Asus MK221H User Manual - Page 22

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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

Webcam or array microphone is not working

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 2–3 seconds to

automatically adjust the image (VGA input only).

• Adjust the H-Position or V-Position settings via

OSD (VGA input only).

• Make sure the signal cable is properly

connected to the monitor and the computer.

• Move away electrical devices that may cause

electrical interference.

• Inspect the signal cable and make sure that

none of the pins are bent.

• Perform All Reset via OSD.

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

Color Temperature via OSD.

• Press the

button for 2–3 seconds to

automatically adjust the image (VGA input only).

• Adjust the Phase and Clock settings via OSD

(VGA input only).

• Ensure that thse 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.

• Make sure that you have connected the USB

2.0 cable securely to both the LCD monitor and

your computer.

• Make sure that you use the Microsoft

Vista / XP Service Pack 2 operating systems.

ASUS MK221 Series LCD Monitor

Windows