Hi,
The belt edge sensor is located inside the IBT assy, on the back side at the bottom of the assembly and it is a little optical sensor. But the problem become from the reflective patch who can be peeled, worn, wrinkled, or damaged and you can clean or replace it if you have some similar.
Gabi
Have you reset the NVM value? Because if the fault appears 3 times in succession the print mode will be disabled.
Hi,
In this case seems to be the IBT is so used. Don't worry, the print mode will become disabled if 3 times error appear, but resetting the NVM it will be enabled again.
No, the sensor never was broken.
Good luck!
Changing operation it should not last longer than 30 min. And the IBT life depends on what paper media you use.