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High voltage is not adjustable but must be checked to
verify that the receiver is operating within safe and efficient
design limitations
specified:
as
Remove cabinet back.
Operate receiver for at least 15 minutes, with strong air
signal or test signal properly tuned in.
Set Brightness and contrast controls to maximum
position.
Connect an accurate high voltage meter to CRT anode.
Reading should be 24.5 + 1 SW. (at 1 .15mA)
If
correct reading cannot be obtained, check circuitry for
malfunctioning components.
FOCUS
Adjust the Focus control(R667), located on the rear of the
TV chassis, for maximum over-alldefinition and fine picture
detail with Brightness and Contrast controls set at normal
viewing levels.
VERTICAL SIZE AND LINEARITY
The Vertical Linearity control (RS 15) primarily affects the
top of the raster while the Vertical Size control (R517)
primarily affects the bottom of the raster. However,
there is some interaction between these two controls.
Vertical Centering properly positioned and Brightness and
Contrast controls adjusted for normal picture, alternately
adjust Vertical Linearity and Vertical Size controls to
obtain a linear picture.
HORIZONTAL OSCILLATOR ADJUSTMENT
The receiver should be operating for at least 10 minutes
before proceeding.
control (R618) at the center of its rotation.
and ground.
obtain minimum horizontal movement of the picture.
ground.
verify that the picture is porperly synchronized with the
control set at the mechanical
RF AGC ADJUSTMENT
The receiver should be operating for at least 10 minutes
before proceeding.
wise.
voltage starts to fall.
The +13OV Adj. control (R724) is adjusted at the factory.
However, should readjustment be required, proceed
follows:
to chass is ground.
or counter clockwise until a VTVM reading of DC 13OV.
Remove VTVM to TP?Ol.
CAUTION:
Do not exceed 130 volt for protecting
the set from failure.
H-SIZE ADJUSTMENT
Since the horizontal amplitude of receiver has been com-
pletely adjusted before delivery from the factory, normally
readjustment should not be required.
becomes necessary for any reasons, take the following steps.
than 6 percent.
CENTERING ADJUSTMENT
H-Center Adjustment:
If the picture is one-sided from right to left of the screen,
rotate H-CENT adjust control (R627) until the picture is
centered.
If the picture is one-sided from top lo bottom of the
screen, change V-CENT adjust tip to adjust so that the
picture is centered.
PINCUSHION ADJUSTMENT
The pin-cushion adjustments are preset at the factory and
normally need no further adjustment. However, if necessary,
corrections can be made by adjusting for straight horizontal
lines at the top and bottom of the rester.
The receiver should be allowed to operate for at least five
minutes with a cross-hatch pattern displayed on the screen.
Top and Bottom Pincushion Adjustment
curvature of the horizontal lines to the center of the
screen.
to straighten out the horizontal lines at both the top and
bottom of the screen.
Side Pincushion Adjustment
cushion distortion is at the centre of screen.
for pincushion distortion until vertical lines at both sides
of screen are straight .
3
as
and/
However, if it
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