IBM eServer BladeCenter JS20 Type 8842, Installation And User Manual

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Table 3. Light path diagnostics (continued)
Lit blade-error
LED Cause Action
Temperature error The system temperature has exceeded a
threshold level.
1. Check to see if a blower on the
BladeCenter unit has failed. If it has,
replace the blower.
2. Make sure the room temperature is not too
high. (See “Features and specifications” on
page 25 for temperature information.)
If the problem remains, have the blade server
serviced.
IDE bus x error The IDE bus indicated by the error LED has
failed.
1. Reseat or replace the hard disk drive (or
other IDE device) on IDE bus x .
2. If the LED stays on, replace the
system-board assembly as described in
“Replacing the system-board assembly” on
page 45.
3. Replace the blade server cover, reinsert
the blade server in the BladeCenter unit,
and then restart the server.
If the problem remains, have the blade server
serviced.
Processor x
phase-locked loop
(PLL) error
The microprocessor circuit is defective, and
cannot process the required signals.
Attention: To help ensure proper cooling and
system reliability, two microprocessors and two
heat sinks are required on the system board in
the blade server at all times. The
microprocessors and heat sinks on the system
board are not replaceable. Therefore, if a
microprocessor or heat sink becomes
defective, you must replace the system-board
assembly. Contact a service support
representative for assistance.
VRM error The integrated VRM on the system board has
failed.
1. To verify the error, replace the blade-server
cover, reinsert the blade server in the
BladeCenter unit, and then restart the
server.
2. If the LED stays lit, replace the
system-board assembly. Contact a service
support representative for assistance.
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BladeCenter JS20 Type 8842: Installation and User’s Guide