Nikon Labophot Instruction Manual - Page 21

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Nikon Labophot Instruction Manual
VII.
TROUBLE SHOOTING TABLE
Although
nowhere
the user can find any disorder
or derangement
in the instrument,
if he
encountes
some difficulty
or dissatisfaction,
recheck the use, referring
to the table below:
1. Optical
Failures
Causes
)
Actions
• Optical
path in trinocular
tube not
) Changing-over
to the limit
fu Ily changed-over
(Refer to P. 9)
•
Revolving
nosepiece not in click-
) Revolve it to click-stop
position
stop position
(Objective
not
field
centered
in optical
path)
(No appearance
• Condenser not centered
) Centering
by using field dia-
ph ragm (Refer to P. 10)
m
too much closed
) Open it properly
on the lens
) Cleaning
objective,
eyepiece,
slide)
•
I mproper
use of condenser
, Correct
use (Refer to P. 10)
• Dirt or dust on the lens ) Cleaning
(Condenser,
objective,
eyepiece,
field lens)
• Dirt or dust on the slide
' Cleaning
ition
of condenser
) Correct
positioning
(Refer to P. 10)
• No coverglass attached
to slide or
) Correct
use (Refer to P. 13)
NCG objective
used with coverglass
resolution
or
• Too thick or thin coverglass
) Use specified
thickness
(0.17mm)
coverglass (Refer to P. 13)
soils the top of dry
, Cleaning
tive
(especially
40X)
• Dirt or dust on the lens
) Cleaning
objective,
eyepiece,
slide)
•
No immersion
oil used on immersion---+
Use immersion
oil
system objective
(Refer to P. 12)
n immersion
oil
) Remove bubbles
immersion
oil used
) Use Nikon
immersion
oil
aperture
and field diaphragm--+
Close properly
(Refer to P.l0,
11)
too much opened
•
Dirt or dust on the entrance
lens
) Cleaning
n
ring in objective
not
) Adjustment
(Refer to P. 13)
• Objective
aperture
(which
provided)
) Open properly
osed
Image quality
• Condenser
aperture
too much closed
) Open properly
(Refer to P. 10)
• Too low position
of condenser
) Bring it up to coincidence
with
field diaphragm
image
(Refer to P 10)
• Revolving
nosepiece not in c1ick-
) Revolve it to click-stop
position
stop position
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