Problem Determination and Service Guide - Public Support Login ...

Symptom Action
The monitor has screen
jitter, or the screen image
is wavy, unreadable,
rolling, or distorted.
Wrong characters appear
on the screen.
Optional-device problems
1. If the monitor self-tests show that 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.
Attention
Moving a color monitor while it is turned on might cause
screen discoloration.
Move the device and the monitor at least 305 mm (12 in.)
apart, and turn on the monitor.
Notes:
• To prevent diskette drive read/write errors, make sure that
the distance between the monitor and any external
diskette drive is at least 76 mm (3 in.).
• Non-Unisys monitor cables might cause unpredictable
problems.
2. Reseat the monitor cable
3. Replace the following components one at a time, in the order
shown, restarting the server each time:
a. Monitor cable
b. Video adapter (if one is installed)
c. Monitor
d. Replace the I/O-board shuttle.
1. If the wrong language is displayed, update the server firmware
with the correct language.
2. Reseat the monitor cable.
3. Replace the following components one at a time, in the order
shown, restarting the server each time:
a. Monitor
b. Replace the I/O-board shuttle.
Diagnostics
• Follow the suggested actions in the order in which they are listed in the Action column
until the problem is solved.
• See Table 5–1 to determine which components are customer replaceable units (CRU)
and which components are field replaceable units (FRU).
• If an action step is preceded by ″(Trained service technician only),″ that step must be
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