CK30/CK40
28
Trouble Cause Remedy Page
22
19
17
11
13
–
–
4
8
12
12
14
15
–
The light annulus and phase annulus are
not centered.
When using the CK40-SL or CK40-RPSL
center them correctly.
The objective is not compatible with
phase contrast observation.
Use one compatible with phase contrast
observation.
When the edge of the culture vessel is
viewed, the phase annulus and light an-
nulus deviate from one another.
Move the vessel until phase contrast ef-
fect is achieved. Also remove the slider
and set the aperture iris diaphragm lever
to “
”.
e) Resolution problems
· Images are not sharp.
· Contrast is wrong.
· Image details lack definition.
f ) The image is partially out of
focus.
The objective is not correctly positioned
in the light path.
Turn the nosepiece slightly until it clicks
into position.
The specimen is not correctly placed on
the stage.
Put it on the stage correctly.
The optical performance of the culture
vessel is poor (e.g., surface regularity).
Use one with good surface regularity.
2. Electric System
a) The bulb flickers and the light
intensity is unstable.
The line voltage fluctuates. Use a voltage stabilizer.
The bulb is almost burned out.
Replace it with a new one.
The power cord is not connected securely. Connect it securely.
3. Focusing
a) The coarse adjustment knob
is too diffcult to turn.
The coarse tension adjustment ring has
been tightened too much.
Loosen it appropriately.
b) The image goes out of focus
during observation.
The coarse tension adjustment ring has
been loosened too much.
Tighten it appropriately.
4. Observation Tube
a) The fields of view of the left
and right eyepieces do not
match.
The interpupillary distance is not correctly
adjusted.
Adjust it correctly.
The diopter is not corrected.
Correct the diopter according to your eye-
sight.
You are not accustomed to binocular vision. Do not try to gaze at the specimen right
after looking into the eyepieces. Instead,
look at the entire field of view. Or take your
eyes away from the eyepieces briefly and
look at something else, then look into the
eyepieces again.
To Next Page
Loading...
