Troubleshooting A Serial I/O Device; Troubleshooting A Usb Device - Dell PowerEdge NM176 Hardware Owner's Manual

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 127.
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 127.
If the problem persists, see "Getting Help" on page 127.

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 35.
2 Turn off the system and any USB devices.
3 Disconnect the USB devices, and connect the malfunctioning device to
the other USB connector.
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Troubleshooting Your System