With the handle of the cartridge facing you, remove two Phillips screws - one from each side on the top of the cartridge.
Using both hands, grab the top of the cartridge with the instruction label on it. To remove it, pull the cartridge top up and back towards you. This is the waste hopper section of the cartridge, and it may leak some toner as it is removed. Turn the waste hopper over and place it on the table with the label facing down.
Place the toner hopper aside and protect it from light.
Hold the waste hopper with the wiper blade facing you. Remove two Phillips screws one from each side of the wiper blade. Lift the blade straight up from the waste hopper and visually inspect it for damage. Clean the blade with compressed air and a clean, lint-free cloth. Set the blade aside.
Clean the remaining waste toner from the waste hopper using a vacuum or compressed air. Be careful not to damage the retaining blade in the waste hopper opposite the wiper blade that was removed. Inspect the retaining blade after cleaning to ensure that it is straight and not damaged.
Pad the wiper blade that is to be installed with padding powder. Reinstall the blade using two Phillips screws, one on each side of the blade. Place the completed waste hopper aside.
Set the toner hopper with the long handle towards your right and remove two Phillips screws that are holding the end cap in place. Using a small, flat-blade screwdriver, carefully pry off the end cap. The end caps contain the drum axles.
Rotate the cartridge so that the opposite end is facing you with the handle of the cartridge to the left. Remove two Phillips screws that are holding the end cap in place. Using a small, flat-blade screwdriver, carefully pry off the end cap.
Rotate the cartridge so that the handle of the cartridge is facing you. Grasp the PCR shaft and slide it towards your left to remove it from the right PCR saddle. To remove the PCR from the left PCR saddle, lift the PCR up on the right side to clear movement and move towards the right to remove the PCR.
Remove the drum by pushing up on the helical gear with your finger enough to grab the entire gear. Pull the drum away slightly from the opposite side and lift it completely out. Set the drum aside in a protective area.
Rotate the cartridge so that the handle is facing towards your left and remove the fill plug from the end cap. Clean out all remaining toner from the inside of the toner hopper. Place the fill plug aside until later.
On the cartridge end that contains the fill plug and electrical contacts, push up the wire that contacts the developer roller shaft. Release the clip that holds the black contact support plate by pushing the tab in from the outside of the cartridge. Gently pull forward on the plate to remove.
Remove the developer roller drive gear from the developer roller using a small, flat-blade screwdriver to push with. The center idle gear in the gear train is loose and can fall off, so remove it and place it aside. The smaller helical diameter teeth face inward.
Remove the developer roller by holding the metal shaft on either end and pulling upward.
Start by placing the cartridge with the cartridge handle facing you and the handle extended outward. Remove two Phillips screws, one from each side of the doctor bar. Carefully lift up the doctor bar from the left side just enough to clear the location pin. Holding the doctor bar steady, work towards the right and lift straight up off the locator pin and back towards you. This will allow the electrical contact wire to rest in the tab slot of the cartridge. Clean with 99-percent Isopropyl alcohol and a lint-free cloth.
Clean the toner hopper area, which includes the toner feed roller, developer roller recovery blade, sealing felts, PCR saddles and toner tank area. Be very careful not to damage these parts by using too strong an air flow.
Place the cartridge with the cartridge handle facing you and the handle extended outward. To install the doctor bar, on the right side push the electrical contact wire forward and to the right to rest just out of the way. Install the blade by lining up the location pins on each side and coming straight down. Hold in place by inserting the two Phillips screws, one on each side of the doctor bar. Move the electrical contact wire back into position.
Holding the developer by the shaft on each side, position and install the developer roller. Push down with just a little pressure to set and replace the developer roller idle and drive gear.
Moving to the electrical contact end of the cartridge, push the electrical contact wire up out of the way and replace the black contact support plate by pushing the contact support plate in until it latches. Bring the electrical contact wire down and in contact with the metal shaft end of the developer roller.
Fill the toner into the toner hopper and replace the fill plug.
Place the cartridge with the cartridge handle facing you and the handle extended outward. Place the drum into the cartridge with the helical gear to your right.
With the longer shaft of the PCR on your left side, install the shaft into the left side PCR saddle enough so that you can clear the right side of the cartridge. Pull the right side saddle up enough so that you can push the PCR towards your right and into the saddle until it stops. Place a little conductive grease on the contact of the PCR saddle before installing it.
Place the toner hopper with the long handle towards your right and install the end cap and the two Phillips screws to hold the end cap in place.
Rotate the cartridge so that the opposite end is facing you with the handle of the cartridge to the left. Install the end cap and the two Phillips screws to hold the end cap in place. Place a little conductive grease on the contacts as applicable.
Place the cartridge with the cartridge handle facing you and the handle extended outward. Holding the waste hopper with the label up and embossed arrows pointing away from you, place the tabs on each side into the slots and tilt forward. Hold in place using Phillips screws, one on each side.
Replace the fuse. The fuse is located on the right side of the cartridge with the cartridge handle facing away from you. The fuse is blown when installed into the printer to reset the counter/flag.
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