Canon LBP 2460 - B/W Laser Printer, Service Manual

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F. Paper Jam Detection
The following paper sensors are installed to detect the presence of paper and ensure that the
paper is fed correctly.
• Registration paper sensor (PS31)
• Paper jam sensor (PS32)
The CPU determines whether or not a paper jam has occurred by monitoring the paper at each of
the sensors according to the pre-set 'check timing' in the memory. When the CPU assesses that a
jam has occurred, the feed operation to the printer is stopped, and notification of the jam is sent
to the option controller.
1. Pick-up delay jam
If the paper has not reached the registration sensor (PS31) in the designated time after receiving
the pick-up command, the CPU assesses a pick-up delay jam.
Figure 2-10-11
CHAPTER 2
2 - 92
PRINT
1.07 1.07
PRINT
Pick-up motor (SMT31)
(Unit: Seconds)
Jam check
Normal Abnormal
(Unit: Seconds)
Pick-up command
Registration paper sensor (PS31)