| Testing the monitor. |
- Make sure that the monitor cables are firmly connected.
- Try using a different monitor on the server, or try using the
monitor that is being tested on a different server.
- Run the diagnostic programs. If the monitor passes the diagnostic
programs, the problem might be a video device driver.
- (Trained technician only) Replace the system board.
|
| The screen is blank. |
- If the server is attached to a KVM switch, bypass the KVM switch
to eliminate it as a possible cause of the problem: connect the monitor
cable directly to the correct connector on the rear of the server.
- The IMM2 remote presence function is disabled if you install an
optional video adapter. To use the IMM2 remote presence function,
remove the optional video adapter.
- If the server installed with the graphical adapters while turning
on the server, the Lenovo logo displays on the screen after approximately
3 minutes. This is normal operation while the system loads.
- Make sure that:
- The server is turned on. If there is no power to the server, see Power problems.
- The monitor cables are connected correctly.
- The monitor is turned on and the brightness and contrast controls
are adjusted correctly.
- Make sure that the correct server is controlling the monitor,
if applicable.
- Make sure that damaged server firmware is not affecting the video;
see Updating the firmware.
- Observe the checkpoint LEDs on the system board; if the codes
are changing, go to step 6.
- Replace the following components one at a time, in the order shown,
restarting the server each time:
- Monitor
- Video adapter (if one is installed)
- (Trained technician only) System board.
- See Solving undetermined problems.
|
| The monitor works when you turn on
the server, but the screen goes blank when you start some application
programs. |
- Make sure that:
- The application program is not setting a display mode that is
higher than the capability of the monitor.
- You installed the necessary device drivers for the application.
- Run video diagnostics (see Running DSA Preboot diagnostic programs).
- If the server passes the video diagnostics, the video is good;
see Solving undetermined problems.
- (Trained technician only) If the server fails the video diagnostics,
replace the system board.
|
| The monitor has screen jitter, or
the screen image is wavy, unreadable, rolling, or distorted. |
- 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.
Note:
- 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-Lenovo monitor cables might cause unpredictable problems.
- Reseat the monitor cable.
- Replace the components listed in step 2 one at a time, in the
order shown, restarting the server each time:
- Monitor cable
- Video adapter (if one is installed)
- Monitor
- (Trained technician only) System board.
|
| Wrong characters appear on the screen. |
- If the wrong language is displayed, update the server firmware
to the latest level (see Updating the firmware) with the correct
language.
- Reseat the monitor cable.
- Replace the components listed in step 2 one at a time, in the
order shown, restarting the server each time:
- Monitor cable
- Video adapter (if one is installed)
- Monitor
- (Trained technician only) System board.
|