8
BULB REPLACEMENT - To prolong the life of the bulb you should always
turn off the unit when not in use.
To replace an LED, you must first turn the power off and unplug the
microscope’s electrical cord from the electrical socket and remove
any slides on the stage. Use the small allen wrench (.09mm) that was
included with the microscope to loosen the set screws that hold the
black plastic illuminator housing onto the base of the microscope.
Remove the illuminator housing to expose the LED. Simply pull the LED
straight up to remove it from the light socket. Align the 2 metal socket
pins with the holes at the bottom of the new LED and push the LED onto
the socket. Re-install the illuminator housing.
TENSION CONTROL OF FOCUSING MOVEMENT
The focus tension is easily adjusted by using the collar found on the
coarse focusing controls, between the knob and upright support. A
clockwise turn of this collar moves it toward the upright support and
increases tension, while a counter clockwise turn moves the collar
toward the knob and decreases tension.
COMMON PROBLEMS IN MICROSCOPY
A. PROBLEM: The illuminator light does not come on
CORRECTION:
1. Make sure the microscope is plugged into a functional electrical
socket.
2. The bulb may need to be replaced. See “Bulb Replacement” on
page 7.
B. PROBLEM: Image appears “washed out” or weak.
CORRECTION:
1. Slightly close the iris diaphragm.
2. Objective lens is dirty. Clean as described under “Cleaning”.
3. Eyepiece is dirty. Clean as described under “Cleaning”.
C. PROBLEM: Dust or hairs seem to be moving in the image.
CORRECTION:
Disc diaphragm is at too small an aperture. Rotate to
larger
aperture.
