Chapter 5 Troubleshooting
5.2 Operation
120
5.2 Operation
Problem Possible cause Countermeasure
Image cannot be
focused even with the
objective at the highest
position.
Stage attached incorrectly. Attach the stage correctly.
Image cannot be
focused with 20x or 40x
objective.
Culture vessel’s bottom plate thickness is
out of the objective’s correction range.
Use a culture vessel with bottom plate
thickness within the correction range.
When viewed through
the binocular eyepiece,
the images do not
merge into a single
image.
Interpupillary distance not adjusted. Adjust the interpupillary distance.
Diopters not adjusted. Adjust the diopters.
Eyestrain develops
during observations.
Inappropriate brightness.
Adjust brightness of lamp, or use ND
filters.
5.3 Electrical System
Problem Possible cause Countermeasure
There is no power even
though the power
switch is set to ON.
The AC adapter or the power cord for the
power supply is not connected at all, or is
not connected securely.
Turn off the power switch, and check
connection of AC adapter and power
cord.
The dia illuminator
lamp does not light.
Dead lamp. Replace with a specified lamp.
Dia illuminator lamp
burns out in a short
time.
Unsupported lamp used. Replace with a specified lamp.
Control cable not connected correctly. Check connection of cable.
The brightness of the
lamp does not change
even when the
brightness control knob
on the microscope is
rotated.
EXTERNAL (or CTRL) switch on the
power supply is turned off.
Turn the switch on.
Dead lamp. Replace with a specified lamp.
The lamp does not turn
on/off even when the
dia illumination ON/OFF
switch is operated.
Control cable not connected correctly. Check connection of cable.
The brightness of the
lamp does not change
even when the
brightness control knob
on the power supply
device is rotated.
EXTERNAL (or CTRL) switch on the
power supply is turned on.
Turn the switch off.
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