Paper Feed And Misfeed Detection Timing - Ricoh A183 Service Manual

10.5 PAPER FEED AND MISFEED DETECTION TIMING

0
0.1
Start Key
Main Motor
Paper Feed
Clutch
Registration
Sensor
Registration
Solenoid
Exit Sensor
The registration sensor and the exit sensor are used for misfeed detection. If
the CPU detects a misfeed, the Check Paper Path or the Add Paper indicator
turns on.
When the main switch is turned on, the CPU checks these sensors for initial
misfeed.
During the copy cycle, the CPU performs four kinds of misfeed detection:
PE : Checks whether the registration sensor is actuated within 1.5 seconds
after the Start key is pressed. Since this machine has no indicator or
sensor to detect paper end, the PE indicator is lit in the paper end
condition as well.
(1): Checks whether the copy paper has passed through the registration
sensor 5.7 seconds after the Start key is pressed.
(2): Checks whether the exit sensor is actuated within 5.7 seconds after
the Start key is pressed.
(3): Checks whether the copy paper has passed through the exit sensor
10.3 seconds after the Start key is pressed.
SM
1.5
Paper Length Detection
P E
2.7 3.2
O N C h e c k
2-37
PAPER FEED AND REGISTRATION
5.7
O F F C h e c k
(1)
5.7
O N C h e c k
(2)
(second)
10.3
(3)
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