Olympus CHA-P Gebruiksaanwijzing - Pagina 17
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Remedies
Troubles
Dirty specimen.
Dust
on
condenser lens.
Causes
Clean.
( f ) The field of view is par-
tially out of focus.
The specimen i s not correctly posi-
tioned on the stage.
The objective is not correctly
po-
sitioned
in
the light path.
Place the specimen o n the stage and
secure it w i t h the specimen clips.
I
(g) The image goes
out of
focus eccentrically.
Slightly rotate the nosepiece until
it
clicks into position.
(h) When
objectives
are
changed, they are not
parfocal.
The objective is n o t correctly posi-
tioned in the light path.
(
i ) Light intensity does not
increase
although
the
voltage is raised.
I
(k) No conoscopic image can
I
The condenser t o p lens is not in
(
Swing
it in.
Stightly rotate the nosepiece until
it clicks into position.
The mechanical tube length is not
correctly adjusted.
(
j ) The condenser does not
come to the correct posi-
tion for optimum extinc-
tion.
Adjust with the tube length adjust-
ment rings o n
the
observation tube.
The condenser i s lowered
exces-
sively.
Raise the condenser.
1
The observation tube and mndens-
er are n o t correct1
y
mounted.
I
be
seen.
1
1
( I ) The crossed fiiter p o s i
2 .
Electric System
Re-mount them correctly.
1
tion is n o t attained.
the light path.
The analyzer i s out of the light
path.
Push
it
in.
I
I
I
(a)
The illuminator is t o o
I
bright
(or
too dark).
The mains voltage is too high (or
t o o low).
The rheostat trimmer screw is not
matched
to
the mains voltage.
Adjust the mains voltage with
a
variable voltage transformer.
The rheostat trimmer screw is not
correct lv adjusted.
Adjust the trimmer screw t o match
the mains voltage.
Adjust
it
correctly.
(b) Output voltage for the
il-
luminator cannot be reg-
ulated.
The voltage selector switch is not
matched to the mains voltage.
The mains voltage
is
too low or
too
high.
Adjusr
the
mains voltage selector
I
switch t o the mains voltage.
Adjust the mains voltage with a
variable voltage transformer,
1