1/05
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DocuColor 12/DCCS50
14-372 ROS Motor Fail RAP, 14-376 Half Tone PWB
Status Indicator RAPs
Reissue
14-372 ROS Motor Fail RAP
The SOS Sensor did not go Low within a specified time after the Polygon Motor energized.
Initial Actions
• Refer to BSD 6.5, BSD 6.6, and BSD 6.7 in the following procedure.
• Verify that the Drum Unit is firmly seated and that the screws that hold the unit in place
are inst
alled.
• Verify that P/J420
A on the lOT Drive PWB, and P/J399 AND P/J395 on the Half Tone
PWB are firmly connected.
Procedure
Open the Front Door and cheat the Interlock. Enter dC330 014-050 Polygon Motor Low Speed.
Press Start. When the Polygon Motor rotates you can feel vibrations by placing your hand on
the Drum Module Cover. The Polygon Motor is rotating.
YN
Press Stop. There is approximately 3.5 - 5.0 VDC between P
/J420A-B16 o
n the IOT
Drive PWB and GND.
YN
Switch off the power. Go to F
lag 1
on BSD 6.6 and check for an open circuit or a
short to GND. If the wires are OK, replace the ROS Assembly (PL 4.1).
Enter dC330 014-050 Polygon Motor Low Speed. Press Start. +0.0 - +1.5 VDC is mea-
sured between P/J420
A-B16 on the IOT Drive PWB and GND.
YN
Go to Fl
ag 1 on B
SD 6.6 and check for an open circuit or a short to GND. If the wires
are OK, replace the IOT Drive PWB (PL 9.2).
There is +24 VDC from P/J420A-B14 to
P/J420-B15 on the IOT Drive PWB.
YN
Go to the +24 VDC Wirenets (Fi
gu
re 5) and troubleshoot the 24 VDC circuits.
Go to Flag 5 on B
SD 6.6. Check for an open circuit or a short to GND. If the wires are OK,
replace the ROS (PL 4.1). If the problem continues, replace the IOT Drive PWB (PL 9.2).
Switch on the power. +5 VDC is measured between P/J39
9-1 and P/J399-3 on the Half-
Tone PWB.
YN
+5 VDC is measured between P/
J3
95-1 and P/J395-3 on the Half-Tone PWB.
YN
Go to the +5 VDC Wirenets (Fi
gu
re 1) and troubleshoot the 5 VDC circuits.
Replace the Half Tone PWB (PL 9.
2)
Switch off the power. Go to Flag
1 and Flag 2 on BSD 6.5 and check for an open circuit. Go to
Flag 2 on BSD 6.6 and check for a short to ground. If the wires are OK, replace the following:
• lOT Drive PWB (PL
9.
2).
• ROS Assembly (PL 4.
1).
14-376 Half Tone PWB Fail RAP
The System wrote data in the Asic Register on the Half Tone PWB, but could not read the data.
Initial Actions
PO/PO the machine. If the Fault continues, perform the following.
• Refer to BSD 6.5, BSD 6.6, and BSD 6.7 in the following procedure:
• Ensure that P/J398 on t
he Half Tone PWB is seated properly.
• Ensure that P/J345 and P/J341
on the LDD PWB are seated properly.
•Go to Flag 2
and Flag 3 on BSD 6.5 and check the wires for damage or an open or short
circuit.
• Check for other Chain 14 faults. Troubleshoot those faults first.
Procedure
Open the Front Door and cheat the Interlock. Enter dC330 014-050 Polygon Motor Low Speed.
Press Start. When the Polygon Motor rotates you can feel vibrations by placing your hand on
the Drum Module Cover. The Polygon Motor is rotating.
YN
Go to the 14-372 R
OS
Motor Fail RAP.
+5VDC is measured between P/J342
-1 and P/J342-3 on the ROS Assembly.
YN
Go to Fl
ag 3 and
Flag 4 on BSD 6.6. Check the wires for an open or short circuit. If the
wires are OK, replace the Half Tone PWB (PL 9.2).
+5VDC is measured between P/J399
-2 and gnd.
YN
Go to F
lag 2 on BSD 6.6. Check the wires for an open or short circuit
. If the wires are OK,
replace the Half Tone PWB (PL 9.2).
Go to Flag 2 and F
lag 3 on BSD 6.6. Check the wires for an open or short circuit. If the wires
are OK, replace the ROS Assembly (PL 4.1). If the problem persists, replace the IOT CPU
PWB (PL 9.2).
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