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Chapter 3 Preparation and inspection before observation
6.2-mm type (with channel)
The O-ring on the 6.2-mm type is on the distal end of the scope.
On the 6.2-mm type, if the o-ring is not present then the area is colored yellow
and will therefore be visible.
CAUTION
• On the 6.2-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.
Inspecting the control unit and the universal cable
1 Check for irregularities such as damage or deformation to the
external material, buttons, joysticks, and levers.
2 Ensure that the universal cable is free of irregularities such as cuts
and buckling.
O-ring
[BRT] lever
[ZOOM] lever
[FRZ/REC] button
(two located on the left and
right sides)
[ANGLE LOCK] lever
[ANGLE] joystick
Universal cable
[VIEW] button
[MEAS/ENTER] joystick
[LIVE/GAIN] button
[MENU/EXIT] button
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