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ADJUS'fABLE
LOCK
WING~.
SCREW
FIGURE
7 -
YOKE ADJUSTABLE MOUNT.
PURITY ADJUSTMENT CONTINUED
4. Turn the Green Tracking Control, Brightness and Pic·
ture Control to produce a green stripe. Use the purity
knob to center the green stripe.
5. Move the yoke to the maximum forward position.
6. Turn the Green Tracking Control to minimum.
7. Turn the Red Tracking Control clockwise to display a
Red stripe.
8. Pull the yoke toward the rear of the Tube neck until a
Red raster is displayed.
9. If the Red raster is not displayed as a pure red field, ad·
just the purity knob until a pure field is obtained.
10. Turn the Red Tracking control to minimum and ad-
vance the Green Tracking control. Observe for a pure
Green Field. Turn the Green Tracking Control to
minimum and advance the Blue Tracking Control.
Observe for a pure Blue Field.
BLACK AND WHITE TRACKING
To adjust Black and White tracking only, on a receiver that
has optimum purity and convergence, perform the Master
G-2 control adjustment procedure prior to the Black and
White Tracking procedure.
a.
Turn all three Tracking Controls to the full counter-
clockwise position. Advance the brightness con-
trol to produce a dim raster.
b.
The color of the dim raster will depend on which
gun has the highest cut off point.
7
c.
Adjust the Tracking Controls of the two missing
colors to display a white raster.
NOTE:
One Tracking Control should always be
in the full counterclockwise position.
11. Display a cross-hatch pattern on the screen and check
for yoke tilt. Tighten the yoke clamp.
12. FOCUS ADJUSTMENT ... Display and "Air Signal" and
adjust the focus control for best focus.
13. STATIC CONVERGENCE ... Repeat steps 3a and 3b.
14. DYNAMIC CONVERGENCE ...
a.
Adjust center purity and static convergence using
standard procedures, described in previous steps.
b.
Turn the Green Tracking Control to minimum
&
in-
crease the Blue and Red Tracking Controls slightly
to display a magenta cross hatch pattern.
c.
Adjust edge purity by moving the yoke in its Z
direction and rotate yoke for a straight raster.
Tighten yoke clamp.
d.
Tilt the deflection yoke vertically by holding its
back cover and converge the vertical lines at 6 and
12 o'clock. Turn in the top (12 o'clock) screw until
it seats on the C.R.T. funnel glass.
e.
Tilt the deflection yoke horizontally by holding its
back cover and converge the vertical lines at 3 and
9 o'clock. Turn in the screw which is oPPosite the
side the yoke was tilted until it seats on the C.R.T.
funnel glass.
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