Trouble Shooting - KERN Optics OCM 161 User Instructions

9 Trouble shooting

Problem
The bulb does not light
The bulb blows immediately
The field of view is dark
You cannot adjust the brightness
The field of view is dark or is not
correctly
illuminated
The field of view of one eye does not
match that of the other eye
OCM-1-BA-e-2211
Possible causes
The mains plug is not correctly plugged in
There is no power at the socket
Defective bulb
Defective fuse
The specified bulb or fuse has not been used
The aperture diaphragm and/or field
diaphragm are not opened wide enough
The selector switch for the beam path is set
to "Camera"
The condenser is not correctly centred
The brightness control has been set
incorrectly
The condenser has not been correctly
centred
The objective is not positioned correctly on
the beam path
The selector switch for the beam path is
between two settings
The nosepiece is not correctly fitted
An objective is being used which doesn't
match the lighting area of the condenser
The condenser has not been correctly
centred
The field diaphragm is closed too tightly
The bulb is not correctly fitted
The interpupillary distance is not correctly
adjusted
Dioptre setting has not been carried out
correctly
Different eyepieces are used for the
righthand and lefthand side
The eyes are not used to using a microscope
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