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Chapter
2.
Diagnostic Aids
Three diagnostic aids are used to check the IBM
Token-Ring Network PC Adapter:
•
Power-On Self Test (POST)
•
Advanced Diagnostics
•
Problem Isolation Charts (PICs).
The Power-On Self Test and Advanced Diagnostics are
described in this chapter. The Problem Isolation Charts
are located in Chapter 3.
After you become familiar with the diagnostics, it will not
be necessary to go through this chapter. However, this
material is useful until you have a better understanding of
these diagnostic aids.
Power-On Self Test
The Power-On Self Test (POST) is a diagnostic routine in
read-only memory (ROM) on the system board. POST
runs automatically when you turn on the power switch for
your computer. POST takes less than two minutes to
complete. This routine checks all of the following items
that are included in or attached to your computer:
•
System board
•
Memory expansion adapters
•
Fixed disk and diskette drive adapter
•
Primary display
•
Keyboard
•
Diskette drives
•
Fixed disk drives.
2-1
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