Pagina 18
13. Troubleshooting
Review the information in the table below to troubleshoot operating problems.
PROBLEM
CAUSE
SOLUTION
I. Optical Section:
LED operates, but field of view re
-
mains dark.
Power supply is unplugged.
Connect
Brightness is too low
Set brightness to a proper level
Bertrand lens is in
Remove Bertrand lens from light path
You are in a position of extinc
-
tion
Disengage analyzer from the light path
Field of view is obscured or not
evenly illuminated
Revolving nosepiece is not cor
-
rectly engaged.
Make sure that the revolving nosepiece
clicks properly into place.
Tint plate or Bertrand lens are
in a intermediate position.
Move to a click stop
Dirt or dust is visible in the field of
view.
Dirt/dust on the specimen
Clean the specimen
Dirt/dust on the eyepieces
Clean the eyepieces
Image looks double
Aperture iris diaphragm is
stopped down too far.
O
pen aperture iris diaphragm.
The condenser is not well cen
-
tered or it is in a wrong height
Set the condenser until a proper image is
achieved
Visibility is poor
.
· Image is not poor.
· Contrast is poor.
· Details are indistinct.
· Image glares
Revolving nosepiece
is in an
incorrect position
Move the nosepiece to a click stop
Aperture iris diaphragm is too
closed or too open.
Adjust aperture iris diaphragm.
Dust or dirt on lenses (conden
-
ser, objectives, eyepieces and
slide)
Clean thoroughly.
For transmitted light observa
-
tion, the coverglass thickness
must not exceed 0.17mm
Use a coverglass with thickness 0.17mm
Focus is not even
Slide holder is not flat. Move the specimen
to a flat position.
One side of the image is unfocused
Revolving nosepiece
is in an
incorrect position
Move the nosepiece to a click stop
Slide is mounted not in a flat
position (tilted)
Place the specimen in a flat position on the
stage
Poor quality of the glass slide
Use a glass slide with higher quality
Conoscopic image cannot be seen
Bertrand lens is not in the light
path.
Insert the lens in the light path
Total extinction cannot be obtained
Analyzer is not in the light path Insert analyzer in the light path.
Содержание B-380 Series
Страница 1: ...Model B 383POL B 380 Series INSTRUCTION MANUAL Ver 4 0 2019 ...
Страница 5: ...Pagina 5 Opposite side EYEPIECES DIOPTER ADJUSTMENT RING ANALYZER POLARIZER TENSION ADJUSTMENT RING ...
Страница 22: ...Modello B 383POL Serie B 380 MANUALE DI ISTRUZIONI Ver 4 0 2019 ...
Страница 29: ...Pagina 29 6 Inserirelospinottodell alimentatorenelconnettore posto sul retro del microscopio Fig 5 Fig 5 ...