Lexmark W850n Service Manual page 153

Media transport path layout
The following is a cross section of the laser printer, showing main components directly associated with the
media path and transport.
Main components associated with transport of media
Exit 2
Duplex
Duplex media
transport roll
ASM
Duplex media
center transport
roll ASM
Duplex media
transport pinch roll
Duplex media
transport roll
ASM
MPF pick roll
MPF
MPF Transport
pinch roll
MPF Transport
roll ASM
Media transport
pinch roll
Transport
roll ASM
Separation roll
Tray 4 transport roll ASM
Exit 2 media exit roll ASM
Exit 2 media exit pinch rolls
Exit 2 media transport roll ASM
Exit 1 media exit roll ASM
Exit 1 media exit pinch rolls
Pressure roll
TRAY 4
TRAY 3
4024-110
Heat Roll
Transfer roll ASM
Drum
Registration pinch
roll
Registration roll
ASM
Pick roll
Feed roll
(TTM)
Tandem tray
3-29
Diagnostic aids