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Oki Manuals
Printer
Microline 520
Service handbook
Table Of Contents - Oki Microline 520 Service Handbook
Oki microline 520/521 service handbook
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Also See for Microline 520
:
Service handbook
(321 pages)
,
User manual
(68 pages)
,
Guía del usuario
(64 pages)
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Table Of Contents
193
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Contents
Table of Contents
Troubleshooting
Bookmarks
Table of Contents
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Table Of Contents
Physical Specifications
3
Power Requirements
4
Environmental Conditions
5
Operational Specifications
6
Paper Specifications
10
Memory Specifications
12
Options - Cut Sheet Feeders
14
Pull Tractor Kit
15
Bottom Push Tractor Kit
16
Serial Interface
17
Roll Paper Stand
18
Chapter 2 2.1 Electrical Operation
20
Main Control Board
21
Block Diagram
22
Program Rom
23
Electrically Erasable Programmable Read Only Memory
26
Parallel Interface Control
28
Print Control
29
Lsi/Printhead Interface
30
Gap Adjust Control
31
Print Compensation Control
32
Space And Line Feed (Sp/Lf) Motor Control
33
Line Feed Motor Control
34
Space Motor Control
35
Encoder Disk
36
Operation Panel
37
Alarm Circuit
38
Low Motor Drive Voltage Alarm
39
Head Drive Time
40
Print Speed
41
Head Overheat Alarm Processing
42
Power Supply Circuit
43
Mechanical Operation - Printhead Mechanism
44
Printhead Gap Information
45
Printhead Operation
47
Printhead Temperature
49
Spacing Mechanism
50
Spacing Operation
51
Head Gap Mechanism
52
Ribbon Drive Operation
54
Line Feed Mechanism
55
Cut Sheet/Continuous Sheet Switching Mechanism
56
Cut Sheet Paper Feed Operation
57
Continuous Paper Feed (Rear Tractor Mechanism)
58
Continuous Paper Feed (Pull Tractor Mechanism)
59
Continuous Paper Feed (Push/Pull Tractor Mechanism)
61
Paper Detection Mechanism
62
Support Protector Mechanism
63
Automatic Paper Load
64
Continuous Feed Paper
65
Paper Park
66
Chapter 3 %3.1.01 General Information
67
Maintenance Tools
68
Maintenance Precautions
69
Disassembly/Assembly Procedures
70
Preliminary Items
71
Printhead Assembly
72
Ribbon Protector
73
Gear Case Assembly
74
Pull-Up Roller Assembly
75
Upper Cover, Access Cover, And Sheet Guide Assemblies
76
Power Supply Assembly
79
Operator Panel Pcb (Leop)
80
Space Motor And Roller Guide Assemblies
82
Carriage Cable
84
Space Rack
85
Roller/Holder Backup Assembly
86
Guide Rail And Adjust Cam
87
Left Ground Plate
88
Right Ground Plate
89
Rear And Cut Sheet Paper Feed Sensor Levers
90
Platen Assembly
91
Paper Chute Assembly
92
Line Feed Motor Assembly
93
Reset Spring
94
Idle Gear And Change Lever
95
Pressure Spring
96
Carriage Shaft
97
Leaf Spring
98
Bottom Paper Sensor Levers
99
Front Pressure Roller Assembly
100
Tractor Assembly
101
Main Frame
103
Printer Adjustments
104
Printhead Gap Adjustment
105
Key Combinations
107
Menu Operation
108
Menu Settings
110
Top Of Form
113
Tear Feature
115
Forms Tear Off
116
Troubleshooting Tips
122
Problem Categories
123
Start Here Flowchart
124
Tips For Preventing Image Problems
125
Common Problems
126
Abnormal Output - Output Samples
128
Left Margin Drifting Problem
130
Fault Alarms
131
Alarm/Led Display Troubleshooting Table Index
132
Alarm/Led Display Troubleshooting Tables
134
Repair Analysis Procedures (Raps)
136
Rap Index
137
Rap 01 No Power Supplied To Printer
138
Rap 02 No Spacing Operation
139
Rap 03 Printhead Homing Error
140
Rap 04 Paper Jam During Paper Loading
141
Rap 05 Printhead Pins Not Firing
142
Rap 06 Poor Print Quality
143
Rap 07 Ribbon Feed Problem
144
Rap 08 Line Feed Problem
145
Rap 09 Operation Panel Malfunction
146
Rap 10 Parallel Interface Problem
147
Rap 11 Serial Interface Problem
148
Printer Tests
149
Rolling Ascii Test
150
Font Test
151
Serial Interface Loopback Test
152
Serial Cable Information
153
Serial Interface Signal Requirements
154
Commonly Used Serial Cable Configurations
155
Hexadecimal Dump Mode
156
Resistance Checks
157
Layout Diagram
158
Line Feed Motor Resistance
160
Space Motor Resistance
161
Index To Charts
163
Board Layout
164
Operator Panel Board (Leop)
166
Space Motor Board
168
Current Part Numbers
172
Definition Of Terms
173
Parts Ordering Information
174
Upper Cover Assembly
178
Printer General Assembly
179
Printer Unit
181
Carriage Assembly
187
Option Parts
191
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Table of Contents
Troubleshooting
Troubleshooting Tips
122
ALARM/LED Display Troubleshooting Table Index
132
ALARM/LED Display Troubleshooting Tables
134
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