Dell PowerEdge 1650 - Manual (Page 29)

1. Look at the keyboard and the keyboard cable for any signs of damage.
2. Press and release each key on the keyboard.
If the keyboard and its cable appear to be free of physical damage, and the keys work, go to step 4.
If the keyboard or its cable are damaged, continue to step 3.
3. Swap the faulty keyboard with a working keyboard.
If the problem is resolved, the keyboard must be replaced. See " Getting Help " for instructions on obtaining technical assistance.
4. Run the keyboard test in the system diagnostics.
If you can use the keyboard to select the keyboard test, go to step 6.
If you cannot use the keyboard to select the keyboard test, continue to step 5.
5. Swap the faulty keyboard with a working keyboard.
6. Did the keyboard test run successfully?
If the problem is resolved, the faulty keyboard must be replaced.
If the problem is not resolved, the keyboard controller on the system board is faulty. See " Getting Help " for instructions on obtaining technical
assistance.
Troubleshooting the Basic I/O Functions
Problem
l System error message indicates an I/O port problem
l Device connected to the port does not function properly
Action
1. Enter the System Setup program (see "Using the System Setup Program" in the User's Guide for instructions) and check the port setting.
If the communications port is disabled, go to step 3.
If the communications port is enabled, continue to step 2.
2. Change the port setting to Auto, and then reboot the system.
3. Check the port setting in the System Setup program. See "Using the System Setup Program" in the User's Guide for instructions.
If the settings are correct, go to step 5.
4. Change the necessary setting in the System Setup program. If the port problem is confined to a particular application program, see the application
program's documentation for specific port configuration requirements.
5. Reboot the system from the diagnostics diskette, and run the port test in the system diagnostics.
If the test did not run successfully, see " Getting Help " for instructions on obtaining technical assistance.
If the test runs successfully but the problem persists, see " Troubleshooting a Serial I/O Device " or " Troubleshooting a USB Device ," depending on the
malfunctioning device.
Troubleshooting a Serial I/O Device
Problem
l Device connected to the serial port not working
Action
1. Turn off the system and any peripheral devices connected to the serial port.
2. Swap the interface cable with a known working cable.
If the problem is resolved, the interface cable must be replaced. See " Getting Help " for instructions on obtaining technical assistance.
3. Turn off power to the system and the serial device, and swap the device with a comparable device.
4. Turn on the system and the serial device.
If the problem is resolved, the serial device must be replaced.
If the problem is not resolved, see " Getting Help " for instructions on obtaining technical assistance.
Troubleshooting a USB Device
Problem