Dell PowerEdge SC1425 - Manual (Page 29)

This section provides troubleshooting procedures for external devices attached to the system, such as the monitor, keyboard, or mouse. Before you perform
any of the procedures, see "
Troubleshooting External Connections ."
Troubleshooting External Connections
Loose or improperly connected cables are the most likely source of problems for the system, monitor, and other peripherals (such as a printer, keyboard,
mouse, or other external device). Ensure that all external cables are securely attached to the external connectors on your system. See
Figure 2 -1 and
Figure 2 -2 for the front panel and back-panel connectors on your system.
Troubleshooting the Video Subsystem
Problem
l Monitor is not working properly.
l Video memory is faulty.
Action
1. Check the system and power connections to the monitor.
2. Run the appropriate online diagnostic test. See " Using Dell Diagnostics " in "Running System Diagnostics."
If the tests run successfully, the problem is not related to video hardware. See " Finding Software Solutions ."
If the tests fail, see " Getting Help ."
Troubleshooting the Keyboard
Problem
l System message indicates a problem with the keyboard
l Keyboard is not functioning properly
Action
1. "Press each key on the keyboard, and examine the keyboard and its cable for signs of damage.
2. Swap the faulty keyboard with a working keyboard.
If the problem is resolved, replace the faulty keyboard. See " Getting Help ."
If the problem is not resolved, see " Getting Help ."
Troubleshooting the Mouse
Problem
l System message indicates a problem with the mouse.
l Mouse is not functioning properly.
Action
1. Run the appropriate online diagnostic test. See " Using Dell Diagnostics " in "Running System Diagnostics."
If the test fails, continue to the next step.