Topcon TRC-50DX, Инструкция по эксплуатации

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CLEANING
• When the stain is persistent:
1
Moisten a lens cleaning paper with reagent ethanol properly. Wipe the objective lens with
the lens cleaning paper by rubbing lightly.
2
If your lens cleaning paper is dirty, replace it with clean one and repeat step
1
.
3
Repeat steps
1
and
2
until no stain is seen on the lens.
4
Finally, wipe the objective lens with a dry lens cleaning paper which is not moistened with
solvent until it is clean. It is permitted to wipe the lens after breathing on it.
Don't use the following methods because the lens can be damaged.
• Wiping the lens by grasping with fingernails
• Using a lens cleaning paper wound around a hard tool (for example, a metallic tool)
Use a soft lens cleaning paper without fiber.
• For example, BEMCOT (Asahikasei)
Don't let any strong-alkaline liquid adhere to the objective lens.
If such liquid adheres to the lens, immediately wipe it off.
If it is difficult to remove a stain from the objective lens, contact your dealer or TOPCON
(see the back cover).
CLEANING THE LENS WHICH IS SEEN IN UPPER MOUNT
Dust or other impurities adhering to the lens, which is seen in the mount, may be reflected in
the retinal images photographed. In this case, clean the lens by the following method.
Cleaning the outside of lens
1
Blow dust or other impurities using a blower.
2
If stain is persistent, wipe the lens with a lens cleaner.
a) Prepare a mixed solution with a ratio of 2 (ethyl alcohol) to 8 (ether).
b) Moisten a clean gauze (already washed and dried) with this 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
If the inside of the lens is stained, remove the shading compensation cover screw with a
slotted screwdriver. Remove the shading compensation cover and then clean the lens.