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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
l
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
degausser.
1 .
Input the white signal with the pattern generator.
Contrast
normal
Bightness
2 .
Set the pattern generator raster signal to red.
3 .
Move the deflection yoke to the rear and adjust
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.)
4 .
Move the deflection yoke forward and adjust so
that entire screen is red. (See Figure 3-l.)
5 .
Switch the raster signal to blue, then to green and
verify the condition.
6 .
When the position of the deflection yoke has been
decided, fasten the deflection yoke with the screws.
7. If the beam does not land correctly in all the
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
Purity
Fig. 3-2.
Fig. 3-3.
control
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