Sony PVM-9L2 Service Manual page 28

2«17.
Focus Adjustment
2-18.
V
BLK
Adjustment
Find
the
following adjustment
menu
in the layer
under
the
The
following adjustment sub
menus
are located in the
DEFLECTION
menu
of the service
mode.
layer
under
the
DEFLECTION
menu
of
the Service
Mode.
FOCUS
HDFPARA
HDF
PHASE
1.
Connect
the 480/601 crosshatch
signal to
the
LINE
A
connector.
2.
Perform the coarse focus adjustment
until focus
is
optimized
at
the center of screen using
the
following
adjustments.
RV707
on
C
board
RASTER
V
VSIZE
V
CENTER
V
BLK TOP
1
.
Connect
the
480/601 crosshatch signal to the
LINE
A
connector.
2.
Adjust the
BRIGHT
control
on
the
operation panel so
that raster
becomes
visible
on
screen.
3.
Press the
UNDER
SCAN
button
to
enter the under-
scan
mode.
4.
Press the 16:9 button
on
the
operation panel
to enter
the 4:3
mode.
(LED
tu rns
off.)
5.
Adjust
V
BLK
TOP
so that the
upper blanking
is
aligned with the video signal scarcely.
6.
Switch
the video input
to
the
575/501
signal
and
perfor
m
the
same
adju
stment.
7.
Adjust
V
BLK
TOP
of
the
menu
so
that the
upper
blanking of screen
is
immediately before
the
upper
end
of video
signal.
V
2-21
PVM-9L2