Cleaning The Leds - Lexmark C912 User Reference Manual

Cleaning the LEDs

If you are experiencing print quality problems such as voids, light streaks, or light print, you may need
to clean the LEDs inside the top cover.
Note: For instructions on opening the top cover, see
1
Complete the steps to open the top cover.
2
Remove all toner cartridges. See
CAUTION: The photodevelopers are hot! Allow the photodevelopers to cool before touching.
Warning: Exposing the photodeveloper to light for prolonged periods of time can damage it.
Do not expose the photodeveloper to light for more than ten minutes. Fingerprints
Maintenance
Removing a toner cartridge
Cleaning the LEDs
173
Opening the top cover.
for more information.