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Nikon Labophot Repair Manual

Nikon Labophot
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AOJUSTMENT
8. Adjustment
of
Brightness Contrai Circuit
12)
Tum the
dia!
of power switch S
1
(@)
to
make
the indication
of
DC
ammeter
M
1
(
@ ) minimum.
In
this case, the voltage
of
variable resistor
VR
2
( @ )
will
be
maximum.
13)
If
the
DC
ammeter M
1
C@)
indicates a
value
not higher than 1.8, tum
the
shaft of
variable resistor
VR
(@
)
in
the printed circuit, counterclockwise,
and
if
it
indicates
a higher
value
than 2.5, slowly tum
the
shaft clockwise, until the meter indicates a
value
within the
range
1.8
- 2.5V.
14) Fully tum the
dia!
of
power switch S
1
(e)
to
make
sure that the brightness
of
the lamp and
swing
of
the needle in
the
DC
ammeter M
1
(
@ ) changes smoothly
over 11.5.
- 45 -

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Preview: Instruction Manual
Instruction Manual27 pages

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Nikon Labophot Specifications

General IconGeneral
IlluminationBuilt-in transmitted light, halogen lamp
StageMechanical stage with coaxial controls
FocusCoarse and fine focus knobs
Observation MethodsBrightfield, Phase Contrast
CondenserAbbe condenser
Power SupplyAC 100-240V, 50/60Hz

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