Dell 840 manual Troubleshooting Serial I/O Problems, Troubleshooting a Serial I/O Device

2Examine the mouse and its cable for signs of damage. If the mouse is not damaged, go to step 4.

If the mouse is damaged, continue to the next step.

3Swap the faulty mouse with a working mouse.

If the problem is resolved, replace the faulty mouse. See "Getting Help" on page 121.

4Enter the System Setup program and ensure that the mouse controller is enabled. See "Using the System Setup Program."

If the problem is not resolved, see "Getting Help" on page 121.

Troubleshooting Serial I/O Problems

Problem

•Error message indicates a problem with a serial port.

•Device connected to a serial port is not operating properly.

Action

1Enter the System Setup program and ensure that the serial port is enabled and configured correctly for your application. See "Using the System Setup Program" on page 29.

2If the problem is confined to a particular application, see the application documentation for specific port configuration requirements that the program may require.

3Run the appropriate online diagnostic test. See "Using Dell PowerEdge Diagnostics" on page 111.

If the tests run successfully but the problem persists, see "Troubleshooting a Serial I/O Device" on page 94.

Troubleshooting a Serial I/O Device

Problem

•Device connected to the serial port is not operating properly.

Action

1Turn off the system and any peripheral devices connected to the serial port.

2Swap 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 121.

3Turn off the system and the serial device, and swap the device with a comparable device.

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Troubleshooting Your System