Lexmark T420 Printer User Manual


 
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Cleaning the printhead lens
You can solve some print quality problems by cleaning the printhead lens.
1 Turn the printer off.
2 Open the upper front door and the multipurpose feeder door.
3 Remove the print cartridge. See Replacing the print cartridge.
4 Locate the glass printhead lens.
5 Gently wipe the printhead lens with a clean, dry, lint-free cloth.
6 Reinstall the print cartridge.
7 Close the upper front door, and then the multipurpose feeder door.
8 Turn the printer on.
Printhead lens