Dell R805 owner manual Troubleshooting a Serial I/O Device

Action

1Enter the System Setup program and ensure that the serial port is enabled, and the serial port/COM ports are configured appropriately for any applications you are using. See "Using the System Setup Program" on page 47.

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 Server Administrator Diagnostics" on page 161.

If the tests run successfully but the problem persists, see "Troubleshooting a Serial I/O Device" on page 142.

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.

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

4Turn on the system and the serial device.

If the problem is resolved, replace the serial device.

If the problem persists, see "Getting Help" on page 175.

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Troubleshooting Your System