Monitor Problems - IBM 8677 - BladeCenter Rack-mountable - Power Supply Installation And User Manual

Monitor problems

Note: The monitor screen remains blank until the monitor is directed to a blade
Some IBM monitors have their own self-tests. If you suspect a problem with your
monitor, see the information that comes with the monitor for instructions for testing
and adjusting the monitor. If you cannot diagnose the problem, call for service.
Symptom
The screen is blank.
Only the cursor appears.
The monitor has screen jitter,
or the screen image is wavy,
unreadable, rolling, or
distorted.
All other symptoms
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BladeCenter E Type 8677: Installation and User's Guide
server that is turned on; this is normal behavior.
Suggested action
Make sure that:
v The BladeCenter unit power cord is connected to a BladeCenter power module
and a working 220-volt PDU.
v The monitor cables are connected correctly.
v The monitor is turned on and the brightness and contrast controls are adjusted
correctly.
v The monitor is owned by a blade server that is turned on.
v The blade server supports the KVM.
If the problem remains, call for service.
Try switching the monitor to another blade server.
v If the problem does not occur, troubleshoot the blade sever for which only the
cursor appears.
v If the problem remains, call for service.
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.
Attention: Moving a color monitor while it is turned on might cause screen
discoloration. Move the device and the monitor at least 305 mm (12 in.) apart, and
turn on the monitor.
Notes:
1. For a media tray equipped with a diskette drive, make sure that the distance
between the monitor and diskette drive is at least 76 mm (3 in.) to prevent
diskette drive read/write errors,
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.
Troubleshoot the blade server that is the current owner of the KVM.