Drive Motor - Lexmark X850e Service Manual

Layout of media transport path
The following figure illustrates the main components directly associated with the media path and transport with
the exit 2 installed.
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
Functions of Main Components

Drive motor

The drive motor is a stepping motor driving the transport roll assembly and media exit roll assembly. Forward
rotation of this motor drives these rollers to feed media to the exit 2 standard bin. Reverse rotation of this motor
drives the transport roll assembly to feed media to the duplex.
Media shift motor
The media shift motor is a stepping motor moving the media exit roll assembly frontward or rearward. Forward
rotation of this motor moves the media exit roll assembly to the front side. Reverse rotation of this motor moves
it to the rear side.
Separation roll
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
S
7500-XXX
Heat Roll
Transfer roll ASM
Drum
Registration pinch
roll
Registration roll
ASM
Pick roll
Feed roll
(TTM)
Tandem tray
1-71
General information