Oce 3121 Technical & Service Manual page 690

Movement of the trays
a. Drive system for the movement of the trays
Motor M7 rotates a gear and cam system to move the trays.
The motor M7 for the tray movement is a DC motor. The clockwise rotation of
the motor is controlled by the tray shift motor drive signal (TSMD) from the
tray control PBA.
b. Timing of the movement of the trays
The tray starts to shift as soon as the copier's registration roller turns on in re-
sponse to the first page of a received document.
Special trays A and B move as a single unit.
Tray controller PCB
Micro-
processor
(Q7)
Timing of the movement of the trays
I
2 types of output delivered to special tray A: continuously
Copier registration
roller ON signal
(REGD)
Copier delivery
sensor (CEJCT)
Tray A delivery sensor
(PI8)
Tray B delivery sensor
(PI9)
Tray shift motor (M7)
Tray position sensor
(PI12)
∗1 The Multi Device Controller sends a command to the copier for a printout of the 1st communication.
∗2 The Multi Device Controller sends a command to the copier for a printout of the 2nd communication.
540 TSM Océ 3121
24V
Q21
Q52
TSMD
: Flow of current while motor rotates.
∗1
Received document of 1st communication
Special tray shift from front to rear
J12-13
Q22
-14
∗2
Received document of 2nd communication
Special tray shift from rear to front
Functional description of the sorter
M7 Tray shift motor