IBM 5150 Hardware Maintenance Manual

You have gone through the PICs without resolving your
problem. The following steps should help you to find
additional audio or visual symptoms.
l. Check the entire system for loose or damaged connectors.
2. Review PIC 010, "Start."
3. Select "Utilities" in the diagnostic menu, start an error
log, and select
"Run tests multiple times." This will allow
you to exercise the machine thoroughly and identify the
failing symptom. When you have identified the symptom,
go to
PIC 0 I 0 "Start" or the appropriate PIC for that
symptom.
If you have followed these procedures and still have an
unresolved problem,
you should seek technical assistance.
100-2

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