2 push the adf door release to open the adf door.
3 open the retard roller cover.
4 remove the retard roller module in the direction of the arrow.
5 install the new retard roller module by matching the groove of its shaft with the groove of the metal holder.
make sure that both ends of the shaft reach the springs of the holder.
6 close the retard roller cover.
7 close the adf door.
·when you close the adf door, close it securely until the door is locked.
8 clear the roller replacing counter with user utility.
·click [clear counter] button for [after replace roller] with user utility.