Jam Detection; Overview; Jam Types - Canon Buffer Pass Unit-N1 Service Manual

Jam Detection

Overview

The following diagram shows the arrangement of sensors used to detect jams in the buffer pass.

Jam Types

Jam sensors and jam codes are listed below.
Jam type
Inlet sensor delay Jams
Exit sensor delay Jams
Inlet sensor stationary Jams
Exit sensor stationary Jams
Early timing jam
Inlet sensor power-on jam
Exit sensor power-on jam
Door open jam
Sequence jam
PS402
Sensor
PS401 When the inlet sensor (PS401) does not detect the paper even when the paper is fed
the specified distance after receiving a paper delivery signal from the host machine.
PS402 When the exit sensor (PS402) does not detect the paper even when the paper is fed
the specified distance after the inlet sensor (PS401) detects the paper.
PS401 When the paper does not pass through the inlet sensor (PS401) even when the paper
is fed the specified distance after the sensor detects the paper.
PS402 When the paper does not pass through the exit sensor (PS402) even when the paper
is fed the specified distance after the sensor detects the paper.
PS401 When the Inlet Sensor (PS401) detect the paper before feed speed is changed.
PS401 When the inlet sensor (PS401) detects paper during power-on.
PS402 When the exit sensor (PS402) detects paper during power-on.
PS403 When it is detected that the upper unit has been opened during operation.
- When the replay from the finisher is not detected for 500 msec after sent the signal
from the buffer pass to the finisher.
PS403
PS401
Jam description
10
2. Technical Explanation