Canon LBP6670dn Series Service Manual page 30

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Technology > Pickup Feeding System > Jam Detection > Door Open Jam
■ Reverse Stationary Jam
When the Duplex Reverse Sensor (PS917) cannot detect the trailing edge of paper after the
specified time has passed since the sensor detected the leading edge of paper, it is judged
as a reverse stationary jam.
■ Internal Residual Jam
When a paper is detected by the TOP Sensor (PS912), Fixing Delivery Sensor (PS916),
Paper Width Sensor (PS922), or Duplex Reverse Sensor (PS917) at the time of starting initial
rotation, it is judged as an internal residual jam.
■ Door Open Jam
When a door-open is detected while feeding papers, it is judged as a door open jam.
2 Technology > Pickup Feeding System > Jam Detection > Door Open Jam
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