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• Scraping the surface of the reader with your nail or anything hard.
• Using or touching the reader with a dirty nger.
• The surface of your nger is very different from when you enrolled your ngerprint.
The wireless keyboard does not work
Symptom: The wireless keyboard does not work.
Action: If the Transceiver Communications LED is on and the wireless Keyboard does not work, restart your
computer. If restarting your computer does not solve the problem, verify that the following conditions are met:
• The batteries are properly installed.
• The batteries still retain their current.
• The wireless Keyboard is located less than ten meters away from the transceiver.
• The transceiver is fully installed.
Action: If the Transceiver Communications LED is not on, reconnect the transceiver and the keyboard.
Monitor problems
Note: Many monitors have status-indicator lights and built-in controls for adjusting brightness, contrast,
width, height, and other picture adjustments. However, the controls vary from monitor type to monitor type.
For information about the status lights and using the controls, refer to the documentation that comes
with your monitor.
Select your symptom from the following list:
• “Wrong characters appear on the screen” on page 97
• “The monitor works when you turn on the computer, but goes blank after some period of computer
inactivity” on page 97
• “The monitor works when you turn on the computer, but goes blank when you start some application
programs” on page 98
• “The image appears to be ickering” on page 98
• “The image is discolored” on page 98
Wrong characters appear on the screen
Symptom: Wrong characters appear on the screen.
Action: Have the computer serviced. For details, see Chapter 11 “Getting information, help, and service” on
page 109.
The monitor works when you turn on the computer, but goes blank after some period
of computer inactivity
Symptom: The monitor works when you turn on the computer, but goes blank after some period of computer
inactivity.
Action: The computer is probably set for energy savings with the power-management feature. If the
power-management feature is enabled, disabling it or changing the settings might solve the problem.
If these actions do not correct the problem, run the diagnostic programs (see “Diagnostic programs” on
page 107
for instructions). If you need technical assistance, see Chapter 11 “Getting information, help, and
service” on page 109.
Chapter 10. Troubleshooting and diagnostics 97