Double-Feed Sensors, Registration Timing Sensor

1. Remove the support rails. (Support Rails)
2. Remove the black cover (x2).
3. Disconnect the sensor bracket (x1).
   

Double-feed Sensors

1. Lift the PCB so that you can see double-feed sensor 2 (receiver) [A] and double-feed sensor 1 (emitter) [B].
   
2. Blower brush: both sensors.
   
   Registration Timing Sensor
3. Disconnect the sensor bracket (x1).
4. Blower brush: photosensor.