Lexmark W820 Service Manual page 271

BD1 HCF PWB↔Tray 5 Components
The following table shows the signal names for this BD:
Signal Name Description
CABI TEST Test point
CAB#DET Monitors presence of the HCF. High=Not attached. Low=Attached
SNR#TA4 Monitors paper travel between Tray 4 and Tray 3. High=Paper present. Low=Paper not
present
SNR#TA5 Monitors paper travel between Tray 5 and Tray 4. High=Paper present. Low=Paper not
present
CL$FEEDA Controls Feed Clutch
CL$FEEDB Controls Feed Clutch
FMOT$ON Switches the HCF Feed Motor. High=Motor off. Low=Motor on
FEED$RDY Status signal
CABI$TX Data signal
CABI#RX Data signal
SNR##SIZE4 Analog signal from the Tray 5 Size Sensor
SNR#NOP4 Monitors the level of paper in Tray 5
SNR#LVL4 Monitors the position of Tray 5. High=In position. Low=Not in position
MOT$LIFT4 Switches Tray 5 Lift Motor. High=On. Low=Off
CL$FEED4 Controls Tray 5 Feed Clutch. High=Off. Low=On (feed)
SNR#TAROL5 Monitors paper travel between Tray 5 and Tray 4. High=Paper present. Low=Paper not
present
4025 Options
5-23
Connector Locations