Wide Screen Color LCD Monitor Owner's Manual

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After changing this setting, if there are still black bars, set the Display mode to
“ FULL WIDE “ by push MENU key as mentioned before .
The screen is dark
The brightness is set too low. Press MENU and adjust the BRIGHT option.
The interior of the vehicle is too hot or too cold. The monitor’s operating
temperature is -10℃ to +70℃ ( +15°F ~ +158°F ).