3D Systems ProX DMP 300 User Manual page 66

13 . Make sure the head-lens support contact is clean .
Mechanical stop
14 . Ensure the cleanliness of the bellows and the lens cleaner diffuser .
Bellows
Diffuser
15 . Close the head-lens assembly, making sure that the raised button is in localized contact with the head-lens support .
16 . Tighten the assembly until reaching the end stop .
Excessive tightening could damage the localized contact .
Scanner head
Mechanical stop
Tighten clamp
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3D SYSTEMS, INC. PN:80-D27 Rev.B