19
STEINDORFF
®
6.1.
Optical Part
PROBLEM
REASON FOR PROBLEM
SOLUTION
Bulb lights but the field of
view is dark.
The aperture or field iris diaphragm is closed.
Open the aperture and field iris diaphragms.
Analyzer and polarizer are engaged in light
path.
Disengage them from light path.
Light path selector knob of trinocular tube is
positioned halfway.
Fully pull out the light path selector knob.
Mirror selector lever is in an intermediate
position
Set the knob correctly.
Field of view is obscured or
not evenly illuminated
Light path selector knob of trinocular tube is in
positioned halfway.
Set the light path selector knob to a click
position according to the purpose.
Mirror selector lever is in an intermediate
position.
Set the knob correctly.
Revolving nosepiece is not in a click position.
Set it in a click position.
Field iris diaphragm is not centered.
Center the field iris diaphragm correctly and
open it sufficiently.
ND filter is not in a click position.
Set it in a click position.
Lamp bulb is not installed correctly.
Push halogen bulb terminals all the way into
stop position.
Analyzer and/or polarizer not installed
correctly
Engage analyzer and polarizer in light path.
Dirt or dust is visible in the
field of view.
Dirt/dust on eyepiece
Clean thoroughly.
Dirt/dust on specimen
The image is defocus\low-
resolution
Revolving nosepiece is not in a click position.
Set it in a click position.
The surface of the objective lens is moldy or
has contaminant
Clean thoroughly.
Dirt/dust on specimen
One side of image is blurred.
Objective is not correctly engaged in light path.
Make sure that revolving nosepiece clicks into
place correctly.
6.
TROUBLESHOOTING
