IBM eserver xSeries 350 User Reference Manual page 126

Table 18. Troubleshooting charts.
Device and problem
Monitor
Testing the monitor.
The screen is blank.
Only the cursor appears.
The monitor works when you
turn on the server, but goes
blank when you start some
application programs.
Wavy, unreadable, rolling,
distorted screen, or screen jitter.
Wrong characters appear on
the screen.
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IBM® xSeries 350: User's Reference
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.
Verify that:
1. The server power cords are plugged into the server 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 screen remains blank, call for service.
Important: In some memory configurations, the 3-3-3 beep code might sound during
POST followed by a blank display screen. If this occurs and the Boot Fail Count
feature in the Start Options of the Configuration/Setup Utility is set to Enabled (its
default setting), you must restart the server three times to force the system BIOS to
reset the memory connector or bank of connectors from Disabled to Enabled.
Call for service.
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 screen remains blank, call for service.
If the monitor self-tests show 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.
(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 that 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 IBM
model 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.
If the wrong language is displayed, update the BIOS with the correct language.
If the problem remains, call for service.
Suggested action