Xerox DocuColor 1632 Service Manual page 262

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/j (+) and Finisher PWB Chassis
(-).
Y N
Check the +24VDC circuit to the Finisher PWB p/j by referring to Chapter 7 Wiring
Data ( Finisher +24VDC-1)
Replace the Finisher PWB (PL 17.13).
Switch off the power.
Check conductivity of the following:
(Including the I/F)
ï Between the MCU PWB p/j and the Finisher PWB p/j
ï Between the MCU PWB p/j and the Finisher PWB p/j
ï Between the MCU PWB p/j and the Finisher PWB p/j
ï Between the MCU PWB p/j and the Finisher PWB p/j
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:
ï Finisher PWB (PL 17.13).
ï MCU PWB (PL 13.1).
Figure 1 Finisher PWB
Status Indicator RAPs
12-350
6/02
2-232
Prelaunch Training/Review
DC1632/2240