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| AV-27718
ePICTURE TUBE
The picture tube is a precision in-line gun type. For this picture
tube, dynamic convergence is carried out by a precision deflection
yoke
which
eliminated
the
use
of convergence
yoke
and
convergence
circuit. The adjustment of picture tube is therefore
made easier as only the adjustment of static convergence by using
a magnetic is enough. The deflection yoke and purity/convergency
magnets assembly has been set at the factory and requires no field
&
adjustments. However,
should the assembly be accidentally jarred
>
by
|
CONVERGENCE
(EXAMPLE)
——
Six POLES
CONVERGENCE
MAGNETS(mark"6")
eCOLOR
PURITY & VERTICAL CENTER
Loosen yoke retaining screw ( Fig. B-1 ) . With a sharp knife cut
between
the picture
tube
and
the wedge.
Remove
wedges
completely and clean off dried adhesive
from the picture tube.
YOKE RETAINNING
PAINT is used to lock the tabs of the purity/convergence magnet
SCREW
PURITY
(As to models equipped with a magnet locking ring,
beforehand
(REAR VIEW)
loosen it. )
;
3.
Move the yoke slowly backward.
4.
Tur the GREEN
CUT-OFF
VR to maximum
and the RED
and BLUE
CUT-OFF
VRs to minimum.
Then
adjust the
SCREEN VR so that the green band can be seen best.
(Fig.
B-3 )
6.
Check the vertical center position by displaying a horizontal
line. ( Select the CUT-OFF SERVICE SWITCH from N to S
and
a HORIZONTAL
LINE will appear.
) Unless correct,
bring it to the nearest center by rotating the two tabs,
kept at
an angle, together in either direction. ( Fig. B-4 )
8.
Move the yoke slowly towards the bell of the tube so that the
whole surface of the picture tube is filled with a green pure
raster.
9.
Turning RED
or BLUE
CUT-OFF
VR
to maximum
and
GREEN
CUT-OFF VR to minimum, make sure of a red or
HORIZONTAL LINE
time) .
(identified with a
white notch)
Fig. B-3
(FRONT VIEW)
(As to models equipped with a magnet locking ring, secure it and
Fig. B-4
(No.50577) 35
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