Papertake-Up And Paper Exit Sensors; Figure 2-17. Sensor On/Off Timing - Epson ActionLaser 1300 EPL-3000 Service Manual

Paper TaktWp and Paper Exit Sensors
2.1.2.2
The ~aDer take-up sensor has three functions:
is received.
To detect paper size. The printer detects the time it takes for paper to pass the take-up
2)
sensor during paper feeding. A longer amount of time means that long paper is feeding;
a shorter amount of tome means that short paper is feeding.
To detect paper jams and feed jams.
3)
If one of the following conditions is detected, the printer assumes that a paper miss feed has
occurred. On detection of a jam, all elements except the fan motor (M3) are deactivated, with the
following exceptions:
If a paper is being transferred in the printer on detection of condition 1 below, the paper is
ejected and all elements are then deactivated.
if only the condition 1 below is detected, elements other than the heater lamp (Hi) are
deactivated since there is no paper in the fusing unit.
1. The paper take-up sensor (PC1) is not turned on within the specified time after the paper
take-up roller starts to rotate.
The paper take-up sensor (PC1) is on when the power is on or the upper unit is closed.
2.
The paper exit sensor (PC2) is on when the power is on or the upper unit is closed.
3.
The paper take-up sensor (PC1) is not turned off within 16.43 seconds after the leading edge of
the paper reaches the sensor.
The paper exit sensor (PC2) is not turned on within 5.89 to 7.89 seconds after the leading edge
5.
of the paper reaches the paper take-up sensor (PC1).
The paper exit sensor (PC2) is not turned off within
6.
of the paper passes the paper take-up sensor (PC1).
Take Up Solenoid ON
Rev. A

Figure 2-17. Sensor On/Off Timing

Operating Principles
seconds after the trailing edge
6.48 to 8.48
[sec.]
2-11