Xerox 3050 Service Manual page 76

C3.01
Media Feed RAP
CONTROL PWB (A3)
The status code C3.01 is displayed when the
logic detects that there i s a media feed
problem. As media is fed or rewound along
the media path, the Roll 3 Position Sensor is
blocked and not blocked, causing the sensor
signal to change state. The logic detects a
change in the state of the Roll 3 Position
Sensor signal.
C3.01 Indicates that the logic detected that
either media was not fed to, or
media was not fed or rewound past,
the Roll 3 Position Sensor. The sensor
signal does not change state from a
HIGH to
LOW
or from a
LOW
to HlGH
a s the media is being fed from Roll 3.
The problem may occur i f there is a problem
with the roll drive motor or the motor
control circuitry.
Initial Actions
Open the front doors and pull out the
Bottom Drawer. Check the media
path for obstructions.
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 that the connectors for the Roll
3 Position Sensor (43 P I ) and the
Control PWB (A3 P309) for damage.
Ensure that the connectors and pins
are seated correctly.
Procedure
Enter the code I07091 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) i s
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)
i s
displayed.
If a (01) i s displayed without media in the
sensor window and a (00) is displayed with
media in the sensor window, go to the 7,3
Roll 3 Feed RAP.
If the display does not change from (01) to
(00) when the media is positioned in the
sensor window, continue with this
procedure.
Go to
FLAG 1
and
check the wiring between
the Roll 3 Position Sensor and the Control
PWB for an open circuit or a short circuit to
ground.
If there i s no open circuit or short circuit,
replace the Roll 3 Position Sensor (43).
If the problem persists, replace the Control
PWB (A3).
CONTROL PWR
10 192
C3.01
Media Feed RAP
2-32
3050