3
To determine the magnification at which you are
viewing a specimen, multiply the power of the
eyepiece by the power of the objective.
Adjust the coarse-focusing-knob which
moves the stage up until the specimen is fo-
cused. Be careful that the objective does not
make contact with the slide at any time. This
may cause damage to the objective and/or
crack your slide.
Adjust the fine-focusing-knob to get the im-
age more sharp and more clear.
Colour filters may be inserted into the filter
holder for definition of specimen parts.
Swing the filter holder out and insert colour
filters.
Be careful not to spill any liquids on the mi-
croscope.
Do not mishandle or impose unnecessary
force on the microscope.
Do not wipe the optics with your hands.
Do not attempt to service the microscope
yourself.
3.2 Dioptre adjustment (BE5 and TE5)
Look through the right-hand eyepiece with
your right eye and focus on the object.
Then look through the left-hand eyepiece
with your left eye. If the image is not well fo-
cussed, turn the dioptre adjustment ring (1)
until it is (see Fig. 1).
The dioptre adjustment ring (1) is marked with
dioptric values of ±5. The value to which the
scale marking (2) points corresponds to the
dioptric value for the user.
Set up the same value next time you use the
microscope as well.
Fig. 1 Dioptre adjustment
3.3 Setting of interpupillary distance (BE5
and TE5)
Look through the eyepieces with both eyes
and turn the tubes around the axle until you
can see only one image field.
Point (1) indicates the interpupillary distance of
the user on the scale (2) (see Fig. 2).
Set up the same interpupillary distance next
time you use the microscope as well.
Fig. 2 Adjustment of interpupillary distance
3.4 Adjustment of retaining attachment
You need to adjust the retaining attachment
(1) in order to fix the following problems: Dif-
ficulty turning the coarse focus adjustment
knob, slide slowly losing focus, sliding of ob-
ject stage (see Fig. 3).
Turning the knob for the retaining attachment in
the direction of the arrow secures the retaining
attachment. Turning in the opposite direction
loosens the focussing drive.
Fig. 3 Retaining attachment adjustment
3.5 Changing the lamp
Turn off the power switch and unplug the
mains plug.
Unscrew the base plate and remove it.
Unplug the connector to the LED unit by
pressing on the connector socket (1) and
pulling out the plug (2) (see Fig. 3).
Undo two screws (3), swap the faulty LED
unit for a new one and then screw the mi-
croscope back together.
Fig. 3 Changing the lamp
