Monitor problems
Action
Wavy, unreadable,
rolling, distorted screen,
or screen jitter.
Verify that the correct device driver is properly installed.
If the monitor self-tests show that the monitor is OK, 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. The distance between monitors and diskette drives should be
at least 76 mm (3 in.) to prevent diskette drive read/write
errors.
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. See your IBM
reseller or IBM marketing representative for information on the
enhanced monitor cable.
If the problem recurs, have the monitor and system serviced.
The monitor works when
you turn on the system,
but goes blank when you
start some application
programs.
Verify that the primary monitor cable is connected to the video port.
Be sure that you installed the necessary drivers for the application.
Blank screen
Verify that:
1. The server power cord is plugged into the server and a working
electrical outlet.
2. The monitor power cord is plugged into the monitor and a working
electrical outlet.
3. The monitor is turned on and the Brightness and Contrast controls are
adjusted correctly.
4. The monitor signal cable is connected to the correct connector on the
system.
If the items above are correct and the screen remains blank, have the
system serviced.
Only the cursor appears.
Have the system serviced.
Wrong characters appear
on the screen.
Have the system serviced.
General problems
Action
problems such as
indicator lights not
working.
Have the system serviced.
System continuously
restarts.
Run the diagnostic programs. If the problem recurs, have the system
serviced.
Server does not respond
to the Power On or Reset
button.
Unattended-start mode might be enabled; enter the user password to
disable unattended-start mode and try again (see “System security” on
page 24).
If the server still does not respond, have the system serviced.
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