Finisher Service Check - Lexmark C920 Service Manual

5056-XXX

Finisher service check

FRU
1 • Input path sensor
• Paper register sensor
• Upper tray exit sensor
• Guide stack assembly
• Paper full A sensor
• Paper detect sensor
• Staple home position
sensor
• No staple sensor
• Punch box detect
sensor
• Invert path sensor
• Lower tray exit sensor
• Elevator upper limit
sensor
• Tray near full sensor
• Elevator lower limit
sensor
• Jogging assembly
• Pap. upper level sensor
• Fin. set switch sensor
• Staple cart. set sensor
2 • Timing belts
• Patting roller
• Path select solenoid
• Path select gate
• Guide stack assembly
• Jogging unit assembly
• Tractor drive assembly
• Stapler
3 • Registration roller
• Paper exit rollers
• Registration sensor
• Registration clutch
• Punch clutch punch unit
• Timing belt
4 • Elevator motor
• Tray wires
2-54
Service Manual
Action
Note: For frequent jams, hole punch problems, or stapling
problems, first check the finisher to printer alignment. Go to
"Aligning the finisher and printer" on page
Run the finisher sensor test in diagnostic mode to test the sensors
and switches.
Run the staple test in diagnostic mode to test feeding and stapling
function.
Run the hole punch test in diagnostic mode to test the hole punch
function.
Observe the elevator motor operation while powering the printer
up.
3-59.