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JVC MX-G880V

JVC MX-G880V
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1-1
MX-G950V/MX-G880V
MX-G850V/MX-G750V
SERVICE MANUAL
COMPACT COMPONENT SYSTEM
No.21099
Jul. 2002
COPYRIGHT 2002 VICTOR COMPANY OF JAPAN, LTD.
MX-G950V/MX-G880V
MX-G850V/MX-G750V
Area Suffix
UN----------------------- Asean
US ----------------- Singapore
UX---------------Saudi Arabia
Safety precautions
Preventing static electricity
Important for laser products
Disassembly method
Adjustment method
Contents
Flow of functional operation
until TOC read (CD)
Maintenance of laser pickup
Replacement of laser pickup
Description of major ICs
1-2
1-3
1-4
1-5
1-28
1-33
1-34
1-34
1-35~56
COMPACT
DIGITAL VIDEO
COMPACT
DIGITAL AUDIO
MX-G950V/MX-G880V
MX-G850V/MX-G750V
MX-G750V
Area Suffix
UN----------------------- Asean
MX-G880V
Area Suffix
U-----------------Other Areas
UN----------------------- Asean
UX---------------Saudi Arabia
MX-G950V/MX-G850V
CA-MXG950V
CA-MXG850V
CA-MXG880V
CA-MXG750V

Table of Contents

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JVC MX-G880V Specifications

General IconGeneral
BrandJVC
ModelMX-G880V
CategorySpeaker System
LanguageEnglish

Summary

Safety precautions

Leakage current check (Electrical shock hazard testing)

Tests to ensure product safety after re-assembly, checking for electrical shock hazards.

Alternate check method

Alternative procedure for checking leakage current using an AC voltmeter and resistor-capacitor network.

Preventing static electricity

Grounding to prevent damage by static electricity

Measures to prevent damage to optical pickup (laser diode) from electrostatic discharge (ESD).

Handling the optical pickup

Guidelines for handling the optical pickup, including shipping precautions and tester usage.

Important for laser products

CLASS 1 LASER PRODUCT

Classification of the product as a Class 1 Laser Product, indicating safety under normal operating conditions.

CAUTION: Use of controls, adjustments or performance of procedures other than those specified herein may result in hazardous radiation exposure.

Warning against using controls or procedures not specified, which may cause hazardous radiation exposure.

Disassembly method

Removing the metal cover

Procedure to remove the outer metal cover from the main body of the unit.

Removing the CD changer mechanism assembly

Steps to detach the CD changer mechanism assembly from the main unit.

Removing the front panel assembly

Procedure for removing the front panel assembly after other components are detached.

Removing the tuner board

Steps to disconnect and remove the tuner board from the main chassis.

Removing the main board

Procedure for safely disconnecting and removing the main board from the unit.

Removing the power board

Steps to disconnect and remove the power board from the main chassis.

Removing the amplifier board voltage board heat sink

Procedure for detaching the amplifier board, voltage board, and heat sink assembly.

Removing the power transformer assembly

Steps to disconnect and remove the power transformer assembly from the unit.

Front panel assembly

Removing the cassette mechanism assembly

Steps to remove the cassette mechanism from the front panel assembly.

Removing the display system control board

Procedure for disconnecting and removing the display system control board.

Disassembly method

Removing the front cover

Procedure for removing the front cover of the speaker unit.

Removing the woofer speaker

Steps to detach and remove the woofer speaker from the speaker enclosure.

Woofer speaker section

Removing the front cover

Procedure for removing the front cover of the woofer speaker.

Removing the Rear speaker

Removing the Rear cover

Steps to remove the rear cover of the speaker assembly.

CD Changer Mechanism Type:VC3 Section

Removing the CD Servo control board

Procedure for removing the CD servo control board.

Removing the CD tray assembly

Steps to detach and remove the CD tray assembly from the mechanism.

Cassette mechanism section

Removing the playback,recording and eraser heads

Steps for removing the playback, recording, and eraser heads from the cassette mechanism.

Adjustment method

Measurement instruments required for adjustment

List of necessary instruments for performing adjustments on the audio system.

Arrangement of adjusting positions

Diagram showing the locations of adjustment points within the cassette mechanism unit.

Flow of functional operation until TOC read

Maintenance of laser pickup

Replacement of laser pickup

Procedure for replacing the laser pickup unit when its life has expired or it malfunctions.

Description of major ICs

2. Pin Function

Detailed description of the function of each pin for the AN7345 IC.

SCHEMATIC DIAGRAMS

Block diagram

Overall block diagram showing the main functional units and their interconnections.

Standard schematic diagrams

Detailed schematic diagrams for different sections of the audio system.

PARTS LIST

[ MX-G950 V ]

List of parts for the MX-G950V model, including general assembly and specific sections.

Exploded view of general assembly and parts list

Exploded diagram showing the general assembly and numbered parts for identification.

Speaker assembly and parts list

List of parts for the SP-XG950V speaker assembly, including part numbers and descriptions.

CD changer mechanism assembly and parts list

Exploded view and parts list for the CD changer mechanism assembly.

Cassette mechanism assembly and parts list

Exploded view and parts list for the cassette mechanism assembly.

Electrical parts list (Power board)

List of electrical components found on the power board, including part numbers and values.

PARTS LIST

[ MX-G880 V ] [ MX-G850 V ]

List of parts for MX-G880V and MX-G850V models, covering general assemblies and specific components.

Exploded view of general assembly and parts list

Exploded diagram showing the general assembly and numbered parts for identification.

Speaker assembly and parts list

List of parts for SP-XG880V and SP-XG850V speaker assemblies, including part numbers.

CD changer mechanism assembly and parts list

Exploded view and parts list for the CD changer mechanism assembly.

CD mechanism assembly and parts list

Exploded view and parts list for the CD mechanism assembly.

Cassette mechanism assembly and parts list

Exploded view and parts list for the cassette mechanism assembly.

Electrical parts list (Power board)

List of electrical components for the power board, including part numbers, remarks, and area.

Electrical parts list (Input board)

List of electrical components for the input board, including part numbers, remarks, and area.

Electrical parts list (Front board)

List of electrical components for the front board, including part numbers, remarks, and area.

Electrical parts list (CD board)

List of electrical components for the CD board, including part numbers, remarks, and area.

Electrical parts list (VCD board)

List of electrical components for the VCD board, including part numbers, remarks, and area.

Electrical parts list (Tuner board)

List of electrical components for the tuner board, including part numbers, remarks, and area.

Electrical parts list (CD switch board)

List of electrical components for the CD switch board, including part numbers, remarks, and area.

Electrical parts list (Head amplifier & mechanism control board)

List of electrical components for the head amplifier and mechanism control board.

Packing materials and accessories parts list

Illustrations and list of packing materials and accessories for product packaging.

PARTS LIST

[ MX-G750 V ]

List of parts for the MX-G750V model, covering general assemblies and specific components.

Exploded view of general assembly and parts list

Exploded diagram showing the general assembly and numbered parts for identification.

Parts list (General assembly)

List of general assembly parts for MX-G950V/MX-G880V/MX-G850V models.

Speaker assembly and parts list

List of parts for the SP-MXG750V speaker assembly, including part numbers and descriptions.

CD changer mechanism assembly and parts list

Exploded view and parts list for the CD changer mechanism assembly.

CD mechanism assembly and parts list

Exploded view and parts list for the CD mechanism assembly.

Cassette mechanism assembly and parts list

Exploded view and parts list for the cassette mechanism assembly.

Electrical parts list (Power board)

List of electrical components for the power board.

Electrical parts list (Input board)

List of electrical components for the input board.

Electrical parts list (Front board)

List of electrical components for the front board.

Electrical parts list (CD board)

List of electrical components for the CD board.

Electrical parts list (VCD board)

List of electrical components for the VCD board.

Electrical parts list (Tuner board)

List of electrical components for the tuner board.

Electrical parts list (CD switch board)

List of electrical components for the CD switch board.

Electrical parts list (Head amplifier & mechanism control board)

List of electrical components for the head amplifier and mechanism control board.

Packing materials and accessories parts list

Illustrations and list of packing materials and accessories for product packaging.

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