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General troubleshooting tables
If difficulties should be encountered in the course of operation, and no major instrument malfunctions can initially be detected, please recheck the symptoms, referring to the tables
provided below, before contacting your service representative.
SYMPTOMS
Double images
Dirt appears in the field of view
Image is not clear
Image is not clear while the focus
changing
The focusing knob is not smooth
The image is obscure because of
the head slipping down by itself
during observation
Incision image appears in the
field of view or of the video view
Eyes fell tired easily
Bulb does not work when the
switch is on
Bulb is burned out suddenly
Brightness is not enough
The bulb flickers or the
brightness is unstable
CAUSES
Interpupillary distance is not correct
Diopter adjustment is not correct
Magnification of each eyepiece is not the same size
Dirt on the specimen
Dirt on the surface of eyepiece
Dirt on the surface of the objective
Diopter adjustment is not correct
Focus is not correct
The focusing knob is too tight
The focusing knob is too loose
The pole is not in correct position
Diopter adjustment is not correct
Brightness of light is not correct
No power on
The bulb was not inserted correct
Bulb is wrong
Use the wrong bulb
The voltage is too high
Use the wrong bulb
The voltage is too low
The bulb will burn out soon
The bulb was not inserted correctly
COUNTERMEASURES
Readjust it
Readjust it
Mount the same size eyepiece
Clean the specimen
Clean the surface
Clean the objective
Readjust the diopter
Readjust the focus
Loosen it to a suitable position
Tighten it to a suitable position
Pull or push it to the correct position
Adjust the diopter
Adjust the brightness
Check the connection with the power supply
Insert it correctly
Replace with a new one
Replace with a correct one
Control the voltage: e.g. use voltage regulator
Replace with a correct one
Increase the input voltage
Replace with a new one
Insert it correctly
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