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Table 36. Light path diagnostic LED descriptions (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 3, "Parts listing, type 7891," on page 225 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.
Lit light path
diagnostics LED
Description
CIOv form-factor
An I/O expansion card option error occurred.
expansion card
error
P1-C19
P2-C19
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.
P2
Isolating firmware problems
You can use this procedure to isolate firmware problems.
To isolate a firmware problem, follow the procedure until the problem is solved.
1. If the blade server is operating, shut down the operating system and turn off the blade server.
2. Turn on the blade server.
If the problem no longer occurs, no further action is necessary. You are finished with this procedure.
3. If the blade server boots up far enough to allow the installation of server firmware updates, check for
appropriate updates and install them.
If you install updates, reboot the server and see if the problem still exists. If not, you are finished with
this procedure.
216
Power Systems: Problem Determination and Service Guide for the IBM PS703 (7891-73X) and PS704 (7891-74X)
Action
1. Make sure that the I/O expansion option is
supported, as described on the
ServerProven Web site. See
http://www.ibm.com/servers/eserver/
serverproven/compat/us/.
2. Reseat the I/O expansion option, as
described in "Removing and installing an
I/O expansion card" on page 253.
3. Replace the I/O expansion option.
See "PCI expansion card (PIOCARD) problem
isolation procedure" on page 186 for more
information.
1. Replace the blade server cover, reinsert the
blade server in the BladeCenter unit, and
then restart the blade server.
2. Check the management-module event log
for information about the error.
3. Replace the system board and chassis
assembly, as described in "Replacing the
FRU system-board and chassis assembly"
on page 264.
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