Functional Description; Pick-Up And Feeding - Oce 3121 Technical & Service Manual

Functional description

1 Pick-up and feeding

Outline
The copier has a centre reference. The copy paper moves along the centre of
the pick-up and feeding unit. The pick-up system comprises two cassettes (up-
per, lower) and the speciality tray.
Copy paper from one of the cassettes, or the speciality tray, is controlled by the
registration roller. This roller ensures that the leading edge of the paper coin-
cides with the leading edge of the image on the OPC.
Nine sensors are used to monitor the movement of the copy paper. Seven sen-
sors are used to detect jams.
Notation
PS4
PS5
PS7
Q1604
Q1605
PS8
PS11
PS12
PS13
*pin on the DC control PCB.
List of sensors
ed.1
Name
Sensor for the speciality tray
Sensor for the pre-registration
Fuser sensor PS7
Sensor for the upper cassette
Sensor for the lower cassette
Sensor for the vertical transport
Sensor for the re-pick entry
Sensor for the lower refeed
Sensor for the output tray
Signal Pin*
MFPD* J113-A11
PDP1 J113-A5
PDP3 J109-6
UCSPD* J114-A10
LCSPD* J114-A11
PDP4 J113-A2
PDP5* J103-2
PDP6* J105-B2
PDP7* J105-A2
12 Paper trays 501