IBM Flex System p24L Installation And Service Manual page 462

Table 17. IBM Flex System p24L Compute Node (continued)
v Follow the suggested actions in the order in which they are listed in the Action column until the problem is
solved.
v See Chapter 7, "Parts listing for IBM Flex System p24L Compute Node," on page 79 to determine which
components are CRUs and which components are FRUs.
v If an action step is preceded by Trained service technician only, that step must be performed only by a trained
service technician.
Light path
diagnostics LED is
lit Description
Management card A system board error occurred.
error
P1-C21
System board error A system-board and chassis assembly error
has occurred. A microprocessor failure shows
P1
up as a system-board and chassis assembly
error.
Isolating firmware problems
You can use this procedure to isolate firmware problems.
About this task
To isolate a firmware problem, follow the procedure until the problem is solved.
Procedure
1. If the compute node is operating, shut down the operating system. Use the CMM to perform a virtual
reseat. If the problem no longer occurs, no further action is necessary. You are finished with this
procedure.
2. Start the PERM image. See "Starting the PERM image" on page 453.
3. Verify the system firmware levels. See "Verifying the system firmware levels" on page 17.
4. Choose one of the following options:
v Remain on the current firmware level. See "Recovering the TEMP image from the PERM image" on
page 453.
v Check the RETAIN tips and code change history. If a firmware update is needed, see "Updating the
firmware" on page 15.
450
Power Systems: IBM Flex System p24L Compute Node Installation and Service Guide
Action
Replace the management card assembly, as
described in "Removing the management
card" on page 57 and "Installing the
management card" on page 59.
1. Replace the compute node cover, reinsert
the compute node in the IBM Flex System
Enterprise Chassis, and then restart the
compute node.
2. Check the event log for information about
the error.
3. Replace the system-board and chassis
assembly, as described in "Replacing the
system-board and chassis assembly" on
page 67.