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Idiomas disponibles
Idiomas disponibles
a. Loosen the rack stop screw (Fig. 3) with the 2mm key.
b. For the 18 series: With the fine focus adjustment (20) at mid-range, focus on specimen
slide, using only the coarse focus knob (19), firstly with the 4X objective, then with the
10X.
c. For the 28 series. Focus on specimen slide using only the coarse focus knob, firstly with
the 4X objective, then with the 10X.
d. Rotate the rack stop screw until tight enough to prevent the stage (8) rising further.
Troubleshooting
ELECTRICAL PROBLEMS
PROBLEM
The bulb does not work
The bulb flickers
IMAGE QUALITY
PROBLEM
No image.
Poor resolution.
Spots in field of view.
Uneven illumination of field
MECHANICAL PROBLEMS
PROBLEM
Does not stay in focus.
Does not stay in focus.
CAUSE
Bulb burned out.
Wrong bulb.
The bulb is not inserted correctly in
the socket.
CAUSE
Nosepiece badly positioned.
Image too bright.
Objective lens dirty.
Eyepiece lens dirty.
Specimen slide upside down.
Cover slip on specimen slides wrong
thickness.
Light too bright.
Condenser dirty.
Dirty eyepiece.
Dirty slide.
Dirty condenser.
Nosepiece not properly positioned.
Diaphragm not properly positioned.
CAUSE
The stage drops down.
The rack stop of the ascending
movement of the stage is badly
adjusted.
SOLUTION
Replace bulb.
Replace by the correct bulb.
Insert it correctly.
SOLUTION
Turn, until it clicks into position.
Reduce light intensity.
Clean objective.
Clean eyepiece.
Place slide with slip facing up.
Use 0.17mm thick cover slip.
Reduce
diaphragm aperture.
Clean condenser.
Clean eyepiece.
Clean slide.
Clean condenser.
Turn until clicks into position.
Adjust accordingly.
SOLUTION
Adjust coarse focus tension.
Readjust rack stop screw.
-9-
light
intensity
or
adjust
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