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The following adjustments should be made when a
l
complete realignment is required or a new picture
tube is installed.
These adjustments should be performed with rated
power supply voltage unless otherwise noted.
Controls and switch should be set as follows unless
otherwise noted :
PICTURE control . . . . . . . . . . . . RESET
BRIGHTNESS control . . . . . . . . . . center
.
. . . .
. . . . .
Preparations
:
In order to reduce the influence of geomagnetism
on the set's picture tube face it east or west.
Switch on the set's power and degauss with the
l
degausser.
1 .
Input the white signal with the pattern generator.
Contrast
normal
Bightness
Position net ass'y as shown in Fig 3-2.
2 .
Set the pattern generator raster signal to red.
3 .
Move the deflection yoke to the rear and adjust
4 .
with the purity control so that the red is at the
center and the blue and the green take up equally
sized areas on each side.
(See Figures 3-l through 3-3.)
Move the deflection yoke forward and adjust so
5 .
that entire screen is red. (See Figure 3-l.)
Switch the raster signal to blue, then to green and
6 .
verify
the
condition.
When the position of the deflection yoke has been
7 .
decided, fasten the deflection yoke with the screws.
If the beam does not land correctly in all the
a .
corners, use a magnet to adjust it.
(See Figure 3-4.)
SECTION 3
SET-UP ADJUSTMENTS
Perform the adjustments in order as follows :
1. Beam Landing
2. Convergence
3. Focus
4. White Balance
Note : Test Equipment Required.
. . . . . .
1. Color-bar/Pattern Generator
2. Degausser
3. Oscilloscope
. . . . . . . . . . . . . .
. . .
. . . . . .
Neck assy
I
i
Purity control
G 2 G 3
rotatable
disk
magnets correct
these areas(a-d).
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