There Is A Dotted Line On The Edge Of The Screen; The Picture Won't Display In Full Screen; The Caption Function In The Projector Menu Is Deactivated; Captions Appear On The Projector Screen - Samsung SP-LFF3CLAXXZA E-Manual

There is a dotted line on the edge of the screen

Change Picture Size to
• (left directional button)
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Change the output resolution of your external device.

The picture won't display in full screen

HD channels will have black bars on either side of the screen when displaying upscaled SD (4:3) content.
Black bars are displayed at the top and bottom of the screen when watching a movie with a different aspect ratio
from the Projector screen or when using some apps.
Adjust the picture size options on your external device or set the Projector to full screen.
• (left directional button)
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The Caption function in the Projector menu is deactivated

When an external device is connected with an HDMI, the
on the external device.

Captions appear on the Projector screen

Turn off the Caption function in
• (left directional button)
Settings Caption

Auto keystone does not work properly.

When the product is tilted, project images ensuring that the Samsung logo faces the floor.
Do not project onto lights or obstacles.
Make sure the top (sensor part) of the product is not dirty with dust or foreign matter.
16:9 Standard.
Settings
Settings
Caption Settings.
Settings
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All Settings Picture
All Settings Picture
Caption function is unavailable. Adjust the caption setting
All Settings General & Privacy
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Picture Size Settings
Picture Size Settings
Accessibility
Picture Size
Picture Size
Caption