IBM eServer xSeries 440 Installation Manual page 66

Device
Wavy, unreadable, rolling,
distorted screen, or screen
jitter.
Wrong characters appear on
the screen.
Option
An IBM option that was just
installed does not work.
An IBM option that used to work
does not work now.
Power
The system does not power on.
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xSeries 440:Installation Guide
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:
1. To prevent diskette drive read/write errors, be sure the distance between
monitors and diskette drives is at least 76 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
reseller or IBM marketing representative.
If the problem remains, call for service.
If the wrong language is displayed, update the BIOS code with the correct language.
If the problem remains, call for service.
Verify that:
1. The option is designed for the server. See the "Server Support" flowchart on the
inside of the front cover for information about obtaining ServerProven
compatibility information from the World Wide Web.
2. You followed the installation instructions that came with the option.
3. The option is installed correctly.
4. You have not loosened any other installed options or cables.
5. You updated the configuration information in the Configuration/Setup Utility
program. Whenever memory or an option is changed, you must update the
configuration.
If the problem remains, call for service.
Verify that all of the option hardware and cable connections are secure.
If the option comes with its own test instructions, use those instructions to test the
option.
If the failing option is a SCSI option, verify that:
1. The cables for all external SCSI options are connected correctly.
2. The last option in each SCSI chain, or the end of the SCSI cable, is terminated
correctly.
3. All external SCSI options are turned on. You must turn on external SCSI options
before turning on the server.
If the problem remains, call for service.
Verify that:
1. The power cables are properly connected to the server.
2. The electrical outlet functions properly.
3. The type of memory installed is correct.
4. If you just installed an option, remove it, and restart the server. If the server now
turns on, you might have installed more options than the power supply supports.
5. The LEDs on the power supply are on.
If the problem remains, call for service.
Suggested action