 5/5

TR64

TR63

180(1/2W)

Main Page

Contents1
Area Suffix1
Safety Precautions2
Warning2
Leakage Current Check2
Important for Laser Products3
Class 1 Laser Product3
Reproduction and Position of Labels3
Warning Label3
Preventing Static Electricity4
Grounding to Prevent Damage by Static Electricity4
Ground the Workbench4
Ground Yourself4
Disassembly Method5
Main Body5
Removing the Top Cover and the Side Covers5
Removing the CD Tray Fitting6
Removing the CD Tray Fitting & the VCD Board7
How to Eject the CD Tray Without Turning on Power7
Removing the CD Changer Unit8
Removing the Front Panel Assembly9
Removing the Rear Panel10
Removing the Main Board10
Removing the Heat Sink & Cooling Fan11
Removing the Tuner Board11
Removing the Heat Sink & VCD Power Board12
Removing the Power Transformer12
Removing the Power / CD Switch Board13
Removing the Front Board13
Removing the MIC/Headphone Board13
Front Panel Assembly13
Removing the VCD Board14
Removing the CD Tray14
CD Changer Unit14
Reinstall the CD Tray15
Removing the Sensor Board / the Tray Motor15
Removing the Belt, the CD Servo Board and the Switch Board16
Removing the CD Mechanism Holder Assembly (Mechanism Included)17
Removing the Pickup Unit18
Removing the Motor Board18
Removing the Feed Motor18
Removing the Spindle Motor18
Cassette Mechanism Section19
Removing the R/P Head19
Remove the Erase Head19
Removing the Pinch Roller19
Removing the Motor20
Removing the Mechanism Board20
Removing the Flywheel20
Adjustment Method21
Tuner21
Adjustment Location of Tuner PCB21
OSC Voltage21
FM THD Adjustment22
FM Search Level Adjustment22
AM(MW) I.F Adjustment22
FM Auto Search Level Adjustment22
Cassette Deck23
To Adjust Tape Speed23
To Adjust Playback Lebel/Rec24
Adjust Deck 1 Play Level24
Adjust Deck 2 Play Level/Rec BIAS24
Flow of Functional Operation until TOC Read25
Maintenance of Laser Pickup26
Replacement of Laser Pickup26
Cleaning the Pick up Lens26
Life of the Laser Diode26
Trouble Shooting Guide27
Tray Does Not Close/Open27
No Logo Display27
Check Pick-Up28
Description of Major Ics29
Pin Layout29
Cassette Amp.30
Pll30
Bi-Directional DC Motor Driver31
Fm If/Det am Rf/If/Det32
Function33
8-Bit Single-Chip Microcontroller34
Sound Processor35
8-BIT Serial to Parallel Converter36
Digital Servo Processor37
Dual BTL Power Driver40
Audio Amp.41
Data Amplifier and Laser Supply42
Stereo Filter DAC43
Block Diagrams45
Main Section45
CD & VCD Section46
Standard Schematic Diagrams47
Front Section47
CD Servo Section49
VCD Section50
Tuner Section51
Printed Circuit Boards52
Front Board53
CD Servo Board54
MIC / Headphone Board54
Tuner Board55
VCD Board56
VCD Power Board56
TOP View56
BOTTOM View56
Parts List57
Exploded View of General Assembly and Parts List59
CD Mechanism Assembly and Parts List60
CD Changer Mechanism Assembly and Parts List61
Cassette Mechanism Assembly and Parts List63
Packing Materials and Accessories Parts List77

JVC MX-J170V - Tuner Section Schematic

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