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General Checkout
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.
Warning:
Only trained personnel should service the computer.
Drives in the computer that you are servicing might
have been rearranged or the drive startup sequence
might have been altered. Be extremely careful during
write operations such as copying, saving, or
formatting. Data or programs can be destroyed if you
select an incorrect drive.
Perform the following procedures to complete a general
checkout:
1. Power-off the computer and all external devices.
2. Check all cables and power cords for correct
connection.
3. Power-on all external devices.
4. Power-on the computer.
5. Press the F1 key any time while the POST memory
count is proceeding. The computer emits one short
beep at the end of POST and the Easy-Setup screen
appears. If this does not occur, go to
“Symptom-to-FRU Index” on page 141.
6. Run the advanced diagnostics tests. For information
on how to run the diagnostics tests, see “Running the
Diagnostics” on page 156. For information on how to
disable the password, see “Removing the Power-On
Password” on page 156.
7. Find your symptom in the table in “Checkout Guide”
on page 127, and then go to the appropriate page.
Otherwise, see “Symptom-to-FRU Index” on
page 141, and then go to “Undetermined Problems”
on page 152.
Memory Checkout
Depending on the amount of additional memory installed
by the customer, the memory size that is available for
customer use appears differently. This is
not
a hardware
problem. Consult the following table for the available
memory on a system with a 4MB base memory when the
customer installs different sizes of small outline dual inline
memory module (SO-DIMM).
SO-DIMM
Installed
Total
Memory
Available Memory
None 4MB 3 712KB
4MB 8MB 7 808KB
8MB 12MB 11 904KB
16MB 20MB 20 096KB
128 IBM Mobile Systems HMM