7-340 All Tray Broken Rap - Xerox DocuColor 12/DCCS50 Service Manual

C D
Y N
Go to the +24 VDC Power (IOT LVPS)
Go to Flag 5 on BSD 7.9 and check the harness and connectors. If the harness and
connectors are OK, replace the Tray 5 Lift Motor
Replace the IOT Drive PWB (PL 9.2).
Enter dC330 008-236 Tray 5 Paper Sensor. Press Start. Manually actuate the Tray 5 Paper
Sensor. The display changed from H to L.
Y N
+0 VDC is measured at P/J416B-8 on the IOT Drive PWB.
Y N
+5 VDC is measured at P/J146-2 on the Tray 5 Paper Sensor.
Y N
Go to Flag 6 and Flag 7 on BSD 7.9 and check the harness and connectors. If
the harness and connectors are OK, replace the IOT Drive PWB.
+5 VDC is measured between P/J146-1 and P/J146-3 on the Tray 5 Paper Sen-
sor.
Y N
+5 VDC is measured between P/J21-1 and P/J21-5 on the IOT LVPS.
Y N
Go to the +5 VDC Power (IOT LVPS)
+5 VDC is measured between P/J416B-5 on the IOT Drive PWB and
J21-5 on the IOT LVPS.
Y N
Replace the Tray 5 Paper Sensor
Go to Flag 6 on BSD 7.9 and check wires for an open circuit. If the wires are
OK, replace the IOT Drive PWB
Replace the Tray 5 Paper Sensor
Replace the IOT Drive PWB (PL 9.2).
Check/replace the following parts in the order listed until the problem is resolved. Replace any
parts that are worn, broken, binding, or missing.
• Tray 5 Paper Feed Assembly (PL 2.9)
• Tray 5 Assembly (PL 2.9)
• Wiring Harness
Status Indicator RAPs
RAP.
(PL 2.12).
RAP.
(PL 2.1).
(PL 9.2).
(PL 2.1).

7-340 All Tray Broken RAP

The IOT detected that all Paper Trays are not functional.
Initial Actions
• Refer to BSD 1.2 for the following procedure.
• Ensure the L/H Cover is securely closed.
• Ensure connectors P/J801A,
seated (PL 9.3).
• Check for crimped or broken wires to connectors on the Tray PWB
• Check the fuse on the Tray PWB
• Check the fuses on the Distribution PWB
Procedure
+5 VDC is measured between P/J800-3 and P/J800-4 on the Tray PWB.
Y N
+5 VDC is measured between P/J44-9 and P/J44-13 on the Distribution PWB.
Y N
Check the fuse on the Distribution PWB. Fuse is OK.
Y N
Replace fuse (PL
+5 VDC is measured between P/J21-1 and P/J21-5 on the IOT LVPS.
P/ Y N
Go to the +5 VDC Power (IOT LVPS)
Go to Flag 4 on BSD 1.2 and check the harness for an open circuit. If the harness is
OK, replace the Distribution PWB
Replace the IOT Drive PWB
+5 VDC is measured between P/J420A-1 and P/J420A-2 on the IOT CPU PWB.
Y N
+5 VDC is measured between P/J44-8 and GND on the Distribution PWB.
Y N
Check the fuse on the Distribution PWB. Fuse is OK.
Y N
Replace fuse (PL
+5VDC is measured between P/J21-1, 2, 3, or 4 and GND on the IOT LVPS.
Y N
Go to +5 VDC Power (IOT LVPS) RAP
Go to Flag 4 on BSD 1.2 and check for an open or short circuit.
Go to Flag 5 on BSD 1.2 and check the harness for an open circuit. If the harness is OK,
replace the IOT CPU PWB
+24 VDC is measured between P/J800-1 and P/J800-2 on the Tray PWB.
1/05
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P/J802A and P/J802B on the Tray PWB are properly
(PL
(PL 9.3) to ensure it is good.
(PL 9.3) to ensure they are good.
9.3).
RAP.
(PL 9.3).
(PL 9.3).
9.3).
(PL 9.3).
DocuColor 12/DCCS50
9.3).
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