Nikon ECLIPSE L200ND / ECLIPSE L200N Instructions Manual page 64

Trouble
Objective hits the sample
when switched from low to
high magnification.
Sample is out-focused by
objective switching.
No smooth switching of the
objectives.
Sample does not move
smooth.
Viewfields do not merge
into one when observed
with both eyes.
Eye fatigue.
Heavy coarse focus knobs.
Stage falls down by its own
weight and the image
becomes out of focus.
5 Troubleshooting
Causes
Eyepiece diopter not adjusted.
Eyepieces not mounted correctly.
Objectives attached only to the one
side of the revolving nosepiece.
Sample holder not fixed on the
stage correctly.
Interpupillary adjustment not
correctly adjusted.
Eyepiece diopter not adjusted.
Interpupillary adjustment not
correctly adjusted.
Eyepiece diopter not adjusted.
Improper brightness.
Coarse torque adjustment ring
tightened too much.
Coarse torque adjustment ring is
too loose.
50
IC Inspection Microscope ECLIPSE L200ND / L200N Instructions
Countermeasures
Adjust the diopter.
(See "3.4 Diopter adjustment".)
Mount them correctly (match
the positioning pin and the
groove.)
(See "4.8 Attaching the
eyepieces".)
Turn the nosepiece for several
times with the nosepiece
rotation buttons.
(See "4.7.2 If the objectives are
out of the optical path when
they are switched".)
Fix the sample holder correctly.
(See "4.5 Attaching the stage
and the holder".)
Adjust the interpupillary
distance.
(See "3.5 Interpupillary
distance adjustment".)
Adjust the diopter.
(See "3.4 Diopter adjustment".)
Adjust the interpupillary
distance.
(See "3.5 Interpupillary
distance adjustment".)
Adjust the diopter.
(See "3.4 Diopter adjustment".)
Adjust the brightness with the
brightness control dial, or by
placing ND filters in the optical
path.
(See "1.2 Names of the
operational parts" and "3.1
Filters".)
Adjust the torque.
(See "3.2.2 Adjusting the
torque of the coarse focus
knobs".)
Adjust the torque.
(See "3.2.2 Adjusting the
torque of the coarse focus
knobs".)