Chapter 7. Symptom-to-FRU index
The Symptom-to-FRU index lists error symptoms and possible causes. The most
likely cause is listed first. Always begin with the Chapter 4, “General checkout,” on
page 43. You can use this index to help you decide which FRUs are needed when
servicing a computer. If you are unable to correct the problem using this index, go
to “Undetermined problems” on page 80.
Notes:
1. If you have both an error message and an incorrect audio response, diagnose the error
message first.
2. If you cannot run the diagnostic tests or you get a diagnostic error code when running
a test, but did receive a POST error message, diagnose the POST error message first.
3. If you did not receive any error message, look for a description of your error symptoms
in the first part of this index.
4. For computer models that do not have an internal hard disk drive and use a remote
hard disk drive accessed through the SMC - Storage Array:
v You might receive the error message “No operating system found. Press F1 to repeat
boot sequence.” In this case, press Ctrl+Alt+Delete instead of F1 to establish a
connection to the storage area network where your operating system is stored. Verify
that the user name is not logged on in another location.
v If the SMC login prompt disappears before you log in and then a black screen
displays, contact the administrator.
Hard disk drive boot error
A hard disk drive boot error (error codes 1962 and I999030X) can have the
following causes.
Note: For computer models that do not have an internal hard disk drive and use a
remote hard disk drive accessed through the SMC - Storage Array, contact the
network or storage administrator.
Error FRU/Action
The start-up drive is not in the boot
sequence in configuration.
Check the configuration and ensure the
start-up drive is in the boot sequence.
No operating system installed on the boot
drive.
Install an operating system on the boot
drive.
The boot sector on the start-up drive is
corrupted.
The drive must be formatted, do the
following:
1. Attempt to back-up the data on the
failing hard disk drive.
2. Using the operating systems programs,
format the hard disk drive.
The drive is defective. Replace the hard disk drive.
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