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8.
COMPOSITE VIDEO WHITE BALANCE
ADJUSTMENT
(NTSC)
. Push the system changeover SW, NTSC on.
. Input the pedestal signal (Black-level pattern) to Video
A or B terminal.
. Adjust the CONTRAST
VR on the front panel, then ad-
just the COMPOSITE
WHITE
BALANCE
VR (R1778)
so that the white balance on the picture will be stable.
ADJUSTMENT OF RGB BRIGHT & WHITE
BALANCE
. Push the Input changeover SW, ANALOG
RGB on.
. BRIGHT,
CONTRAST,
COLOR
adjustment
and
the
contrast
adjustment
of
ANALOG
RGB
should
be
already finished.
. Input the ANALOG
RGB
signal
(cross-hatch pattern)
to each RGB Input terminal.
. Connect
an oscilloscope to TP-47B on the CRT Socket
PB Ass'y. (Voltage range is fixed to 10V).
. Adjust the
RGB
BRIGHT
VR
(R1768)
so that the
Bright pulse corresponds
to the Black level, as shown
in the figure below.
Bright pulse corresponds
to the
ee
BLACK LEVEL
. Connect
each
oscilloscope
(two
waveforms)
simu-
itaneously
to TP-(B-Y) and TP-(R-Y)
on the Signal PB
Ass'y. (Power supply range is fixed to 5mV)
. Adjust
R
LEVEL
VR
(R1737)
and
RGB
WHITE
(10mVp-p)
| VM-R200PSN
= ADJUSTMENT OF COMPONENT WATE
BALANCE
. Push
the Input changeover SW, Component
Level on.
. Adjustment of white balance should be already finished.
. Input 1.0 Vp-p luminance signal to the Y Input terminal
of the component.
. Connect
each oscilloscope (two waveforms) simultane-
ously to TP-(B-Y) and TP-(R-Y) on the Signal PB Ass'y.
(Voltage range is fixed to 5mV)
. After adjusting, confirm that the white balance will be
stable on the picture even if the COLOR/MONO SW on
the front panel may be switched ON or OFF.
i
omens ey eee Oe eee
pov
Lee
SIGNAL LEVEL
{*
. After adjusting, confirm that the white balance will be
stable on the picture even if the COLOR/MONO SW on
the front panel may be switched ON or OFF.
ADJUSTMENT OF APERTURE CONTROL
. Push the Input changeover SW Video A or B on. (Choose
each corresponding switch that is input to either Video
A terminal or B terminal on.)
. Turn the APERTURE
VR on the front pane! to we click
position.
. Input
NTSC
monochrome-scope
pattern
to Video A
terminal or B terminal.
. Connect an oscilloscope between TP-Y and GND on the
Signal PB Ass'y.
. Adjust the SUB
APERTURE
VR on the front panel,so
~
that
when
the
low-pass
component
of the signal
is
400
mVp-p,
high-pass component
of the four vertical
lined
area
of monochrome-scope
pattern
will
be 30
mVp-p.
30mVp-p
400mVp-p
(No, 50058) 17
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