FujiFilm EG-580UR Operation Manual page 62

Chapter 3 Preparation and Inspection Before Use
(5) Make sure that the lamp is turned off.
Be sure that the objective lens and light guides on the distal
end of the ultrasonic endoscope are fixed correctly. Look the
distal end from an angle to check no dirt or foreign substances
adhering to the objective lens.
[Note]
Check that the objective lens and its surroundings are free
from cracks.
Also, check the following:
• The cover of the distal end is securely fixed.
• The light guides are free from cracks and are securely
fixed.
• The air/water nozzle is free from cracks and crushes and
is securely fixed.
• The side surface of the distal end is free from scratches,
peeling and abnormal bulging.
[Note]
If the distal adhesives are missing, peeling, deteriorated
or if any lens is damaged or missing, contact your local
FUJIFILM dealer.
(6) If the objective lens and the light guides are dirty or
stained, thoroughly clean them.
[Note]
To clean the objective lens and the light guides, wipe them
with sterile gauze (or something similarly soft) dampened
with lens cleaner (optional) or ethanol.
[Note]
Use lint-free sterile gauze to prevent fibers from entering
the air/water nozzle.
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