IBM BladeCenter JS12, Problem Determination And Service Manual

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6. Verify that the local power control for the blade server is set correctly.
See the online information for your management module or the
Management
Module User’s Guide or the Management Module Command-Line Interface Reference
Guide for more information.
7. Verify that the BladeCenter unit blowers are correctly installed and operational.
If these steps do not resolve the problem, it is likely a problem with the blade
server. See “Power problems” on page 202 for more information.
Solving shared video problems
Problems with BladeCenter shared resources might appear to be in the blade
server, but might actually be a problem in a BladeCenter unit video component.
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.
To check for video problems, perform the following procedure.
1. Verify that the monitor brightness and contrast controls are correctly adjusted.
2. Verify that the keyboard/video select button LED on the front of the blade
server is lit.
A lit indicator shows that the blade server is connected to the shared
BladeCenter monitor
3. Verify that the video cable is securely connected to the BladeCenter
management-module. Non-IBM monitor cables might cause unpredictable
problems.
4.
Verify that the monitor works with another blade server.
5. Move the device and the monitor at least 305 mm (12 in.) apart, then turn on
the monitor.
Attention: Moving a color monitor while it is turned on might cause screen
discoloration.
If the monitor self-tests show that the monitor is working correctly, the location
of the monitor might be affecting its operation. 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.
6. Verify that the management module is operating correctly.
See the documentation for your BladeCenter unit.
Some BladeCenter unit types have several management-module components
that you might test or replace.
See the online information or the
Installation Guide for your management
module for more information.
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JS12 Type 7998: Problem Determination and Service Guide