212 Solving Problems
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TEST THE DEVICE CABLE — Swap the device's cable with a cable that works
properly.
TEST THE ELECTRICAL OUTLET — Ensure that the electrical outlet is
working by testing it with another device, such as a lamp.
ELIMINATE INTERFERENCE — Relocate any electrical appliances on the
same circuit or operating near the computer that might cause interference.
Remove these other possible causes of interference:
•Power extension cables
• Keyboard and mouse extension cables
• Too many devices on a power strip
• Multiple power strips connected to the same electrical outlet
CHECK THE OPTION SETTING — See the device’s documentation for the
recommended settings. Then enter system setup and go to the Integrated
Devices option settings. Ensure that the Serial Port setting (for a serial device) or
the Parallel Port setting (for a parallel device) matches the recommended
settings.
CHECK THE SOFTWARE DOCUMENTATION — If the problem occurs with
particular software, see the software documentation for the recommended serial
or parallel port settings. Ensure that the port settings match the recommended
settings.
RUN THE Dell Diagnostics — If the tests do not complete, see "Contacting
Dell".
TEST THE DEVICE — Swap the device with a comparable device that works
properly.
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