Lenovo Q190 User's Guide download pdf (Page 28)

User Guide

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.

Troubleshooting audio problems

Problem: No sound from the integrated speakers.

Troubleshooting and problem resolution:

• AdjusttheWindowsvolumecontrol—selectthespeakericonfromthe

Settings Charm or click the arrow on taskbar to show the hidden icons in

Windows desktop mode, then click the speaker icon. 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 Q190 supports HDMI audio and video output. To learn

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

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 socket.

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Lenovo Q190 User's Guide Page 28