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SUB
CONTRAST
ADJUSTMENT
1.
Tune
the
receiver
to
the
PAL
colour
bar
pattern.
2.
Set
colour
control
to
the
minimum,
and
contrast
to
the
minimum.
3.
Connect
the
oscilloscope
to
the
test
point
(+)
"TP-6G"
and
(-)
"TP-6E".
4,
By
using
VR272,
adjust
,,A,,
to
0,25
Vp_p.
By
using
VR271,
adjust
"B"
to
0.25 A0.02
Vp–p.
Fig,13
l-r
RASTER
CENTER
ADJUSTMENT
[ SCREEN
VR
ADJUSTMENT]
1.
Tune
the
receiver
to
the
PAL
circular
pattern.
2.
Set
brightness
and
colour
controls
to
the
normal,
and
contrast
to
the
maximum.
3.
Set
the
screen
VR
for
the
retrace
lines
to
be
visible
on
screen.
[ RASTER
CENTER
ADJUSTMENT]
3.
By
using
VR461,
H-with
to
be
minimum.
4.
By
using
the
raster
center
switching
tip
(KHC-1/2/3),
adjust
raster
center.
(a=b)
Fig.14
GREY
SCALE
ADJUSTMENT
[ SCREEN
VR
ADJUSTMENT]
1.
Set
brightness
and
colour
controls
to
the
normal,
and
contrast
to
the
maximum.
2,
Connect
the
oscilloscope
to
the
test
point
(+)
"lC601-12pin"
and
(-)
"TP-6E",
3,
By
using
the
screen
VR,
set
"a"
to
DC180V.
Fig,15
OZ
BLACK
LEVEL
[ WHITE
POINT
ADJUSTMENT]
1.
Tune
the
receiver
to
the
white
pattern.
2.
Set
brightness
control
to
the
normal
contrast
to
the
maximun,
and
colour
to
the
minimum.
3.
By
using
VR273
and
VR274
adjust
the
white
balance.
SUB
BRIGHT
ADJUSTMENT
1,
Tune
the
receiver
to
the
PAL
circular
pattern.
2.
Set
brightness
and
colour
controls
to
the
normal,
and
contrast
to
the
minimum.
3.
By
using
VR272,
adjust
the
voltage
to
1.30*0.005 v.
SUB
COLOUR
ADJUSTMENT
1,
Tune
the
receiver
to
the
PAL
colour
bar
pattern.
2,
Set
brightness
and
colour
controls
to
the
normal,
and
contrast
to
the
maximum.
3.
Connect
the
oscilloscope
to
the
test
point
(+)
"TP-6B"
and
(-)
"TP-6E".
4.
By
using
VR270,
adjust
"A"
to
the
zero.
A=O
Fig.16
J
—
1-
–lo–
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