Code 5231: “lens focus position - requested target not reached” (Warning)

Situation

Solution

Manual lens installed.

Replace the manual lens with a motorized lens.

Lens not correctly installed.

Check that the lens is correctly installed. See service manual chapter "Lens installation".

The activated lens file does not correspond with the lens mounted on the projector.

Activate a lens file which does correspond with the mounted lens or mount an other lens which correspond with the lens file you want to activate.

Corrupt lens file.

Delete the lens file and program correct lens type into communicator under Advanced/lens parameters and recreate a new lens file.

Tip: perform a “Lens Homing” before creating a new lens file. Otherwise, if the lens is removed the existing lens file becomes useless. Setup all new lens files away from the maximum limitation of the lens zoom. It is possible that the lens file was originally created at the maximum or minimum zoom capabilities of the lens zoom.

The final lens position lays very close to the mechanical limits which disable the motorized lens position.

Position the lens manually, or reposition the projector so that the lens position lays further away from the mechanical limits, or try to use another lens which range is more suitable.

Tip: Setup all new lens files away from the maximum limitation of the lens zoom. It is possible that lens file was originally created at the maximum or minimum zoom capabilities of the lens zoom. Program correct lens type into communicator under Advanced/lens parameters and recreate the lens files.

Disconnected wire of the zoom and focus motors of the motorized lens.

Remove the Lens Holder cover of the projector and check if the orange wire at the left side of the Lens Holder is connected (reference 5 image)

Disconnected wire, of the lens motors, from the Signal Backplane.

Remove the large dust filter from the projector and check if the wire (reference 3 image) is inserted in the Signal Backplane.

Broken or damaged electrical socket of the Lens Holder.

Check if the electrical socket (reference 1 image) on the Lens Holder front plate is not damaged. If damaged replace the socket. See service manual chapter "Lens Holder".

Malfunction Cinema Control board.

Replace the Cinema Control board. See service procedure "Replacement of the Cinema Controller".

Malfunction zoom motor of the lens.

Use the local keypad to zoom the image on the screen. If unsuccessful, replace the motorized lens or replace the motor assembly of the lens. See service procedure "Replacement of the motor assembly".

Malfunction Signal Backplane (bad connection).

Replace the Signal Backplane. See service procedure "Signal Backplane replacement process".