IBM eServer xSeries 135, User Reference Manual

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IBM xSeries 135: User’s Reference
The screen is blank. 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:
• The server power cord is plugged into the server and a working electrical
outlet.
• The monitor cables are connected properly.
• The monitor is turned on and the Brightness and Contrast controls are adjusted
correctly.
• The C2T breakout cable is connected properly.
• A powered-up server is selected.
Verify that:
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 program 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.
If the screen remains blank, call for service.
Only the cursor appears. Call for service.
The monitor works when you
turn on the server, but goes
blank when you start some
application programs. Verify that:
• The primary monitor cable is connected to the C2T device breakout cable.
• You installed the necessary device drivers for the applications.
If the screen remains blank, call for service.
Wavy, unreadable, rolling,
distorted screen, or screen jitter. 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.
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.
Device Suggested action
Table 15. Troubleshooting charts