Olympus CX21 Maintenance Manual - Page 13
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CX21 MAINTENANCE MANUAL
2-3 How to check cleaning condition
1) When a large lens is checked, look at the lens while putting it toward bright side or
breathe on the lens and observe the condition that the haze on the whole surface of
the lens disappears evenly.
Light
Dust becomes conspicuous when
looking at it with the lens
inclination changed.
2) For a small lens such as top lens of objective, check it by magnifier.
If there is a dirty part or a remained part that
is not cleaned completely, the haze of this
part will disappear slower than that of the
other part.
An eyepiece can be substituted for
magnifier by turning the eyepiece upside
down.
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INSPECTION PROCEDURE