Xerox 3050 Service Manual page 44

CONTROL PWB (A3)
/
(
A1 .02/ A1 .43 Document
Handler RAP
(212193)
The status code A1 is displayed when the
logic detects that there is a document
handler problem.
As the document i s
rescanned, the Front Document Sensor i s
actuated, causing the sensor signal to
change state. The logic detects a change i n
the state of the Front Document Sensor
signal.
A1.02
lndicates that the logic detected
that the Front Document Sensor
was actuated at Power On. The
sensor signal was HIGH when the
Power On
(1)
button was pressed.
A1.43 Indicates that the logic detected
that the document did not reach
the Front Document Sensor, when
the document was being
rescanned. The sensor signal did
not change state from a LOW to
HIGH as the document was being
rescanned.
The problem may occur i f one of the
following conditions exist:
the Document Handler has an
excessive static condition.
the document
i s
not in good
condition.
there Is a problem with the Document
Drive Motor or the motor control
circuitry.
Initial Actions
/
p3o4 A3
I
Remove the Upper Document
Handler. Ensure that the actuator for
the Front Document Sensor i s not
0
binding or damaged.
- u r n
' 2 %
%,K?
,,*,
A
11113
-
-
Ensure that the connectors for the
Front Document Sensor (422
P I )
and
the Control PWB (A3 P304) are not
damaged and are seated correctly.
Check that the copier has Tag/ MOD
02 installed (Document Sensor
-
0
Rings).
Procedure
CONTROL PWR
J101
. . t
*It,
JJO
9 . lllt
Enter the code 105021 to check the Front ,,
.-=I
; ,
a
Document Sensor. The Control Panel diselav
indicates a (01) when the sensor is actuated.
*
Activate the Front Document Sensor.
If the display does change from (00) to (Ol),
go to the 5.1 Document Handler RAP.
If the display does not change from
(00) to
(01)
when the sensor i s actuated, continue
with this procedure.
Go to FLAG 1 and check the wiring between
the Front Document Sensor 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 Front Document Sensor
( 9 2 2 ) .
If the problem persists, replace the Control
PWB (A3).
A1.021 A1.43 Document Handler RAP