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100 IBM® xSeries 220 User’s Reference
On VRM 1 or VRM 2
(system board)
One of the microprocessor VRMs has
failed, or a microprocessor VRM is
installed in the wrong connector.
1. Check the microprocessor VRM
error LEDs on the system board.
If a microprocessor VRM error
LED is on for a microprocessor
VRM connector that has a
terminator card installed instead
of a microprocessor, the
microprocessor VRMs are not
installed in the correct order. See
“Installing and removing a
microprocessor” on page 54 for
information about the correct
order for installing
microprocessor VRMs.
Otherwise, continue with the
next step.
2. Turn off the server, reseat the
microprocessor VRM indicated
by the lit microprocessor VRM
error LED, and restart the server.
3. If the problem persists, replace
the microprocessor VRM.
If the problem persists, have the
system serviced.
On System error
(front panel)
The diagnostic LEDs have detected a
system error.
1. Check the error LEDs on the
system board to locate the failing
or incorrectly installed
component.
2. Follow the instructions in this
table for replacing the failing
component or removing and
reinstalling the incorrectly
installed component.
If the problem persists, have the
system serviced.
Off None The diagnostic LEDs have not
detected a system error.
None
Error LED (on the
system board or
front panel)
System board or
front panel LED
on
Cause Action
Table 15. Diagnostic LEDs