Canon DC-4381 - Manual (Page 22)

EN-22
On the remote control
Keystone S T button
Press the Keystone S or KeystoneT to adjust image distortion caused by tilting the projector.
Important:
Keystone adjustment will not change the shape of the menus, the start-up screen,
and the background (with no signal input).
Volume S T button
Press the Volume S to increase the volume, press the Volume T to reduce the volume.
Source button
If multiple sources are connected withto the projector simultaneously, press the
Source buttonThe projector will detect your source.
Important:
The image may not be projected or auto adjustmentsetting may not be performed
correctly for input signals other than those supported by the projector.
Mute button
The sound is temporarily cut off when the Mute button is pressed. To cancel mute,
press it again.
Blank button
The screen is temporarily cut off when the Blank button is pressed. To cancel blanking,
press the Blank button again.
4:3/16:9 button
Toggle the 4:3/16:9 button to change the aspect ratio.
Auto button
If source is a computer, press the Auto button to adjust frequency and phase.