Pale print Kyocera KM-3050?

Question

Seal

Good time, colleagues!
The situation is as follows:
Kyocera KM-3050 MFP. After replacing the toner cartridge with a new (not original) print became very pale, barely readable. The toner loads without problems. I tried to change the cartridge to another, also not the original, - the situation is the same.
Question:
1. When printing, is the toner refilled at each job or after a certain level is reached?
2. How can I clean out the previously loaded toner so that the toner from another cartridge is loaded?
PS Google did not help in solving the issue.

Answer 1

1. upon reaching a certain level
2. insert an empty toner cartridge and print until it starts to swear that there is no toner, or take the device to a service