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zwalkerAug 16, 2025
What to do if Acer A1P1901 Projector image is too small or too large?
- AAnthony SilvaAug 17, 2025
To adjust the image size, move the Acer projector either closer to or further away from the screen.

What to do if Acer A1P1901 Projector image is too small or too large?
To adjust the image size, move the Acer projector either closer to or further away from the screen.
How to fix Acer A1P1901 Projector when no image appears on screen?
First, ensure all cables are correctly connected as shown in the "Getting Started" section, and that no connector pins are bent or broken. Then, make sure the Acer projector is switched on.
What to do if Acer Projector image is unstable or flickering?
Try changing the display color setting on your computer.
How to resolve partial or incorrectly displayed image on Acer A1P1901 Projector (PC)?
Open "My Computer > Control Panel," and double-click the "Display" icon. Go to the "Settings" tab. Make sure your display resolution is lower than or equal to 1600 x 1200 or 1920 x 1080. Click the "Advanced Properties" button. If the problem persists, change the monitor display: Ensure the resolution is lower than or equal to 1600 x 1200 or 1920 x 1080. Click "Change" under the "Monitor" tab, then "Show all devices > Standard monitor types", and choose the desired resolution under "Models". Verify the monitor display's resolution is lower than or equal to 1600 x 1200 or 1920 x 1080.
Why is Acer Projector notebook screen not displaying presentation?
If you're using a Microsoft® Windows® based notebook, some PCs may deactivate their screens when a second display is used. Refer to your computer's manual for reactivation instructions. If using an Apple® Mac® OS based notebook, go to System Preferences, open Display, and turn Video Mirroring "On."
How to fix vertical flickering bar on Acer A1P1901 Projector image?
Check and reconfigure the display mode of your graphics card to ensure it is compatible with the Acer projector.
What to do if Acer Projector image is out of focus?
Press the (Auto Focus) button to adjust the focus. Also, ensure the projection screen is within the required distance. For more details, consult the "How to Get a Preferred Image Size by Adjusting Distance and Zoom" section.
How to correct slanted sides on Acer Projector image?
If possible, reposition the Acer projector so it's centered on the screen and below the screen's bottom edge. Then, access the OSD menu by selecting "Setting" from the home screen. Navigate to "Advanced Setting" > "Keystone" to make necessary adjustments.
Why is Acer A1P1901 image stretched when displaying a widescreen DVD?
When playing a DVD encoded in anamorphic or 16:9 aspect ratio, adjustments may be needed. If playing a 4:3 format DVD, change the format to 4:3 using the projector's OSD. If the image remains stretched, adjust the aspect ratio and set the display format to 16:9 (wide) on your DVD player.
How to fix reversed image on Acer Projector?
To correct a reversed image, select "Setting" from the home screen to open the OSD menu. Then, go to "Advanced Setting" > "Projection Location" to adjust the projection direction.
| Category | Projector |
|---|---|
| Display Technology | DLP |
| Input Connectors | HDMI, VGA, Composite Video, Audio In |
| Native Resolution | 1920 x 1080 |
| Projection Size | 30" - 300" |
| Output Connectors | Audio Out |
| Weight | 5.5 lbs |
| Dimensions | 313 x 240 x 113 mm |
Procedures for powering on the projector and checking indicator lights.
Table and guide for achieving desired image size by adjusting projector distance and zoom.
How to access, navigate, and adjust settings within the projector's OSD menus.
Guide to resolving common image display problems and projector malfunctions.