Epson 7850p User Manual

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If the function key doesn’t permit you to display simultaneously 
on both screens, you should check your monitor settings to make 
sure both the LCD screen and the external monitor port are 
enabled. 

From the Control Panel, open the 

Display

 utility. In the Display 

Properties dialog box, click the 

Settings

 tab, then click 

Advanced

. The method for adjusting the settings varies by 

brand; you may need to click a 

Monitor

 tab, then make sure the 

external Monitor port is set as your primary display and/or 
enabled. See your computer’s documentation or online help for 
details. 

You may need to set up your system to display on the projector screen 
as well as the LCD screen. Follow these steps:

1. From the Apple menu, select 

System Preferences

, then select 

Displays

.

2. Make sure the 

VGA Display

 dialog box is selected.

3. Click the 

Arrange

 (or 

Arrangement

) tab.

4. Make sure the 

Mirror Displays

 checkbox is selected.

Select the 
VGA Display 
dialog box

Make sure 
Mirror Displays 
is checked