one
Press and hold the hatch key on the left side of the printer to open the toner cartridge case.
two
Remove the toner cartridge, open the screw in the upper right corner of the toner cartridge with a screwdriver, remove the exhausted chip and insert a new chip.
three
Put the replaced chip cartridge into the printer compartment and close the cover.
four
At this point, the printer status light turns green and the screen shows that it is warming up.
five
When the screen shows: Ready to copy 100%. At this time, the chip has been replaced and the printing and copying functions have been resumed. It is ready for normal office use.
Can't change it. Only new ones.