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Device Suggested action
The monitor has screen jitter,
or the screen image is wavy,
unreadable, rolling, or
distorted.
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. To prevent diskette drive read/write errors, make sure that the distance between
the monitor and diskette drive is at least 76 mm (3 in.).
2. Non-IBM monitor cables might cause unpredictable problems.
3. 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.
All other symptoms Troubleshoot the blade server that is the current owner of the keyboard, video, and
monitor.
Power problems
Device Suggested action
The BladeCenter unit does
not start.
v Make sure that the power cables are properly connected to the power modules in
the BladeCenter 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 unit. If the
BladeCenter unit now starts, you might have installed more options than the power
module supports.
If the problem remains, call for service.
Management module problems
Device Suggested action
Management module does
not complete changeover to
redundant module on
hardware failure.
Call for service.
Blower module problems
Device Suggested action
Blower module operates at
full speed, with no regulation.
Make sure that:
v Both blower modules are functioning (neither has failed).
v Each power module is connected to an ac power source. A power module that is
not connected to an ac power source creates a non-redundant-power condition
and causes the blower modules to operate at full speed.
If a blower module has failed, replace the module as soon as possible.
Chapter 6. Solving problems 55