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2) Tum the red and blue cutoff VRs fully clockwise
3.6 WHITE BALANCE
and the green cutoff VR fully counter-clockwise.
Adjust
the screen
VR
for an easily
seen
image
SERVICE
(see Fig. 3-9).
Service lead connection
Fig, 3-15
1}
Display a monochrome pattern.
2)
Change
the
service
lead
connection
to'
the
SERVICE
position
to obtain
a single horizonta:
Fig. 3-13
line, (See Fig, 3-15),
3)
Turn the red, blue and green cutoff VRs and the
screen
VR
fully
counter-clockwise
to eliminate
luminance (see Fig. 3-9).
3)
Turn
the
two
4 pole convergence
magnets
and
adjust so that red and
blue
become
overlapped
throughout the picture area to yield magenta {Fig.
3-13).
4)
Gradually turn the screen VR clockwise to wher
4)
Turn the green cutoff VR full clockwise and adjust
single line of one of the colors appears,
the two
6 pole convergence
magnets
so that the
5)
Tur the cutoff VR of this color clockwise abou
green and magenta become overlapped throughout
10 degrees.
the pleture:aree to yield white (Fig. 3-14).
6} 'Again turn the screen VR so that this colo-
appears only faintly
7)
Adjust the other cutoff VRs so that the horizonte
line becomes white.
8)
Return the service lead to the normal position.
9)
With
a dark picture, perform
fine adjustment
te
obtain optimum white balance.
10) With a bright picture, adjust the red and gree-
drive VRs for optimum white balance.
Fig. 3-14
3.7 SUBCONTRAST AND SUB-BRIGHTNESS
* After completing purity and convergence adjustments;
Disptay a picture and set the front panel contrast anc
brightness controls to the center click positions, Adjus7
R116
(subcontrast)
and
R133
(sub-brightness)
of the
2)
Tighten the deflection yoke screw securely.
main board for optimum display.
1) Turn magnet lock clockwise {as viewed from rear
of set) and tighten securely.
3-4
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