Lenovo ThinkPad A285, Руководство пользователя, Страница: 98 / 152

Solution : Do the following:
1. Exit the program that uses the sound device (for example, Windows Media Player).
2. Go to Control Panel, and ensure that you view Control Panel by Category.
3. Click Hardware and Sound ➙ Sound ➙ Playback .
4. If you are using a Headset profile, select Bluetooth Hands-free Audio and click Set Default . If you are
using an AV profile, select Stereo Audio and click Set Default .
5. Click OK to close the Sound window.
ThinkPad pointing device problems
• Problem : The pointer drifts when the computer is turned on or after it resumes normal operation.
Solution : The pointer might drift when you are not using the TrackPoint pointing device during normal
operation. This is a normal characteristic of the TrackPoint pointing device and is not a defect. Pointer
drifting might occur for several seconds under the following conditions:
– When the computer is turned on
– When the computer resumes normal operation
– When the TrackPoint pointing device is kept pressed for a long time
– When the temperature changes
• Problem : The TrackPoint pointing device or trackpad does not work.
Solution : Ensure that the TrackPoint pointing device or trackpad is enabled in the Mouse Properties
window. For more information, see “Customizing the ThinkPad pointing device” on page 23.
Keyboard problems
• Problem : All or some keys on the keyboard do not work.
Solution : If an external numeric keypad is connected:
1. Turn off the computer.
2. Remove the external numeric keypad.
3. Turn on the computer and try using the keyboard again.
If the keyboard problem is resolved, carefully reconnect the external numeric keypad.
If the problem persists, ensure that the correct device driver is installed by doing the following:
1. Go to Control Panel, and then change the view of Control Panel from Category to Large icons or
Small icons.
2. Click Keyboard .
3. Click the Hardware tab. In the Device Properties section, ensure that you see this message:
Device
status: This device is working properly.
If keys on the keyboard still do not work, have the computer serviced.
• Problem : All or some keys on the external numeric keypad do not work.
Solution : Ensure that the external numeric keypad is correctly connected to the computer.
• Problem : The keys on the top row of the numeric keypad might not function the same as the icon printed
on each key.
Solution : Do the following:
1. Go to Control Panel, and then change the view of Control Panel from Category to Large icons or
Small icons.
2. Click Keyboard . In the Keyboard Properties window, click the Fn and function keys tab.
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A285 User Guide