Memory Checkout - IBM ThinkPad 365C 2625 Maintenance Manual

Symptoms (Verified)
Symptoms cannot be
re-created. (Intermittent
problems).

Memory Checkout

DIMMs are available for increasing memory capacity.
DIMM Displayed Value
No DIMM installed 16000KB
8MB 24192KB
16MB 32384KB
32MB 48768KB
Memory errors might stop system operations, 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 fully installed into the
connector. A loose connection can cause an error.
1. Power off the computer and remove the DIMM from
its slot (if installed).
2. Press and hold the F1 key; then power on the
computer. Hold the F1 key down until the
Easy-Setup screen appears.
3. Select Test and press Enter.
4. Select Memory and press Enter to run the memory
test on base memory. If an error appears, replace
the system board.
5. Power off the computer and reinstall the DIMM; then
power on the computer. Verify the memory size; then
test the memory. If an error appears, replace the
DIMM.
If memory problems occur intermittently, use the loop
option to repeat the test. When the test detects an error,
an error log is printed on the printer connected to the
parallel port. See "Error Log" on page 213 for more
information.
System Programs in Flash Memory:
programs and diagnostic tests are stored in flash memory.
Flash Memory Update:
A flash memory update is
required for the following conditions:
New versions of system programs.
New features or options are added.
To update the flash memory, do the following:
1. Get the appropriate diskette containing the update.
190
IBM Mobile Systems - ThinkPad HMM Volume 3
Go to
Use the customer
reported symptoms and
go to "Symptom-to-FRU
Index" on page 199.
System setup