Retry Pickup; Detecting The Size Of Paper - Canon SmartBase PC1200s Service Manual

5.2.1.2 Retry Pickup

If the paper leading edge sensor (PS102) does not detect paper within a specific period of
time after the cassette pickup roller has started to rotate, the machine will start to rotate the
cassette pickup roller once again to execute a retry pickup operation.
If the paper leading edge sensor (PS102) still does not detect paper within a specific pe-
riod of time after the machine executes a retry pickup operation once, the machine will iden-
tify the condition as a jam and will indicate a jam message on the LCD.

5.2.1.3 Detecting the Size of Paper

The machine detects the size of paper in the cassette in any of two ways: LGL size detec-
tion and non-LGL size detection.
LGL detection is performed by means of a LGL paper sensor (PS101). The LGL size de-
tection mechanism is used to prevent picking up a subsequent sheet of paper before the trail-
ing edge of paper leaves the cassette, otherwise occurring if the pickup was let to occur at
the same time using other sizes when picking up LGL paper.
Non-LGL detection is performed using the paper leading edge sensor (PS102) based on
the length of paper. In fax mode, if paper of a size different from the size selected from the
control panel is placed, the DC controller will identify a paper size mismatch at the end of
printing and indicate a message on the LCD.
COPYRIGHT © 2001 CANON INC. 2000 2000 2000 2000 CANON SmartBase PC1200s/iR1200s REV. 0 DEC. 2001
CHAPTER 4 OPERATION
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