IBM HS40 - BladeCenter - 8839, Installation And User Manual

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Monitor problems
Note: The monitor remains blank until it is directed to a blade server that is turned
on; this is normal behavior.
Symptom Suggested action
The monitor goes blank when
you direct it to a working
blade server, or it goes blank
when you start some
application programs in the
blade servers.
Make sure that the monitor cable is connected to the video connector on the
BladeCenter management module. 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 still cannot find the problem, try using the monitor with another blade server. If
the problem remains, see the IBM BladeCenter Type 8677 Hardware Maintenance
Manual and Troubleshooting Guide on the IBM BladeCenter Documentation CD or
the IBM BladeCenter T Types 8720 and 8730 Hardware Maintenance Manual and
Troubleshooting Guide on the IBM BladeCenter T Documentation CD.
The screen is blank. Make sure that:
v The keyboard/mouse/video select button LED on the front of the blade server is lit,
indicating that the blade server is connected to the shared BladeCenter monitor.
v The power cord is connected to the BladeCenter power module and a working
electrical outlet.
v
The monitor cables are connected correctly.
v
The monitor is turned on and the brightness and contrast controls are adjusted
correctly.
Important: In some memory configurations, the 3-3-3 beep code might sound during
POST, followed by a blank monitor screen. If this occurs and the Boot Fail Count
feature in the Start Options of the Configuration/Setup Utility program is enabled (its
default setting), you must restart the server three times to force the BIOS to reset the
configuration settings to the default configuration (the memory connector or bank of
connectors enabled).
If the problem remains, call for service.
Only the cursor appears. Make sure that the keyboard, video, and mouse on the BladeCenter unit have not
been switched to another blade server.
If the problem remains, call for service.
The monitor has screen jitter,
or the screen image is wavy,
unreadable, rolling, or
distorted.
If the monitor self-tests show 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. Move the
device and the monitor at least 300 mm (12 in.) apart and turn on the monitor.
Attention: Moving a color monitor while it is turned on might cause screen
discoloration.
Notes:
1. To prevent diskette drive read/write errors, make sure that the distance between
the monitor and diskette drives is at least 75 mm (3 in.).
2. Non-IBM monitor cables might cause unpredictable problems.
3. An enhanced monitor cable with additional shielding is available for the 9521 and
9527 monitors. For information about the enhanced monitor cable, see your IBM
marketing representative or authorized reseller.
If the problem remains, call for service.
Chapter 6. Solving problems
69