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B. PROBLEM
– Illumination “hot spots” and uneven brightness in the
field of view.
CORRECTION -
1. Is the Abbe condenser in the correct position?
2. Are the nosepiece and objective clicked into proper position?
C. PROBLEM
– Image appears “washed out” or weak.
CORRECTION -
1. Slightly close the diaphragm to a smaller aperture
2. Objective lens is dirty. See “Care and Cleaning” Section.
3. Eyepiece is dirty. See “Care and Cleaning” Section.
D. PROBLEM
– Dust or hairs seem to be moving in the image.
CORRECTION –
The iris diaphragm is not open wide enough. Slowly
open the diaphragm to increase the size of the opening allowing
for additional illumination.
E. PROBLEM
- Once the specimen is in focus, it moves out of focus
CORRECTION
– Gravity is causing the stage to drift downward,
causing loss of focus. The focusing tension should be increased to act as a
brake to prevent this downward drift. The M3500 Series is outfitted with
a tension collar on the focusing shaft to allow tension to be increased or
decreased on the Swift slip-clutch system. See page 10.
F. PROBLEM
– Focusing knobs turn with difficulty.
CORRECTION
–
1. Loosen the tension collar adjustment. See page 9.
2. The microscope should be disassembled, cleaned and
re-lubricated by a qualified, authorized technician.
Summary of Contents for M3500 SERIES
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