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Preparations: (29 inch)
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.
3-5. BEAM LANDING
1.
as
Input the white signal with the pattern generator.
Contrast
1
Bightness
ee
. Position neck ass'y as shown in Fig 3-6.
Set the pattern generator raster signal to red.
"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 3-5 through 3-7.)
Move the deflection yoke forward and adjust so
that entire screen is red. (See Figure 3-5.)
Switch the raster signal to blue, then to green
and verify the condition.
When
the position
of the
deflection
yoke has
been decided, fasten the deflection yoke with the
screws.
If the beam
does not land correctly in all the
corners, use a magnet to adjust it.
(See Figure 3-8.)
Fig. 3-7
this area.
Purity control
corrects
Disk magnets
or
rotatable
disk
magnets
correct
these areas (a—d).
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