ADJUSTMENTS
PROCEDURES
N
6.
Horizontal
Width
Adjustment
(1)
Input
the
PC-98
(400
line)
RGB
signal.
(2)
Set
Scan
Select
to
OVERSCAN
mode.
Adjust
either
the
remote
control
or
VR4002
(DEF
SUB
PWB)
to
vertical
height
is
100%
scan.
(3)
Set
the
remote
control
H.
Width
to
MAX
position
and
adjust
VR9004
(DEF
SUB
PWB)
so
that
horizontal
width
equals
100%
scan.
(4)
If
there
is
side
pincushion
distortion,
adjust
either
the
remote
control
or
VR5505
(pCOM/V
PWB)
to
straighten
out
the
right
and
left
vertical
lines.
Then
Adjust
VR9004
as
outlined
in
Step
(3).
7.
Vertical
Linearity
Adjustment
(1)
Input
the
VGA3
(480
line)
crosshatch
signal
to
the
RGB
input.
(2)
Set
the
Scan
Select
in
the
UNDERSCAN
mode
and
adjust
the
remote
control
or
VR4002
of
the
DEF
SUB
PWB
so
that
the
vertical
height
equals
95%
scan.
Note:
Upper
and
Lower
blanking
sections
should
be
10±2mm
each.
(3)
Adjust
VR403
(DEF
SUB
PWB)
for
Optimum
Vertical
linearity
performance
Make
sure
that
the
circles
are
same
size
at
the
top
and
bottom
of
the
image.
8.
Vertical
Height
Adjustment
(1)
Input
the
VGA
350
line
mode.
(2)
Set
the
Scan
Select
SW
in
the
UNDERSCAN
mode
and
set
the
remote
control
or
V.
Height
to
MAX
position.
(3)
Adjust
the
VR4002
of
the
DEF
SUB
PWB
so
that
the
vertical
amplitude
becomes
100%
scan.
»
9.
Side
Pin
Cushion
Adjustment
(1)
Input
the
VGA
480
line
mode.
(2)
Press
the
NORMAL
button
of
the
remote
control
raster
control
system.
(3)
Set
the
Scan
Select
SW
in
the
UNDERSCAN
mode
and
adjust
the
remote
control
so
that
the
vertical.
Note:
95±1%
scan
means
that
there
are
two
black
vertical
stripes
on
either
side
of
the
image
measuring
14±3mm
in
width.
Do
not
tuch
the
side
pin
button.
(4)
Adjust
VR5504
of
the
pCOMA/
PWB
so
that
the
video
center
transverse
line
becomes
straight.
(5)
Adjust
VR5505
of
the
pCOMA/
PWB
so
that
the
video
left
transverse
line
becomes
straight.
(6)
Adjust
VR5401
of
the
DEF/HV
PWB
so
that
the
video
left
transverse
line
becomes
straight.
10.
Keystone
Adjustment
(1)
Input
the
VGA
480
line
mode
cress
hatch
signal.
(2)
Set
the
Scan
Select
in
the
UNDERSCAN
mode
and
adjust
the
remote
control
so
that
the
vertical
height
become
95%±1
%.
(3)
Adjust
the
remote
control
to
vertically
center
the
image.
(4)
Adjust
VR5501
(pCOM/V
PWB)
to
minimize
trapezoidal
distortion
11.
Image
Tilt
Correction
(1)
Input
the
VGA
480
line
mode
crosshatch
signal.
(2)
Set
the
Scan
Select
SW
in
the
mode
and
adjust
the
remote
control
so
that
the
vertical
height
becomes
95±1
%.
(3)
Adjust
VR5503
(pCOMA/
PWB)
to
minimize
image
tilt.
19
Содержание PG-2740
Страница 41: ...I I f ...
