Dell PowerEdge 750 - Manual (Page 33)

Checking the Equipment
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 "
External Connections ."
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. 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 connector is disabled.
If two monitors are attached to the system, disconnect one monitor. If the problem is not resolved, continue to the next step.
3. Check the system and power connections to the monitor.
4. Run the appropriate online diagnostic test. See "Using Server Administrator 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. Run the appropriate online diagnostic test. See "Using Server Administrator Diagnostics" in "Running System Diagnostics."
An error message displayed on the monitor. See "System Messages" in "Indicators, Codes, and Messages."
A series of beeps emitted by the system. See "System Beep Codes" in "Indicators, Codes, and Messages."
Alert messages from the systems management software. See the systems management software documentation.
The monitor's power indicator. See "Troubleshooting the Video Subsystem."
The keyboard indicators. See "Troubleshooting the Keyboard."
The diskette drive activity indicator. See "Troubleshooting the Diskette Drive."
The CD drive activity indicator. See "Troubleshooting a CD Drive."
The hard-drive activity indicator. See "Troubleshooting SATA Hard Drives" or "Troubleshooting SCSI Hard
Drives."
An unfamiliar constant scraping or grinding sound when you access a
drive.
See "Getting Help."