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Video problems
To check for video problems, complete the following steps until the problem is
solved:
1. Make sure that:
2. Check for correct management-module operation (see the documentation for
3. Replace the monitor cable, if applicable.
4. Replace the monitor.
5. Replace the management module (see the documentation for your BladeCenter
If these steps do not resolve the problem, it is likely a problem with the blade
workstation. See "Monitor or video problems" on page 60.
Solving undetermined problems
Note: When you are diagnosing a problem in the blade workstation, you must
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BladeCenter HC10 Type 7996: Problem Determination and Service Guide
v Both the blade workstation and the monitor are turned on, and that the
monitor brightness and contrast controls are correctly adjusted.
v The keyboard/video/mouse select button LED on the front of the blade
workstation is lit, indicating that the blade workstation is connected to the
shared BladeCenter monitor.
v The video cable is securely connected to the BladeCenter
management-module. Non-IBM monitor cables might cause unpredictable
problems.
v The monitor works with another blade workstation.
v 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.).
your BladeCenter unit).
Note: Some BladeCenter unit types have several management-module
components that might need to be tested or replaced (see the Installation
Guide for your management module for more information).
unit).
determine whether the problem is in the blade workstation or in the
BladeCenter unit.
v If all of the blade workstations have the same symptom, the problem is
probably in the BladeCenter unit. For more information, see the Hardware
Maintenance Manual and Troubleshooting Guide or Problem
Determination and Service Guide for your BladeCenter unit.
v If the BladeCenter unit contains more than one blade workstation and only
one of the blade workstations has the problem, troubleshoot the blade
workstation that has the problem.
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