Maintenance Station Service Check - Lexmark 4090-001 Service Manual

4090-001

Maintenance Station Service Check

The maintenance station has two functions:
1. Cleans the printhead nozzles during the print operation.
2. Seals the printhead when it is not being used to prevent the
nozzles from drying.
FRU
1 Maintenance
Station Assembly
2 Wiper
3 Cap
2-7
Action
As the carrier moves to the right over the
maintenance station, a slot on the bottom of the
carrier engages a tab on the sled of the
maintenance station causing the caps to rise and
seal the printheads. Carrier movement to the left
will uncap the printheads. The wipers clean the
printhead nozzles as the carrier leaves the
maintenance station. The wipers clean the
printheads only when the carrier is moving to the
left. There should be no wiping action of the
printhead nozzles when the carrier is moving to
the right. After the cleaning operation is complete,
a tab on the maintenance station engages a tab on
the carrier, causing the wipers to lower.
Check the maintenance station for worn or broken
parts.
A worn wiper causes degraded print quality just
after a maintenance cleaning. Check for loose or
worn wiper.
A worn cap causes the printhead nozzles to dry
and clog. Check for loose or worn cap.