LG Car Video System E1940T ユーザーズマニュアル

On Screen Display(OSD) Selection and Adjustment 

Change the input image signal ratio to
original. 

Switch to full screen mode according to
input image signal.  

* This function works only if input
resolution is lower than monitor ratio
(16:9).

Exit : Exit

,    

: Move

: Restart to select sub-menu