Ask:

The machine displays no cartridge after loading the toner cartridge?

Answer:

This error, it may be that the chip is not in contact, it is recommended that the customer first check the chip contact problem, check the printer probe for deformation.
The scratch test method can be used to confirm the chip contact problem: the customer can apply a layer of color on the chip contact with an aqueous pen, and then install it on the printer, and observe whether the chip is in good contact with the printer by observing the scratch on the chip.