Nidek Medical AFC-330, Руководство оператора

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MAINTENANCE : Cleaning Objective Lens
4
4.3 Cleaning Objective Lens
Clean the objective lens if it is dirty from contact with eyelashes, teardrops, fingerprints, or other
causes.
Even slight dust or fingerprints may deteriorate the captured image. It is recommended to check the
objective lens each time before using the camera and clean it if necessary.

Check whether the cleaning objective lens is clean with the procedure below.
1
Pull the infrared filter lever to remove the infrared filter inside the device so that visible
light is emitted.
A message “Would you like to clean the objective lens?” appears.
2
Press “YES”.
A message “Please set the Observation Illumination to Min.” appears.
3
Set the observation light intensity to the minimum.
4
Press “OK”.
A message “Please clean the objective lens while adjusting the light intensity. Please place the
infrared filter back after cleaning the objective lens.” appears.
5
Clean the objective lens in the method below in accordance with the message.
Cleanliness of the objective lens can be observed clearly by looking at the objective lens at an
angle while gradually increasing the observation light intensity from the minimum using the obser-
vation illumination intensity knob.
1) Remove the dust settled on the surface of the objective lens.
Blow the dust off the lens with a blower.
2) If the surface of the objective lens is contaminated, gently wipe the lens with a clean swab or the
equivalent dampened with a little amount of alcohol (absolute alcohol).
Starting from the center of the lens, gently wipe the lens by moving the swab outward in a spiral.
If the lens is still contaminated, use a new swab and repeat the above process until the lens is
clean.
3) When the cleaning is finished, push the infrared filter lever into the device.
The cleaning is complete.
CAUTION
• Do not wipe the objective lens forcibly or when dust is present.
The lens surface may be scratched.