Olympus U-25ND6 Manuale di istruzioni - Pagina 19
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Under certain conditions, performance of the system may be adversely affected by factors other than defects. If problems
occur, please review the following list and take remedial action as needed. If you cannot solve the problem after checking
the entire list, please contact your local Olympus representative for assistance.
Problem
1. Optical System
a) Bulb lights but the field of view is
dark.
b) Observed image is low quality, not
sharp or poor in contrast.
c) Field of view is obscured or not
evenly illuminated.
d) Field contains dark, spot-like areas. Dirt or dust on burner or on burner side
2. Electrical System
a) Main switch cannot turn system ON. Power cord is not corrected properly.
b) Main switch can turn system ON
but mercury burner will not light.
16
Cause
Shutter is closed.
ND filter is engaged in light path.
Fluorescence mirror unit is not properly
engaged in light path.
Aperture and field iris diaphragms are not
fully enlarged.
Fluorescence mirror unit in use does not
match specimen.
Dirt/dust on objective or filter.
Aperture and field iris diaphragms are not
fully enlarged.
Fluorescence mirror unit in use does not
match specimen.
Objective is not correctly engaged in light
path
Fluorescence mirror unit in use does not
match specimen.
Field iris diaphragm is set too small.
ND slider is not stopped at click posi-
tion.
Mercury burner is not centered or focus-
ing is defective.
of collector lens.
Connectors are not connected properly. Connect firmly.
Mercury burner is not attached.
Safety device in lamp housing is active. Set up lamp socket correctly.
Auto ignition is malfunctioning.
Remedy
Release shutter.
Disengage ND filter as required.
Engage fluorescence mirror unit cor-
rectly.
Fully enlarge aperture and iris field dia-
phragms until they circumscribe field
of view.
Use fluorescence mirror unit match-
ing specimen.
Clean thoroughly.
Fully enlarge aperture and iris field dia-
phragms until they circumscribe field
of view.
Use fluorescence mirror unit match-
ing specimen.
Make sure that revolving nosepiece
clicks correctly into place.
Use fluorescence mirror unit match-
ing specimen.
Fully enlarge field iris diaphragm.
Make sure that ND slider clicks prop-
erly into place.
Center mercury burner or perform fo-
cusing adjustment.
Clean them.
Connect firmly.
Attach mercury burner.
Set main switch of power supply unit
to "
" (OFF) then " I " (ON) again. (OFF/
ON can be repeated.)
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