Power Problems; Management Module Problems; Blower Module Problems - IBM BladeCenter T 8720 Installation And User Manual

Device
The monitor has screen jitter,
or the screen image is wavy,
unreadable, rolling, or
distorted.
All other symptoms

Power problems

Device
The BladeCenter T unit does
not start.

Management module problems

Device
Management module does
not complete changeover to
redundant module on
hardware failure.

Blower module problems

Device
Blower module operates at
full speed, with no regulation.
Suggested action
If the monitor self-tests show the monitor is working correctly, consider the location of
the monitor. Magnetic fields around other devices (such as transformers, appliances,
fluorescent lights, and other monitors) can cause screen jitter or wavy, unreadable,
rolling, or distorted screen images. If this happens, turn off the monitor. (Moving a
color monitor while it is turned on might cause screen discoloration.) Then move the
device and the monitor at least 305 mm (12 in.) apart. Turn on the monitor.
Notes:
1. Non-IBM monitor cables might cause unpredictable problems.
2. An enhanced monitor cable with additional shielding is available for the 9521 and
9527 monitors. For information about the enhanced monitor cable, contact your
IBM marketing representative or authorized reseller.
If the problem remains, call for service.
Troubleshoot the blade server that is the current owner of the keyboard, video, and
monitor.
Suggested action
v Make sure that the power cords are properly connected to the BladeCenter T unit.
v Make sure that the 220-volt PDU or electrical outlet is working correctly.
v Make sure that the LEDs on the power module are on.
v If you just installed an option, remove it, and restart the BladeCenter T unit. If the
BladeCenter T unit now starts, you might have installed more options than the
power module supports.
If the problem remains, call for service.
Suggested action
Call for service.
Suggested action
Make sure that both blower modules are functioning (neither has failed).
If a blower module has failed, replace the module as soon as possible.
Chapter 6. Solving problems
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