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IBM 5150 Hardware Maintenance Manual
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5.
Install
two
screws
m
.
r".
6.
Install
screw
01
in
ground
strap.
7.
Replace
control
circuit
card
(See
page
3-48).
8.
Replace
driver
circuit
card
(Seepage
3-53).
9.
Replace
top
cover
(See
page
3-90).
1
O.
Replace
ribbon
cartridge.
11.
Replace
access
cover.
12.
Replace
forms
rack.
3-83
257
259
Table of Contents
Table of Contents
8
Section O. How-To-Use
10
Section 1. Introduction
14
Problem Isolation
16
Start
16
Power
16
System Board
39
Memory
44
Keyboard
50
Display (Monochrome)
54
Display (Color/Graphics)
72
Diskette Drive
122
Parallel Printer Adapter
126
Asynchronous Communications Adapter
130
Game Control Adapter
136
Removal/Replacement
176
1/4" DISKETTE DRIVE Cone Assembly Removal
178
Cone Assembly Replacement
179
Cone Lever Arm Removal
180
Cone Lever Arm Replacement
181
Diskette Drive"A" Removal
182
Diskette Drive"A" Replacement
184
Diskette Drive "B" Removal
186
Diskette Drive "B" Replacement
188
LED Assembly Replacement
197
Servo Board Removal
204
Servo Board Replacement
204
Access Cover Removal
207
Base Cover Removal
208
Base Cover Replacement
209
Carriage Belt Adjustment
210
Carriage Belt Removal
212
Carriage Belt Replacement
215
R ' \ Carriage Drive Assembly Removal
217
Carriage Drive Assembly Replacement
218
Control Circuit Card Removal
220
Control Circuit Card Replacement
223
Driver Circuit Card Removal
226
Driver Circuit Card Replacement
228
Control Panel Removal
229
Control Panel Replacement
229
Forms Feed Knob Removal
230
Forms Rack Removal
231
Forms Tractor Removal
232
Forms Tractor Replacement
233
Fuse Removal
234
Fuse-Filter Card/Power Cord Removal
235
Fuse-Filter Card/Power Cord Replacement
236
Heat Sink/Power Transistor Assembly Removal
237
Heat Sink/Power Transistor Assembly Replacement
238
Intermediate Gear Removal
239
Intermediate Gear Replacement
240
Left Margin Sensor Adjustment
241
Left Margin Sensor Removal
247
Left Margin Sensor Replacement
248
Power Transformer Removal
249
Power Transformer Replacement
250
Print Head Gap Adjustment
251
Print Head Removal
252
Print Head Replacement
254
Print Mechanism Assembly Removal
255
Print Mechanism Assembly Replacement
256
Ribbon Shield Removal
259
Ribbon Shield Replacement
260
Safety Shield Removal
262
Top Cover Removal
263
IBM MONOCHROME DISPLAY Display Removal
267
Display Replacement
267
KEYBOARD Base Removal
268
Base Replacement
268
Keyboard Assembly Removal
269
Keyboard Assembly Replacement
269
Option Adapter
270
Option Adapter Removal
270
Option Adapter Replacement
272
SYSTEM UNIT Cover Removal
273
Cover Replacement
273
Power Supply Removal
274
Power Supply Replacement
277
16 KB Memory Expansion Kit Removal
278
16 KB Memory Expansion Kit Replacement
280
Speaker Removal
281
System Board Removal
282
System Board Replacement
284
Preventive Maintenance (Pm)
330
Glossary
334
Other manuals for IBM 5150
Guide To Operations
252 pages
Hardware Reference Manual
393 pages
Technical Reference
309 pages
5
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IBM 5150 Specifications
General
Brand
IBM
Model
5150
Category
Desktop
Language
English
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