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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. Pay close attention to the error messages
on the screen.
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
Diagnostics” on page 51.
3. Use the following table to locate the description that
best matches the symptom, then go to the page
indicated.
Symptom Go to
AC Adapter “Checking the AC Adapter”
on page 36.
Audio Card “Audio Card Checkout” on
page 34.
Battery Pack “Checking the Battery Pack”
on page 37.
Configuration is not the
same as the installed
devices.
“How to Run Diagnostics”
on page 51.
Diskette Drive “Diskette Drive Checkout”
on page 34.
Keyboard/Auxiliary Device
(Mouse/Pointing Device)
“Keyboard/Auxiliary Input
Device Checkout” on
page 33.
Memory related problems “Memory Checkout” on
page 31.
Operational Charging “Checking Operational
Charging” on page 37.
Other symptoms.
(Such as LCD problems.)
“Symptom-to-FRU Index” on
page 41, and then use
other miscellaneous
symptoms tables.
Port Replicator “Port Replicator Power
Overload” on page 40.
POST does not complete.
No beeps/error code are
indicated.
“Symptom-to-FRU Index” on
page 41, and then use the
No Beep Symptoms table.
POST beeps, but no error
codes are displayed.
“Symptom-to-FRU Index” on
page 41, and then use the
Beep Symptoms table.
30 IBM Mobile Systems - ThinkPad HMM Volume 3