IBM Flex System p24L Installation And Service Manual page 426

Checkout procedure
The checkout procedure is the sequence of tasks that you follow to diagnose a problem in the compute
node.
About the checkout procedure
Review this information before performing the checkout procedure.
v Read the Safety topic and the "Installation guidelines" on page 27.
v The firmware diagnostic program provides the primary methods of testing the major components of
the compute node. If you are not sure whether a problem is caused by the hardware or by the
software, you can use the firmware diagnostic program to confirm that the hardware is working
correctly. The firmware diagnostic program runs automatically when the compute node is turned on.
v A single problem might cause more than one error message. When this happens, correct the cause of
the first error message. The other error messages usually will not occur the next time you run the
diagnostic programs.
v If the compute node hangs on a POST checkpoint, see "POST progress codes (checkpoints)" on page
196. If the compute node is halted and no error message is displayed, see "Troubleshooting by
symptom" on page 419 and "Solving undetermined problems" on page 457.
v For intermittent problems, check the management-module event log and "POST progress codes
(checkpoints)" on page 196.
v If the compute node front panel shows no LEDs, verify the compute node status and errors in the IBM
Flex System Enterprise Chassis Web interface. Also, see "Solving undetermined problems" on page 457.
v If device errors occur, see "Troubleshooting by symptom" on page 419.
Performing the check-out procedure
Follow this procedure to perform the check-out.
About this task
1. Establish a Serial over LAN (SOL) session. For information about starting an SOL session, see the IBM
Chassis Management Module Command-Line Interface Reference Guide. Continue to Step 2.
Note: If the compute node does not start, see "Troubleshooting by symptom" on page 419.
2. Verify that you have looked up each error code or hung checkpoint and attempted the corrective
action before going to the next step:
a. If the firmware hangs on an 8 digit progress code, see "POST progress codes (checkpoints)" on
page 196.
b. If the firmware records an 8 digit error code, see "System reference codes (SRCs)" on page 90.
c. Check the event log. If an error was recorded by the system, see "POST progress codes
(checkpoints)" on page 196 or "System reference codes (SRCs)" on page 90.
d. If no error was recorded, or if the login prompt appears and you still suspect a problem, continue
with the next step.
3. Is the compute node running the Linux operating system?
Record any information or messages that are in the event log, and go to Step 7. If you cannot
Yes
load the stand-alone diagnostics image, answer this question as No.
No Go to "Solving undetermined problems" on page 457.
4. Perform the following steps:
a. Ensure that the device from which you load the stand-alone diagnostics is set as the first device in
the compute node boot sequence.
b. Turn off the compute node and wait 45 seconds before proceeding.
c. Turn on the compute node and establish an SOL session.
d. Check for the following responses:
414
Power Systems: IBM Flex System p24L Compute Node Installation and Service Guide