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7.
Troubleshooting
7-1.
Paper Misfeed Detection
(1)
Overview
The printer determines if paper is left inside itself by detecting the status (H or L) of the signal out-
put from the Paper Take-up 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 Take-up 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 printer when condition 2 listed below is detected, all
elements but the Heater Lamp (H1) will be stopped after the paper has been fed out of the printer.
• During single printing:
When only condition 2 listed below is detected, all elements but the Heater Lamp (H1) will be
stopped.
(2)
PagePro 1250E Paper Misfeed Detecting Conditions
1. The Paper Take-up Sensor (PS1) is activated within about 0.2 sec. (within about 0.4 sec. at 1200
dpi) after the paper take-up sequence has been started in the Multi-purpose Tray (Paper Take-up
Solenoid is energized, causing the Paper Take-up Roller to start turning) or within about 0.45
sec. (within about 0.9 sec. at 1200 dpi) after the paper take-up sequence has been started in the
Second Paper Cassette Unit.
2. The Paper Take-up 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 take-up sequence has been started in the Multi-
purpose Tray (Paper Take-up Solenoid is energized, causing the Paper Take-up Roller 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 take-up sequence has been started in the Second Paper Cassette Unit.
3. The Paper Take-up 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 Take-up 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
Take-up 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 Take-up Sensor (PS1) (PS1: deactivated).
6. The Paper Take-up 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.
(3)
PagePro 1200W Paper Misfeed Detecting Conditions
1. The Paper Take-up Sensor (PS1) is activated within about 0.2 sec. (within about 0.4 sec. at 1200
dpi) after the paper take-up sequence has been started in the Multi-purpose Tray (Paper Take-up
Solenoid is energized, causing the Paper Take-up Roller to start turning) or within about 0.45
sec. (within about 0.9 sec. at 1200 dpi) after the paper take-up sequence has been started in the
Second Paper Cassette Unit.
2. The Paper Take-up Sensor (PS1) is not activated within about 0.2 sec. to 1.48 sec. (within about
0.4 sec. to 2.96 sec. at 1200 dpi) after the paper take-up sequence has been started in the Multi-
PagePro 1200 Series Troubleshooting
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Table of Contents
Troubleshooting
