Olympus BHT Buku Petunjuk - Halaman 20
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lmage is not sharp.
Insufficient contrast.
microscope frame all the way,
lmage details lack defi-
nition.
positioned in the light path.
Phenomenon
e) Resolution problems:
I
Objective correction collar is
I
Rotate correction collar, keep-
I
not adjusted.
1
ing specimen in fine focus
Cause
Non Olympus objectives are
used.
until optimum resolution is
Remedy
Use Olympus LB series objec-
tives.
I
used with immersion oil.
1
1
Olympus is not used.
1
1
Bubbles in immersion oil.
Immersion oil designated by
Remove bubbles (and reap-
ply oil).
Use Olympus immersion oil.
out of focus, or image is
1
mounted.
(
microscope frame all the way,
f )
Field of view is partially
partly out of focus.
1
1
then lock.
Objective
is not correctly
positioned in the light path.
Dirty specimens.
Dust on condenser lens.
Nosepiece is not correctly
Slightly rotate nosepiece until
i t clicks in place.
Clean.
lnsert nosepiece dovetail into
Specimen is not correctly
positioned on stage.
Place specimen slide correctly
on stage, and place stage clips
open it.
lnsert nosepiece dovetail into
microscope frame all the way,
then lock.
g) Specimen image is partial-
ly out of focus.
Objective
is not correctly
positioned in the light path.
Nosepiece is not correctly
mounted.
Slightly rotate nosepiece until
i t clicks into place.
h) Field of view
becomes
2.
Electric System
only slightly brighter by
increasing voltage.
I
a) Illuminator i s too bright
I
Line voltage selector switch
Condenser is not centered.
Condenser is not correctly
I
(or too dark) even when
I
is not matched with local
Center condenser.
Center condenser.
centered.
Condenser
is lowered too
mains voltage
b) Voltage for illuminator
cannot be raised.
Adjust condenser height.
1
Match
selector
switch
to
mains voltage.