Detecting Jams; Outline - Canon iR1600 Series Service Manual

4 Detecting Jams

4.1 Outline

The machine is equipped with 3 jam sensors used to motor the movement of paper. In
addition to these sensors, the machine is also provided with sensors to find out the pres-
ence/absence of paper in the cassette and manual feed tray (1 pc. each).
The presence/absence of paper or of a jam is checked at such times as programmed in
advance in the CPU of the DC controller PCB and in relation to the presence/absence of
paper over a specific sensor at a given time. If the machine detects a jam, it will turn off
the main motor (M101), and will indicate a jam message in the control panel.
If a jam occurs while the machine is in copy mode, all images stored in
memory will be lost, requiring the machine to start with the original for
which a jam has occurred.
Memo
The following are the sensors used to monitor the movement of paper:
Notation
PS101 Registration paper sensor
PS102 Paper full sensor
PS103 Delivery sensor
PS105 Multifeeder paper sensor
PS151 Cassette paper sensor
PS152 Retry sensor
You can check the condition of a sensor (presence/absence of paper or
jam detection) by making the following selections; service mode>test
mode>6: FACULTY TEST>6-3: SENSOR.
COPYRIGHT© 2002 CANON INC.
Name
T06-401-01
2000 CANON iR1600/iR2000/iR1610/iR2010 SERIES REV.0 MAR. 2002
CHAPTER 6 PICKUP/FEDING SYSTEM
Delay jam Stationary
jam
Present Present
Absent Absent
Present Present
Absent Absent
Absent Absent
Present Present
Stationary jam
at power-on
Present
Absent
Present
Absent
Absent
Present
6-13