Lenovo Q180 Series Manuel D’Utilisation

13

User Guide

or monitor does not support this new resolution, the system will recovery to the 
original resolution within 20 seconds.

Set the refresh rate of your TV or monitor to less than 60 Hz to avoid damage to 
your TV or monitor.

If there is no image displayed on the TV or monitor after setting a new refresh 
rate, turn off your TV or monitor and wait for a moment before restarting. For TV, 
you may switch the input style to another and then switch it back to make your 
TV display normally.

Problem: Ripple on screen.

Troubleshooting and problem resolution:
1.  Check for devices located less than one meter from the computer such as 

refrigerators, electric fans, electric dryers, UPSs, 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, consult your display devices supplier.

Problem: No sound from 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 
that the sound is not muted. Adjust the volume, bass, and treble controls to 
eliminate distortion.

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

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

•  Remove and reconnect the HDMI connector, restart the computer, and set the

HDMI as the audio output mode (for example via the control panel).

  Note: IdeaCentre Q180 supports HDMI audio and video output. To learn 

more about HDMI, go to the web site at: http://www.hdmi.com/