Lenovo 20J1, User Manual

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Solution : To switch from one device to another (for example, from a speaker to a headphone, or from an
external microphone to a built-in microphone), do the following:
1. Go to Control Panel, and ensure that you view Control Panel by Category.
2. Click Hardware and Sound .
3. Click the SmartAudio icon.
4. Ensure that the computer is in MULTI-STREAM mode in the Device advanced settings window.
5. In the Volume Mixer window, select the device you want, for example, speakers.
6. Play any sound through a music program (for example, Windows Media Player). Ensure that sound
comes from the speakers now.
7. Then, if you would like to switch to a headphone, close the music program.
8. Go to the Volume Mixer window. Then select another device (for example, the headphone).
9. Play any sound through the music program. Ensure that sound comes from the headphone attached
directly to the system. For more information, see the help information system of the SmartAudio
program.
Note: The Volume Mixer window of SmartAudio displays all audio devices detected in the system,
such as speakers for a playback device, or a built-in microphone for a recording device. A check
mark beside the audio device shows that the device has been selected.
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.
For tips on how to maintain the fingerprint reader, see “Using the fingerprint reader” on page 46.
Battery problems
• Problem : The battery cannot be fully charged in the standard charge time when the computer is powered
off.
Solution : The battery might be over-discharged. Do the following:
1. Turn off the computer.
2. Ensure that the over-discharged battery is in the computer.
3. Connect the ac power adapter to the computer and let it charge.
If a quick charger is available, use it to charge the over-discharged battery.
If the battery cannot be fully charged in 24 hours, use a new battery.
• Problem : The computer shuts down before the battery status icon shows that the battery is empty.
Solution : Discharge and recharge the battery.
• Problem : The computer operates after the battery status icon shows that the battery is empty.
Solution : Discharge and recharge the battery.
• Problem : The operating time for a fully charged battery is short.
Solution : Discharge and recharge the battery. If your battery operating time is still short, use a new
battery.
• Problem : The computer does not operate with a fully charged battery.
Chapter 7
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Troubleshooting computer problems
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