How to correct a reversed image on Acer A1P2104 Projector?
- AAmy KingSep 23, 2025
To correct a reversed image on your Acer Projector: select "Image" > "Projection Mode", "Image" > "Projection Location" on the OSD and adjust the projection direction.

How to correct a reversed image on Acer A1P2104 Projector?
To correct a reversed image on your Acer Projector: select "Image" > "Projection Mode", "Image" > "Projection Location" on the OSD and adjust the projection direction.
How to fix Acer Projector when no image appears on screen?
If no image appears on the screen when using your Acer Projector, ensure all cables are correctly connected as described in the "Getting Started" section. Also, check that none of the connector pins are bent or broken, and make sure the projector is switched on.
How to adjust the image size on Acer A1P2104 Projector?
To adjust the image size on your Acer Projector: adjust the zoom lever on the top of the projector; move the projector closer to or further from the screen; press "MENU" on the control panel or remote control, go to "Image" > "Aspect Ratio" and try different settings.
Why Acer Projector is not displaying presentation from notebook?
If your notebook computer's screen is not displaying your presentation when using an Acer Projector: if you are using a Microsoft® Windows® based notebook, some notebook PCs may deactivate their own screens when a second display device is in use, refer to your computer's manual for detailed information on how to reactivate it. If you are using an Apple® Mac® OS based notebook, in System Preferences, open Display and select Video Mirroring "On."
Why the screen of the notebook computer is not displaying my presentation on Acer A1P2104?
If your notebook computer's screen isn't displaying your presentation on the Acer Projector: * If you are using a Microsoft® Windows® based notebook: Some notebook PCs may deactivate their own screens when a second display device is in use. Each has a different way to be reactivated. * If you are using an Apple® Mac® OS based notebook: In System Preferences, open Display and select Video Mirroring 'On.'
Why is Acer A1P2104 Projector image stretched when playing widescreen DVD?
If the image is stretched when displaying a "widescreen" DVD title on your Acer Projector, when you play a DVD encoded in anamorphic or 16:9 aspect ratio you may need to adjust the following settings: if you play a 4:3 format DVD title, please change the format to 4:3 with the projector OSD; if the image is still stretched, you will also need to adjust the aspect ratio, set up the display format to 16:9 (wide) aspect ratio on your DVD player.
How to stabilize flickering image on Acer A1P2104?
To stabilize an unstable or flickering image on your Acer Projector: use "Tracking" to correct it; change the display color setting on your computer.
How to remove vertical flickering bar on Acer Projector image?
To remove a vertical flickering bar on your Acer Projector image: use "Frequency" to make an adjustment; check and reconfigure the display mode of your graphics card to make it compatible with the projector.
What to do if Acer Projector stops responding to all controls?
If your Acer Projector stops responding to controls: * If possible, turn off the projector, then unplug the power cord and wait at least 30 seconds before reconnecting power. * Make sure that the control panel lock function is disabled.
What to do if Acer Projector stops responding to controls?
If your Acer Projector stops responding to all controls: turn off the projector, then unplug the power cord and wait at least 30 seconds before reconnecting power; make sure that the control panel lock function is disabled.
Guidance on safe and proper use of electrical power for the projector.
Instructions on when and how to get the product serviced.
Detailed explanation of the projector's control panel buttons.
Diagram and description of the remote control buttons.
Illustrates how to connect various input sources and output devices.
Step-by-step guide on how to power on the projector.
Instructions for safely powering off the projector, including instant resume.
Reducing input lag for gaming and setting up projector security.
Setting user/administrator passwords, timeout, and factory reset.
Solutions for no image, scrolling, or incorrectly displayed images.
Solutions for projector unresponsiveness or lamp issues.
Step-by-step instructions for installing the projector using a ceiling mount.
Specifications for projection system, compatibility, colors, zoom, and weight.
Loading...