Dell OptiPlex GX50 User Manual page 170

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So lv ing Pr o ble m s
• Test the electrical outlet. Verify that the device is connected to a
working electrical outlet.
• Verify that the device is turned on.
• Check for interference: electrical appliances on the same circuit or
operating in close proximity to the computer can cause interference.
If the problem still exists after you complete the basic checks, fill out the
Diagnostics Checklist as you perform the following steps:
Enter system setup
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Then exit system setup properly to save the information, and reboot
the computer.
For a serial device, check the Serial Port options; for a parallel device,
check the Parallel Port options. See the device's documentation for
additional information on port settings and configuration
requirements.
Is the device working properly?
Yes. The problem is resolved.
No. Go to step 2.
Run the Serial Ports device group and/or the Parallel Ports device
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group in the Dell Diagnostics.
These device groups check the basic functions of the system board's
I/O port logic. If a printer is connected to the parallel port, the Parallel
Ports device group tests the communication link between the system
board's I/O port logic and the printer.
Do the tests complete successfully?
Yes. Go to step 3.
No. Contact Dell for technical assistance.
If the problem is confined to a particular application program, see the
3
application program's documentation for specific port configuration
requirements.
Is the device working properly?
Yes. The problem is resolved.
No. Go to step 4.
Turn off the computer and the device, swap the device's cable with a
4
known working cable, and then turn on the computer and the device.
and check the Integrated Devices option settings.