Lexmark WinWriter 150c Service Manual - Page 18

Maintenance Station Service Check, Seals the printhead when it is not being used to prevent

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4077-001 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 Action 1 Maintenance Station Assembly 2 Wiper 3 Cap 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 slot 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. 9

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9
4077-001
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
Action
1
Maintenance
Station Assembly
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 slot
on the carrier, causing the wipers to lower.
Check the maintenance station for worn or broken
parts.
2
Wiper
A worn wiper causes degraded print quality just
after a maintenance cleaning. Check for loose or
worn wiper.
3
Cap
A worn cap causes the printhead nozzles to dry
and clog. Check for loose or worn cap.