Nikon ECLIPSE Ei User Manual

Chapter 5 Troubleshooting
65
Image too bright
Problems Check Items
Setting of the brightness control knob
 Adjust the brightness by rotating the brightness control
knob.
Insufficient brightness
Problems Check Items
Setting of the brightness control knob
 Adjust the brightness by rotating the brightness control
knob.
Aperture diaphragm is closed too far.  Open properly. (→ Section 3.5)
Darkness at the periphery, no viewfield seen, or uneven viewfield brightness
Problems Check Items
Revolving nosepiece is not in click-stop
position. (the objective is not centered in the
optical path).
 Revolve to click-stop position (swing the objective
correctly into the optical path).
Dirt or dust on the lens (condenser, objective,
field lens, eyepiece), specimen
 Clean dirt and dust. (→ Section 6.1)
Image dark on one side
(One side of the viewfield (up, down, right, or left) is not focused.)
Problems Check Items
Revolving nosepiece is not in click-stop
position.
 Revolve to click-stop position.
Specimen rises from stage surface.  Stabilize it using the holder.
The thickness of the sample (section) is not
uniform and has a tilt.
 Prepare a sample (section) of uniform thickness.
Image shifts during focus
(Becomes asymmetrically defocused when moving the focal point.)
Problems Check Items
Revolving nosepiece is not in click-stop
position.
 Revolve to click-stop position.
Specimen rises from stage surface.  Stabilize it using the holder.
The thickness of the sample (section) is not
uniform and has a tilt.
 Prepare a sample (section) of uniform thickness.

Nikon ECLIPSE Ei Specifications

General

Brand	Nikon
Model	ECLIPSE Ei
Category	Microscope
Language	English