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General Checkout
Use the following procedure as a guide for computer
problems.
Note: The diagnostic tests are intended to test
only
IBM
products. Non-IBM products, prototype cards, or modified
options can give false errors and invalid system responses.
1. Obtain the failing symptoms in as much detail as
possible.
2. Verify the symptoms by attempting to recreate the
failure by running the diagnostic test or by repeating
the same operation.
Note: To run the diagnostics, refer to “How to Run
the Diagnostics” on page 229.
3. Use the following table with the verified symptom to
determine which page to go to. Search the
symptoms column and find the description that best
matches your symptom; then go to the page shown in
the “Go to” column.
Symptom Go to
Power failure. (The power
indicator does not go on or
stay on.)
“Power Systems Checkout”
on page 207.
POST does not complete.
No beeps/error code are
indicated.
“Symptom-to-FRU Index” on
page 216, and then use the
No Beep Symptoms table.
POST beeps, but no error
codes are displayed.
“Symptom-to-FRU Index” on
page 216, and then use the
Beep Symptoms table.
POST detected an error and
displayed numeric error
codes.
“Symptom-to-FRU Index” on
page 216, and then use the
Numeric Error Codes table.
The diagnostic test detected
an error and displayed an
FRU code.
“FRU Codes” on page 220.
The configuration is not the
same as the installed
devices.
“Checking the Installed
Devices List” on page 230.
Other symptoms (such as
LCD display problems).
“Symptom-to-FRU Index” on
page 216, and then use
other miscellaneous
symptoms tables.
Symptoms cannot be
recreated. (Intermittent
problems.)
Use the customer reported
symptoms and go to
“Symptom-to-FRU Index” on
page 216.
TV Tuner Problems See “TV Tuner” on
page 477.
200 IBM Mobile Systems HMM