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Chapter 3 Preparation and inspection before observation
6-mm type
The O-ring on the 6-mm type is on the distal end of the scope.
On the 6mm type, if the o-ring is not present then the area is colored yellow and
will therefore be visible.
CAUTION
• On the 6-mm type, if the O-ring is cut, nicked or shows any abnormality, put silicon grease on
the spare O-ring provided with the optical adapter and replace the abnormal O-ring with the
spare O-ring. You should periodically replace the O-ring.
4-mm type
The O-ring on the 4-mm type is in the optical adapter.
CAUTION
• Since user inspection of the 4 mm type is difficult you should have it inspected periodically by
Olympus.
O-ring
O-ringNut
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