User Guide
Page 20
...specification of graphics adapter and monitor is missing, center shift, or too small or too large in compliance which may be causing the input signal frequency mismatch. y Check the power switch. y Using OSD, adjust RESOLUTION, CLOCK, CLOCK-PHASE, H-POSITION and VPOSITION with non-standard signals. X223W TROUBLESHOOTING Before sending your LCD monitor... for a few seconds after adjusting the size of the image before changing or disconnecting the signal cable or powering OFF the monitor. (DVI Mode) Problems Current Status ...
...specification of graphics adapter and monitor is missing, center shift, or too small or too large in compliance which may be causing the input signal frequency mismatch. y Check the power switch. y Using OSD, adjust RESOLUTION, CLOCK, CLOCK-PHASE, H-POSITION and VPOSITION with non-standard signals. X223W TROUBLESHOOTING Before sending your LCD monitor... for a few seconds after adjusting the size of the image before changing or disconnecting the signal cable or powering OFF the monitor. (DVI Mode) Problems Current Status ...