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10-155
DocuColor 12/DCCS50
Finisher Power, Finisher Interlocks
Principles of Operation
Reissue
Finisher Power
The Finisher requires +5VDC and +24VDC for normal operation. The Finisher receives these
voltages from the Distribution PWB in the IOT (Figure 1).
The Finisher PWB uses these voltages to run internal logic,
sensors, solenoids, and the Fin-
isher Motors. The Distribution PWB +24VDC output is con
trolled by the Decurler Door Inter-
lock, the Stapler Door Interlock, the Compiler Cover Interlock, and the Mailbox Door Interlock
switches. T
he +24VDC from the Distribution PWB is cut whenever any of these door interlocks
are opened.
Figure 1 DC Power Circuits
Finisher Interlocks
The interlocks on the doors of the Finisher have two circuits, a +24VDC circuit and a +5VDC
circuit. Generally speaking, the +24VDC side of the interlock is used to interrupt Finisher power
when a door is opened, and the +5VDC side of the interlock controls interlock fault declaration.
The door interlocks work by interrupting power to the finisher. When a door is opened, the
+24VDC side of
t
he switch is opened and the finisher functions that use +24VDC are shut
down. The +5VDC side of the interlock is also opened, resulting in a fault declaration (Figure
1).
The Docking Interlocks are located on the left side of the Finisher assembly. These are mag-
netic interlocks that are held open when the Finisher is docked. When the Finisher is
undock
ed, t
he switches will close, completing a path to ground. The resulting drop in voltage is
sensed on the Finisher PWB, and will result in an indication that the Finisher is undocked.
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