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Index of Symptoms, Messages, Error Codes, or Beeps
How to Use Error Messages: Use the messages, error
codes, and beeps combinations that occur to diagnose
failures. If more than one failure occurs, diagnose from the
first failure that appears. The cause of the first failure can
result in false messages, error codes, or beeps. If you did not
receive any messages, error codes, or beeps, see if the
symptom is listed in Table 2-3, "Error Symptoms List” on page
67.
ATTENTION: When you have replaced a FRU, you must run
the diagnostics to ensure that no other
activity has been affected by the change.
This system check can be done through the
diagnostics program (Select Diagnostics,
then select and execute All Tests from PC-
Doctor).
POST: Some diagnostic aids are resident in the machine,
such as the Power-On Self Test (POST). The machine
performs the POST each time it is powered on. Use this
information throughout the diagnostic procedures. The POST
is a series of system checks and initializations that verify the
correct operation of the base system.
After a successful POST, the system attempts to load
operating system. The system can be customized for different
startup (boot) methods by the BIOS Setup Utility. See
“Advanced Setup” on page 44.
The system's default startup sequence automatically looks for
the operating system files in the hard disk if these files are not
found in the diskette.
NOTE: Remember that POST does not test all areas, but
only those that allow the system to operate well
enough to run the diagnostics program.
Table 2-1 lists BIOS error codes, messages, and beeps to
their possible causes, Table 2-3 lists error symptoms and
their possible causes. The most likely cause is listed first.
Make sure you complete all items in the cause or
"Action/FRU" column. When servicing a system, always
begin with "Start" on page 55.
If you are unable to correct the problem using these two index
tables, go to “Undetermined Problems” on page 93.
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