Canon PD-82, Руководство по обслуживанию

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D. 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 (PS1)
• Paper jam sensor (PS2)
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 registration sensor (PS1) cannot detect the paper within 1.0 second after receiving the
pick-up command, the CPU assesses a pick-up delay jam.
Paper pick-up retry function
If the CPU cannot detect the paper when executing the first jam check, it performs the paper
pick-up operation again. If the CPU cannot detect the paper for the second time, it assesses a
pick-up delay jam.
2. Feed unit delay jam
If the paper jam sensor (PS2) cannot detect the paper within 1.6 seconds after the registration
clutch (CL1) is driven, the CPU assesses a feed unit delay jam.
3. Feed unit stationary jam
If trailing edge of the paper does not pass through the paper jam sensor (PS2) within the
prescribed period of time (T) after PS2 detects the leading edge of the paper, the CPU assumes a
feed unit stationary jam.
T=about 2.1 seconds (A4 landscape), about 3.6 seconds (Ledger)
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CHAPTER 2