Video problems

Use this information to diagnose and resolve video issues .

1. Make sure that:
   • Both the blade server and the monitor are turned on, and the monitor brightness and contrast controls are correctly adjusted.
   • The keyboard/video/mouse select button LED on the front of the blade server is lit, indicating that the blade server is connected to the shared BladeCenter monitor.
   • The video cable is securely connected to the BladeCenter management module. Non-IBM monitor cables might cause unpredictable problems.
   • The monitor works with another blade server.
   • Some IBM monitors have their own self-tests. If you suspect a problem with the monitor, see the information that comes with the monitor for instructions for adjusting and testing the monitor. 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. Turn on the monitor. To prevent diskette drive read/write errors, make sure that the distance between the monitor and any diskette drive is at least 76 mm (3 in.).

2. Check for correct management-module operation (see the documentation for your BladeCenter unit).
   Note

   Some BladeCenter unit types have several management-module components that might have to be tested or replaced (see the Installation Guide for your management module for more information).
3. Replace the monitor cable, if applicable.
4. Replace the monitor.
5. Replace the management module (see the documentation for your BladeCenter unit).