Olympus BX51 Instructions Manual page 26

Problem
e) Visibility is poor.
· Image is not poor.
· Contrast is poor.
· Details are indistinct.
· Image glares.
f ) One side of image is blurred.
g) Image appears to waver.
h) Field of view becomes only slightly
brighter when the voltage is raised.
2. Electrical System
a) Bulb intermittently lights and goes
out.
b) Bulb burns out almost immediately. Wrong type of bulb is being used.
c) Brightness does not change when
you turn light intensity adjustment
knob.
d) All voltage indicator LEDs light and
voltage cannot be varied with light
intensity adjustment knob.
e) Lamp voltage cannot be varied
with light intensity adjustment
knob.
3. Coarse/Fine Adjustment
a) Coarse adjustment knob is hard
to turn.
b) Stage drifts down by itself or focus
is lost during observation.
22
Cause
Immersion oil contains bubbles.
Recommended immersion oil is not
used.
Dirt/dust on specimen.
Dirt/dust on condenser.
Inappropriate object side or cover glass
thickness.
Objective is not correctly engaged in light
path.
Revolving nosepiece is not correctly
mounted.
Stage is not correctly mounted.
Specimen is not correctly mounted on
stage.
Revolving nosepiece is not corrected
mounted.
Objective is not correctly engaged in
light path.
Condenser is not properly centered.
Condenser is not properly centered.
Condenser is lowered too far.
Bulb is nearly burned out.
A connector is not properly connected.
Light intensity preset button is set to ON. Press button to OFF.
Bulb is not installed.
Bulb is burned out.
Lamp socket is not connected.
Bulb is burned out.
Tension adjustment ring is tightened ex-
cessively.
You are trying to raise stage without
coarse adjustment knob while pre-focus-
ing lever is kept locked.
Tension adjustment ring is too loose.
Remedy
Remove the bubbles.
Use the provided immersion oil.
Clean it.
Replace with glass of recommended
thickness.
Make sure that revolving nosepiece
clicks into place correctly.
Push slide dovetail all the way until it
is stopped.
Re-attach it.
Place specimen correctly on top of
stage and secure it with slide holder.
Push slide dovetail all the way until it
is stopped.
Make sure that revolving nosepiece
clicks into place correctly.
Center the condenser.
Center the condenser.
Adjust the condenser height position.
Replace bulb.
Check all connectors.
Use correct bulb type.
Install bulb.
Replace bulb.
Connect lamp socket correctly.
Replace bulb.
Loose ring.
Unlock pre-focusing lever.
Tighten ring.
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