Specifications

The registration sensor, the exit sensor and the relay sensor monitor the
movement of the paper through the paper path. If the CPU determines that a
misfeed exists, the Check Paper Path and the Misfeed Location indicators
turn on. When the main switch is turned on, the CPU checks these three
sensors for initial misfeed. During the copy cycle, the CPU performs three
kinds of misfeed detection:
J1: Checks whether the registration sensor is actuated within 10 pulses
(40 milliseconds) after the registration clutch turns on. (The Misfeed
Location indicator "A" or "B" turns on.)
J2: Checks whether the exit sensor is actuated within 700 pulses (2.8
seconds) after the registration clutch turns on. (The Misfeed Location
indicator "C" turns on.)
J3: Checks whether the copy paper has passed through the exit sensor
2.75 (A4 sideways) or 2.80 (Letter sideways) seconds after the exit
sensor has been actuated. (The Misfeed Location indicator "D" turns
on.)
JR: Checks whether the relay sensor is actuated within 285 pulses (1.14
seconds) after the 3rd feed clutch turns on. (The Misfeed Location
indicator "A" turns on.)
1 December 1990
11-24