Lenovo System x3100 M4 Installation And Service Manual page 135

Table 22. Monitor and video's symptoms and actions (continued)
• Follow the suggested actions in the order in which they are listed in the Action column until the problem is
solved.
• If an action step is preceded by "(Trained technician only)", that step must be performed only by a trained
technician.
• Go to the IBM support website at
tips, and new device drivers or to submit a request for information.
Symptom
The monitor has screen jitter,
or the screen image is wavy,
unreadable, rolling, or
distorted.
Wrong characters appear on
the screen.
http://www.lenovo.com/support
Action
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, fluorescents, 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:
a. 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.).
b. Non-IBM monitor cables might cause unpredictable problems.
2. Reseat the monitor and cable.
3. Replace the following components one at a time, in the order shown, restarting
the server each time:
a. Monitor
b. (Trained technician only) System board
1. If the wrong language is displayed, update the server firmware to the latest level
(see "Updating the firmware" on page
2. Reseat the monitor and cable.
3. Replace the following components one at a time, in the order shown, restarting
the server each time:
a. Monitor
b. (Trained technician only) System board
to check for technical information, hints,
77) with the correct language.
.
Chapter 4 Troubleshooting
121