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Manuals
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Akai Manuals
Tape Deck
4000DB
Service manual
Akai 4000DB Service Manual
Stereo tape deck
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:
Service manual
(55 pages)
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Contents
Table of Contents
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Table of Contents
Table of Contents
Speci Cations
Specifications
D.C.resistance of Various Coils
Measuring Method
Tape Speed Deviation
Wow and Flutter
Frequency Response
Signal to Noise Ratio
Total Harmonic Distortion Factor
CROSS TALK (Cross Talk between the Tracks)
Erase Ratio
Dismantling of Unit
Mechanism Adjustment
Pinch Wheel Pressure Measurement.10
Supply Reel Shaft Assembly Adjustment.10
Take-Up Reel Shaft Assembly Adjustment.10
Drive Belt Position Adjustment
Flywheel Loose Play Adjustment.12
Adjustment of Idler #2 Position at Fast Forward Mode.12
Automatic Shut-Off Operating Point Adjustment.14
Shifter Lever Position Adjustment.14
Head Adjustment.15
Head Height Adjustment.15
Head Azimuth Alignment Adjustment.15
Amplifier System Adjustment.16
Connection of Various Instruments.16
Adjustment Semi-Fixed Resistor and Trimmer Condenser Position
Prior to Adjustment
Low Noise
Playback Level Adjustment.17
Monitor Level Adjustment.18
Recording Level Adjustment Using Low Noise Tape.18
Recording Level Adjustment Using Wide Range Tape.18
Recording Bias Frequency Check.18
Dolby Nr Amp. Adjustment.19
Dolby Noise Reduction Circuit Operation.21
How to Use this Parts List
Motor Block
Switch Block
Amp. Assembly Block
Final Assembly Block
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