Quote Originally Posted by cristachecri View Post
Toner level (ratio) in the developer unit is controlled by an ATDC sensor. Toner level in the sub-hopper is controlled by a magnetic switch.

Thank you once again for your answers and I have a conclusion.This equipment graphically displays the toner remaining after the number of pages you have printed and how much the toner puts on the sheet.Why then when I put a new toner this level does not go in 100% ???According to the technical documentation this is done by the hooper sensor.I replaced an original toner on the magenta when the display shows 25% more and it remained at the same percentage, instead of 100%.Why technical documentation does not explain this very clearly ???
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You have to wait until the machine tells you to replace the toner. Otherwise it has no way of knowing the bottle is full.