The older PG projectors will display this message every 100 hours of use; it doesn't necessarily mean that it has detected a dirty filter, but it doesn't hurt to check.

Cleaning the Filter

Most projectors have a slot for a sponge-type filter.  Simply remove the filter, blow-out the dust, and re-install.

To turn the message off …

  • Use the projector remote and press the 'menu' button.
  • On the far right of the options showing on the projection, select 'reset'.
  • Clear filter hours is the last option. Select that and confirm the reset.
  • Use the 'exit' button to move backwards through / quit the menus.