Remove the two metal pins on the sides of the cartridge, the simplest way is to cut two small slots in the plastic next to them all.
Hp laserjet pro m501dn mono laser printer compatible cartridges from China have the possibility of being subtly different.
The pins for the two sides are the same that separate both halves.
The hp laserjet pro m501dn mono laser printer toner part and the drum part push the drum shaft pin away from the inside of the cartridge wall and remove it, push the shaft far enough to hold it with the wire cutters of the top speed cutter, the center of the drum on the opposite side is welded, do not remove it.
The drum dongle gear has a spring. It leaves the spring radical out of the gear. Remove the drum, remove the hp laserjet pro m501dn mono laser printer loading roller, it is probably not paramount to change the cleaning blade, if you want to remove the cleaning blade, remove the two screws that have the potential to be difficult to remove, there is an adhesive that holds the roller.
Be careful not to damage the rehabilitation blade located with the cleaning blade on the toner side.
Remove the two screws, remove the radical cap, remove the magnetic roller with its bushings, pay attention to the bushings, which are very fragile, remove the two screws, remove the blade, keep in mind that the blade seal sticks. If you want to use the cartridge in your own printer, it is not required to have a seal that cleans all the toner that is left over from the cartridge.
It is preferable to use compressed air, not to inhale the toner dust; if feasible, use a toner workstation that removes all the old toner; It is essential that the toner remaining in the cartridge is mostly residual toner, clean the squeegee with isopropyl alcohol, the squeegee controls the toner ratio on the magnetic roller, the squeegee should be very straight, clean the magnetic roller with the cloth slowly that the magnetic roller carries from the supply chamber to the drum.
Clean the hp monochrome laserjet pro m501dn loading roller with water. The charging roller places the initial charge on the drum and discards the remaining charge at the end of the period. Install the blade and the two screws, re-arrange the loading roller, lubricate the drum with toner or the cleaning blade may damage it by re-assembling the roller insert, turn the metal shaft pin numerous times by hand to make sure the blade is not turned.
There is no fill hole in this hp monochrome laserjet pro m501dn cartridge, so it must be filled through the squeegee slot, the low performance cartridge will take 325 grams of toner, the high performance cartridge will take 630 grams of toner, make sure this Mylar sealing blade is not damaged, and re-arrange the squeegee, and the two screws, if present, make sure the contact print touches the blade, install the magnetic roller with its bushing and the sprocket that has the magnet on the magnetic roller turns the roller with a wrench until the denied radical fits into the slot in the root cap.
This can be complicated to assemble the radical cap, and two screws join both halves, insert both pins that this hp monochrome laserjet pro m501dn cartridge has a chip in that position, replace the chip and use some glue to hold the chip in place