Acer B247YC Lifecycle Extension Guide - Page 15

ACER B247Y 15 TROUBLESHOOTING 5. Troubleshooting Before sending your LCD monitor for servicing, please check the trouble-shooting list below to see if you can self-diagnose the problem. (VGA Mode) Problems Current Status Remedy LED ON  Using OSD, adjust brightness and contrast to maximum or reset to their default settings. No Picture LED OFF  Check the power switch.  Check if AC power cord is properly connected to the monitor.  Check if video signal cable is properly connected LED displays amber at the back of monitor. color  Check if the power of computer system is ON. Unstable Picture  Check if the specification of graphics adapter and monitor is in compliance which may be causing the input signal frequency mismatch. Abnormal Picture  Using OSD, adjust RESOLUTION, CLOCK, CLOCK-PHASE, H-POSITION and V-POSITION with non-standard signals. Display is missing, center shift, or too small or too large in display size  Using OSD, in case of missing full-screen image, please select other resolution or other vertical refresh timing.  Using OSD, in case of missing full-screen image, please select other resolution or other vertical refresh timing.  Wait for a few seconds after adjusting the size of the image before changing or disconnecting the signal cable or powering OFF the monitor. Abnormal Sound (Only Audio-Input model) (Optional) No sound, or sound level is too low  Check the audio cable with the host PC is connected.  Check if the volume setup of the host PC is in minimum position and try to raise the volume level.