Xerox DocuColor 12/DCCS50, Service Manual

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1/05
2-146 DocuColor 12/DCCS50
10-127 Duplex Registration Sensor On Jam RAP
Reissue
Status Indicator RAPs
10-127 Duplex Registration Sensor On Jam RAP
The Registration Sensor did not actuate within the specified time after the start of Paper Feed
in Duplex Mode.
Initial Actions
Refer to BSD 8.8 and 8.10 for the following procedure.
Check for the following:
•
Obstructions in the paper path.
• Contamination on the Regi Roll, 2nd BTR or Vacuum Transport.
• Ensure that connectors P/J421A , P/J419A , P/J412A and P/J162 are seated correctly
on the IOT Drive PWB and the Registration Sensor, and there are no obvious crimped or
broken wires.
• Clean the Registration Sensor.
Procedure
Enter dC330 008-155 Registration Sensor . Press Start . Block the Registration Sensor with a
sheet of paper The display changes from H to L.
Y N
The display indicates a constant H.
Y
N
Go to Flag 5
on BSD 8.8 and check the harness for a short circuit. If the harness is
good, replace the Registration Sensor ( PL 2.15 ).
Connect the meter from P/J421A -11 on the IOT Drive PWB to GND. Block the Registra-
tion Sensor with a sheet of paper. The voltage at P/J421A -11 goes from +5 VDC
when the sensor is not blocked, to less than +1.0 VDC when the sensor is blocked.
Y
N
There is +5 VDC between
P/J421A -12 and P/J421A -10 on the on the IOT Drive
PWB.
Y
N
Go to Flag 6 on BSD 8.8 and check the harness for a short circuit. If the har-
ness is good, replace the IOT Drive PWB ( PL 9.2 ).
Go to Flag 5 and Flag 6 on BSD 8.8 and check the harness for an open circuit. If the
harness is good, replace the Registration Sensor ( PL 2.15 ). If the problem contin-
ues, replace the IOT Drive PWB ( PL 9.2 ).
Replace the IOT Drive PWB ( PL 9.2 ).
Enter dC330 010-005 Inverter Gate Solenoid (Exit) . Press Start . The Inverter Gate Sole-
noid energizes.
Y
N
There is +24 VDC between
P/J412B -9 and GND.
Y N
There is +24 VDC between
P/J412B -8 and GND.
Y N
Replace the IOT Drive PWB ( PL 9.2 ).
Go to Flag 3 on BSD 10.7 and check the harness for an open circuit. If the harness is
good, replace the Inverter Gate Solenoid ( PL 2.25 ).
Press Start . The voltage at P/J412B -9 goes to less than +1.0 VDC.
Y N
Replace the IOT Drive PWB ( PL 9.2 ).
Replace the Inverter Gate Solenoid ( PL 2.25 ).
Enter dC330 008-054 Registration Motor . Press Start and Stop several times. The Regis-
tration Motor energizes and deenergizes.
Y
N
Press Stop . +24 VDC is measured between P/J419A -3, 4, 5, 6 on the IOT Drive PWB
and GND.
Y
N
+24 VDC is measured between
P/J419A -1 on the IOT Drive PWB and GND.
Y N
Replace the IOT Drive PWB ( PL 9.2 ).
Go to Flag 3 and Flag 4 on BSD 8.9 and check the harness and connectors. If the
harness and connectors are OK, replace the Registration Motor ( PL 2.15 ).
Press Start . The voltage at P/J419A -3, 4, 5, 6 on the IOT Drive PWB goes to approx-
imately +18 VDC.
Y
N
Replace the IOT Drive PWB ( PL 9.2
).
Replace the Regi. Motor ( PL 2.15 ).
Check for obvious damage, missing and/or broken Drive Motor gear assemblies and drive
belts that would cause the paper to be slow to actuate the Registration Sensor.
A
A
B
B
C
C
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