Note: When changing from a lens with motorized Iris, zoom and focus positioning functionality, to a lens without this functionality (e.g. from a EN 63 to a EN42 lens), it is recommended to power down, and pull the AC cord. This is because the memory of the iris position will not be reset, but will show the position in LCD or OSD for the lens that was removed. When rebooting the projector, the memory will be reset.
The reverse scenario will happen when changing from a lens with no motorized positioning support, to a lens with motorized positioning support. The iris position will not be showed with a correct value. The functionality is still present, but the displayed value is not correct.