Cleaning the Density Sensor on the magicolor 3100DN/3300

 The printer’s transfer roller contains a density sensor to detect the density of media passing by. When the sensor gets dirty or dusty, print quality will degrade. When that happens perform the following steps.

1. Turn off the printer.

2. Open the front cover.

3. Grasp the two tabs (1) on the transfer roller to lift it straight up (2) out of the printer. Be careful not to spill toner into the printer.

Do not touch or scratch the black surface of the transfer roller or the density sensor window.

4. With a clean, dry cloth or cotton swab, gently wipe the density sensor. Do not use force to clean the sensor window.

5. Replace the transfer roller by inserting the pins at both ends of the transfer roller into the U-shaped bearings inside the printer.

6. Push down on the two tabs until they click to lock the transfer roller cartridge into the printer.

7. Close the front cover.

8. Turn on the printer.