Nikon Eclipse Ni-U, Instruction Manual

Page: 37 / 52

Chapter 2
Troubleshooting
29
T
roub
le
shooti
ng
Problem Cause Measure
The nosepiece is not attached correctly, or has
not been fully rotated to the click stop position.
Attach it correctly and rotate it to the click stop
position.
( → See Chapter 1, “3 Assembly Method, 14 Attach the
nosepiece” in the “Assembly/Maintenance”.)
The specimen is tilted relative to the stage
surface.
Position the specimen in place on the stage.
( → See Chapter 2 “2 Bright/Dark-field Microscopy - 7 Place
a specimen on the stage, and move the stage to bring the
target into view” in the “Operation”.)
The stage is tilted.
Attach the stage correctly.
( → See Chapter 1, “3 Assembly Method - 12 Attach the
stage” in the “Assembly/Maintenance”.)
The substage is tilted.
Attach the substage correctly.
( → See Chapter 1, “3 Assembly Method, 10 Attach the
substage” in the “Assembly/Maintenance”.)
One side of the field of view
(up, down, right, or left) is
not focused.
The image flows (i.e.
becomes asymmetrically
defocused when moving
the focal point)
The condenser is tilted.
Attach the condenser securely.
( → See Chapter 1, “3 Assembly Method, 13 Attach the
condenser” in the “Assembly/Maintenance”.)
Interpupillary adjustment has not been
performed.
Perform interpupillary adjustment.
( → See Chapter 2 “2 Bright/Dark-field Microscopy - 10
Adjust the interpupillary distance” in the “Operation”.)
Images in right and left
eyepieces are not
coincident.
Diopter adjustment has not been performed.
Perform diopter adjustment.
( → See Chapter 3 “4 Adjusting the Diopter” in the
“Operation”.)
Diopter adjustment has not been performed.
Perform diopter adjustment.
( → See Chapter 3 “4 Adjusting the Diopter” in the
“Operation”.)
Eyes become fatigued.
Brightness is inadequate.
Adjust the brightness using the brightness control
knob or ND filters to attain a suitable brightness.
(See Chapter 3, “1 Adjusting the Brightness of a Diascopic
Image” in the “Operation”.)
The specimen holder is not securely-fixed to the
stage.
Fix the holder securely.
( → See Chapter 2 “2 Bright/Dark-field Microscopy - 7 Place
a specimen on the stage, and move the stage to bring the
target into view” in the “Operation”.)
The specimen does not
move smoothly.
Rotating torque of the stage knob is set too
heavy.
Adjust to the appropriate torque weight.
( → See Chapter 3 “3 Bringing the Target into the Optical
Path - Adjusting the knob rotation torque” in the
“Operation”.)
Difficult to focus.
Rotating torque of the coarse focus knob is set
too heavy.
Adjust to the appropriate torque weight.
( → See Chapter 3 “2.2 Focus Knobs on the Main
Body - Adjusting the rotating torque of the coarse focus
knob” in the “Operation”.)
The optical path does not
switch when the
quadrocular tilting tube is
used.
The quadrocular tilting tube is fastened.
Unfasten it. (Remove the tightening screw for the
quadrocular tilting tube.)
( → See Chapter 1 “3 Assembly Method - 7 Attach
the quadrocular tilting tube and DSC zooming port
for quadrocular tube” in the
“Assembly/Maintenance”.)