Xerox 3050 Service Manual page 42

A1.03/Al.25/ Al.26/ Al.46
Document Handler RAP
The status code A1
logic detects that
handler problem.
scanned and then
Document Sensor
is displayed when the
there i s a document
As the document is
rescanned, the Rear
is actuated and
deactuated, causing the sensor signal to
change state. The logic detects a change i n
the state of the Rear Document Sensor
signal.
A1 . O 3
Al.25
A1.26
Al.46
lndicates that the logic detected
that the Rear Document Sensor was
actuated at Power On. The sensor
signal was HlGH when the Power
On
(1)
button was pressed.
lndicates that the logic detected
that the document did not reach
the Rear Document Sensor. The
sensor signal did not change state
from a LOW t o HlGH as the
document was being scanned.
lndicates that the logic detected
that the document reached the
Rear Document Sensor too early.
The sensor signal changed state
from a LOW to HlGH too fast as the
document was being scanned.
lndicates that the logic detected
that the document was not driven
out of the rear or rescanned to the
front of the document handler.
The Rear Document Sensor did not
change state from a HlGH to LOW
as the document was being scanned
or rescanned.
The problem may occur
if
One of the
Go t o FLAG 1 and check the wiring between
following conditions exist:
the sensor and the Control PWB for an open
the Document
Handler
has an circuit or a short circuit to ground.
excessive static condition.
If there is no open circuit or short circuit,
the
document
is not
in good
replace the Rear Document Sensor (426).
condition.
If the problem persists, replace the Control
there is a problem with the Document
PWB (A3).
Drive Motor or the motor control
circuitry.
Initial Actions
Remove the Upper Document
Handler. Ensure that the actuator for
the Rear Document Sensor is not
binding or damaged.
CONTROL PWB (A3)
Ensure that the connectors for the
I
Rear Document Sensor (426 PI) 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).
Ulllll " I -
=-
A
Procedure
Enter the code [0503] to check the Rear
Document Sensor. The Control Panel display
indicates a (01) when the sensor is actuated.
mm
CONTROL PWR
2%
: I )
Activate the Rear Document Sensor.
11 11
If the display does change from (00) to (OI),
go to the 5.1
Document
Handler RAP.
J J O Jlll JllO
J309
JIM
If the display does not change from (00) t o
.
a ,
I , P
,,,.
&,
*
(01) when the sensor is actuated, continue
with this procedure.
1590
31 93
A1 .03/ A1.25/ A1.26/ A1.46 Document Handler
RAP
2-4 3050