IBM Netfinity 3000, User Handbook Manual, Page: 240 / 370

Troubleshooting
Monitor problems Action
Wavy, unreadable,
rolling, distorted screen,
or screen jitter. If the monitor self-tests show that the monitor is
working properly, verify that:
1. The location of the monitor is appropriate.
Magnetic fields around other devices, such as
transformers, appliances, fluorescent lights, and
other monitors might be causing the problem. To
determine if the location is causing the problem:
a. Turn off the monitor. (Moving a color monitor
while it is turned on might cause screen
discoloration.)
b. Adjust the placement of the monitor and other
devices so that they are at least 305 mm (12 in.)
apart. Also, when relocating the monitor, be
sure that it is at least 76 mm (3 in.) from the
diskette drives to prevent diskette drive
read/write errors.
c. Turn on the monitor.
2. An IBM monitor signal cable is properly connected
to the monitor and server, and that the cable is
installed securely. Non-IBM monitor signal cables
might cause unpredictable problems.
3. You are not trying to run your monitor at a higher
refresh rate than the monitor supports. Refer to the
documentation that comes with your monitor for
the supported refresh rates.
Note: An enhanced monitor signal cable with
additional shielding might be available for your
monitor. Contact your IBM reseller or marketing
representative for information.
If the problem still exists, have the monitor and system
serviced.
Wrong characters appear
on the screen. Have the system serviced.
General problems Action
Problems such as broken
cover locks or indicator
lights not working. Have the system serviced.
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Netfinity 3000 User's Handbook