Topcon TRC-50DX, Инструкция по эксплуатации

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67
OPTIONAL ACCESSORIES
ACCESSORY LENS CLEANING METHODS
Dust or other impurities adhering to the lens, which is seen in the mount, may be reflected in
the retinal images photographed. In the presence of such impurities, the lens must be cleaned
according to the methods specified below.
Cleaning the outer side of the lens:
1
Blow off dust or other impurities with a hand blower.
2
If stain is persistent, wipe it off with a lens cleaner.
a) Prepare a mixed solution at the ratio of 2 (ethyl alcohol) to 8 (ether).
b) Moisten a clean gauze (already washed and dried) with the mixed solution. By using
this gauze, gently wipe the lens in a circular direction from its center to outside.
c) If stain still remains, wipe the lens repeatedly.
If you wipe or rub the dirty lens violently, its surface will be damaged. During cleaning, be
careful not to damage the mask.
Cleaning the inside of the lens:
1
Loosen the machine screws (3 pcs.) from the mount and pull the mount straight out in the
arrow direction.
In the case of the TV relay lens adapter, one of the three machine screws is located inside
the side cover.
2
Blow off dust or other impurities with a hand blower or wipe it with a lens cleaner.
When cleaning the TV relay lens adapter, the cover glass on the lens must be cleaned.
3
Reinstall the mount.
Insert the mount straight, so that the mount positioning pin aligns with the slot. Tighten the
machine screws.
Side cover
Mount
Mask
Lens
Screw
Mount positioning pin
Slot