Sun Microsystems SPARCserver 1000 Service Manual page 71

B.1
A terminal is required to see the failed test. If POST is run in the diagnostic mode, the failing
board will loop on the error. The LED pattern should be frozen, except for memory tests.
Connect a terminal to the failed board. Initiate POST for more details on the
failure. Retry the self-test that failed to ensure it is not an intermittent failure.
Run the diagnostic menu (See Section 3.7, "Running OBP and POST" for
instructions.) Examine the system status display.
Do messages
indicate a board or
module error?
Yes
SIMM memory is checked during POST. The J-number and physical address of the failed SIMM is
B.2
displayed on the terminal during POST.
Record the J number of the failed SIMM. Find the SIMM location by checking Figure 11-13
Remove and replace the SIMM. Ensure that the SIMM replaced is of the correct value and properly
installed in the correct location.
Power on the unit in DIAG mode and observe POST to ensure the SIMM passes self-tests.
The system failed self-test.
No
In the diagnostic menu, enter the NVRAM Management menu
and test for memory failure.
If a board error, swap the system board, but retain the modules.
If a module error, follow Branch A.1 and swap out the module.
Figure 3-6 Branch B.1: Fails Self-Test
Figure 3-7 Branch B.2: SIMM Memory Fault
Troubleshooting Flow Diagrams
3
B.2
A.2
B.3
3-7