Finisher Communication - Xerox DocuColor 2240 Service Manual

12-350 Finisher Communication

Communication cannot be established between the MCU PWB and the Finisher PWB.
Procedure
Switch the power off then on. CR7 on the Finisher PWB is lit.
Y N
+24 VDC is measured between the Finisher PWB P/J844-2 and ground.
Y N
Check the +24VDC circuit to the Finisher PWB
ing Data Finisher +24VDC.
Replace the Finisher PWB (PL 17.13).
Switch off the power. Check resistance of the following: (Including the I/F)
• Between the MCU PWB P/J403-B13 and the Finisher PWB P/J843-3
• Between the MCU PWB P/J403-B12 and the Finisher PWB P/J843-4
• Between the MCU PWB P/J403-B15 and the Finisher PWB P/J843-1
• Between the MCU PWB P/J403-B14 and the Finisher PWB P/J843-2
Is the resistance 1 Ohm or less for all wires.
Y N
Check wires with more than 1 Ohm for an open circuit or poor contact.
Replace the following parts:
• Finisher PWB (PL 17.13).
• MCU PWB (PL 13.1).
Status Indicator RAPs
12-350
P/J844 by referring to Chapter 7 Wir-
02/03
2-278
Initial issue
DC 3535/2240/1632