2-4 Troubleshooting
2.4 POST Error Messages
If the system is not functioning well enough to run POST, or if the display is not
functioning well enough to show POST error messages, refer to the Troubleshooting
tables in Section 2.6.
If POST detects an error, one of the following events occurs:
■ A message with the prefix "WARNING" appears, informing you where the error
occurred. The system pauses until you press F1 to continue.
■ A message with the prefix "FATAL" appears, informing you where the error
occurred. After the message, the system emits a series of beeps and stops.
WARNING messages indicate that a potential problem, such as a system configuration
error, exists. When F1 is pressed, the system should resume. You should be able to
correct problems that produce WARNING messages.
IMPORTANT: When a WARNING message includes the prompt to "RUN SCU," press
F10 to run Computer Setup. (Computer Setup replaces the SCU utility.)
If you receive one of the error messages listed below, follow the recommended action.
Table 2-1
Warning Messages
Message Description Recommended Action
CMOS checksum invalid, run SCU CMOS RAM information has
been corrupted and needs to
be reinitialized.
Run Computer Setup to reinitialize
CMOS-RAM.
CMOS failure, run SCU CMOS RAM has lost power. Run Computer Setup to reinitialize
CMOS-RAM.
Diskette controller error The diskette drive controller
failed to respond to the
recalibrate command.
If there is no diskette drive in the
system, run Computer Setup to
properly configure the CMOS-RAM to
show no diskette drive present. If the
problem persists, or if a diskette drive
is present, complete these steps until
the problems is solved:
1. Power-down the system and
check diskette drive
connections.
2. Replace diskette drive.
3. Replace system board.
Diskette track 0 failed The diskette drive cannot read
track 0 of the diskette in the
drive.
Try another diskette. If the problem
persists, you may need to replace the
diskette drive.
Continued
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