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PVM-8041Q/8044Q
SECTION
3
SET-UP
ADJUSTMENTS
•
The
following adjustments should be
made when
a
complete
realignment
is
required or a
new
picture
tube
is
installed.
•
These
adjustments should be
performed
with
rated
power
supply
voltage unless otherwise
noted.
The
control
and
switch
below
should be
set
as
follows unless otherwise
noted;
CONTRAST
control
80%
BRIGHTNESS
control
50%
Perform
the
adjustments
in
order
as follows:
3-1.
Beam
Landing
3-2.
Convergence
3-3.
Focus
3-4.
White
Balance
Note:
Test
equipment
Required.
1.
Color
Bar/Pattern
Generator
2.
Degausser
3.
Color Analyzer
(Minolta)
4.
Luminance
Level
Meter
3-1.
BEAM
LANDING
Precaution
1.
Set the side
of
the unit
with
the
PICTURE
TUBE
so
that
it
faces
east
or
west
in
order
to
reduce
the influence
of
external
magnetic
force.
2.
Turn
the
power
switch
for the unit
ON
and
erase the
magnetic
force
using a degausser.
(1)
Beam
Landing
1
.
Receive an
entirely
white
signal
with
the pattern generator.
CONTRAST
MAX.
BRIGHTNESS
set ea.sy to
observe
2.
Adjust
the
white
balance,
G2
voltage
and convergence
roughly.
3.
Loosen
the deflection
yoke mounting
screw,
and
set
the purity
control
to the
center
as
shown
in
Fig.3-1.
4.
Switch over
the pattern
generator
to
green.
5.
Move
the deflection
yoke backward, and
adjust
with
the purity
control
so
that
green
is
in
the center
and
blue
and
red
are
at
the
sides,
evenly. (Fig.3-2)
6.
Move
the deflection
yoke
forward,
and
adjust so
that
the entire
screen
becomes
green.
Repeat
5
to
7
as to red
and
blue.
7.
When
landing
at
the corners
is
not
right,
correct
by
using
the
magnet.
(Fig.3-3)
8.
When
the position
of
the deflection
yoke
is
determined,
tighten
it
with
a deflection
yoke mounting
screw.
CAUTION:
When
correction
magnet
is
used,
be sure
to
degauss
the
unit.
Purity control
corrects
this
area.
Disk
magnets
or
rotatable disk
magnets
correct
these area (a-d).
Deflection
yoke
positioning
corrects
these
areas.
—
16
—
Fig.3-3
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