Dell PowerVault DP100 - Manual (Page 77)

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 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."
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.
If the problem is resolved, replace the interface cable. See Getting Help .
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 .
If the problem persists, see Getting Help .
Troubleshooting a NIC
Problem
l NIC cannot communicate with network.
Action
1. Run the appropriate online diagnostic test. See "Using Server Administrator Diagnostics" in "Running the System Diagnostics."
2. Check the appropriate indicator on the NIC connector. See NIC Indicator Codes .
l If the link indicator does not light, check all cable connections.
l If the activity indicator does not light, the network driver files might be damaged or missing.
Remove and reinstall the drivers if applicable. See the NIC's documentation.