User Guide

120
Series
Operation
12
Adjusting Focusing Tension
1. To adjust the tension of the focusing knobs, first locate the black ridged tension knob on the inside of the coarse
focusing knob.
2. To decrease tension, rotate the adjustment forward, towards the stage (counterclockwise). To increase, rotate
away from the stage (clockwise).
Note: If your stage is slipping down after setting the focus, you need to increase the tension.
Maintenance/Precautions
- All glass surfaces must be kept clean. Fine dust on the optical surface should be blown off using a hand blower or
gently wiped off with a soft lens paper tissue/nonabrasive lint free cloth.
- Carefully wipe off oil or fingerprints on the lens surfaces using tissue moistened with a small amount of lens
cleaner (we recommend Sparkle brand optical cleaner).
- Do not use Sparkle to clean other elements of the microscope. Use a neutral detergent on any plastic or painted
surfaces.
- Do not assemble or disassemble the microscope’s electrical components yourself without advisement from one of
our technicians. Doing so will void your warranty unless by advisement of one of our technicians to do so.
- After use, cover the microscope with the provided dust cover.
- Keep your AmScope microscope in a dry, clean location in order to prevent rust or other damages.