Dell 2950 Troubleshooting a Serial I/O Device , Troubleshooting a USB Device

Troubleshooting Your System 115
Troubleshooting a Serial I/O Device
Problem
• Device connected to the serial port is not operating properly.
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.
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" on page147.
If the problem persists, see "Getting Help" on page 147.
Troubleshooting a USB Device
Problem
• System message indicates a problem with a USB device.
• 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" on page37.
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" on page147.
5 If possible, swap the interface cable with a working cable.
If the problem is resolved, replace the interface cable. See "Getting Help" on page147.
6 Turn off the system and the USB device, and swap the device with a comparable device.
7 Turn on the system and the USB device.
If the problem is resolved, replace the USB device. See "Getting Help" on page147.
If the problem persists, see "Getting Help" on page 147.
Book.book Page 115 Friday, February 3, 2006 11:09 AM