Olympus BHA-P Instruction Manual - Page 18
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V I II. TROUBLESHOOTING
I
Troubles
Causes
I
Remedies
I
1. Optical System
I
'
(a) With
the
illuminator
The highllow magnification selector
Place the lever in correct position.
switched on, the field of
lever is not correctly positioned.
I
view cannot be seen.
The condenser is lowered exces-
Raise the condenser t o the upper
i - I
Analyzer and polarizer are in the
"crossed filter" position ("0:O").
Sei them at the position "0:90" or
"90:O".
(b)The field of view is cut off
or illuminated irregularly.
The nosepiece is not click stopped.
Slightly rotate the nosepiece until
1
clicks into position.
The nosepiece is not correctly at-
Insert the sliding dovetail mount
tached to the stand.
lnto the stand all the way, until i t
stops, then lock.
The auxiliary lens is not correctly
attached.
The light path selector lever is stop-
ped midway.
The highllow magnification selector
lever is not correctly positioned.
-
Correct the lens position.
Push the lever all the way.
Place the lever all the way.
The condenser
is not correctly
mounted on the ring mount.
Re-insert the condenser all the way.
The sensitive tint plate is stopped
midway.
Push the plate all the way until it
clicks.
In case of orthoscopic observation,
the condenser top lens stays in the
light path or stops midway.
Swing i t out of the light path.
The field iris diaphragm i s stopped
down excessive1 y.
Dust on condeqser top lens.
Open the diaphragm fully.
(c) Dust or dirt is visible in
the field of view.
Dirty specimens.
I
Dust on eyepiece.
I
The lamp is not correctly attached.
Dust or d i r t on the glass surface at
the light exit o n the base.
Re-insert the lamp correctly.
Clean off the dust o r dirt.