IBM eServer 250 xSeries, User Reference Manual

Page: 143 / 186

Chapter 6. Solving problems
129
On CPU One of the microprocessors has failed,
or a microprocessor is installed in the
wrong connector. 1. Check the microprocessor error
LEDs on the memory board. If a
microprocessor error LED is on
for a microprocessor connector
that has a terminator card
installed instead of a
microprocessor, the
microprocessors are not installed
in the correct order.
See“Installing a microprocessor
kit” on page 70 for information
about the correct order for
installing microprocessors and
VRMs. Otherwise, continue with
the next step.
2. Turn off the server, reseat the
microprocessor indicated by the
lit microprocessor error LED, and
restart the server.
3. If the problem persists, replace
the microprocessor.
If the problem persists, have the
system serviced.
On VRM One of the voltage regulator modules
on the processor board has failed. 1. Check the VRM error LEDs on
the processor board.
2. Turn off the server, reseat the
VRM indicated by the lit VRM
error LED, and restart the server.
3. If the problem persists, replace
the VRM.
If the problem persists, replace the
VRM.
On FAN One of the fan assemblies has failed or
is operating too slowly.
Note: A failing fan can also cause
the TEMP and DASD LEDs to
be on.
The LED on the failing fan assembly
will be lit. Replace the fan assembly.
On TEMP The system temperature has exceeded
the maximum rating. 1. Check to see if a fan has failed. If
it has, replace the fan.
2. Make sure that the room
temperature is not too high. See
“Features and specifications” on
page 2
.
3. Check for blocked air flow.
If the problem persists, have the
system serviced.
System error
LED (on the
information LED
panel)
Diagnostics
panel LED on
Cause Action
Table 18. Light Path Diagnostics.