Other Jams; Door Open Jam - Canon iR1200 Series Service Manual

Chapter 7
- As part of operation after a pickup delay jam, the delivery sensor (PS3) detects paper, the laser is forced OFF, and
a specific period of time passes.
- At time of cleaning the fixing pressure roller, the trailing edge of paper does not move past the delivery sensor (PS3;
i.e., the sensor does not go OFF) within a specific period of time.

7.2.4 Other Jams

7.2.4.1 Fixing Wrap Jam
After the delivery sensor (PS3) has detected the leading edge of paper, the delivery sensor (PS3) detects the absence
of paper before a specific period of time.
7.2.4.2 Auto Delivery Jam
- When the fixing heater is started, the paper leading edge sensor (PS102) detects the presence of paper.
- The paper group is not known or the paper last subjected to length detection is identified as being LTR or larger;
under either of these conditions, the delivery sensor (PS3) detects paper within 1.7 sec after the fixing heater starts.
- The size of the paper last subjected to length detection is identified as being LTR or larger, and the delivery sensor
(PS3) detects paper within 1.7 sec after the main motor starts.
- While auto delivery is under way, the machine identifies the absence of a cartridge.

7.2.4.3 Door Open Jam

- During printing, the reader unit slide detecting switch (SW1) has detected movement (sliding) for the reader unit.
- If the toner supply cover open/closed detecting switch (SW2) identifies the toner bottle cover as being open during
printing.
- If the toner bottle sensor (PS11) identifies the toner bottle as being displaced during printing.
7-4
SW1 (for jam h)
PS3 (for jam c, d, e, f, or g)
Presence/absence of cartridge
(for jam g; developing bias)
PS103 (for jam a)
PS102 (for jam a, b, or g)
F-7-2
SW2
(for jam h)
PS4 (for jam a)
0006-2959
0007-1202
0006-2970