Dell 4210X manual Presentation mode, Bright mode, Movie mode

5	Aspect Ratio	Press to change aspect ratio of a displayed image.
6	Page up	Press to move to previous page.
		NOTE: The USB cable must be connected if
		you want to use the Page Up feature.
7	Mute	Press to mute or un-mute the projector speaker.
8	Page down	Press to move to next page.
		NOTE: The USB cable must be connected if
		you want to use the Page Down feature.
9	Video mode	The projector has preset configurations that are
		optimized for displaying data (presentation
		slides) or video (movies, games, etc.).
		Press the Video Mode button to toggle between
		Presentation mode, Bright mode, Movie mode,
		sRGB, or Custom mode.
		Pressing the Video Mode button once will show
		the current display mode. Pressing the Video
		Mode button again will switch between modes.
10	Blank screen	Press to hide/unhide the image.
11	Up	Press to navigate through the On-Screen Display
		(OSD) Menu items.
12	Left	Press to navigate through the On-Screen Display
		(OSD) Menu items.
13	Menu	Press to activate the OSD.
14	Volume up	Press to increase the volume.
15	Laser	Point the remote control at the screen, press and
		hold the laser button to activate the laser light.
		Caution: Do not look into the laser point
		when it is on. Avoid shining the laser light
		into eyes.
16	Volume down	Press to decrease the volume.
17	Keystone adjustment	Press to adjust image distortion caused by tilting
		the projector (+40/-35 degrees).
18	Source	Press to switch between Analog RGB, Composite,
		Component (YPbPr, via VGA), HDMI, and S-
		video sources.

28

Using Your Projector