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ページを印刷する340 Series
Common Issues (Continued)
Symptom
Cause
Image color is not correct
No filter is used or filter is in use
The condenser height is not correct
The objective touches the
The cover slip is not standard sized
cover slip
The limit-stop is set too high or not engaged
Unable to move the slide
The slide is not secured correctly
smoothly
The mechanical stage is not properly secured
The coarse focusing knob
Limit-stop is engaged
won't raise the stage
Limit-stop is engaged
The fine focusing knob
won't raise the stage
The bulb/light source
The bulb is close to burning out (halogen only)
flickers
The circuit board is malfunctioning (LED only)
The microscope does not
The microscope is unplugged
light up
The bulb is not inserted correctly (halogen only)
The bulb burned out (halogen only)
The fuse burned out
The fuse burns out fre-
The voltage is too high
quently
The bulb burns out fre-
The voltage is too high
quently
Used the wrong bulb (halogen only)
Remedy
OPTICAL ISSUES
Remove color filter if natural light is desired, or insert desired
filter
Adjust the condenser height with the knob to the left of the mi-
croscope underneath the stage
MECHANICAL ISSUES
Replace the cover slip with the appropriate 0.17mm thickness slip
Be careful to avoid contact between objective and the slide when
the limit stop is not engaged (unless using the 100x objective
with oil). To reengage, focus the sample, then lock the limit stop
into place to set max height at a safe but usable distance.
Adjust the slide to use the stage clips and secure the sample
Tighten the mechanical stage screws to better secure the stage
Disengage the limit stop on the rear of the stage
Disengage the limit stop on the rear of the stage
ELECTRICAL ISSUES
Replace the bulb. This unit uses our model BH-6V15W.
Contact us to request a repair/replacement
Insert the plug into the wall socket to achieve electrical illumina-
tion
Check the bulb by unscrewing the base (remove eyepieces first to
prevent falling out) door and ensuring that the bulb is inserted
Replace the bulb. This unit uses our model BH-12V20W.
Replace with fuse on the bottom of the microscope
Use the correct power supply (110v if 110v unit, 220v if 220v
unit), or get a voltage adapter to convert to the proper electrical
system
Use the correct power supply (110v if 110v unit, 220v if 220v
unit), or get a voltage adapter to convert to the proper electrical
system
Use the correct wattage bulb for the unit. Using a higher wattage
than it is rated for can damage your unit (melt components with
additional heat), so please be sure to use the correct one. Damage
from incorrect usage is not covered under warranty.
16
Troubleshooting