Xerox DocuColor 12/DCCS50, Service Manual

Page: 90 / 1617

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DocuColor 12/DCCS50
6-277 IISS - DADF Communications Fault RAP, 6-300
Reissue
Status Indicator RAPs
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 )
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 ( PL 3.5 )
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
, Flag 5 , and Flag 6 on BSD 6.2 and check the wires for an open
circuit. If the wires are good, replace the Platen Open Switch ( PL 3.2 ).
Check the Platen Open Switch for intermittent operation. If the switch is good,
replace the Pre IPS PWB (
PL 3.5 ). If the problem continues, replace the Platen
Open Switch ( PL 3.2 ).
Check the Platen Open Switch for alignment and /or damage. If the Fault continues,
replace the Platen Open Switch (
PL 3.2 ).
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 (
PL 3.2 ).
Check the Platen Open Switch for alignment and /or damage. Go to Flag 4 , Flag 5 , on BSD 6.2
and check the wires for an open or short circuit. If the wires are OK, replace the Platen Open
Switch (
PL 3.2 ).
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