DGM l-2231wd, User Manual, Page: 7 / 75

6
6.3. Factory Reset
To press MENU into main choice menus, press MENU into this choice to get back to
factory setting.
6.4. Volume
To press MENU into main choice menus, press MENU into this choice and then press UP
or DOWN to adjust volume.
Trouble shooting
No image on screen
1
、
Check the power button is switched on.
2.
、
Verify brightness and contrast setting of the monitor.
3.
、
Check TFT-LCD monitor is under non-input signal or not, if under non-input signal, the
power indicator light will flash.
4.
、
if signal indicator is note book, please make sure that the signal has been switched to
out connect screen model or not.
Non-focus image
1
、
To check the image signal cord is inserted right position or not.
Flash screen
1
、
The power is not enough, to connect the monitor to other plug.
2
、
To get rid of matter to make magnetic field around the monitor, such as radian , not
cover speaker, fluorescence light, ac transformer ,table fans etc.
3
、
Press AUTO key, auto adjust image to improve image quality .
Wrong or unusual color
1
、
If red, green, blue, anyone of color disappear, shall check the view cord is connected all
right or not .If the pin inside the plug of electric cord is loose, it will occur bad connection.
2
、
To connect the monitor to another PC to try.
The whole screen appear up and down H-rolling scan
1
、
To make sure the view of input signal is within the order(60-75Hz)of the monitor.
2
、
To connect the view cord close
How to clean the monitor
1
、
To make sure the monitor switch off.
2
、
To not spray any liquid on the screen or plastic PC directly.
When clean the screen
1
、
Please use clean, soft and no fur cloth to clean the screen.
2
、
If it is still dirty, please add a little of non-ammonia liquid and non-alcohol glass cleanser
to clean the screen
When clean the cabinet
1
、
To use soft dry cloth
2
、
To add a little of non-ammonia liquid and non-alcohol of non-abrasion cleanser to clean
surface if it is still unclean.