Main Tray Elevation Operation - Olivetti DF-790 Service Manual

(1) Main tray elevation operation

The main tray lowers when paper is stacked on it. Once stacking has completed and paper has been
removed, the main tray rises and stops at the home position. The main tray lowers and rises by the forward
and backward rotation of the main tray motor, respectively. The position of the main tray for elevation is
detected by the DF tray upper surface sensor 1/2 as they sense the top surface of the paper loaded on the
main tray. In addition, a paper empty state is detected by the main tray upper limit detection sensor as it
senses the upper most (home) position of the main tray.
(2) Collation
Collation is achieved by laterally sliding the printed pages as the shift guide, which is recessed during collation
is not engaged, is set in position to slide the pages by the DF shift release motor, and subsequently put in
motion by the motors 1 and 2.
Y113480-7
DF Main tray
DF tray sensor 1
DF tray sensor 2
Figure 2-1-14
DF shift release motor
Side shift guide
Figure 2-1-15
2-1-12
DF tray surface sensor 1,2
DF shift motor 1,2
3NB/3ND/3N0/3NK
Sevice Manual