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Further Diagnostic Testing Required
1
Remove the Diagnostic/ 3 70 Personality Diskette
and return it to the front of this manual.
2
Set your system unit Power switch to
Off.
3
Set all external Power switches to
Off
(printer,
display, etc.).
4
Go to:
•
Diagnostics or problem determination
procedures for other options you may have
installed
•
"Section 2. Testing Your IBM Personal
Compurer AT" in the IBM Guide to
Operations-Personal Computer AT.
4-24 Problem Determination Procedures
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