32
Problem
Cause Remedy Page
f ) Visibility of observed image is poor.
· Image is not sharp.
· Contrast is poor.
· Details are poorly visible.
The specimen such as a brain slice is
fixed poorly.
Fix it correctly.
–
Bubbles attached to the objective front
lens.
Remove the bubbles.
–
Too small quantity of solution in the petri
dish.
Supply sufficient solution in the petri
dish.
–
The petri dish is tilted. Place the petri dish correctly on the
stage.
12
Dirt/dust on the objective front lens. Clean it thoroughly using neutral de-
tergent.
–
Dust/dirt on the condenser.
Clean it thoroughly. 2
g) One side of image is blurred. The revolving nosepiece is installed in-
correctly.
Secure it by pushing in the sliding
dovetail all the way until the stopper.
38
The objective is engaged incorrectly in
the light path.
Make sure that revolving nosepiece
clicks into place correctly.
13
The objective is placed incorrectly (may
be loose) in the revolving nosepiece
position.
Insert the objective all the way into the
revolving nosepiece position until it is
stopped.
–
The stage center plate is tilted. Correct the tilt. –
h) Image appears to waver. The revolving nosepiece is installed in-
correctly.
Secure it by pushing in the sliding
dovetail all the way until the stopper.
38
The objective is engaged incorrectly in
the light path.
Make sure that revolving nosepiece
clicks into place correctly.
13
The objective is placed incorrectly (may
be loose) in the revolving nosepiece
position.
Insert the objective all the way into the
revolving nosepiece position until it is
stopped.
–
The condenser is centered incorrectly. Center it correctly. 16
i ) The field of view becomes brighter
only slightly although the voltage is
increased.
The condenser is centered incorrectly. Center it correctly. 16
The condenser is in too low a position. Adjust the condenser height. 16
2. Electrical System
a) The bulb intermittently lights and
goes out.
The bulb is nearly burnt out. Replace the bulb. 41
A cord or connector is not properly con-
nected.
Connect cords and plugs securely.
–
b) The lamp bulb burns out soon after
lighting.
The bulb in use is not the specified lamp. Replace with a standard bulb.
41
c) The brightness cannot be varied
with the light intensity control.
No lamp bulb is installed. Attach a lamp bulb. 41
The lamp bulb is burnt out. Replace the lamp bulb. 41
The lamp housing output connector is
unplugged.
Plug the lamp housing output connec-
tor.
–
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