2E C3220B, User Manual, Page: 11 / 35

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EN
Troubleshooting
Phenomenon Troubleshooting
1. Light out/power indicator
light is off Check whether the display and the socket are well connected to power,
and whether the display is in the shutdown mode.
2. Image blurring, over-large,
over-small, etc. Enter the menu “Image Setting” and select “Auto Image Adjust” to
automatically adjust the display.
3. Image over dark
Enter the menu “Brightness and Contrast” to adjust the brightness and
contrast of the display.
4. Display over heat
Leave at least 5cm of distance for ventilation around the display and do
not place articles on the display.
5. Dark/ light spots when
powering on
This is a normal phenomenon. It is due to the backlight illuminates
unevenly at the initial phase of powering on caused by temperature
difference. The backlight can illuminates normally after 20 minutes, and
then the dark/light spots will be corrected.
6. Image distortion, blinking,
shaking Check computer setting, select the correct resolution and re-adjust the
refresh frequency.
7. Power off noise
It is a normal phenomenon caused by display discharging in the process of
powering off.
Additional information
The production date is encrypted in the serial number in the format
ERC2E *** YYYYMMDD *******
, where:
YYYYMMDD
- year, month and day of production.