Fingerprint Reader Problems - Lenovo ThinkPad T430 User Manual

• Problem: A volume or balance slider cannot be moved.
Solution: The slider might be grayed out. This means that its position is fixed by the hardware and
cannot be changed.
• Problem: The volume sliders do not stay in place when some audio applications are used.
Solution: It is normal for the sliders to change position when certain sound applications are used. The
applications are aware of the settings in the Volume Mixer window and are allowed to change the settings
themselves. An example is the Windows Media Player. Usually the application has sliders available
to control the sound from within the application.
• Problem: The balance slider cannot completely mute one channel.
Solution: The control is designed to compensate for minor differences in balance and does not
completely mute either channel.
• Problem: There is no volume control for MIDI sound in the Volume Mixer window.
Solution: Use the hardware volume control. This is because the built-in synthesizer software does
not support the control.
• Problem: The sound cannot be turned off completely even if you set the Volume Mixer at minimum.
Solution: You still can hear some sound even though you have set the Volume Mixer at minimum. To turn
off the sound completely, go to the Volume Mixer by clicking the speaker icon on the takbar, then click
Mixer. Click the Mute Speaker icon..

Fingerprint reader problems

Problem: The surface of the reader is dirty, stained, or wet.
Solution: Gently clean the surface of the reader with a dry, soft, lint-free cloth.
Problem: The reader often fails to enroll or authenticate your fingerprint.
Solution: If the surface of the reader is dirty, stained, or wet, gently clean the surface of the reader with a
dry, soft, lint-free cloth.
If your finger has any of the following conditions, you might not be able to register or authenticate it:
• Your finger is wrinkled.
• Your finger is rough, dry, or injured.
• Your finger is very dry.
• Your finger is stained with dirt, mud, or oil.
• The surface of your finger is very different from when you enrolled your fingerprint.
• Your finger is wet.
• A finger that has not been enrolled is used.
To improve the situation, try the following:
• Clean or wipe your hands to remove any excess dirt or moisture from the fingers.
• Enroll and use a different finger for authentication.
• If your hands are too dry, apply lotion to them.
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Chapter 10 Troubleshooting computer problems
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