3.3Troubleshooting (FAQ)
Problem
Power LED is not ON
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.
The power LED lights amber and there is no screen image
•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.
Screen image is too light or dark
•Adjust the Contrast and Brightness settings via OSD.
Screen image is not centered or sized properly
• Press the button for
•Adjust the
Screen image bounces or a wave pattern is present in the image
•Make sure the signal cable is properly connected to the monitor and the computer.
•Move away electrical devices that may cause electrical interference.
Screen image has color defects (white does not | • | Inspect the signal cable and make sure that | |
look white) |
| 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. | |
Screen image is blurry or fuzzy | • | Press the | button for |
|
| automatically adjust the image (VGA input only). | |
| • Adjust the Phase and Clock settings via OSD | ||
|
| (VGA input only). | |
No sound or sound is low
•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.
Webcam or array microphone is not working
•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® Windows® Vista / XP Service Pack 2 operating systems.
14 | ASUS MK221 Series LCD Monitor |