Envision H170L Manuel Du Propriétaire page 7

Using On Screen Display (OSD) Functions
1
Display main menu.
Exit from OSD menu.
2
Auto adjust the image when not in main menu.
Confirm the selection.
or
Select the desired item when in OSD menu.
When not in OSD menu, it is to immediately activate Contrast/
Brightness. It should be change to Contrast/ Brightness by pressing
2
button
▼ + ▲
Recall both of Contrast and Brightness.
1 + ▼
Power Lock (when not in OSD menu)
1 + ▲
OSD Lock (when not in OSD menu )
Main Menu
.
4