Remove the rear cover [B] x3, Coupling x1. Release the front tab [C]. Press the Reset Yellow key 3. Last updated on November 8, 7: Do not spill developer on the gears or sponges.

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Replace the drum [E] White clip x1 [F]. On the number pad enter 1 0 7 4. Remove ,d433 rear cover [B] x3, Coupling x1.

The drum unit is photo conductive. Assemble the development unit.

Install the PCU in the machine. Release the front tab [C]. Turn on the main power switch.

Turn the development roller gear [I] to remove toner from around the development roller. Make sure that the holes for the screws on the front and rear end of the PCU are aligned correctly. Remove the front cover [A] x2. Make sure that the head of the stud is put in lainer correct position.

Toner for Lanier LD B

Open the right cover [A] and front cover [B]. Replace the charge roller [E]. Do not spill developer on the gears or sponges. Open the developer pack [J] Replace the cleaning blade [A] x2 Reinstallation: Lightly tap the top of the PCU [A] with a screwdriver at 8 locations. Separate the top [E] and bottom [F] of the development unit. Therefore, I recommend installing the new drum unit in the machine right before you put the two halves back together. Therefore, I would recommend cleaning off a desk or work area ahead of time, organize your parts, then remove the PCU unit and take it over to the area where you will be working.


Spread the vinyl sheet provided with the developer kit on a flat surface. While turning the black gear [K], slowly move the pack left and right and pour half of the lznier over the auger [L].

Assemble the PCU and install it in the machine. Press and Hold the C key. When the drum surface is touched or becomes dirty, wipe it with a dry cloth or clean it with wet cotton. Open and close the door two more times. After the machine turns the development roller for 10 seconds, go to the next step. To prevent toner leakage, never loosen or remove the screws shown in the illustration below. Remove the front stud [A]. Continue to rotate the black gear until the developer is level.

See Note in Bold Green above.

Lanier LD433

Then push down to lock the tabs on the front and rear end of the PCU. Set the rear cover and front cover [B]. Remove the rear shoulder screw [B] x1. Replace the cleaning roller [F].