AmScope DM Series, User Manual, Page: 10 / 16

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3.1: The Specimen Stage
The stage has an adjustable height limit. This is used to prevent the stage from
being raised too high which could result in damaging the specimen or even the
objective lenses. The adjustment screw is located on the body just behind the
stage.
Rotate the objective turret until the 40X objective lens is in place. With a
specimen mounted on the stage, slowly raise the stage using the coarse-focus
knob until the specimen is a few millimeters from the lens. Use the fine focus
knob to continue raising the stage until the specimen barely comes in contact
with the lens. The 40X lens has a spring-loaded nose. If the nose begins to
compress, the stage is too high. When the specimen is able to make contact
with the lens without compressing the nose, this is the appropriate maximum
height.
The height-adjustment screw should be tightened to set the stopping position.
If the specimen was too far from the lens, and could not make contact, loosen
the adjustment screw slightly, then continue to make fine focus adjustments
until the specimen is high enough. Once the height is properly set, tighten the
adjustment screw.
3.2: Power
The power switch should be set to the “off” (0) position. Attach the provided
power cable, ensuring that the instrument is not exposed to any environmental
dangers such as moisture or sources of excessive heat such as open flames.
Set the power switch to the “on” (I) position to activate the built-in illumination.
The microscope can also be powered by three AAA batteries. Remove the
bottom cover with a small philips head screwdriver and insert batteries in the
correct orientation. Batteries are not included.
If using rechargeable AAA batteries, the microscope will recharge the batteries
when plugged into an AC outlet using the included power adapter.
SECTION 3: OPERATING THE MICROSCOPE