Ricoh FT5233 Service Manual page 726

MISFEED DETECTION
7. MISFEED DETECTION
Paper Sensor
In addition to being used for the exit roller and bin drive timing, the paper
sensor checks for a misfeed in the sorter. The copier CPU checks whether
the paper sensor is actuated within 942 pulses (3.8 seconds) after the
registration clutch turns on (at 2,000 pulses). (J1: Paper Sensor ON Check)
Also, the copier CPU starts a timing cycle when the paper sensor is actuated.
Then, at 2.75 (A4 sidewise) or 2.80 (Letter sidewise) seconds, the CPU
checks whether the copy paper has passed through the paper sensor. (J2:
Paper Sensor OFF Check)
In misfeed condition, the "Check Paper Path" and "Misfeed Location"
indicators lights and copier operation is inhibited. To recover the sorter from
the misfeed condition, the sorter has to be slid away from the copier, then,
after misfed paper removal, returned to its original position.
J1
2942
2.75 sec (A4 sidewise)
2.80 sec (LT sidewise)
8
12 February 1992
J2 J1
2942
2.75 sec (A4 sidewise)
2.80 sec (LT sidewise)
J2