Canon PAPER DECK-C1, Руководство по обслуживанию

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C. Jam Detection
The paper sensors listed below are used to detect the presence of paper and that
paper is being correctly delivered.
• Registration paper sensor (PS1)
• Jam sensor (PS2)
Paper jams are detected depending on whether or not the paper appears at the dif-
ferent sensors within the check timing intervals stored in the microprocessor (CPU) in the
paper deck drive PCB.
When the CPU senses that a paper jam has occurred, paper feed to the copier is
stopped and the option controller PCB is notified of the paper jam.
1. Registration Paper Sensor Delay Jam
When paper does not reach the registration paper sensor (PS1) within the stipulated
time after start of paper feeding, the CPU assumes that a registration paper sensor delay
jam has occurred.
Figure 2-212
• For cassette 3 paper feeding
T
1
= approximately 1.31 sec
• For cassette 4 paper feeding
T
1
= approximately 1.72 sec
CHAPTER 2 OPERATION OVERVIEW
2-18
COPYRIGHT © 1999 CANON INC. CANON 2
×
500 SHEET PAPER DECK-C1 REV.0 FEB. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
(Unit: sec) (Unit: sec)
COPY/PRINT
Abnormal
T
1
COPY/PRINT
Normal
Cassette paper feed solenoid (SL1)
Jam check
Registration paper sensor (PS1)
Paper feed motor (SP3)
T
1