Oce 3121 Technical & Service Manual page 503

2 Detection of jams
Outline
Seven sensors are used to monitor the movement of the copy paper, and to de-
tect jams.
The DC control PBA monitors various points of the paper transport, to check
the arrival and departure of the paper. If one of the sensors detects a jam, the
main motor is switched OFF, and a message is displayed on the control panel.
.
PS4
PS5
PS7
PS8
PS11
PS12
PS13
*pin on the DC control PCB.
522 TSM Océ 3121
Sensor
Sensor for the speciality tray
Sensor for the pre-registration
Fuser sensor PS7
Sensor for the vertical transport
Sensor for the re-pick entry
Sensor for the refeed unit
Sensor for the output tray
Signal Pin*
MFPD* J113-A11
PDP 1 J113-A5
PDP 3 J109-6
PDP 4 J113-A2
PDP 5* J103-2
PDP 6* J105-B2
PDP 7* J105-A2
Functional description