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• TP1 (AK waveform)
Setting of CHROMA LEVEL
~CHROMA
MIN
!@
/
®
100% WHITE LEVEL. --
l
l
75% WHITE LEVEL
I ~-
CHROMA
MAX
@
YPBPR
CHROMA (on the FRONT PANEL)
i) Return the CHROMA VR to PRESET and
adjust
YPBPR CHROMA
on the FRONT
PANEL so that the waveform at TPl(RK) can
be the normal R waveform.
@
VR105 (B-Y LEVEL)
i) Connect the probe to TP3(BK) on the CRT
SOCKET BOARD and adjust VR105 (B-Y
LEVEL) to obtain the normal B waveform.
ii)Connect tqe probe to TP2(GK) on the CRT
SOCKET BOARD and make sure that the
normal G waveform is obtained.
(8) Adjustments of VIDEO System - Frequency
Characteristic Check
CD
VCS0l
i) Input the NTSC(PAL) SWEEP signal(without
BURST) to_ VIDEO A input and connect the
probe to TP1 on the CRT SOCKET BOARD.
Next, preset CONTRAST as well as BRIGHT-
NESS and adjust VC501 as follows ..
NTSC : 60Hz to 7MHz
~
~dB
PAL
: 50Hz to 7MHz ~~dB
ii) Connect the probe to TP2(GK) and TP3(BK),
and make sure that each waveform at them is
within specified value.
iii) Input the PAL(NTSC) SWEEP signal(without
BURST) and the waveforms at TPl(RK), TP2
(GK) and TP3(BK) are within the specified
value.
iv)Input the SWEEP signal to Y/C input and make
sure respectively.
v) Input the SWEEP signal as the YPBPR input and
set the COLOR / MONO switch to "MONO"
position in order to make sure respectively.
- 10 -
vi) Input the SWEEP signal as the RGB input and
make sure respectively.
@
VRSOl (PHASE EQ . .)
i) Input the DOT BAR signal to the VIDEO A
input and turn on the APERTURE switch ..
ii)
Connect the probe to TP503 on the VIDEO
BOARD and adjust VRS0l(PHASE
EQ . .) so
that the edge balance can be symmetrical.
I\ .. -.
---J \__ -------·
----·-
-----···
Make the
(No good)
(Good)
level equal.
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