Lexmark W820 Service Manual page 37

16.
Fuser Exit Sensor
Monitors paper travel out of the Fuser.
17.
Face Up Exit Sensor
Monitors paper travel out of the Offset Unit.
18.
Full Stack Sensor
Monitors the paper level in the Output Tray.
19.
Exit Gate Solenoid
Toggles the Exit Gate.
20.
Inverter CW Clutch
Transmits Main Motor drive, forward, to the Offset Rolls.
21.
Inverter CCW Clutch
Transmits Main Motor drive, reverse, to the Offset Rolls.
22.
Offset Motor
Provides mechanical drive for the Offset Unit.
23.
Duplex Module PWB
Provides +5VDC, +24VDC, and command and status lines to the Duplex PWB
option.
24.
Mailbox
Provides +5VDC, +24VDC, and command and status lines to the Mailbox option.
25.
Finisher
Provides +5VDC, +24VDC, and command and status lines to the Finisher option.
26.
Envelope Feeder
Provides +5VDC, +24VDC, and command and status lines to the Envelope Feeder
option.
27.
Cabinet Drive PWB
Provides +5VDC, +24VDC, and command and status lines to the High Capacity
Feeder option.
28.
Size Sensor 1
Monitors the size of the paper that is loaded in Feeder 1. The Actuator Assembly
located at the rear of the Paper Tray has a series of cams that face the Size Sensor
PWB. Pushing the Paper Guide against the paper stack slides the Actuator
Assembly along a track. When the Tray is inserted into the Feeder, the cams on the
Actuator press the switches on the Size Sensor PWB in a pattern that is unique to
the position of the Paper Guide. The MCU PWB interprets this pattern as a specific
paper size.
4025-XXX
1-19
General Information