Trouble Shooting - KERN OBE 112 User Instructions

8 Trouble shooting

Problem
The bulb does not light
The bulb blows immediately
The visual field is dark
You cannot adjust the brightness
The visual field is dark or is not correctly
illuminated.
The visual field of one eye does not
match that of the other eye.
OBE-1-BA-e-1510
Possible causes
The mains plug is not correctly plugged
in
There is no power at the socket
Defective bulb / LED
Defective fuse
The specified
bulb or fuse has not been used.
The aperture diaphragm is not opened
wide enough
.
The brightness control has been set
incorrectly
The condenser is too low.
The lens has not been correctly
adjusted
The object revolving unit is not correctly
fitted.
The condenser is not correctly
fitted
A lens is being used which doesn't
match the lighting area of the
condenser.
The bulb/LED is not fitted correctly.
The gap between the eyes is not
correctly
adjusted.
Different eyepieces are used for the right
and left side.
(Only OBE112 and OBE113)
The eyes are not used to
using a microscope.
Dioptre setting has not been carried out
correctly.
12