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Troubleshooting Your System 107
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. 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 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 page 31.
2
Turn off the system and any USB devices.
3
Disconnect the USB devices, and connect the malfunctioning device to
the other USB connector.
book.book Page 107 Wednesday, April 15, 2009 8:47 PM