Xerox DocuColor 12/DCCS50, Service Manual

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1/05
8d-57 DocuColor 12/DCCS50
12-580
Finisher/Sorter
Reissue
12-580 RAP
This fault is declared if Control Logic detects the Unload While Run Switch activated while a job
is being printed.
Initial Actions
Refer to BSD 12.2 for this procedure.
Ensure that connectors P/J1039 on the Finisher PWB and P/J1075 on the Unload While Run
Switch are seated correctly and there are no obvious crimped or broken wires.
Procedure
The Unload While Run LED is always lit.
Y
N
Press the Unload While Run Switch several times. The Unload While Run LED
switches on and off.
Y
N
Enter dC330 012-291 Unload While Run Switch. Press Start. Press the Unload
While Run Switch several times.
The display alternates from High to Low.
Y N
Disconnect P/J1075 from the Unload While Run Switch. There is +5VDC
from J 1075-3 to GND
Y
N
Go to Flag 4 on BSD 12.2. Check for a short circuit to GND. If the wire is
OK, replace the Finisher PWB ( PL 18.4 ).
Go to Flag 4 on BSD 12.2. Check for an open circuit. If the wire is OK, replace
the Unload While Run Switch ( PL 18.15 ).
There is +5 VDC from P/J1075 -1 to GND.
Y N
Go to Flag 6 on BSD 12.2. Check for an open circuit. If the wire is OK, replace
the Finisher PWB ( PL 18.4 )
Enter dC330 012-099 Unload while Run LED. Press Start There is less than 1
VDC from P/J1075 -2 to GND.
Y N
Go to Flag 5 on BSD 12.2. Check for an open circuit. If the wire is OK, replace
the Finisher PWB ( PL 18.4 ).
Replace the Unload While Run Switch ( PL 18.15 ).
Enter dC330 012-291 Unload While Run Switch. Press Start. Press the Unload While
Run Switch several times.
The display alternates from High to Low.
Y N
Disconnect P/J1075
from the Unload While Run Switch.There is +5VDC from J
1075-3 to GND
Y
N
Go to Flag 4
on BSD 12.2. Check for a short circuit to GND. If the wire is OK,
replace the Finisher PWB ( PL 18.4 ).
Go to Flag 4 on BSD 12.2. Check for an open circuit. If the wire is OK, replace the
Unload While Run Switch ( PL 18.15 ).
The problem may be intermittent. Go to Flag 3 , Flag 4 , Flag 5 , and Flag 6 on BSD 12.2.
Check for an intermittent short circuit or a loose connection. If the problem is unresolved,
replace the Unload While Run Switch (
PL 18.15 ).
Enter dC330 012-099 Unload while Run LED. The LED remains lit.
Y N
Go to Flag 4 on BSD 12.2. Check for a short circuit to GND. If the wire is OK, replace the
Unload While Run Switch ( PL 18.15 ). If the problem is unresolved, replace the Finisher
PWB ( PL 18.4 ).
Go to Flag 4 on BSD 12.2. Check for an open circuit. If the wire is OK, replace the Unload
While Run Switch ( PL 18.15 ).
Go to Flag 5 on BSD 12.2. Check for a short circuit to GND. If the wire is OK, replace the Fin-
isher PWB ( PL 18.4 ).
A
A
B
B
C
C