Asus LS221 Series User Manual - Page 20

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3.3

Troubleshooting (FAQ)

Power LED is not ON

The power LED lights amber and there is no

screen image

Screen image is too light or dark

Screen image is not centered or sized

properly

Screen image bounces or a wave pattern is

present in the image

Screen image has color defects (white does

not look white)

Screen image is blurry or fuzzy

No sound or sound is low

3-6

Problem

Possible Solution

• Press the

button to check if the monitor

is in the ON mode.

• Check if the power cord is properly

connected to the monitor and the power

outlet.

• Check if the monitor and the computer are

in the ON mode.

• Make sure the signal cable is properly

connected the monitor and the computer.

• Inspect the signal cable and make sure

none of the pins are bent.

• Connect the computer with another

available monitor to check if the computer

is properly working.

• Adjust the Contrast and Brightness settings

via OSD.

• Press the

button for two seconds to

automatically adjust the image.

• Adjust the H-Position or V-Position settings

via OSD.

• Make sure the signal cable is properly

connected to the monitor and the computer.

• Move electrical devices that may cause

electrical interference.

• Inspect the signal cable and make sure that

none of the pins are bent.

• Perform Reset via OSD.

• Adjust the R/G/B color settings or select the

Color Temperature via OSD.

• Press the

button for two seconds to

automatically adjust the image (for VGA

mode only).

• Adjust the Phase and Clock settings via

OSD.

• Ensure that the audio cable is properly

connected to the monitor and the computer

• Adjust the volume settings of both your

monitor and computer.

• Ensure that the computer sound card driver

is properly installed and activated.

Chapter 3: General Instruction