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3.0 Power-On Self-Test (POST)
The POST is initiated each time you power-on the system and takes up to 90
seconds to complete, depending on the options installed.
The POST checks the following:
System Board
Memory
Video Interface
Keyboard
Diskette Drive
Fixed Disk Drive
Serial and Parallel Ports.
To start the POST, power-on the system.
1.
While the memory is tested, the memory size is displayed in the
top-left corner of the screen and increases in 64KB increments until
the total system memory is tested.
2.
One short beep sounds when the POST has successfully completed.
3.
The system attempts to load an operating system.
system is not found either in diskette drive A or on fixed disk drive
C (if installed), an icon is displayed requesting the user to insert a
diskette into drive A and press the F1 key to resume operation.
If the POST cannot be completed successfully, an error message is
displayed accompanied by the (RESUME = "F1" KEY) icon, requesting the user
to press the F1 key.
When the F1 key is pressed, the system unit bypasses
the error and attempts to complete the POST.
encountered, the POST stops.
HMR Diagnostics for Non Micro Channel
Power-On Self-Test (POST)
The following occurs:
If an operating
If a critical error is
¦ Copyright IBM Corp. 1990
3.0 - 1
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