32
User Guide
5.1 Troubleshooting display problems
Problem:
Blank screen or no image is displayed on the monitor
Troubleshooting and problem resolution:
1. Check that the monitor has been turned on; if not, press the power button.
2. Check to see if the monitor power cord is loose; if so, securely plug the power
cord to the monitor.
3. Check that the signal cable to the monitor is securely connected to the
connector on the computer graphics card; if not, shut down the computer then
securely connect the signal cable of the monitor.
Problem:
You need to change display property settings
Setting display background and icon properties:
1. Right-click the desktop anywhere except over an icon, then select
Personalize
from the pop-up menu.
2. From here, select the appropriate options to:
• Change the desktop background
• Select a screen saver
• Select colors and appearance options for icons and characters
• Set resolution and colors by using Display Settings options.
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 with Lenovo Service.
5.2 Troubleshooting audio problems
Problem:
When you connect the headphones to the front audio output connector,
the speakers connected to the back audio output connector are silenced.
Troubleshooting and problem resolution:
The front audio output connector is provided for convenience and has a priority
higher than the back audio output connector. If a speaker or headphones are
connected to the front audio output connector, sound is delivered through those
devices and any devices connected to the rear connector become silenced.
31032754_IdeaCentre K UG_EN.indd 32
2007.11.30 5:56:56 PM
