IMAGE PROBLEMS
Image moves while focusing Specimen rises from stage Secure the specimen in the
surface slide holder
Revolving nosepiece is not Revolve the nosepiece to the
in the click-stop position click-stop position
Insufficient brightness Aperture diaphragm closed Open to the proper setting
too far
Condenser position too low Position the condenser at
the upper limit
MECHANICAL PROBLEMS
Image will not focus with Slide upside down Turn the slide over so the
high power objectives cover glass faces up
Cover glass is to thick Use a 0.17mm cover glass
High power objective contacts Slide upside down Turn the slide over so the
slide when changed from cover glass faces up
low power objective
Cover glass is to thick Use a 0.17mm cover glass
Diopter adjustment is not set Readjust the diopter settings
properly
Lamp does not light when No electrical power Check power cord connection
switched on
Lamp bulb burnt out Replace bulb
Fuse blown out Replace fuse
Slippage of focus when using Tension adjustment is set too Increase the tension on the
the coarse focusing knob low focusing knobs
Fine focus is ineffective Tension adjustment is set too Loosen the tension on the
high focusing knobs
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