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2. Verify the symptoms by attempting to re-create the
failure by running the diagnostic test or by repeating
the same operation.
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.
Symptoms (Verified) Go to
Power failure. (The power
indicator does not go on or
stay on.)
“Power System Checkout”
on page 8.
POST does not complete.
No beeps, error codes, or
messages are indicated.
“Symptom-to-FRU Index” on
page 14 then see “No
Beep Symptoms” on
page 18.
POST detected an error and
displayed numeric error
code with error message.
“Symptom-to-FRU Index” on
page 14.
Other symptoms (such as
LCD display problems)
“Symptom-to-FRU Index” on
page 14 then use the
appropriate information on
pages 18 to 23.
Memory Checkout
DIMMs are available for increasing memory capacity.
Warning: This system will not work without DIMM memory
installed.
Memory errors might stop system operation, show error
messages on the screen, or hang the system. Use the
following procedure to isolate memory problems:
Note: Make sure that the DIMM is properly installed into
the connector. A loose connection can cause an error.
1. Power-off the computer and replace the DIMM.
DIMM DIMM Total
Memory
16MB 0MB 16MB
0MB 16MB 16MB
16MB 16MB 32MB
32MB 0MB 32MB
0MB 32MB 32MB
32MB 8MB 40MB
8MB 32MB 40MB
32MB 16MB 48MB
16MB 32MB 48MB
32MB 32MB 64MB
4 IBM Mobile Systems ThinkPad 310 (D/E/ED) HMM