Xerox 3050 Service Manual page 210

Refeed Roll 3 RAP
Procedure
This RAP i s used for Roll
3
Media Feed
problems that are not indicated by a status
code and the Control Panel displays the
message
"REFEED
Roll 3".
The problem may occur
if
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 three
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 3 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
a s 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 3 in the forward and
reverse directions.
Check the connectors for the Roll 3
Motion Sensor (Q6 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 3
Position Sensor (43) from the rear
frame. Clean the Roll
3
Position
Sensor by wiping the face of the
sensor with a clean cloth. Reinstall the
Sensor.
Check the connectors for the Roll 3
Position Sensor (Q3 P I ) and the
Control PWB (A3 P309) for damage.
Ensure that the connectors and pins
are seated correctly.
Ensure that the customer i s running
media that meet the type and size
specifications.
Enter the code (O712j in order to check the
Roll 3 Motion Sensor. The Control Panel will
alternately display
a (01)
and
a. (00)
when the
roll is rotated.
Slowly rotate the Roll 3.
The display
alternately changes from (00) to
(01) when the roll
is
rotated.
Go to FLAG
1
and check the wiring
between the Roll
3
Motion Sensor
(Q6)
and the Control PWB for an open circuit
or
a
short circuit to ground.
If there is no open circuit or short circuit,
replace the Roll
3
Motion Sensor (Q6).
If the problem persists, replace the
control PWB (A3).
Enter the code [0709] in order to check the
Roll
3
Position Sensor. The Control Panel will
display
a
(01) when the media is not sensed
and a
(00)
when the media i s sensed.
Pull out the Bottom Drawer and ensure that
media i s not positioned in the sensor window.
Close the drawer, a (01) is displayed.
Pull out the Bottom Drawer and position the
media so that, the media is located in the
sensor window. Close the drawer, a (00) is
displayed.
A (01) i s displayed when media is not
positioned in the sensor window and a (00) i s
displayed when media is positioned in the
sensor window.
Refeed Roll 3 RAP