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Home Training Tools Ltd. 2013 Page 4 of 8
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Stop screw
Locking nut
4. Turn the focus knob to move the stage down
(away) from the objective lens as far as
possible.
5. Set a microscope slide (coverslip facing up) in
place under the stage clips. A prepared slide
works best when you do this for the first time.
Move the slide until the specimen is under the
objective lens.
6. Adjust the focus knob until the specimen is in
focus. Slowly move the slide to center the
specimen under the lens, if necessary, by
nudging it with your fingers.
7. Adjust the diaphragm to get the best lighting.
Start with the most light and gradually lessen
it until the specimen image has clear, sharp
contrast. On the MI-1100LED you can also
adjust the light intensity control for contrast.
8. Scan the slide (right to left and top to bottom)
at low power to get an overview of the
specimen (nudge the slide very slowly with
your fingers). Then center the part of the
specimen you want to view at higher power.
9. Rotate the nosepiece to the 10x for 100x
magnification. Refocus and view the slide
carefully. Adjust the diaphragm again until the
image has the best contrast. Repeat with the
40x objective for 400x magnification.
Maintenance
Adjusting the Stage Stop
The stage stop is set at the factory to ensure
that the stage cannot come up far enough to hit
the objective lenses. Under normal circumstances
you will not have to adjust this. However, if you
cannot focus a slide, follow these steps:
1. Loosen the knurled locking
nut by turning it counter-
clockwise.
(Use
needle-
nose pliers for this.)
2. Loosen the stop screw.
Focus on a standard slide until you obtain a
sharp image.
3. Tighten the stop screw by turning it clockwise
until it stops, then turn it back ½ turn.
4. Re-tighten the locking nut.
Changing the Tungsten Bulb in the MI-1100STD
1. Obtain
the
correct
15-watt
tungsten
replacement bulb (our item MI-BULB2). One
is included with your microscope.
2. Unplug your microscope from the power
supply and allow it to cool before replacing the
bulb.
3. Carefully lay the microscope on its side.
4. Using a #2 Phillips screwdriver,
remove the screw from the center
of each rubber foot.
5. Remove the bottom plate and
gently push the bulb in and turn
it to release it from the socket.
6. Replace with a new bulb, then
put the plate back in place and
replace the rubber feet.
Changing the LED Bulb in the MI-1100LED
1. Obtain the correct LED replacement bulb (our
item MI-BULB10). One is included.
2. Unplug the microscope from the power supply
and allow it to cool before replacing the bulb.
3. Raise the stage to its upmost position.
4. Turn the top segment of the illuminator
housing counterclockwise; remove, and set
aside.
5. Remove the LED bulb by
pulling it straight out.
6. Replace with a new LED
bulb, and twist the top of the
illuminator housing back in
place.
Warranty
Home Science Tools warrants this microscope to be free from defects in material and workmanship under normal
use and service for five years from the date of purchase. This warranty does not cover light bulbs, batteries, or
damage due to misuse, abuse, alterations, or accident. Warranty does not cover lenses that have become
inoperable due to excessive dirtiness as a result of misuse or lack of normal maintenance.
You will need to return your microscope freight prepaid for warranty service to Home Science Tools, or the repair
facility we designate. We will repair or replace your microscope at no charge and return it freight prepaid to you.
Please call 1-800-860-6272 to arrange warranty service before returning this instrument. Please note that
warranties apply only to the original purchaser and are not transferable.
