Xerox 3050 Service Manual page 202

Refeed Roll 1 RAP Procedure
This RAP is used for Roll 1 Media Feed
problems that are not indicated by a status
code and the Control Panel displays the
message "REFEED ROLL 1
".
The problem may occur i f there is a problem
with the media sensors, mechanical
components, the roll drive motor, the motor
control circuitry or poor quality documents.
NOTE:
The component locator drawings and
the circuit diagram are on the next four
pages.
Initial Actions
Ensure that there is an adequate
supply of media, the media is in good
condition and is loaded correctly.
Pull out the Roll 1 Supply Drawer.
Check the Feed Drive Rolls, Feed Pinch
Rolls, and the Pinch Roll Load Springs
for contamination or damage and
correct installation. Clean or replace
as required.
Check that the Upper Feed Baffle that
house the Feed Pinch Rolls is latched in
the correct position.
Check the roll media feed path for
obstructions.
Open the front and the left side doors.
Check the motion sensor and encoder
disk for binding or damage by
rotating the Roll 1 in the forward and
reverse directions.
Check the connectors for the Roll 1
Motion Sensor (44 PI) and the Control
PWB (A3 P309) for damage. Ensure
that the connectors and pins are
seated correctly.
Remove the rear covers and the Roll
1
Position Sensor (Q1) from the rear
frame. Clean the Roll 1 Position
Sensor by wiping the face of the
sensor with a clean cloth. Reinstall the
Sensor.
Check that the connectors for the Roll
1 Position Sensor (Q1 PI) and the
Control PWB (A3 P309) for damage.
Ensure that the connectors and pins
are seated correctly.
Ensure that the customer is running
media that meet the type and size
specifications.
Enter the code [0710] in order t o check the
Roll 1 Motion Sensor. The Control Panel will
alternately display a (01) and a (00) when the
roll is rotated.
Slowly rotate the Roll
1
The display alternately changes from (00) t o
(01) when the roll is rotated.
Go t o FLAG
1
and check the wiring
,
between the Roll
1
Motion Sensor and the
1
Control PWB for an open circuit or a short
circuit t o ground.
If there is no open circuit or short circuit,
replace the Roll 1 Motion Sensor (44).
If the problem persists, replace the
Control PWB (A3).
Enter the code [0707] in order t o check the
Roll 1 Position Sensor. The Control Panel will
display a (01) when the media is not sensed
and a (00) when the media is sensed.
Pull out the Top Drawer and ensure that
media is not positioned in the sensor window.
Close the drawer, a (01) is displayed.
Pull out the Top Drawer and position the
media so that, the media is located in the
sensor window. Close the drawer, a (00) is
displayed.
A (01) is displayed when media
is
not
positioned in the sensor window and a (00) is
displayed when media is positioned in the
sensor window.
31 93
Refeed Roll
1
RAP
2-110 3050