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NX-1000 series
Star Micronics NX-1000 series User Manual
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– 88 –
5-1-3. Circuit Diagram (Ver.1)
90
92
Table of Contents
Chapter 1 1 2
4
Table of Contents
4
General Specifications
6
Parallel Type
6
Commodore Type
7
External Appearance and Composition
10
Names of Parts
10
DIP Switch Settings
12
Connector Signals
14
Parallel Interface
14
Commodore Interface
15
Chapter 2 1 2
16
Block Diagram
18
Main Logic Board
19
Data Input Operation
19
Parallel Interface
19
Commodore Interface
20
General Flow Chart
22
Editing
23
Print Head Driving Circuit
23
Carriage Motor Driving Circuit
23
Carriage Motor Speed Control
24
Paper Feed Motor Driving Circuit
25
Reset Circuit
26
Reset by +5V Line Voltage Detection
27
Protection Circuit
27
Power Supply Unit
27
Mechanisms
28
Print Head Mechanism
28
Print Head Carrying Mechanism
28
Ink Ribbon Feed Mechanism
29
Paper Feed Mechanism
30
Detectors
31
Table of Contents
32
Adjusting Gap between Print Head and Platen
34
CHAPTER 3 Gap Adjustment between Print Head and Platen
34
Measuring Gap between Print Head and Platen
34
Adjustment of Timing Belt Tension
35
Adjustment of Home Position (Colour Type Only)
36
Measuring Gap between Home Position Detector and Frame
36
Adjusting Gap between Home Position Detector and Frame
36
Adjustment of Colour Ribbon Holder (Colour Type Only)
37
Table of Contents
38
Chapter 4
40
Parts Replacement
40
Printer Mechanism
40
Upper Case Unit
40
Main Logic Board
41
Power Supply Unit
42
Fuses
43
Print Head
44
Carriage Motor Unit
45
Platen Unit
46
Tractor Unit
46
Detector Unit
47
Maintenance and Lubrication
50
Lubricated Areas
51
Chapter 6 1 2
54
Troubleshooting Procedures
56
Unit Replacement Flow Chart
57
Repair by Unit Replacement
58
Repair by Replacement of Parts
64
Does Not Operate at ALL with Power on
64
Power Supply Unit Abnormal
65
Defective Motor Operation
66
Defective Print Head Operation
67
Defective Interface Operation
68
Chapter 7 1 2
70
Pringer Assembly
71
Disassembly Drawing
71
Parts List
72
Printer Mechanism
74
Disassembly Drawing
74
Parts List
75
Sub-Assembly
76
Upper Case Unit
76
Lower Case Unit
77
Frame Unit
78
Monochrome Type
78
Colour Type
79
Tractor Unit
81
Platen Unit
82
Wiring Scheme of Printer
83
Parallel Type
83
Commodore Type
84
Parallel Type (Ver.1)
85
Component Layout
85
Parts List
87
Circuit Diagram
91
Parallel Type (Ver.1.5)
95
Component Layout
95
Parts List
97
Circuit Diagram
101
Commodore Type
105
Component Layout
105
Parts List
107
Circuit Diagram
109
Power Supply Unit
113
Circuit Diagram
113
Component Layout
113
Parts List
114
Waveform with Oscilloscope
115
Chapter 8 1 2 How to Use Parts List
118
Pringer Assembly
119
Disassembly Drawing
119
Parts List
120
Printer Mechanism
122
Disassembly Drawing
122
Parts List
123
Sub-Assembly
124
Upper Case Unit
124
Lower Case Unit
125
Frame Unit
126
Tractor Unit
127
Platen Unit
128
Wiring Scheme of Printer
129
Main Logic Board
130
Comonent Layout
130
Parts List
131
Circuit Digram
135
Power Supply Unit
139
Circuit Diagram
139
Component Layout
139
Parts List
140
Waveform with Oscilloscope
141
Appendix
146
Cpu M50734Sp
146
Gate Array D65006CW-LC
146
Ram Hm6264
146
Rom Mpd27C512Ds
146
Gate Array D65006CW-LC2
147
Ram Hm65256
147
Transistor Array STA401
147
Voltage Detecting IC M51953BL
147
Transistor 2SD1637
148
Transistor 2SD2010
148
4
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Star Micronics NX-1000 series Specifications
General
Brand
Star Micronics
Model
NX-1000 series
Category
Printer
Language
English
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