IBM N51 Series, Hardware Maintenance Manual

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Memory Checkout
Customer diagnostics can eliminate defective memory so
no memory error code appears at power-on reset. After
you replace a defective memory module kit, run 5.
Automatic configuration or the new memory will not be
recognized. (If you have to run configuration with your
own diskette, be sure the customer has all the correct
option diskettes available.) Power-off the computer before
removing or replacing parts.
001
– Remove the memory module kit in the connector if
installed.
– Run the memory tests.
Use the RUN TESTS ONE TIME option.
DID THE MEMORY TESTS END WITHOUT AN ERROR?
Yes No
002
Replace the system board.
003
DID YOU REMOVE THE MEMORY MODULE KIT IN THE
CONNECTOR?
Yes No
004
Go to Step 007.
005
– Reinstall the memory module kit in the connector and
run 5. Automatic configuration.
– Run the memory test.
Use the RUN TESTS ONE TIME option.
DID THE MEMORY TESTS END WITHOUT AN ERROR?
Yes No
006
Replace the memory module kit in the connector.
If that does not correct the problem, replace the
system board.
007
If the problem occurs intermittently, run the memory tests
multiple times to have an error log.
Model N51 (8551)
77