Lexmark W820 Service Manual page 253

BD1 MCU PWB↔Envelope PWB↔Envelope Feeder Components
The following table shows the signal names for this BD:
Signal Name Description
SNR#SIZE Analog signal from the Envelope Size Sensor. Voltage levels 0VDC~5VDC
SNR#FEED Monitors paper between Envelope Feeder and base engine. High=Paper present.
Low=No paper present
SNR#NOP Signal from No Paper Sensor
CLS#FEED Switches Envelope Feed Clutch. High=No Feed. Low=Feed
EMOT$ON Switches Envelope Feed Motor. High=Off. Low=On
ENV#DET Monitors presence of Envelope Feeder. High=Envelope Feeder not present.
Low=Envelope Feeder present
SNR#NO PAPER Monitors level of paper in the Envelope Feeder. High=No paper present.
Low=Paper present
P/S Switches the Envelope Motor
4025 Options
5-5
Connector Locations