Gp 22 Paper Misfeed Detection - Xerox FaxCentre F116 Service Manual

General Procedures/Information

GP 22 Paper Misfeed Detection

Overview
The machine determines if paper is left inside itself by detecting the status (H or L) of the signal
output from the Paper Feed Sensor (PS1) and the Paper Exit Sensor (PS3).
A paper misfeed while paper is being transported is detected by monitoring the timing at which
the signal from the Paper Feed Sensor (PS1) or the Paper Exit Sensor (PS3) rises or falls.
When a paper misfeed is detected, the drive for all elements is stopped.
During multi printing:
If there is paper being transported through the machine when condition 2 listed below is
detected, all elements but the Fuser Lamp (H1) will be stopped after the paper has been fed out
of the machine.
During single printing:
When only condition 2 listed below is detected, all elements but the Fuser Lamp (H1) will be
stopped.
Paper Misfeed Detecting Conditions
1. The Paper Feed Sensor (PS1) is activated within about 0.2 sec. (within about 0.4 sec. at 1200
dpi) after the paper Feed sequence has been started in the Main Paper Tray/Multi-purpose
Tray (Paper Feed Solenoid is energized, causing the Paper Feed Roll to start turning) or within
about 0.45 sec. (within about 0.9 sec. at 1200 dpi) after the paper Feed sequence has been
started in the Second Paper Cassette Unit.
2. The Paper Feed Sensor (PS1) is not activated within about 0.2 sec. to 1.15 sec. (within about
0.4 sec. to 2.30 sec. at 1200 dpi) after the paper Feed sequence has been started in the Main
Paper Tray/Multi-purpose Tray (Paper Feed Solenoid is energized, causing the Paper Feed
Roll to start turning) or within about 0.45 sec. to 1.53 sec. (within about 0.9 sec. to 3.06 sec. at
1200 dpi) after the paper Feed sequence has been started in the Second Paper Cassette Unit.
3. The Paper Feed Sensor (PS1) is not deactivated within about 1.30 sec. to about 4.09 sec.
(within about 2.60 sec. to 8.18 sec. at 1200 dpi) after the leading edge of the paper has
reached the Paper Feed Sensor (PS1) (PS1: activated).
4. The Paper Exit Sensor (PS3) is not activated within about 1.40 sec. to about 1.82 sec. (within
about 2.80 sec. to 3.64 sec. at 1200 dpi) after the leading edge of the paper has reached the
Paper Feed Sensor (PS1) (PS1: activated).
5. The Paper Exit Sensor (PS3) is not deactivated within about 1.38 sec. to about 1.86 sec.
(within about 2.76 sec. to 3.72 sec. at 1200 dpi) after the trailing edge of the paper has moved
past the Paper Feed Sensor (PS1) (PS1: deactivated).
6. The Paper Feed Sensor (PS1) is in the activated state when the Power Switch (S1) is turned
ON or the cover is closed.
7. The Paper Exit Sensor (PS3) is in the activated state when the Power Switch (S1) is turned
ON or the cover is closed.
6-64 9/04 FaxCentre F116/F116L