Instruction Manual

25
Chapter 3 Preparation and inspection before observation
3.4 Inspecting the insertion tube
CAUTION
• Be sure to hold the insertion tube by a position on the rear of the angulation section.
Otherwise, the angulation section may be damaged.
 Inspecting the external appearance of the insertion tube
1 Check visually that the external finish of the complete length of the
insertion tube and universal cable are free of irregularities such as
deformation.
2 Check that the external covering material of the insertion tube,
other than the angulation section, is not loose.
CAUTION
• If the insertion tube is deformed, you may not be able to withdraw it from the observation
object.
• If the external material of the insertion tube is cut, take care against injury during inspection.
 Inspecting the insertion tube distal end
WARNING
• The distal end of the insertion tube may become hot due to the illumination light or the
internal heating caused by electrical parts. Touching the distal end immediately after having
turned off light source may cause burn on your skin.
1 Make sure that power is turned off.
2 If the side view mirror adapter is attached to the insertion tube, turn
the nut counter-clockwise to detach the side view mirror adapter
from the insertion tube (see “Attaching and detaching the side view
mirror adapter” (page 28)).