47
Preparation and inspection
3
Note
If the image is not clear, gently clean the endoscope objective lens with clean gauze moistened
with 70% – 90% medical grade ethyl or isopropyl alcohol.
6. On the touch panel of the video processor, check that the exposure control is set to [Average] or [Peak].
7. Place the distal end of the endoscope at a distance of approximately 1 cm from the palm of your hand
and then move it approximately 5 cm away from your palm. Watch the image displayed on the monitor
to ensure that the brightness at both distances is similar.
Figure 3.47
Caution
Do NOT directly touch the distal end of the endoscope (particularly the light guide) for a prolonged
period of time when the light is being emitted. Doing so may result in burn injury.
8. While checking the image displayed on the monitor and following the IFU of the video processor,
adjust the brightness level as appropriate.
9. Operate the angulation control knobs of the endoscope to move the bending section, and check that
the image is traveling along with the direction of the angulated distal tip of the endoscope. Also check
for abnormalities such as appearance of noise in the endoscopic image or disappearance of the image.
Figure 3.48
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