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JVC MX-G70 User Manual

JVC MX-G70
87 pages
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SERVICE MANUAL
No.20920
Mar. 2001
COPYRIGHT 2001 VICTOR COMPANY OF JAPAN, LTD.
MX-G70
COMPACT COMPONENT SYSTEM
MX-G70
Area Suffix
J
C
U.S.A.
Canada
Safety precautions
Important for laser products
Warnings and Cautions
Preventing static electricity
Importance administering
point on the safety
Disassembly method
1-2
1-3
1-3
1-4
1-5
1-6
Adjustment method
Flow of functional operation
until TOC read
Maintenance of laser pickup
Replacement of laser pickup
Description of major ICs
1-26
1-30
1-31
1-31
1-32
Contents
PLAY & EXCHANGE
STANDBY/ON
CD-R
/
RW PLAYBACK
STANDBY
MX-G70
SP-MXG70
CA-MXG70SP-MXG70
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JVC MX-G70 Specifications

General IconGeneral
Frequency Response40Hz - 20kHz
Tuner BandsAM/FM
Remote ControlYes
Input Sensitivity500mV
Signal-to-Noise Ratio70dB
ConnectivityUSB
FunctionsCD Player, Radio
CD Changer Capacity1 Disc
Speakers2
TypeMini System

Summary

Safety and Precautions

General Safety Precautions

Essential safety guidelines for product operation and maintenance.

Laser Product Safety Warnings

Crucial warnings regarding laser radiation hazards and product classification.

Static Electricity Prevention Measures

Procedures to prevent damage from static electricity during handling.

Disassembly Procedures

Main Body and Cover Removal

Steps for disassembling the main chassis, covers, and related boards like tuner.

CD Mechanism Assembly Disassembly

Procedures for removing CD changer, servo, tray, and pick unit assemblies.

Power Supply and Amplifier Components Removal

Procedures for removing power transformer, amplifier, and regulator boards.

Front Panel Components Disassembly

Steps for removing front panel parts like cassette, display, and switch boards.

Adjustment and Maintenance

Adjustment Method Overview

Guide to required instruments, conditions, and precautions for adjustments.

Laser Pickup Maintenance and Replacement

Instructions for cleaning, life assessment, and replacing the laser pickup.

Major IC Descriptions

Details on key integrated circuits, including diagrams and pin functions.

System Diagrams and Schematics

Overall Block Diagram

A comprehensive functional overview of the system's architecture.

Schematic Diagrams - Power Supply Section

Schematic diagrams illustrating the power supply circuitry.

Schematic Diagrams - DC Regulation & Audio Output

Schematics for DC regulation and audio output stages.

Schematic Diagrams - Main Sections

Schematics covering main, tuner, and front panel sections.

Schematic Diagrams - CD & Head Amp Sections

Schematics for CD servo and head amplifier sections.

Printed Circuit Board Layouts

Main Board PCB Layout

Layout diagram of the main printed circuit board.

Amplifier Board PCB Layout

Layout diagram for the regulation and amplifier boards.

Front & CD Servo Board PCB Layouts

Layout diagrams for the front and CD servo control boards.

Parts Lists

Exploded View of General Assembly

Visual guide to the unit's overall assembly with part references.

CD Changer Mechanism Parts List

Detailed parts list for the CD changer mechanism.

Cassette Mechanism Parts List

Detailed parts list for the cassette mechanism assembly.

Electrical Component Lists

Lists of electrical parts for various boards (regulator, main, front).

Packing and Accessories List

List of packing materials and included accessories.

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