Maintenance and Troubleshooting
FHD552-X LCD Panel Service Manual
14
020-000757-01 Rev. 1 (09-2014)
Image is too bright and/
or lacks definition in the
bright areas of the
image.
• Contrast is set too high.
• Decrease the contrast setting.
Image appears “washed
out” and/or dark areas
appear too bright.
• Brightness is set too high.
• Decrease the brightness setting.
Image is too dark.
• Brightness and/or Backlight are set too
low.
• Increase the brightness and/or backlight
settings.
Images from an HDMI
source do not display.
• The resolution and frequency of the
video card in the computer are not
compatible with the display.
• HDMI cable from source to display is
either defective or too long.
• Select a compatible resolution and
vertical frequency.
• Try a known-good and/or shorter HDMI
cable.
Computer images do not
display correctly.
• The resolution and frequency of the
video card in the computer are not
compatible with the display.
• Clock and Phase settings need
adjustment.
• Select a compatible resolution and
vertical frequency.
• Adjust Clock and Phase settings.
Symptom
Possible Cause(s)
Solution
