Driving Force Transmission Path - Lexmark W850n Service Manual

Driving force transmission path

Transport motor
The rotating force of the transport motor is transmitted through the gear and the pulley (25 tooth) to components
that need mechanical driving force as shown in the following diagram.
Vertical gear drive ASM
Gear18T
Transport
roll ASM
The driving force transmitted to the gear drives the transport roll assembly, multipurpose feeder (MPF) feed roll,
registration roll assembly, fuser assembly, and exit 1 media exit roll assembly through the clutch and gears.
The driving force transmitted to the pulley (25 tooth) drives the exit 1 media exit roll assembly through the gears.
The driving force transmitted to the fuser assembly drives the heat roll.
PC cartridge motor
The rotating force of the PC cartridge motor is transmitted through the gears to components that need a
mechanical driving force as shown in the following diagram.
The driving force transmitted to the PC cartridge drives the drum. The driving force is then transmitted to the
transfer roll assembly by direct contact with the drum.
Media transport motor
Transport/MPF idler gear 21T/21T
Transport Clutch
MPF feed Registration
roll ASM roll ASM
PC cartridge motor
Drum
Transfer roll
Pulley25T
Gear exit
Gear19T
Fuser unit Exit1 media
exit roll
ASM
ASM
Magnetic Roll
Diagnostic aids
4024-110
3-27