Xerox DocuColor 12/DCCS50

1/05
2-147
DocuColor 12/DCCS50
10-128 Duplex Pre Regi. Sensor On Jam RAP
Status Indicator RAPs
Reissue
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/J4
14B and P/J162 are seated correctly on the IOT
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.
YN
The display indicates a constant H.
YN
Go to Fl
ag 1 on BS
D 8.8 and check the harness for a short circuit. If the harness is
good, replace the Pre Registration Sensor (PL 2.16).
Connect the meter from P/J419A-13 on th
e IOT Drive PWB to GND. Block the Pre Regis-
tration Sensor with a sheet of paper. The voltage at P/J4
19A-13 goes from +5 VDC
when the sensor is not blocked, to less than +1.0 VDC when the sensor is blocked.
YN
There is +5 VDC between P/
J419A-14 an
d P/J419A-12 on the on the IOT Drive
PWB.
YN
Go to F
lag 2 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 1 and Fla
g 2 on BSD 8.8 and check the harness for an open circuit. If the
harness is good, replace the Pre Registration Sensor (PL 2.16). If the problem con-
tinues, replace the IOT Drive PWB (PL 9.2).
Replace the IOT Drive PWB (PL 9.2).
Ent
er dC330 008-043 Main Motor 2. Pr
ess Start and Stop several times. Main Motor 2 ener-
gizes and deenergizes.
YN
Press St
op. +2
4 VDC is measured between P/J414B-3, 4, 5, 6 on the IOT Drive PWB
and GND.
YN
+24 VDC is measured between P/
J414B-1 on
the IOT Drive PWB and GND.
YN
Replace the IOT Drive PWB (PL 9.
2).
Go to Flag 1 and Fl
ag 2 on BSD 8.9 and check the harness and connectors. If the
harness and connectors are OK, replace Main Motor 2 (PL 1.5).
Press Start. Th
e voltage at P/J414B-3, 4, 5, 6 on the IOT Drive PWB goes to approx-
imately +23 VDC.
YN
Replace the IOT Drive PWB (PL
9.
2).
Replace Main Motor 2 Motor (PL 1.
5).
Check for obvious damage, missing and/or broken Drive Motor gear as
semblies and drive
belts that would cause the paper to be slow to actuate the Pre Registration Sensor.
A
A
B
B