Troubleshooting Your System 111Troubleshooting a Serial I/O DeviceProblem• Device connected to the serial port is not operating properly.Action1 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" on page 137.3 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 page 137.If the problem persists, see "Getting Help" on page 137.Troubleshooting a USB DeviceProblem• System message indicates a problem with a USB device.• Device connected to a USB port is not operating properly.Action1 Enter the System Setup program, and ensure that the USB ports are enabled. See "Using the SystemSetup Program" on page 33.2 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 page 137.5 If possible, swap the interface cable with a working cable.If the problem is resolved, replace the interface cable. See "Getting Help" on page 137.6 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 page 137.If the problem persists, see "Getting Help" on page 137.book.book Page 111 Tuesday, September 1, 2009 4:19 PM
