Справочник Пользователя для Lenovo 3109

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User Guide

Problem: Ripple on screen.

Troubleshooting and problem resolution:
1.  Check to see if any of the following devices are located less than one meter 

from the computer: refrigerators, electric fans, electric dryers, UPS systems, 
regulators, fluorescent lamps or other computers that may be generating 
magnetic interference.

2.  Move any interfering devices away from the computer.
3.  If the problem persists, contact Lenovo Service.

Problem: No sound from the integrated speakers.

Troubleshooting and problem resolution:
•  Adjust the Windows volume control — double-click the speaker icon in the

lower-right corner of your screen. Ensure that the volume is turned up and the 
sound is not muted. Adjust the volume, bass, or treble controls to eliminate 
distortion.

•  Reinstall the audio driver.
•  Disconnect any headphones from the headphone connector — sound from

the speakers is automatically disabled when headphones are connected to the 
computer’s side-panel headphone connector.

Problem: No sound from headphones.

Troubleshooting and problem resolution:
•  Check the headphone cable connection — ensure that the headphone cable is

securely inserted into the headphone connector.

•  Adjust the Windows volume control — click or double-click the speaker icon in

the lower-right corner of your screen. Ensure that the volume is turned up and 
the sound is not muted.

Problem: You are unable exit a running program normally.

Troubleshooting and problem resolution:
1.  Open the Task Manager window by pressing Ctrl, Alt and Delete at the same 

time.

2.  Select the Application tab, select the problem program, then click the End 

Task button.