6/02
2-232
DC1632/2240
12-350
Prelaunch Training/Review
Status Indicator RAPs
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.
YN
+24 VDC is measured between the Finisher PWB p/j (+) and Finisher PWB Chassis
(-).
YN
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.
YN
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
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