User Manual

17
150
Series
T
roubleshooting
Common Issues (Continued)
Symptom Cause Remedy
OPTICAL ISSUES
The color of the image is
not accurate
The brightness adjustment knob is not in the right position Adjust the brightness knob to a higher or lower setting for color
clarity
No filter is used or filter is in use Remove color filter if natural light is desired, or insert desired
filter
MECHANICAL ISSUES
The objective touches the
cover slip
The cover slip is not standard sized Replace the cover slip with the appropriate 0.17mm thickness slip
The limit-stop is set too high or not engaged Be careful to avoid contact between objective and the slide when
the limit stop is not engaged. To reengage, focus the sample, then
lock the limit stop into place to set max height at a safe but us-
able distance.
Unable to move the slide
smoothly
The slide is not secured correctly Adjust the slide to use the stage clips and secure the sample
The mechanical stage is not properly secured Tighten the mechanical stage screws to better secure the stage
Focus knob does not turn
The tension knob is too tight Loosen it by adjusting the tension ring inside the coarse focus
knob counterclockwise (close to the arm of the microscope on
the left of the microscope)
Stage declines by itself
The tension knob is too lose Tighten it by adjusting the tension ring inside the coarse focus
knob clockwise (close to the arm of the microscope on the left
of the microscope)
The focusing knob won’t
raise the stage
Limit-stop is engaged Disengage the limit stop on the rear of the stage of the micro-
scope
ELECTRICAL ISSUES
The bulb/light source
flickers
The bulb is close to burning out Please contact us in regards to this issue. LED lights do not burn
out, so there may be another electrical issue
The microscope does not
light up
The microscope is unplugged Insert the plug into the wall socket to achieve electrical illumina-
tion