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Akai GX-69 Service Manual

Akai GX-69
46 pages
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Akai GX-69 Specifications

General IconGeneral
BrandAkai
ModelGX-69
CategoryCassette Player
LanguageEnglish

Summary

Specifications

Track System & Heads

Describes tape format and head configuration.

Performance Metrics

Covers frequency response, distortion, wow/flutter.

Electrical & Power Specs

Input/output levels, power requirements.

Physical Dimensions & Weight

Size and mass of the unit.

Parts List

Ordering Parts Attention

Important notes for ordering replacement parts.

Using the Parts List

Guidance on reading and utilizing the parts list.

Mechanism & PC Board Parts

Lists components for mechanical and electronic sections.

Part Classification Symbols

Explains destination and component symbol references.

Safety Critical Component Warning

Identifies and cautions about safety-critical parts.

Recommended Spare Parts List

Mecha Block Assembly Diagram

Mecha Block Parts List

PC Board Parts List

Pre-Amp & System Control Boards

Lists components for pre-amp and syscon circuit boards.

Other Circuit Board Components

Lists components for headphone, power, timer, and eject boards.

Pre-Amplifier PC Board Components

PC Board Parts Lists

Headphone, Power Switch, & System Control Boards

Components for headphone, power, and system control circuits.

Timer & Eject Switch Boards

Components for timer and eject switch circuits.

Final Assembly Block Diagram

Final Assembly Parts List

Accessories List

Safety Instructions

Precautions During Servicing

General safety guidelines for performing maintenance.

Safety Check After Servicing

Procedures for ensuring safety post-repair.

Environmental Protection

Guidance on proper battery disposal.

Voltage Conversion

Instructions for adjusting the voltage selector.

Disassembly Procedures

Upper Cover Removal

Steps to remove the top casing.

Cassette Lid Removal

Steps to remove the cassette compartment lid.

Front Panel Removal

Steps to detach the front panel assembly.

Component Replacement Procedures

Dismantling Overview

General procedure for component replacement.

Mecha Block Removal

Detailed steps for removing the mecha block.

Mechanical Component Removal

Cassette Case Removal

Steps to remove the cassette case.

Mecha Block Separation

Steps to separate the mecha block components.

Component Replacement Procedures

Capstan Motor & Drive Belt Replacement

Procedure to replace capstan motor and belt.

Reel Motor Replacement

Procedure to replace the reel motor.

Mechanical Component Replacement

Loading Motor Replacement (GX-67)

Procedure to replace the loading motor.

Rec/PB Head Replacement

Procedure to replace the record/playback head.

Pinch Roller Block Replacement

Procedure for replacing pinch roller blocks.

Mechanical Adjustment Procedures

Pinch Roller Pressure Confirmation

Verifying pinch roller pressure.

Winding Torque Confirmation

Checking winding torque in different modes.

Tape Speed Adjustment

Adjusting the tape playback speed.

Jammed Tape Removal

Procedure for removing jammed tapes.

Head Adjustment Procedures

Tape Guide Height Adjustment

Adjusting tape guide height for proper tape path.

Rec/PB Head Azimuth Alignment

Aligning the record/playback head azimuth.

Rec/PB Head Replacement Adjustments

Procedures for head replacement adjustments.

Electrical Adjustment Procedures

Adjustment Overview

Notes, key, and general setup for adjustments.

Bias and Recording Settings

Setting bias for different tapes and recording levels.

Playback and Equalization Settings

Setting playback and equalizer output levels.

Frequency, Filter, Meter, and Calibration

Adjusting frequency, MPX filter, meters, and calibration.

Parts List Overview

Parts Ordering & Usage Guidance

Notes on ordering, using the list, and symbols.

Recommended Spare Parts

List of suggested spare parts for routine service.

Component Identification

Lists mechanism, PC board, and safety-critical parts.

Mecha Block Parts Identification

PC Board Parts Identification

Pre-Amp & System Control Boards

Lists components for pre-amp and syscon circuit boards.

Other Circuit Board Components

Lists components for headphone, power, timer, and eject boards.

PC Board Parts Lists

Headphone, Power Switch, & System Control Boards

Components for headphone, power, and system control circuits.

Timer & Eject Switch Boards

Components for timer and eject switch circuits.

Final Assembly Parts

Accessories List

DX-57 Block Diagram

GX-67 Block Diagram

Connection Diagram

GX-67 Pre-Amplifier Schematic

System Control Schematic Diagram

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