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Akai GXC-750 Service Manual

Akai GXC-750
60 pages
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Akai GXC-750 Specifications

General IconGeneral
Track System4-track, 2-channel stereo
Tape Speed4.76 cm/s
TypeCassette Deck
Heads1 x erase
Tape TypeNormal, CrO2, Metal
Signal-to-Noise Ratio58dB (Dolby B off)
InputLine (RCA)
OutputLine (RCA)
Power SupplyAC 120/220/240V, 50/60Hz

Summary

SECTION 1. SPECIFICATIONS AND SERVICE PROCEDURES

III. MEASURING METHOD

Details procedures for testing tape speed, wow & flutter, frequency response, and S/N ratio.

1. TAPE SPEED DEVIATION

Explains how to measure tape speed deviation using a frequency counter.

V. MECHANISM ADJUSTMENT

Covers various mechanical adjustments for the tape deck mechanism.

1. SWITCH & SLIDE ADJUSTMENTS

Details adjusting micro switches, play slide, and recording switches.

VI. HEAD ADJUSTMENT

Instructions for adjusting the recording/playback and erase heads.

1. Head Height Adjustment

Details adjusting head height for maximum output on both channels.

2. Head Azimuth Alignment Adjustment

Explains how to align head azimuth for optimal playback.

VII. AMPLIFIER SYSTEM ADJUSTMENT

Covers adjustments for the tape deck's audio amplifier circuits.

2. LEVEL & RESPONSE ADJUSTMENTS

Describes adjusting playback, recording levels, and frequency response.

4. DOLBY N.R. SYSTEM CIRCUIT ADJUSTMENT

Covers adjustments for the Dolby Noise Reduction system circuits.

IX. SYSTEM CONTROL CIRCUIT OPERATION

Explains the operation of the system control circuits.

X. DOLBY N.R. CIRCUIT OPERATION

Explains the operation of the Dolby Noise Reduction circuits.

1. RECORDING DOLBY N.R. SYSTEM

Details the recording process within the Dolby N.R. system.

2. PLAYBACK DOLBY N.R. SYSTEM

Explains the playback process within the Dolby N.R. system.

XI. A.D.R. SYSTEM AND O.L.S. CIRCUIT OPERATION

Explains the Automatic Distortion Reduction and Over Level Suppressor circuits.

1. A.D.R. SYSTEM PRINCIPLES

Describes the operating principles of the ADR system.

2. O.L.S. CIRCUIT OPERATION

Explains the operation of the Over Level Suppressor circuit.

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