
Instructions to assemble and install
Edition E0
Page 67 of 69
Confidential and Property of CoeLux S.r.l.
9.2.4.2
DEFECTS IN THE GLASS SURFACE
DEFECT
PHOTOS
ACCEPTABILITY
Thick dirt: very
opaque glass
surface
Case C
Widespread dirt:
surface with an
opaque layer visible
without the help of
the projector
Case C
Ring marks: more
or less opaque
areas on the glass
surface due to
various types of dirt
Case B
(if they do not
disappear
Case C
)