Troubleshooting
Problem
This document tells you how to troubleshoot monitor problems on the IBM BladeCenter
Resolving The Problem
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To begin troubleshooting, check the following top issues. If your issue is listed, select the link, otherwise, proceed to step 2.
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Check our video troubleshooting documents to see if the problem is with the monitor or flat panel display itself.
Video display troubleshooting
- If these steps have not solved your problem,
Refer to your system's Hardware Maintenance Manual, Or refer to "Need more help?"
See the "IBM 4-Port GB Ethernet Switch Module for BladeCenter Installation Guide" for instructions on how to ping through the Telnet interface.
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The monitor attached to the BladeCenter management module normally shows the video output from the blade server that is the current owner of the keyboard, video, and mouse (KVM). When there is no actively selected video from any blade server, the video from blade server 14 is routed to the management module. While the management module is restarting, there is temporarily no current KVM owner. The video from blade server 14 displays on the monitor briefly until the management module uses its NVRAM values to reestablish ownership of the KVM and media tray (CD-ROM drive, diskette drive, and USB port). After that, the video from the blade server that is the current KVM owner displays on the monitor.
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Verify that:
- The system power cord is plugged into the BladeCenter power module and a working 220-volt PDU or electrical outlet.
- The monitor cables are connected properly.
- The monitor is turned on and the brightness and contrast controls are adjusted correctly.
- If you have verified these items and the screen remains blank, troubleshoot or replace the:
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See "Undetermined problems" in the Hardware Maintenance Manual (HMM)
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If the monitor self-tests show the monitor is working properly, 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. (Moving a color monitor while it is turned on might cause screen discoloration.) Then move the device and the monitor at least 305 mm (12 in.) apart. Turn on the monitor.
Notes:
- To prevent diskette drive read/write errors, be sure the distance between monitors and diskette drives is at least 76 mm (3 in.).
- Non-IBM monitor cables might cause unpredictable problems.
- 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 reseller or IBM marketing representative.
If the problem remains, troubleshoot the monitor, or replace the monitor.
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If the wrong language is displayed, update the firmware in the management module with the correct language. If the problem remains, troubleshoot or replace the management module.
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Document Location
Worldwide
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Document Information
Modified date:
29 January 2019
UID
ibm1MIGR-58894