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Nakamichi Manuals
Cassette Player
ZX-7
Service manual
Table Of Contents - Nakamichi ZX-7 Service Manual
Discrete head cassette deck
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Also See for ZX-7
:
Owner's manual
(52 pages)
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Table Of Contents
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Contents
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Table of Contents
Contents
2
General Information
4
Control Functions
4
Removal Procedures
5
Top Cover Ass'y Removal
5
Bottom Cover Ass'y Removal
5
Cassette Case Cover Ass'y Removal
5
Front Panel Ass'y Removal
6
Mechanism Ass'y Removal
6
Logic & Power Pcb Ass'y Removal
7
Dolby Nr Pcb Ass'y Removal
7
Azimuth Switch Pcb Ass'y Removal
7
Power Switch Pcb Ass'y And Headphone Jack Ass'y Removal
7
Record Cal. Pcb Ass'y Removal
8
Sub Chassis Ass'y Removal
8
Main Pcb Ass'y Removal
8
Record Cal. Led Pcb Ass'y, Control Switch Pcb Ass'y, Indicator Pcb. Ass'y, Counter Pcb Ass'y And Counter Control Pcb. Ass'y Removal
8
Rear Panel Ass'y And Powe Transformer Removal
9
Cassette Case Plate Ass'y, Cassette Case Ass'y And Cover Plate Ass'y Removal
10
Capstan Motor Ass'y And Flywheel Ass'y Removal
10
Sub Mechanism Chassis Ass'y Removal
10
Control Motor Ass'y And Reel Motor Ass'y, Cam Control Volume, Reel Hub Ass'y And Idler Ass'y Removal
10
Cam Drive Gear And Control Cam Removal
11
Head Mount Base Ass'y Removal
12
Erase Head, Pressure Roller And Tape Guide Removal
12
Playback Head Ass'y And Record Head Ass'y Removal
12
Measurement Instruments
13
Mechanical Adjustments
13
Mechanism Control Cam Adjustment
13
Offset Adjustment Of Control Motor Driver
13
Reel Motor Speed Adjustment In Play Mode
14
Record Head And Playback Head Tilt Adjustment
14
Offset Fine Adjustment Of Control Motor Driver
14
Figures 4.4, 4.5, 4.6
15
Head Base Stroke Adjustment In Play Mode
16
Head Base Stroke Adjustment In Cue Mode
16
Erase Head Stroke Adjustment And Tape Guide Height Check
16
Erase Head Height And Tilt Adjustment
17
Take-Up Tape Guide Height Check
17
Back Tension Adjustment
18
Playback Head And Record Head Height Adjustment And Azimuth Alignment
18
Record Head Stroke Adjustment
20
Tape Travelling Adjustment
21
Flywheel Holder Adjustment
21
Tape Speed Adjustment
21
Parts Location For Electrical Adjustment
22
Electrical Adjustments And Measurements
23
Frequency Response Adjustment
27
Level Adjustment (For Middle Frequency Response)
27
Peaking Adjustment (For High Frequency Response)
27
For Sx Tape, For Exii Tape
27
Dolby Nr Circuit Check
28
Mounting Diagrams And Parts List
29
Control Switch Pcb Ass'y Mounting Diagram
30
Record Cat. Pcb Ass'y Mounting Diagram
30
Switch Pcb Ass'y Mounting Diagram
31
Dolby Nr Pcb Ass'y Mounting Diagram
32
Dolby Nr Pcb Ass'y Mounting Diagram (Uk, Australia, 220V Class 2, Others And Japan)
36
Logic & Power Pcb Ass'y Mounting Diagram
40
Main Pcb Ass'y Mounting Diagram
44
Mechanism Ass'y And Parts List
50
Synthesis Diagram
50
Front Panel Ass'y (A01) Diagram
51
Chassis Ass'y (A02) Diagram
54
Front Escutcheon A Ass'y (B01) Diagram
55
Control House Ass'y (B02) Diagram
56
Front Escutcheon B Ass'y (B03) Diagram
56
Headphone Holder Ass'y (C01) Diagram
56
Mechanism Ass'y Zx-7 (C02) Diagram
57
Rear Panel Ass'y (C03) Diagram
59
Flywheel Holder Ass'y (D01) Diagram
59
Sub Mechanism Chassis Ass'y (D02) Diagram
60
Main Mechanism Chassis Ass'y (D03) Diagram
61
Capstan Motor Ass'y (E01) Diagram
62
Control Motor Ass'y (F02) Diagram
62
Reel Motor Ass'y (F01) Diagram
62
Head Mount Base Ass'y (G01) Diagram
62
Supply Pressure Roller Ass'y (G02) Diagram
63
Take-Up Pressure Roller Ass'y (G03) Diagram
63
Head Base Ass'y (G04) Diagram
64
Cassette Case Holder L Ass'y (G05), Cassette Case Holder R Ass'y (G06) Diagrams
64
Auto Shut-Off Ass'y (G07) Diagram
64
Pneumatic Damper Ass'y (G08) Diagram
64
P-8L Playback Head Ass'y (H01) Diagram
65
R-8L Record Head Ass'y (H02) Diagram
65
Overall Timing Chart
66
Eq. Amp. Frequency Response
67
Playback Frequency Response Chart
67
Record Current Frequency Response Chart
67
Block Diagrams
68
Amplifier Section Block Diagram
68
Mechanism Control Section Block Diagram
69
Wiring Diagram
70
Attention To Servicemen
71
Ic Block Diagram
71
Exclusive Or Gate C-Mos Ic Μpd4030Bc Diagram
72
D-Type Flip-Flop C-Mos Ic Tc4013Bp Diagram
72
Level Meter Control Ic Msl9350Rs Diagram
72
4-Bit Micro-Processor Lm6402A-052/048 Diagram
73
Specifications
74
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