26
Problem
Cause
Remedy
Page
1. Even though the
main switch is set to
" " (ON), the mercury
burner does not
ignite.
The power cord or connectors are not
connected firmly.
Connect the power cord or connectors
firmly.
-
The mercury burner is not attached.
Attach a mercury burner.
41
The safety device in the mercury lamp
housing is active.
Set up the socket part of the lamp housing
correctly.
41
The auto ignition is malfunctioning.
Set the main switch of the power supply
unit to " " (OFF), and set it to " " (ON) again.
(ON / OFF can be repeated.)
-
2. The mercury burner
lights up. However,
the image of the
specimen cannot be
obtained through the
eyepiece, or it is dark.
The objective is not correctly engaged in
the light path.
Engage the objective in the light path
correctly.
16
The fluorescence mirror unit is not properly
engaged in the light path.
Engage the fluorescence mirror unit in the
light path correctly.
16
The shutter for reflected light illumination or
the attenuator filter is engaged in the light
path.
Engage the empty hole of the filter slider for
reflected light illumination in the light path.
16
The fluorescence mirror unit in use does not
match the specimen.
Use the fluorescence mirror unit matching
the specimen.
24
3. The mercury burner
flickers or it is dark.
Not enough time has passed after igniting
the mercury burner.
Wait for 10 minutes or more after ignition.
15
The mercury burner has reached the end
of its life.
If the hour counter indicates 300 hours or
more, replace the mercury burner.
41
4. The image is poor.
• The contrast of the
image is low.
• The resolution of the
image is poor.
• The image blurs.
The container is fogged.
Eliminate the fog.
-
The objective or the filter is dirty.
Clean the objective or the filter.
5
The field iris diaphragm is not adjusted
appropriately.
Adjust the field iris diaphragm until its
image circumscribes the field of view.
21
The umbra shield (ambient light shielding
plate) is not engaged in the light path.
Engage the umbra shield in the light path.
15
The appropriate objective is not being used. Change to UIS2 series objectives suitable
for the observation method.
30
The correction collar of the objective with
correction collar is not adjusted.
Adjust the correction collar of the objective
with correction collar according to the
thickness of the container or the depth of
the specimen you want to observe.
21
The combination of the fluorescence mirror
unit and the objective is not correct.
Select the correct combination.
30
5. A part of the field of
view is not visible
or is dark. Or, the
brightness of the field
of view is not even.
The fluorescence mirror unit is not properly
engaged in the light path.
Engage the fluorescence mirror unit in the
light path correctly.
16
The direction of the filter slider for reflected
light illumination which is inserted to the
fluorescence illuminator is not correct.
Set the direction of the filter slider for
reflected light illumination correctly.
37
The filter slider for reflected light illumination
is not correctly engaged in the light path.
Engage the empty hole of the filter slider for
reflected light illumination in the light path.
16
The centering of the mercury burner is not
performed.
Adjust the centering of the mercury burner.
43
The focal point of the collector lens is
shifted.
Adjust it to the correct position.
44
The objective is not correctly engaged in
the light path.
Engage the objective in the light path
correctly.
16
5-2 Fluorescence observation