Akai GX-747 Manuals

Akai GX-747 Manuals

Manuals and User Guides for Akai GX-747. We have 1 Akai GX-747 manual available for free PDF download: Service Manual

Akai GX-747 Service Manual

Akai GX-747 Service Manual (63 pages)

Stereo

Brand: Akai | Category: Tape Deck | Size: 8.75 MB

Table of Contents

Table of Contents
3
Specifications
4
Dismantling of Unit
5
Controls
6
Principal Parts Location
7
Front View
7
Rear View
7
Voltage and Cycle Conversion
8
Description of Circuit Operation
9
Outline
9
Details and Features of EE Tape
9
S/N Ratio for Record/Playback
10
Explanation of each Operating Principles
11
System Control
12
IC1 Terminal Description
12
IC2 Terminal Description
12
Function Mode Selector Circuit
13
Tension Arm Locking System
15
Function Mode Indicator Circuit and Counter Circuit
16
Counter Indicator Circuit
16
Microcomputer Resetting Circuit
18
Timer Starting Circuit
18
Brake Control System of Reel Motor
20
Mechanism Adjustment
22
Guide Roller Loose Play Adjustment
22
Micro Switch Position Adjustment
22
Reel Table Height Adjustment
23
Capstan Shaft Loose Play Adjustment
23
Brake Band Position Adjustment and Brake Tension Adjustment
23
Pinch Roller Position Adjustment
24
Pause Plunger Position Adjustment
24
Pinch Roller Pressure Adjustment
24
Tape Speed Adjustment
25
Head Adjustment
26
Electrical Adjustment
28
Clock Frequency Adjustment
28
Photo Transistor Sensitivity
28
Rec Peaking Adjustment Instrument Connection
29
Rec Peaking Adjustment
29
Pre Amp P.C. Board
30
DC Resistance of Various Coils
32
Classification of Various P.C. Boards
33
P.C. Board Titles and Identification Numbers
33
Composition of Various P.C. Boards
34
MIC Amp P.C. Board
37
Bar Meter P.C. Board and Lamp P.C. Board
38
Operation P.C. Board
39
Counter P.C. Board
39
Fuse P.C. Board
40
Parts List
45
Recommended Spare Parts
47
Head Block
48
Motor Block
49
Reel Table Block
50
Power Block
52
Mecha Block
53
Sys. Con. P.C. Board Block
54
Pre Amp P.C. Board Block
55
MIC Amp. P.C. Board Block
55
Bar Meter P.C. Board Block
55
Assembly Block
56
Final Assembly Block
57
Schematic Diagram
60

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