Dell PowerEdge SC1420 - Manual (Page 31)

Action
1. Turn off the system and any peripheral devices connected to the serial port.
2. Swap the serial interface cable with a working cable, and turn on the system and the serial device.
If the problem is resolved, replace the interface cable. See " Getting Help ."
3. Turn off 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, replace the serial device. See " Getting Help ."
If the problem persists, see " Getting Help ."
Troubleshooting a Parallel Printer
Problem
l Device connected to the parallel port is not operating properly.
Action
1. Turn off the system and any peripheral devices connected to the parallel port.
2. Swap the printer interface cable with a working cable, and turn on the system and the printer.
If the problem is resolved, replace the interface cable. See " Getting Help ."
3. Turn off the system and the printer, and swap the printer with a comparable printer.
4. Turn on the system and the printer.
If the problem is resolved, replace the printer. See " Getting Help ."
If the problem persists, see " Getting Help ."
Troubleshooting a USB Device
Problem
l System message indicates a problem with a USB device.
l Device connected to a USB port is not operating properly.
Action
1. Enter the System Setup program, and ensure that the USB ports are enabled. See "Using the System Setup Program" in your User's Guide.
2. Turn off the system and any USB devices.
3. Disconnect the USB devices, and connect the malfunctioning device to the other USB connector.
4. Turn on the system and the reconnected device.
If the problem is resolved, the USB connector might be defective. See " Getting Help ."
5. If possible, swap the interface cable with a working cable.