When you see below situation, please follow below instructions to adjust: If the projector supports Auto Keystone or Vertical keystone, please try to turn on or manually adjust by referring to user guide. If possible, put the projector on the flat surface and make sure projector lens and screen are in a 90-degree angle.
Please refer to the video in YouTube as below link. https://www.youtube.com/watch?v=OPZ-25Q-BAk
Please refer to this FAQ: How to solve the overscan problem with my monitor?
For Models: PA/PG/PX Series “Power On” and “Power Off” are separated as two (2) different buttons on the remote control. This is different from the PJD series.
Please refer to user guide on page "Important Safety Instructions". Some projectors may be claimed to use at a limited angle dependent on the light source, such as lamp or LED.