Swift M2250 Series, User And Care Manual

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9
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. (If the new LED does not work, try repeating the
above procedure. Remove the bulb and re-install it using the opposite
bulb socket pins to reverse the polarity.)
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. Make sure the batteries are properly charged. Plug the power
adapter in and see if the microscope will turn on (M2251C).
3. The bulb may need to be replaced. See “Bulb Replacement on
page 7.
B. PROBLEM – Image appears “washed out” or weak.
CORRECTION
1. Rotate disc diaphragm to smaller aperture or slightly close the
iris diaphragm.
2. Objective lens is dirty. Clean as described under “Cleaning”.
3. Eyepiece is dirty. Clean as described under “Cleaning”.