IBM 5150 Manual To Operations page 189

SECTION 4. PROBLEM DETERMINATION
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PROCEDURES
Contents
Introduction
· 4-3
What is Problem Determination?
· 4-3
Power On Diagnostics
· 4-4
Error Examples · 4-7
Service Information
· 4-10
Printer Problem Determination Procedures
· 4-11
Printer Problem Chart
· 4-12
Using Diagnostic Aids
· 4-13
Loading Diskette
· 4-17
Loading Cassette
· 4-18
Running Test .
· 4-20
Summary
· 4-45
PDPs 4-1