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Troubleshooting
If you are experiencing difficulty with your microscope, try these troubleshooting techniques:
Problem
Light fails to
operate
Light flickers
No image
Unable to
focus slide
Poor
resolution,
image not
sharp
Spots in field
Uneven
illumination of
field
Specifications
Eyepiece
Widefield 10x eyepiece with fully coated optics. Inclined 45° head.
Nosepiece
3-hole, ball-bearing mounted with positive click stops.
Objectives
All objectives are achromatic, parfocalled, parcentered, and fully coated.
Focusing
Single intermediate focusing control with slip clutch. All metal rack-and-pinion focusing with
adjustable stage stop.
Stage
Acid and chemical resistant 95 x 95mm metal stage with stage clips (not designed for use
with a mechanical stage).
Condenser
Fixed 0.65 NA condenser.
Diaphragm
Calibrated 6-hole disc diaphragm.
Illuminator
15-watt tungsten illuminator with grounded 110-volt cord on model MI-1100STD, 20-watt
equivalent LED illuminator with AC Adapter or optional batteries on model MI-1100LED.
© Home Training Tools Ltd. 2005
1.
The batteries are dead (MI-1100LED). Use the AC adapter to recharge the batteries.
2.
The light intensity control is off (MI-1100LED). Turn up the light intensity.
3.
The bulb is burned out. Replace the bulb. (See "Changing the Bulb," p. 4.)
4.
The incorrect bulb is installed. Replace with the correct bulb.
1. The bulb is not properly inserted into the socket. Properly insert the bulb.
2. The bulb is about to burn out. Replace the bulb.
1. The nosepiece is not indexed properly. Move revolving nosepiece until the objective
lens clicks into position.
2. The light is too bright. Adjust the diaphragm.
1. The slide coverslip is too thick. Use 0.17 mm thick (No. 1) coverslip.
2. The slide is upside down. Place the slide on the stage with the coverslip facing up.
3. The stage stop is not set at the proper position. Adjust the stage stop. (See "Adjusting
the Stage Stop," p. 4.)
1. The objective or eyepiece lenses are dirty. Clean the lenses. (See "Cleaning," p. 2.)
2. There is too much light. Adjust the diaphragm.
1. The specimen slide, objective, or eyepiece lens is dirty. Clean the slide or lenses.
(See "Cleaning," p. 2.)
1. The nosepiece is not indexed properly. Move revolving nosepiece until the objective
lens clicks into position.
2. The diaphragm is not properly indexed. Adjust the diaphragm to the proper level.
4x, 0.10 N.A., red ring, 3.6mm field of view, 40x magnification
10x, 0.25 N.A., yellow ring, 1.4mm field of view, 100x magnification
40x, 0.65 N.A., blue ring, 0.4mm field of view, 400x magnification, retractable
Page 7 of 8
Possible Reason and Solution
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