1. Remove the PCDU (PCDU Removal)
  2. Remove the canopy cover (Canopy Cover Removal)
  3. Cover the ITB with a sheet of A3 paper to protect it while you are working.
    • The drum potential sensor is mounted on the same bracket [A] as the temperature/humidity sensor.
    • The drum potential sensor is connected to a small PCB protected by a plastic cover and mounted on the side of the toner bank cover [B]. (The photo below shows the toner bank canopy removed.)
  4. Disconnect the sensor at the rear.
  5. Disconnect the front end of the bracket (x1).
  6. Lower the bracket [A], and then disconnect the temperature humidity sensor (x1).
  7. Pull the bracket [B] out of the machine with the sensors still attached.
  8. Lay the sensor bracket on a clean, flat surface.
  9. Disconnect the sensor bracket [A] (x2).
  10. Separate the harness from the bracket [B] (x2).
  11. Push the probe through the bracket.
  12. Spread the tabs and separate the sensor from the bracket, but only if the sensor needs to be replaced.
  13. The potential sensor probe and window should be cleaned with a blower brush and a clean dry cloth. (The sensor probe does not need to be separated from the bracket for cleaning.)