5
3. To change magnification:
a. Rotate revolving nosepiece to position 10x objective into optical path. Some slight adjustment
of focusing knob may be required.
b. Rotate revolving nosepiece to position 40x objective into optical path. Some slight adjustment
of focusing knob may be required.
Note: Take care when rotating 40x objective into place. This is the longest lens and has a
spring retractable mechanism which retracts slightly into its housing if the front of the lens
comes in contact with the specimen slide while focusing the microscope. This prevents
damage to the lens or slide.
MAINTENANCE
WARNING: For your own safety, turn switch to OFF position. If you have purchased the optional
AC adapter, remove it from the power source and detach plug from jack located at back of
microscope base before maintaining microscope.
A. OPTICAL MAINTENANCE
1. Do not attempt to disassemble any lens components. Consult an expert technical service
company when repairs not covered by these instructions are needed.
2. Prior to cleaning any lens surface, brush dirt and lint off lens surface with camel hair brush or
compressed air. Use of air in a can, available at most computer stores, is good source of clean
air.
3. Do not remove eyepiece lens or objective lenses from microscope. Clean only the outer lens
surface by breathing on lens to dampen surface, then wipe with lens paper or cotton swab. Avoid
wiping lens surface while dry, as lenses are scratched very easily.
B. MECHANICAL MAINTENANCE
1. Stage stop adjustment: Stage stop has been pre-adjusted at the factory, and should not require
readjustment.
2. Metal parts: Use a clean, damp cloth to remove dust or dirt from metal part followed by a dry cloth.
C. ELECTRICAL MAINTENANCE
1. Replacing batteries:
Your microscope includes 3 disposable AA Alkaline batteries. Replace the 3 AA batteries when
the LED “bulb” becomes dim.
Gently lay microscope on its side. Observe small door in center of microscope bottom base.
Loosen screw on door and open. Battery case is mounted on inside of door. Remove all 3
batteries and replace with new disposable AA Alkaline batteries, making certain to insert with
correct polarity according to marking on battery holder, close and secure door.
2. Replacing LED element:
An LED “bulb” will last up to 50,000 hours so you don’t have to do this exercise very often.
To open the illuminators field lens housing, use 0.9mm “L” type hex key wrench supplied with your
microscope to loosen hex screws on lens housing. Remove lens housing to expose LED “bulb”.
Remove bulb by grasping the plastic base of bulb and gently pulling straight up. Insert new LED
“bulb”, replace lens housing and tighten hex screw to secure lens housing in place.
