Note:  Adjust the side guides to the media size correctly; otherwise jams may occur. 8.   When the side guides are aligned, adjust the length guide. Note:  Make sure the stack is under the retaining clip on the guide. Also make sure the guide stopper is locked firmly in the guide hole on
the bottom of the paper tray. Adjust the length guide to the media
size correctly; otherwise jams may occur. 40    Infoprint 21: User’s Guide