Dell PowerEdge 1500SC - Manual (Page 23)

If the system setup is correct, go to step 5.
4. Change the necessary statements in the system setup. 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 serial ports test and/or the parallel ports test in system diagnostics.
If the tests did not run successfully, see " Getting Help ," for instructions on obtaining technical assistance.
6. If the problem persists, see one of the following procedures, " Troubleshooting a Parallel Printer " or " Troubleshooting a Serial I/O Device ," depending on
the malfunctioning device.
Troubleshooting a Serial I/O Device
Problem
l Device connected to the serial port is 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 the system and the serial device, and swap the device with a comparable device.
4. Turn on the power to 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 Parallel Printer
Problem
l Parallel printer is not working
Action
1. Turn off the power from the printer and the system.
2. Swap the parallel printer interface cable with a known working cable.
3. Turn on the power to the printer and the system.
4. Attempt a print operation.
If the print operation is successful, the interface cable must be replaced. See " Getting Help ," for instructions on obtaining technical assistance.
5. Run the printer's self-test.
If the self-test is not successful, the printer is probably defective. See " Getting Help ," for instructions on obtaining technical assistance.
Troubleshooting a USB Device
Problem
l A system error message indicates a problem
l Device connected to the port is not working
Action
1. Enter the System Setup program, and check that the USB ports are enabled. See "Using the System Setup Program" in the User's Guide for instructions.
2. Turn off the system and any USB devices.
If there is only one USB device connected to the system, go to step 5.
3. Disconnect the USB devices, and connect the malfunctioning device to the other port.
4. Apply power to the system and the reconnected device.
If the problem is resolved, the USB port might be defective. See " Getting Help ," for instructions on obtaining technical assistance.
5. If possible, 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.
6. Turn off the system and the USB device, and swap the device with a comparable device.
7. Turn on the power to the system and the USB device.