6-277 Iiss - Dadf Communications Fault Rap; 6-300 Platen Cover Open Rap - Xerox DocuColor 12/DCCS50 Service Manual

6-277 IISS - DADF Communications Fault RAP

The Pre IPS PWB detected a communication fault between the DADF Control PWB and the
Pre IPS PWB.
Initial Actions
• Refer to BSD 3.3 in the following procedure.
• Ensure that P/J551 on the DADF Control PWB is firmly seated.
• Ensure that J543B on the communication line is firmly seated.
Procedure
PO/PO the machine. The Fault Code is still declared.
Y N
Inspect the PRE IPS PWB the MEM SYS PWB, the POST IPS PWB for loose connec-
tions or any obvious electrical/mechanical cause for malfunction.
+5VDC is measured between P/J550-5 and P/J550-6 on the DADF Control PWB.
Y N
Go to the +5VDC Power (IOT LVPS) RAP.
Go to Flag 1 on BSD 3.3 and check the wiring for an open circuit. If the wiring is OK, then
replace the DADF Control PWB (PL 12.3). If the problem continues, replace the following:
• Pre IPS PWB (PL 3.5)
• MEM SYS PWB (PL 3.5)
• Post IPS PWB (PL 3.5)
Status Indicator RAPs
6-277 IISS - DADF Communications Fault RAP, 6-300

6-300 Platen Cover Open RAP

A fault code for Platen Cover Open appears even when the Platen Cover is physically closed.
Initial Actions
• Refer to BSD 6.2 and BSD 6.7 in the following procedure.
• Check that the Platen Cover closes properly.
Procedure
Close the Platen Cover. Enter dC330 006-300 Platen Interlock Switch (IISS). Press Start.
The Display is H.
Y N
Manually actuate the Platen Open Switch. The display changes.
Y N
Disconnect P/J530. +5VDC is measured between P/J515-3 and GND on the
Pre IPS PWB.
Y N
Replace the Pre IPS PWB
Reconnect P/J530. Open the Platen Cover. The voltage at P/J515-3 goes to less
than +1 VDC.
Y N
Go to Flag 4,
circuit. If the wires are good, replace the Platen Open Switch
Check the Platen Open Switch for intermittent operation. If the switch is good,
replace the Pre IPS PWB
Open Switch (PL 3.2).
Check the Platen Open Switch for alignment and /or damage. If the Fault continues,
replace the Platen Open Switch
Open the Platen Cover The display is L
Y N
Check the Platen Open Switch for alignment and /or damage. If the Fault continues,
replace the Platen Open Switch
Check the Platen Open Switch for alignment and /or damage. Go to
and check the wires for an open or short circuit. If the wires are OK, replace the Platen Open
Switch (PL 3.2).
1/05
2-54
manuals4you.com manuals4you.com
(PL 3.5)
Flag 5, and Flag 6 on BSD 6.2 and check the wires for an open
(PL 3.5). If the problem continues, replace the Platen
(PL 3.2).
(PL 3.2).
Flag
(PL 3.2).
4, Flag 5, on BSD 6.2
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DocuColor 12/DCCS50