Mini Power-On Self Test - IBM Personal Computer Manual To Operations

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Mini Power-On Self Test
Set the system unit's Power switch to On. You should
hear one short beep after the memory is checked. This
will take between 13 and 90 seconds, depending on the
amount of memory installed.
If
you have a diskette drive installed, it is normal to
hear motor noise and see the In-Use light on for a short
time.
Setup
2-7

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