Xerox 3050 Service Manual page 70

Cl.05 Media Feed RAP
The status code C1.05
is
displayed when
the
logic detects that there
is
a Roll
1
media feed
problem. As media is fed from Roll 1 or
rewound onto Roll
1;
the roll rotates,
causing the Roll 1 Motion Sensor to be
alternately blocked and not blocked by the
rotating encoder disk. The logic senses a
change in the state of the Roll 1 Motion
Procedure
Enter the code [0710] in order to 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.
If
the display alternately change from (00) to
(01) when the roll is rotated, go to the 7.1
Roll 1 Feed RAP. On copiers equipped with
sensor signal.
Tag1 MOD 05 (~irmware ~evision~7t1192) or
C1.05 Indicates that no motion
is
detected
(
Tag1 MOD 16 (Firmware Revision 2/8/93) go
by the logic from the Roll 1 Motion to the C1.O1 Media Feed RAP. Perform the
Sensor, The sensor signal does not
continuously change state from a
HIGH to LOW a s the media is being
fed or rewound..
The problem may occur if there is a problem
with the roll drive motor or the motor
control circuitry.
Initial Actions
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 (Q4 P I ) and the Control
PWB (A3 P309) for damage and ensure
that they are seated correctly.
R A P before going to the 7.1 Roll 1 Feed RAP.
If the display does not change from (00) to
(01) when the roll is rotated, continue with
this procedure.
Go to
FLAG 1
and check the wiring between
the Roll 1 Motion 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 1 Motion Sensor (44).
If the problem persists, replace the Control
PWB (A3).
CONTROL PWB (A3)
i
CONTROL PWR
31 93
C1.05
Media Feed RAP
2-26 3050