4
c.
To clean eyepiece lenses, do not remove from eyepiece tube. Clean only the outer lens surface.
Breathe on lens to dampen surface, then wipe with lens paper or use a cotton swab
moistened with distilled water. Wipe lenses with a circular motion, applying as little pressure as
possible. Avoid wiping dry lens surface as lenses are scratched easily. If excessive dirt or grease
gets on lens surfaces, a small amount of Windex can be used on a cotton swab or lens tissue. To
clean objective lenses, do not remove objectives from microscope. Clean front lens element only,
following same procedure.
2.
Mechanical Maintenance
The only mechanical adjustment the microscope might require is the tension of the focusing mechanism.
This has been adjusted at the factory, but over the course of time it may loosen and cause the head of the
microscope to slip downward on the focusing block.
The tension adjustment collar is located between arm and focus knob on left side of microscope when the
stage is facing towards you. With a jewelers type screwdriver, loosen slotted set screw located on knurled
surface of the tension adjustment collar. Turn collar clockwise to tighten tension, counter-clockwise to
loosen tension. After adjusting, tighten set-screw to lock collar into place.
NOTE: It is recommended that you leave the tension as loose as possible for ease of focusing, yet not so
loose that it permits the head of the microscope to drift downward from its own weight and cause the
microscope to “drift” out of focus.
TROUBLESHOOTING
Problem
Reason for Problem
Solution
Light Fails to Operate
Outlet inoperative
AC Power Cord not Connected
Lamp Burned Out
Fuse Blown
Have qualified service technician repair
outlet
Plug into outlet
Replace Lamp
Replace Fuse
Adjust tension control
Clean Objective Lenses
Clean Eyepiece Lenses
Clean Eyepiece Lenses
Image does not remain in
focus
Head of microscope drops from its own weight
Objective lenses dirty
Eyepiece lens dirty
Eyepiece lens dirty
Poor Resolution
(Image not sharp)
Spots in field of View
***Spots in field of view can also result from dirt on inside of eyepiece. It is recommended that you have a
service technician clean inside of lens
