IBM 5150 Hardware Maintenance Manual

Heat Sink/Power Transistor Assembly Removal
1.
Position Printer Power switch to
OFF; unplug printer power
cord from wall outlet and disconnect Parallel Printer Cable.
2.
Remove forms.
3.
Remove forms rack
(Se<e page 3-56).
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4.
Remove access cover (See page 3-32).
5.
Remove top cover (See page 3-88).
6.
Remove power transfonner (See page 3-74).
7.
Remove fuse-filter card/power cord (See page 3-60).
8.
Remove driver circuit card (see page 3-51).
9.
Remove control circuit card (See page 3-45).
10.
Remove print mechanism assembly (See page 3-80).
11.
Lift heat sink assembly
II from base cover.
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IBM 5150 Specifications

General

Processor	Intel 8088
Clock Speed	4.77 MHz
RAM	16 KB - 256 KB
Manufacturer	IBM
Model	5150
Release Year	1981
Storage	5.25-inch floppy drives
Graphics	MDA or CGA
Operating System	IBM PC DOS
Ports	Cassette, keyboard
Expansion Slots	5