14
TROUBLESHOOTING GUIDE
12
Under certain conditions, performance of the unit may be adversely affected by factors other than defects. If problems occur,
please review the following list and take remedial action as needed. In case of any other problem which cannot be rectified as
below, please contact the service agents.
Trouble
Cause
Remedy
Although the Power is on, the field of
view is dark.
The bulb is burned out.
Connect it securely.
The socket pin is not connected from the
illumination column to the back of the
instrument.
The light intensity control is set to too low.
The objective is not in position.
Replace the bulb.
Set the illumination to desired position.
Make sure the objective is clicked
properly.
Dirt or dust is visible in the field of view.
Dirt/dust on the eyepieces.
Clean the specimen.
Dirt/dust on the specimen.
Clean them thoroughly.
Visibility is poor.
- Image is not sharp.
- Contrast is not sharp.
- Details are indistinct.
One side of image is blurred.
The bulb flickers and the brightness is
unstable.
The coarse adjustment knob is too
difficult to rotate.
The field of view of one eye does not
match that of the other.
The aperture iris diaphragm is opened or
stopped down too far in brightfield
observation.
The specimen is not correctly mounted
on the stage.
The bulb is nearly burned out.
The tension adjustment ring is loosened
too much.
Incorrect diopter adjustment.
The power cord is not connecting securely.
Replace it with a clean specimen.
Make sure that the revolving nosepiece
clicks properly into place.
Use a voltage stabilizer.
Adjust it appropriately.
Adjust the interpupilary distance.
The specimen is not correctly engaged.
The revolving nosepiece is not correctly
engaged
The line voltage fluctuates
The tension adjustment ring is tightened
too much.
Incorrect interpupilary distance
adjustment.
Clean eyepieces gently.
Adjust the aperture.
Place it correctly on the stage.
Replace the bulb.
Tighten it appropriately.
Adjust the diopter.
Connect it securely.
Fuse is blown.
Replace fuses (250V / 5 Amps)
1.
2.
3.
4.
5.
6.
7.
