Lexmark W820 Service Manual page 343

BD18 I/O PWB↔MCU PWB (7 of 7)
PWBA MCU(7/7)
BD18 I/O PWB↔MCU PWB (7 of 7)
The following table shows the signal names for this BD:
Signal Name
CL#ICCW
CL#ICW
OPT#DET
OPT$TX+
OPT$RX+
4025-XXX
P/J402
5VRTN
14
5VRTN
27
5VRTN
34
5VRTN
39
P/J403
CL#ICCW
11
OPT$TX+
12
5VRTN
16
5VRTN
18
OPT#DET
22
OPT$RX+
23
CL#ICW
24
Description
Switches the Inverter CCW Clutch. 24V=On. 0V=Off
Switches the Inverter.CW Clutch.5V=Off. 0V=On
Monitors options connected to the IOT. 5V=No connection. 0V=Connection
Paper feed signal sent from the option to the IOT
Paper feed signal sent from the IOT to the option
PWBA I/O
P/J452
BLK
7
BLK
34
BLK
27
BLK
22
P/J453
BLK
7
BLK
6
BLK
2
BLK
34
BLK
30
BLK
29
BLK
28
Connector Locations
5-37