20
BX41
f ) One side of image is blurred.
Recommended immersion oil is not
used.
Problem
Cause
Remedy
Page
Use the provided immersion oil.
18
Dirt/dust on specimen.
Clean it.
3
Dirt/dust on condenser
Inappropriate object side or cover glass
thickness.
Replace with glass of recommended
thickness.
10
Objective is not correctly engaged in light
path.
Make sure that revolving nosepiece
clicks into place correctly.
Revolving nosepiece is not correctly
mounted.
Push slide dovetail all the way until it
is stopped.
Stage is not correctly mounted.
Re-attach it.
Specimen is not correctly mounted on
stage.
Place specimen correctly on to of
stage and secure it with slide holder.
10
g) Image appears to waver.
Revolving nosepiece is not corrected
mounted.
Push slide dovetail all the way until it
is stopped.
Objective is not correctly engaged in
light path.
Make sure that revolving nosepiece
clicks into place correctly.
Condenser is not properly centered.
Center the condenser.
16
h) Field of view becomes only slightly
brighter when the voltage is raised.
Condenser is not properly centered.
Center the condenser.
16
Condenser is lowered too far.
Adjust the condenser height position.
16
2. Electrical System
a) Bulb intermittently lights and
goes out.
Bulb is nearly burned out.
Replace bulb.
26
A connector is not properly connected.
Check all connectors.
26/27
b) Bulb burns out almost immediately.
Wrong type of bulb is being used.
Use correct bulb type.
26
c) Brightness does not change
when you turn the Light inten-
sity adjustment knob.
Light intensity preset switch is set to ON.
Press switch to OFF.
1
Bulb is not installed.
Install bulb.
26
Bulb is burned out.
Replace bulb.
26
Lamp socket is not connected.
Connect lamp socket correctly.
26
3. Coarse/Fine Adjustment
a) Coarse adjustment knob is
hard to turn.
Tension adjustment ring is tightened ex-
cessively.
Loose ring.
9
You are trying to raise stage without
coarse adjustment knob while pre-focus-
ing lever is kept locked.
Unlock pre-focusing lever
9
b) Stage drifts down by itself or
focus is lost during observation.
Tension adjustment ring is too loose.
Tighten ring.
9
c) Image cannot be focused.
When adjusting stage height, you forgot
to reattach upper stopper screw.
Reattach upper stopper screw.
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