L-Series LCD Monitor User Manual
Document 800-00945 Rev A 21
09/07
Troubleshooting
Issue:
No image is displayed on screen.
Possible
Solution:
• Check that the power cord has been connected securely into the wall
outlet or grounded extension cable or surge protector.
• Power switch should be in the ON position and the LED should be lit.
• Check that the Brightness and the Contrast adjustments have not
been turned down to the minimum levels.
• Check if the monitor is in no data status mode. If it is the LCD will
appear yellow.
• When the signal is from a laptop computer check if it changes the
signal to external mode.
Issue:
’Going to Sleep’ message displayed on screen.
Possible
Solution:
• The signal cable should be fully connected to the video
card/computer.
• The video card should be completely sealed in the slot and the
computer is switched ON.
Issue:
Display image is not centered, too small or too large in PC mode.
Possible
Solution:
Push the down key on the front of the monitor or the Auto button on the
remote control.
Issue:
Vertical or Horizontal noise is present in the picture.
Possible
Solution:
• Power supply is insufficient. Connect to another power supply.
• Remove any objects that may be producing a magnetic field around
the monitor, such as a radio, amplifier without a cover, fluorescent
tube, AC switch or desk fan.
• Press Auto-Setup key to improve graphic quality.
Issue:
Faulty or Abnormal Color displayed on screen
