1. Remove the 1st and 2nd paper tray. (Paper Feed Sensor (S12) (S22) (IM C6000/5500/4500/3500/3000))
  2. Remove the main power switch cover [A].
  3. Insert a screwdriver through the hole in the frame, and detach the temperature and humidity sensor (S41) together with its bracket [A].
  4. Remove the temperature and humidity sensor (S41) [A].