Dell PowerEdge 2650 - Manual (Page 36)

2. Observe the precautions in " Safety First—For You and Your System ."
3. Loosen the three thumbscrews that secure the cover to the chassis (see Figure 5 -3 ).
4. Slide the back cover backward and grasp the cover at both ends.
5. Carefully lift the cover away from the system.
Figure 5-3. Removing the Cover
Replacing the Cover
1. Ensure that no tools or parts are left inside the system and that any cables are routed so that they will not be damaged by the cover.
2. Align the cover with the cover alignment hooks on the sides of the chassis, and slide the cover forward (see Figure 5 -3 ).
3. Tighten the three thumbscrews that secure the cover to the chassis.
4. Replace the bezel (see " Replacing the Bezel ").
Checking the Equipment
This section provides troubleshooting procedures for external devices that connect to the system, such as the monitor, keyboard, or mouse. Before you
perform any of the procedures, see "
External Connections ."
Troubleshooting the Video Subsystem
Problem
l Monitor
l Monitor interface cable
l Video memory
l Video logic
Action
1. Determine whether the system has monitors attached to both the front and rear video connectors.
The system supports only one monitor attached to either the front or rear video connector. When a monitor is connected to the front panel, the back-
panel video, and PS/2 keyboard and mouse connectors are disabled.
If two monitors are attached to the system, disconnect one monitor. If the problem is not resolved, continue to step 2.
2. Check the system and power connections to the monitor.
3. Run the video tests in system diagnostics.
If the tests run successfully, the problem is not related to video hardware. Go to " Finding Software Solutions ."
If the tests did not run successfully, see " Getting Help " for instructions on obtaining technical assistance.
Troubleshooting the Keyboard
Problem
l System error message indicates a keyboard problem