Use this information to diagnose and resolve video issues .
To check for video problems, complete the following steps until the
problem is solved:
-
Make sure that:
- Both the blade server and the monitor are turned on, and the monitor brightness
and contrast controls are correctly adjusted.
- The keyboard/video/mouse select button LED on the front of the blade server
is lit, indicating that the blade server is connected to the shared BladeCenter
monitor.
- The video cable is securely connected to the BladeCenter management module.
Non-IBM monitor cables might cause unpredictable problems.
- The monitor works with another blade server.
- Some IBM monitors have their own self-tests. If you suspect a problem
with the monitor, see the information that comes with the monitor for instructions
for adjusting and testing the monitor. If the monitor self-tests show that
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. Turn on the monitor. To prevent diskette drive read/write
errors, make sure that the distance between the monitor and any diskette drive
is at least 76 mm (3 in.).
-
Check for correct management-module operation (see the documentation
for your BladeCenter unit).
Note: Some BladeCenter unit types have
several management-module components that might have to be tested or replaced
(see the Installation Guide for your management module for more information).
-
Replace the monitor cable, if applicable.
-
Replace the monitor.
-
Replace the management module (see the documentation for your BladeCenter
unit).