IBM eServer BladeCenter JS20 Installation And User Manual page 111

Table 3. Light path diagnostics (continued)
Lit blade-error
LED Cause
Temperature error The system temperature has exceeded a
threshold level.
IDE bus x error The IDE bus indicated by the error LED has
failed.
Processor x The microprocessor circuit is defective, and
phase-locked loop cannot process the required signals.
(PLL) error
VRM error The integrated VRM on the system board has
failed.
Action
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 6 for temperature information.)
If the problem remains, have the blade server
serviced.
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 as described in "Replacing the
system board" on page 35.
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.
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.
Contact a service support representative for
assistance.
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. Contact a service support
representative for assistance.
Chapter 8. Solving problems
95