18
19
TROUBLESHOOTING GUIDE
5
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. If you cannot solve the problem after checking the entire
list, please contact your local Olympus representative for assistance.
Problem
Cause
Remedy
Page
1. Optical system
a) Burner is ON but nothing can be
seen from eyepieces or light is
dark.
Shutter is closed.
Open the shutter.
4
ND filter is engaged in light path.
Remove ND filter as required.
16
Fluorescence mirror unit is improperly
engaged in light path.
Engage it correctly.
4
Aperture and field iris diaphragms are
not fully enlarged.
Center aperture iris diaphragm and
field iris diaphragm, and then fully
enlarge aperture iris diaphragm and
field iris diaphragm.
11,12
Fluorescence mirror unit does not
match specimen (excitation wavelength
or fluorescence wavelength).
Use fluorescence mirror unit matching
specimen.
10
b) Image is low quality, not sharp or
poor in contrast.
Dirt/dust on objective or filter.
Clean thoroughly.
3
Fluorescence mirror unit does not
match specimen.
Use fluorescence mirror unit matching
specimen.
10
c) Field of view is obscured or not
evenly illuminated.
Objective is not correctly engaged in
light path.
Make sure that revolving nosepiece
clicks properly into place.
–
Fluorescence mirror unit is not correctly
engaged in light path.
Engage fluorescence mirror unit
correctly in light path.
–
Field iris diaphragm is set too small.
Center aperture iris diaphragm and
field iris diaphragm, and then fully
enlarge field iris diaphragm.
11
ND slider is not stopped at click
position.
Make sure that ND slider clicks
properly into place.
16
Mercury burner is improperly centered. Center mercury burner.
13,14
d) Field contains dark, spot-like areas. Dirt or dust on burner or on burner side
of collector lens.
Clean them.
3
2. Electrical system . If the following remedy does not solve the problem, please contact Olympus.
a) Main switch cannot turn system ON. Power cord is not connected properly. Connect firmly.
–
b) Even when the main switch is set
to “
I
” (ON), the mercury burnerdoes
not light.
Connectors are not connected properly. Connect firmly.
–
Mercury burner is not attached.
Attach mercury burner.
26
Safety device in lamp housing is
active.
Set up the lamp socket correctly.
26
Auto ignition is malfunctioning.
Set main switch of power supply unit to
“ ” (OFF) then “
I
” (ON) again. (OFF/
ON can be repeated.)
11
c) Mercury burner flickers or is dark.
It is soon after ignition.
Wait for 10 minutes or more after
ignition.
11
Burner life has expired.
If hour counter indicates 300 hours
(USH-103OL), replace mercury burner.
26
Burner is deviated from optical axis.
Center mercury burner.
13,14
