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Akai Manuals
Tape Deck
4000DB
Service manual
Table Of Contents - Akai 4000DB Service Manual
Stereo
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Contents
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Table Of Contents
4
Specifications
5
D.c. Resistance Of Various Coils
7
Measuring Method
8
Tape Speed Deviation
8
Wow And Flutter
8
Frequency Response
8
Total Harmonic Distortion Factor
9
Cross Talk
9
Erase Ratio
9
Dismantling Of Unit
10
Mechanism Adjustment
11
Punch Wheel Pressure Measurement
11
Supply Reel Shaft Assembly Adjustment
11
Take-Up Reel Shaft Assembly Adjustment
11
Drive Belt Position Adjustment
13
Flywheel Loose Play Adjustment
13
Adjustment Of Idler Position At Fast Forward Mode
13
Automatic Shut-Off Operating Point Adjustment
15
Shifter Lever Position Adjustment
15
Head Adjustment
16
Head Height Adjustment
16
Head Azimuth Alignment Adjustment
16
Amplifier System Adjustment
17
Connection Of Various Instruments
17
Adjustment Semi-Fixed Resistor And Trimmer Condenser Position
17
Prior To Adjustment
18
Playback Level Adjustment
18
Monitor Level Adjustment
19
Recording Level Adjustment Using Low Noise Tape
19
Recording Level Adjustment Using Wide Range Tape
19
Frequency Response Adjustment
19
Dolby Nr Amp. Adjustment
20
Recording Dolby Nr Circuit Adjustment
21
Playback Dolby Nr Circuit Confirmation
21
Dolby Noise Reduction Circuit Operation
22
Recording Dolby Nr Circuit Operation
22
Playback Dolby Nr Circuit Operation
24
Composite Views Of Component S
25
Pre Amp. P.c. Board Le-5306
25
Dolby Nr P.c. Board Le-5307
26
Osc. & Power Supply P.c. Board Le-5021
27
Parts List
28
How To Use This Parts List
29
Electrical Parts Table
30
Illustration Of Head Block
31
Head Block
32
Reel Table Block
32
Illustration Of Reel Table Block
33
Illustration Of Motor Block
34
Illustration Of Flywheel/Belt Change Lever Block
35
Illustration Of Switch Block
36
Illustration Of Mech. Assembly Block
37
Photo Of Pre-Amp. P.c. Board Block
39
Photo Of Osc. Power Supply P.c. Board Block
40
Photo Of Dolby P.c. Board Block
41
Photo Of Amp. Assembly Block
43
Photo Of Final Assembly Block
46
Index
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