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JVC MX-J750R User Manual

JVC MX-J750R
132 pages
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Table of Contents

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JVC MX-J750R Specifications

General IconGeneral
BrandJVC
ModelMX-J750R
CategoryCD Player
LanguageEnglish

Summary

Safety Precautions

General Safety Guidelines

General safety instructions for handling the equipment and avoiding hazards.

Leakage Current Check Procedure

Procedure for checking leakage current to prevent electrical shock hazards during servicing.

Laser Product Safety

Laser Product Safety Warnings

Important safety information and warnings related to Class 1 laser products.

Static Electricity Prevention

Grounding Procedures

Guidelines for grounding the workbench and yourself to prevent static discharge damage.

Handling Optical and Traverse Units

Precautions for handling the optical pickup and traverse unit during servicing.

Disassembly Precautions

Disassembly Precautions

Precautions to take when disassembling the unit and replacing parts, focusing on electrical safety.

System Instructions

Instructions for SP-MXJ750R

Specific instructions related to the SP-MXJ750R model.

Introduction

About This Manual

Information about the purpose and content of the service manual.

Installation Precautions

Precautions to be observed during the installation process.

Controls and Indicators

Front Panel and Display Controls

Identification and description of controls on the front panel and the display window.

Remote Control Layout

Diagram and explanation of the remote control buttons and functions.

Getting Started Section

Introduction to the initial setup and basic operations of the unit.

Getting Started

Connecting Peripherals

Instructions for connecting speakers, antenna, and other external equipment.

Powering On the Unit

Steps for turning the unit on for the first time.

Basic Operation

Clock and Volume Adjustment

Procedures for setting the clock display and adjusting the audio volume.

Tone Controls

Explanation of how to adjust bass and treble settings for sound output.

Tuning and Reception

Station Listening and Tuning

Instructions on how to listen to and tune FM/AM radio stations.

Preset Station Operation

How to test and operate preset radio station functions.

RDS Features

RDS Information and Operation

Details on RDS features, including searching programs and changing information display.

CD Playback

CD Loading and Playback

Instructions for loading CDs and basic playback operations.

Continuous CD Playback

How to play back multiple discs continuously.

CD Playback Programming

Programming CD Playback Order

Steps to program a custom playback order for CDs.

Tape Operation

Playing Back Tapes

Instructions for playing audio from cassette tapes.

Tape Recording

Recording Tapes

Procedures for recording audio onto cassette tapes.

Tape Dubbing

Recording from CD to Tape

Steps for dubbing audio content from a CD to a cassette tape.

Dubbing Tapes

Instructions for copying audio between cassette tapes.

Auto Recording Modes

Auto Rec Recording

Explanation of the auto recording feature for cassettes.

Recording Modes

Details on recording modes like reverse and normal for cassette tapes.

Timer Functions

Using the Timers

General instructions for operating the unit's timer functions.

Auto Recording Setup

Steps for setting up automatic recording timers.

Timer Settings

Setting the Timer

Procedures for setting the desired timer activation times.

Daily Timer Operation

Specific instructions for using the daily timer function.

How Timer Actually Works

Detailed explanation of the timer's operational logic and sequence.

Timer Priority and Usage

Timer Priority

Explanation of how timer priorities are handled when multiple timers are set.

Maintenance

Disc Drive Maintenance

Procedures for maintaining the CD drive mechanism.

Cassette Tape Handling

Guidelines for handling and maintaining cassette tapes and mechanisms.

Troubleshooting

Troubleshooting Common Issues

Common problems and their solutions, including no sound or disc playback issues.

Troubleshooting

Troubleshooting Common Issues

Further common problems and solutions, such as speaker output and disc play issues.

Additional Information

FM Station PTY Code Explanations

Explanation of Program Type (PTY) codes used for FM radio stations.

Specifications

Amplifier Section Specifications

Technical specifications for the amplifier section of the unit.

CD Player Specifications

Technical specifications related to the CD playback functionality.

Cassette Deck Specifications

Technical specifications for the cassette deck mechanism.

System Instructions

Safety Instructions

Essential safety instructions for operating and maintaining the system.

System Connections Overview

General overview of how to connect various components to the system.

System Connections

Connecting Speakers and Antenna

Instructions for connecting external speakers and the AM antenna.

Connecting Other Equipment

Guidance on connecting external audio devices and accessories.

General System Operation

System Power On/Off

Procedure for turning the system's power on and off.

System Operation Details

Clock and Volume Adjustment

Steps for setting the system clock and adjusting the audio volume.

Tone Controls

How to adjust the bass and treble for customized sound output.

System Tuning

Station Listening and Tuning

Instructions for tuning and listening to FM/AM radio stations.

Tone Controls

Detailed explanation of the tone control functions.

Station Reception

Preset Station Operation

How to set up and use preset radio stations.

RDS Reception

Information and steps for receiving Radio Data System (RDS) broadcasts.

RDS Features

RDS Information and Operation

Details on RDS program type, station name, and text information.

CD Playback

CD Loading and Playback

Instructions for loading CDs and initiating playback.

Continuous CD Playback

How to play multiple discs continuously without interruption.

CD Playback Programming

Programming CD Playback Order

Steps for programming a custom playback sequence for CDs.

Tape Playback and Recording

Playing Back Tapes

Instructions for playing cassette tapes.

Recording Tapes

Procedures for recording audio onto cassette tapes.

Tape Operation

Recording Tapes

Continuation of tape recording instructions.

Adjustment Method Overview

Introduction to the adjustment procedures for the tape mechanism.

Adjustment Procedures

Measurement Requirements

List of measurement tools and requirements for adjusting the unit.

Measurement Conditions

Specific conditions and settings required for performing measurements.

Radio Input Signal Parameters

Parameters for the radio input signal used during adjustments.

Measurement Details

Frequency Counter and Wow Flutter

Information on using frequency counters and wow flutter meters for measurements.

Test Tape Procedures

Procedures and specifications for using test tapes.

Recording Bias and Frequency Characteristics

Recording Bias Current

Method for adjusting the recording bias current.

Recording/Playback Frequency Characteristics

Procedure for adjusting recording and playback frequency characteristics.

Diagnostic Methods

Extension Wire Diagnosis

Procedure for diagnosing system issues using an extension wire method.

System Control Board Diagnosis

Steps for diagnosing problems related to the system control P.C. board.

Functional Operation Flow

TOC Read Process

Flowchart detailing the operational steps until TOC (Table of Contents) is read.

Laser Pickup Maintenance

Laser Pickup Cleaning and Lifespan

Instructions for cleaning the laser pickup lens and information on laser diode lifespan.

Laser Pickup Replacement

Procedure for replacing the laser pickup unit.

Integrated Circuit Descriptions

IC AN8806SB-W Description

Description of the AN8806SB-W IC, including pin layout and block diagram.

IC Descriptions

IC BA6897FP-W Description

Description of the BA6897FP-W IC (4-channel driver), including pin layout and block diagram.

IC Descriptions

IC BA3837 Description

Description of the BA3837 IC (MIC Mixer), including block diagram and pin function.

IC Descriptions

IC BA15218 Description

Description of the BA15218 IC (OP AMP), including block diagram.

IC BU4094BCF-X Description

Description of the BU4094BCF-X IC (Serial to parallel port extension).

IC Descriptions

IC GP1U281X Description

Description of the GP1U281X IC (Receiver for remote controller), including block diagram.

IC Descriptions

IC LA1838 Description

Description of the LA1838 IC (FM AM IF AMP & detector), including block diagram and pin function.

IC Descriptions

IC LC72136N Description

Description of the LC72136N IC (PLL Frequency synthesizer), including pin layout and block diagram.

IC Descriptions

IC TDA7439 Description

Description of the TDA7439 IC (Control volume), including pin layout and block diagram.

IC Descriptions

IC MN101CP35DEA Description

Description of the MN101CP35DEA IC (System controller), including pin function (1/2).

IC Descriptions

IC MN101CP35DEA Description

Description of the MN101CP35DEA IC (System controller), including pin function (2/2).

IC Descriptions

IC MN35510 Description

Description of the MN35510 IC (Digital Servo/Signal Processor), including terminal layout and block diagram.

IC Descriptions

IC MN35510 Pin Function

Detailed pin function list for the MN35510 IC.

IC Descriptions

IC UPD780055GC011 Description

Description of the UPD780055GC011 IC (CD Changer Control), including terminal layout and pin function.

IC Descriptions

IC BU9253AS Description

Description of the BU9253AS IC (LP&ECHO MIX), including pin layout, block diagram, and pin function.

IC Descriptions

IC LB1641 Description

Description of the LB1641 IC (DC Motor Driver), including pin layout and functions.

IC TA8409S Description

Description of the TA8409S IC (Motor Driver), including pin layout and function.

IC Descriptions

IC TA8409S Description

Continuation of TA8409S IC (Motor Driver) description.

IC NJM4580L Description

Description of the NJM4580L IC (Mic Amplifier).

IC Descriptions

IC BA3835S Description

Description of the BA3835S IC (SPI B.P.F.), including block diagrams and pin function.

IC Descriptions

IC BU4094BC Description

Description of the BU4094BC IC (Serial to parallel port extension), including pin layout and block diagram.

IC Descriptions

IC LA72723 Description

Description of the LA72723 IC (RDS demodulation), including pin layout and block diagram.

Block Diagrams

Main/Cassette/CD Section Block Diagram

Block diagram illustrating the main, cassette, and CD sections of the system.

Tuner Section Block Diagram

Schematic Diagrams

Power Transformer Schematic

Schematic diagram for the power transformer section of the unit.

Schema Explanation

Model Number Key

Key explaining model number designations used in the schema.

Sheet Number Key

Key indicating the sheet numbering system for schematics.

Version Code Key

Key explaining the version codes used for different regional models.

Circuit Section: Power Amplifier & Regulator

Circuit Section: Function & Main Amplifier

Circuit Section: FL Display & System Controller

Circuit Section: Microphone Amplifier

Circuit Section: CD Servo & Mechanism Control

Circuit Section: Head Amplifier & Mechanism Control

Circuit Section: Cassette Mecha Control

Tuner Section (J, C, U, S, UX, UY)

Tuner Section (B, E, EN, U,V)

Printed Circuit Boards

Main & Preamplifier Board Layout

Layout diagram of the main and preamplifier printed circuit board.

Printed Circuit Boards

Input/Output & Power Board Layout

Layout diagram of the input/output and power board.

Printed Circuit Boards

CD Tray Section Switch Board

Layout diagram for the CD tray section switch board.

Cam Switch Board Layout

Layout diagram for the cam switch board.

Printed Circuit Boards

CD Servo Board Layout

Layout diagram of the CD servo control board.

Printed Circuit Boards

Cassette Mechanism Board Layout

Layout diagram of the cassette mechanism control board.

Printed Circuit Boards

Tuner Board Layout

Layout diagram of the tuner board.

Parts List

Parts List Contents

Table of contents for the parts list section.

Parts List: General Assembly

Exploded View of General Assembly

Exploded view illustration of the general assembly with numbered parts.

Parts List: General Assembly

General Parts List

List of general assembly parts with part numbers and descriptions.

Parts List: CD Changer Mechanism

CD Changer Mechanism Assembly Parts

List of parts for the CD changer mechanism assembly.

Parts List: CD Changer Mechanism

CD Changer Parts List

Detailed parts list specific to the CD changer mechanism.

Parts List: CD Mechanism

CD Mechanism Assembly Parts

List of parts comprising the CD mechanism assembly.

Parts List: Cassette Mechanism

Cassette Mechanism Assembly Parts

List of parts for the cassette mechanism assembly.

Grease Points

Grease Point Locations

Diagrams indicating specific points where grease should be applied.

Electrical Parts List: Power AMP & Source Select Board

Electrical Parts List: System Control Board

Electrical Parts List: Tuner Board (Ver. J/C,U)

Electrical Parts List: Tuner Board (Ver. U/US/UX/UY)

Electrical Parts List: Tuner Board (Ver. B/E/EN/UV)

Electrical Parts List: CD Servo Board

Electrical Parts List: CD Select Switch Board

Electrical Parts List: Head Amplifier & Mechanism Control Board

Packing and Accessories List

Packing Parts List (MX-J700)

List of packing materials for the MX-J700 model.

Accessories Parts List (MX-J700)

List of accessories included with the MX-J700 model.

Packing and Accessories List

Packing Parts List (CA/SP Models)

List of packing materials for CA-MXJ700 and SP-MXJ750R models.

Accessories Parts List (CA/SP Models)

List of accessories for CA-MXJ700 and SP-MXJ750R models.

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