HP Indigo press 3050 User Manual page 201

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Figure 13-11. Removing the cleanness sensor mounting bracket
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Figure 13-12. Cleaning the cleanness sensor
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200 Chapter 13 Imaging oil
To remove the mounting bracket, loosen the screw which holds it, slide the bracket
toward you, and lift it up.
Clean both sensor faces on the printed circuit board.
Reinstall the cleanness sensor assembly, and tighten its mounting screw.
Release the Emergency Stop button.
Mounting screw
Sensor faces
Cotton swab
ENWW