Chapter 6 Troubleshooting
6.2 Electrical
65
6
Problem
Possible causes
Remedy
Revolving nosepiece not installed
correctly, or not rotated to the click
stop position
Install correctly and rotate to the click
stop position.
Specimen projecting from the stage
surface
Securely attach the specimen to the
stage specimen holder.
Image flows
Condenser tilted
Install correctly and rotate to the click
stop position.
NCB11 filter not being used
Use the NCB11 filter.
Yellow-tinged
Lamp voltage too low
View field too bright
Lamp voltage too high
Lamp voltage too low
Press the Preset switch and adjust the
brightness to match the ND filter
combination.
Condenser aperture diaphragm
stopped down too far
Open the aperture diaphragm to the
proper setting.
Condenser maladjusted
Adjust the condenser so that the field
diaphragm image is shown in the center
of the viewing field.
View field too dark
Image light spread over too great
an area
Adjust the light path switching lever to
provide the target location with 100%
light.
Specimen upside down
Attach the specimen to the stage with the
cover glass face up.
Unspecified cover glass thickness
Attach a cover glass of the specified
thickness (0.17 mm).
Focus impossible on a
high-magnification
objective
Diopter not adjusted
Adjust the diopter.
Too great a difference
in focus after objective
switching.
Diopter not adjusted
Adjust the diopter.
Specimen not moving
smoothly
Specimen holder insufficiently
attached to stage
Attach the specimen holder securely to
the stage.
Interpupillary distance incorrect
Make adjustment
Images on the left and
right eyepiece not
coincident
Diopter not adjusted
Adjust the diopter.
6.2
Electrical
Problem
Possible causes
Remedy
No power despite power
switch turned on
Power cord not connected or
connected improperly
Connect properly.
Lamp burned out
Replace with specified lamp.
Lamp does not light
Impossible to install the lamp
Replace with specified lamp.
Lamp burns out quickly
Lamp used is
unspecified/incompatible
Replace with specified lamp.
Microscope brightness
control knob not
functional
Preset switch off
If off, switch it on.