Nikon ECLIPSE E800 Instructions Manual page 19

6. Troubleshooting Tables
Problem Cause
Countermeasures
Viewing is poor (too much or too
little contrast, poor resolution)
(The details cannot be viewed
clearly)
The cover glass is too thick.
Use the specified type of cover glass
(thickness: 0.17 mm).
There is no cover glass.
There is no oil on the tip of an oil-immersion
type objective.
Apply Nikon immersion oil. (p. 23)
The specified immersion oil is not being used.
There are bubbles in the immersion oil.
Remove the bubbles. (p. 24)
There is immersion oil on the tip of a dry-
type objective.
(Especially in the case of a 40x objective)
Clean the objective. (p. 24)
The compensation ring on an objective with a
compensation ring has not been adjusted.
Adjust the compensation ring according to
the cover glass.
There is dirt or dust on the lens, condenser,
objective or specimen.
Clean the components. (p. 38)
Uneven focus
The revolving nosepiece has not been installed
properly.
Install the revolving nosepiece properly.
(p. 30)
The revolving nosepiece has not been rotated
until it has clicked into place.
Turn the revolving nosepiece until it dicks into
place. (p. 9)
The specimen is not secured in place on the
stage.
Install the specimen properly on the
specimen holder on the stage.
The stage has been installed on a slant.
Install the stage correctly. (p. 29)
Image flows
The revolving nosepiece has not been installed
properly.
Install the revolving nosepiece properly.
(p. 30)
The revolving nosepiece has not been rotated
until it has clicked into place.
Turn the revolving nosepiece until it clicks into
place. (P- 9)
The specimen is not secured in place on the
stage.
Install the specimen properly on the specimen
holder on the stage.
The condenser is not centered.
Center the condenser. (p. 18)
The stage has been installed on a slant. Install the stage correctly. (p. 29)
Image is yellowish
An NCB1 1 filter is not being used.
Use the NCB 11 filter. (p. 21)
The lamp voltage is too low.
Set the brightness adjuster to "PRESET' or to
position "9", and then adjust the brightness
through the ND filter combination. (p. 23)