Troubleshooting Charts; Monitor Problems - IBM BladeCenter T 8720 Installation And User Manual

Troubleshooting charts

You can use the troubleshooting charts in this section to find solutions to problems
that have definite symptoms.
Note: The symptoms for monitor, keyboard, and mouse apply only to the devices
See the Hardware Maintenance Manual and Troubleshooting Guide on the IBM
BladeCenter T Documentation CD for more detailed information about testing the
BladeCenter T unit. If you have run the diagnostic test programs or if running the
tests does not reveal the problem, call for service.
Attention:
Hardware Maintenance Manual and Troubleshooting Guide, make sure that your
BladeCenter T unit has the latest level of firmware code installed.
If you have just added a new option and your system is not working, complete the
following procedure before using the troubleshooting charts:
1. Remove the option that you just added.
2. Run the diagnostic tests to determine if your system is running correctly.
3. Reinstall the new device.

Monitor problems

Note: The monitor screen remains blank until directed to a blade server that is
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.
Device
The monitor screen goes
blank when you direct it to a
working blade server or goes
blank when you start some
application programs in the
blade servers.
The screen is blank.
Only the cursor appears.
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BladeCenter T Types 8720 and 8730: Installation and User's Guide
connected to the management module; they do not apply to the remote
console.
If diagnostic error messages appear that are not listed in the
turned on; this is normal behavior.
Suggested action
Make sure that the monitor cable is connected to the video connector on the
BladeCenter T KVM module and that the KVM module LEDs indicate that the module
is functioning. 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 adjusting and
testing instructions.
If you cannot diagnose the problem, try replacing the KVM module. If the problem
remains, replace the monitor.
Make sure that:
v The power cords are properly connected to the BladeCenter T unit.
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.
If the problem remains, call for service.
Try switching the monitor to another blade server.
v If the problem goes away, troubleshoot the blade sever for which only the cursor
appears.
v If the problem remains, call for service.