IBM N6270 Hardware And Service Manual page 75

Procedure
1. Complete the applicable step, depending on where the node halted during the
boot process:
v If the node halted at the Loader prompt, continue with the next step in this
procedure.
v If the node halted at the Boot menu, then perform the following steps to
reach the Loader prompt before continuing with this procedure.
a. Select the Maintenance mode option from the displayed menu.
b. Enter the following command at the prompt: halt
After you issue the command, wait until the system stops at the
LOADER prompt.
c. Continue with the next step in this procedure.
2. On the target node, enter the following command at the LOADER prompt:
boot_diags
Important: During the boot_diags process, you must enter y to the following
question before the system will boot to Maintenance mode: WARNING: System id
mismatch. This usually occurs when replacing CF or NVRAM cards! Override
system ID? {y|n} [n] y
Note: You must run this command from the LOADER prompt for system-level
diagnostics to function properly. The boot_diags command starts special
drivers designed specifically for system-level diagnostics.
The Maintenance mode prompt (*>) appears.
3. Enter the following command at the Maintenance mode prompt:
sldiag
For details about the sldiag command, see the sldiag man page.
4. Clear the status logs by entering the following command:
sldiag device clearstatus
5. Verify that the log is cleared by entering the following command:
sldiag device status
The following default response is displayed:
SLDIAG: No log messages are present.
6. Check the status of the system memory by entering the following command at
the prompt, depending on which DIMM was replaced:
If the DIMM that was replaced was the...
NVMEM DIMM
System DIMM
7. View the status of the test by entering the following command: sldiag device
status Your storage system provides the following output while the tests are
still running:
There are still test(s) being processed.
After all the tests are complete, the following response appears by default:
Then issue this command...
sldiag device run -dev nvmem
sldiag device run -dev mem
Replacing N6200 series system devices
49