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5.2 Mechanical Parts
PROBLEM
REASON FOR PROBLEM
SOLUTION
The coarse focus control is hard
to turn.
The tension adjustment collar is too tight.
Loosen the adjustment collar.
Pre-focusing lever is locked.
Release pre-focusing lever.
Stage lowers by itself or focus is
lost during observation.
Tension adjustment ring is too loose.
Tighten ring to an optimum tightness.
Specimen cannot be brought
into focus.
Stage height adjustment is too low.
Raise stage holder height.
Image shifts when you touch
stage
Stage is not properly mounted.
Clamp stage.
Specimen moves easily.
The slider holder is not fixed sufficiently.
Fix it securely.
Field of view is not the same in
both eyes.
Interpupillary distance is incorrect.
Adjust the interpupillary distance.
The eyes tire easily.
Incorrect adjustment to the dioptre.
Adjust dioptre correctly.
Image is too bright.
Adjust the bulb voltage.
5.3 Electric Parts
PROBLEM
REASON FOR PROBLEM
SOLUTION
No illumination.
No power supply.
Check the power cord.
Incorrect installation of the bulb.
Install the bulb correctly.
The bulb has blown.
Change bulb.
The connection of the lamp housing power
plug is incorrect.
Review instruction and check connection.
Bulb frequently burns out.
Incorrect bulb installed.
Use the specified bulb.
Insufficient light intensity.
Incorrect bulb installed.
Use the specified bulb.
Flickering light.
The bulb is going to blow.
Change the bulb.
The power cord has a poor connection.
Check the power cord.
