Memory - IBM PS/2 N51 SX Hardware Maintenance Service

9.0 Memory

Customer diagnostics can eliminate defective memory so no memory error
code appears at power-on reset.
module kit, run 5. Automatic configuration or the new memory will not be
recognized. Power-off the system 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.
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IBM PS/2 Model N51 SX HMS
Memory
After you replace a defective memory
¦ Copyright IBM Corp. 1991
9.0 - 1