Troubleshooting; Viewing Problems And Control Problems - Nikon Eclipse LV100POL Instructions Manual

Troubleshooting

Improper use of the microscope may adversely affect performance, even if the microscope is not damaged. If
any of the problems listed in the table below arise, take the countermeasures indicated.
1

Viewing Problems and Control Problems

Problem
The viewfield is
invisible, vignetted, or
uneven in brightness.
Episcopic
microscopy
Diascopic
microscopy
56
Cause
The lamp is not attached correctly.
The optical path selector lever on the
eyepiece tube is in an intermediate
position.
The optical path selector lever on the
eyepiece tube is not set to 100% (or
20%) distribution to the binocular part.
A filter is in an intermediate position.
The field diaphragm is stopped down
too far.
The nosepiece is not attached correctly.
The nosepiece is not set to a click-stop
position. (The objective is not placed in
the optical path)
The Bertrand lens is in the optical path.
The P-CL, P-CS, or P-CQ plate is not
inserted correctly.
The dummy slider, polarizer slider, or
analyzer slider is in an intermediate
position.
The bright-field/dark-field illumination
selector lever on the LV-UEPI is in an
intermediate position.
The condenser position is too low.
The condenser has not been centered.
The condenser is not attached correctly.
The top lens of the P swing-out
condenser is wrongly placed.
Countermeasure
Install the lamp correctly. (p. 51 to 52)
Set the optical path selector lever to
100% (or 20%) distribution to the
binocular part correctly.
Move the filter slider to a clickstop
position.
Open the diaphragm to a suitable size.
(p. 32 and 43)
Install the nosepiece correctly.
Rotage the nosepiece to a click-stop
position. (Set the objective into the
optical path.)
Remove the Bertrand lens from the
optical path.
Move it to the correct position.
Move the slider to a clickstop position.
Push in or pull out the lever to the limit.
Adjust the condenser focus knob so that
the field diaphragm image is focused on
the specimen surface.
Center the condenser.
Install the condenser correctly.
Move the top lens to the correct
position.
(p. 27)
(p. 24)
(p. 49)
(p. 42)
(p. 30)
(p. 30)
(p. 48)
(p. 29)