10-128 Duplex Pre Regi. Sensor On Jam Rap - Xerox DocuColor 12/DCCS50 Service Manual

10-128 Duplex Pre Regi. Sensor On Jam RAP

The Pre 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, 8.9, and 8.10 for the following procedure.
Check the following:
• Proper Nip Drive force.
• Obstructions in the paper path.
• Contamination on the Pre Regi Roll or 2 nd BTR.
• Ensure that connectors P/J419A, P/J414B
Drive PWB and the Pre Registration Sensor, and there are no obvious crimped or broken
wires.
Procedure
Enter dC330 008-153 Pre Registration Sensor. Press Start. Open the Drawer. Insert a piece
of paper to black the Pre Registration Sensor. Close the Drawer. The display changes from
H to L.
Y N
The display indicates a constant H.
Y N
Go to Flag 1 on BSD 8.8 and check the harness for a short circuit. If the harness is
good, replace the Pre Registration Sensor
Connect the meter from P/J419A-13 on the IOT Drive PWB to GND. Block the Pre Regis-
tration Sensor with a sheet of paper. The voltage at P/J419A-13 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/J419A-14 and P/J419A-12 on the on the IOT Drive
PWB.
Y N
Go to Flag 2 on BSD 8.8 and check the harness for a short circuit. If the har-
ness is good, replace the IOT Drive PWB
Go to Flag 1 and Flag 2 on BSD 8.8 and check the harness for an open circuit. If the
harness is good, replace the Pre Registration Sensor
tinues, replace the IOT Drive PWB
Replace the IOT Drive PWB (PL 9.2).
Enter dC330 008-043 Main Motor 2. Press Start and Stop several times. Main Motor 2 ener-
gizes and deenergizes.
Y N
Press Stop. +24 VDC is measured between P/J414B-3, 4, 5, 6 on the IOT Drive PWB
and GND.
Y N
+24 VDC is measured between P/J414B-1 on the IOT Drive PWB and GND.
A B
Reissue
DocuColor 12/DCCS50
and P/J162 are seated correctly on the IOT
(PL 2.16).
(PL 9.2).
(PL 2.16). If the problem con-
(PL 9.2).
A B
Y N
Replace the IOT Drive PWB
Go to Flag 1 and Flag 2 on BSD 8.9 and check the harness and connectors. If the
harness and connectors are OK, replace Main Motor 2
Press Start. The voltage at P/J414B-3, 4, 5, 6 on the IOT Drive PWB goes to approx-
imately +23 VDC.
Y N
Replace the IOT Drive PWB
Replace Main Motor 2 Motor (PL
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 Pre Registration Sensor.
1/05
10-128 Duplex Pre Regi. Sensor On Jam RAP
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(PL 9.2).
(PL 1.5).
(PL 9.2).
1.5).
Status Indicator RAPs