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Table 5. Engine troubleshooting symptoms and suggested actions (continued)
Device/Problem Symptom Suggested action
Monitor Testing the monitor. Some IBM monitors have their own self-tests. If you suspect a
problem with your monitor, refer to the information that comes
with the monitor for adjusting and testing instructions.
If you still cannot find the problem, call for service.
The screen is blank. Verify that:
1. The appliance power cord is plugged into the appliance and a
working electrical outlet.
2. The monitor cables are connected properly.
3. The monitor is turned on and the Brightness and Contrast
controls are adjusted correctly.
If the items above are correct and the screen remains blank, call
for service.
Only the cursor
appears.
Call for service.
The monitor works
when you turn on the
appliance, but goes
blank when you start
some application
programs.
Verify that:
1. The primary monitor cable is connected to the video port.
2. You installed the necessary device drivers for the applications.
If the items above are correct and the screen remains blank, call
for service.
Wavy, unreadable,
rolling, distorted screen,
or screen jitter.
If the monitor self-tests show 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. 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.
Wrong characters
appear on the screen.
If the wrong language is displayed, update the BIOS with the
correct language.
If the problem remains, call for service.
54 NAS 200 User’s Reference