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Akai GX-95 Service Manual

Akai GX-95
36 pages
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Akai GX-95 Specifications

General IconGeneral
Track System4-track, 2-channel stereo
Tape Speed4.76 cm/s
Frequency Response20Hz to 21kHz (Metal tape)
Output0.41V (line)
Tape Typetype I, CrO2, Metal
Heads1 x record, 1 x playback, 1 x erase
Motor2 x reel
Total Harmonic Distortion0.8%
Signal to Noise Ratio75dB (Dolby C)

Summary

Cassette Deck Specifications

Safety and Precautions

Servicing Safety Precautions

Essential safety measures and precautions to follow during the servicing of the cassette deck.

Post-Servicing Safety Checks

Procedures for verifying safety standards, including leakage current and resistance tests after servicing.

Front Panel Controls

Control Functions and Operation

Detailed explanation of the purpose and operation of each button, switch, and display on the front panel.

Disassembly Procedures

Removing External Covers

Step-by-step instructions for removing the upper, front, and bottom covers of the unit.

Internal Component Layout

Mechanism Disassembly

Lid Case and Decoration Removal

Instructions for carefully removing the cassette lid case and decorative trim parts.

Mechanism Block Removal

Detaching the Mechanism Block

Procedure for disconnecting and removing the main cassette mechanism block from the chassis.

Motor Block Removal

Detaching the Motor Block

Steps to remove the motor block from the mechanism assembly.

Cam Motor and Belt Replacement

Removing Cam Motor and Cam Belt

Detailed steps for removing the cam motor and its associated belt.

Hall Element Replacement

Cam Wheel and Potentiometer Handling

Removing Cam Wheel and Position Potentiometer

Procedure for removing the cam wheel and position potentiometer.

Mechanical Adjustments

Potentiometer Preset Voltage Adjustment

Guide for adjusting preset voltage levels using VR1 and VR2 on the motor PCB.

Mechanical Measurements

Pinch Roller Pressure Measurement

Method for measuring the pressure of the pinch rollers using a spring gauge.

Winding Torque Measurement

Procedure for measuring the winding torque in play, fast forward, and rewind modes.

Head Adjustment Procedures

REC/PB Head Projection Adjustment

Adjusting the projection height of the record/playback head using a gauge.

Tape Guide Height Adjustment

Setting the correct height for tape guides to ensure smooth tape travel.

REC/PB Head Height Adjustment

Adjusting the vertical alignment of the record/playback head for optimal output.

REC/PB Head Azimuth Alignment

Aligning the azimuth of the record/playback head for accurate stereo reproduction.

Recommended Spare Parts

Mecha Block Assembly Diagram

Final Assembly Diagram

Schematic Diagrams - Motor PCB

Schematic Diagrams - Power Supply PCB

Schematic Diagrams - Operation PCB

Schematic Diagrams - Pre-Amp PCB

Schematic Diagrams - Syscon PCB

System Block Diagram

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