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4.6.4 VIDEO CIRCUIT
Measuring
Item
instrument
WHITE
Signal
BALANCE
generator
adjustment
Remote
control unit
COLOUR
Signal
CUTOFF LEVEL
generator
adjustment
Remote
control unit
PAL
Signal
Y DELAY
generator
adjustment
Remote
control unit
SECAM
Signal
Y DELAY
generator
adjustment
Remote
control unit
NTSC
Signal
Y DELAY
generator
adjustment
Remote
control unit
1-20 (No.52139)
Test point
Adjustment part
WdR
WdG
WdB
CuR
CuG
CuB
YDP
YDS
YDN
Description
(1) Receive a black & white signal.
(2) Enter the SERVICE MENU.
(3) Press the [GREEN] key, then enter the VIDEO
adjustment group.
(4) Select WdR, WdG and WdB respectively.
(5) Adjust WdR, WdG and WdB respectively, until the
white part turns to pure white without any other
colour.
(6) Press the [INFORMATION] key and memorize the
set value.
(1) Receive a cross-hatch signal.
(2) Enter the SERVICE MENU.
(3) Press the [GREEN] key, then enter the VIDEO
adjustment group.
(4) Select CuR, CuG and CuB respectively.
(5) Adjust CuR, CuG and CUB respectively, and set the
values of these items as 64 (contrast).
(6) Press the [INFORMATION] key and memorize the
set value.
(1) Receive a PAL colour bar signal.
(2) Enter the SERVICE MENU.
(3) Press the [GREEN] key, then enter the VIDEO
adjustment group.
(4) Select YDP.
(5) Adjust YDP till the colour transients on the colour bar
pattern becomes as sharper and possible as colours
between transients do not mix with each other.
(6) Press the [INFORMATION] key and memorize the
set value.
(1) Receive a SECAM colour bar signal.
(2) Enter the SERVICE MENU.
(3) Press the [GREEN] key, then enter the VIDEO
adjustment group.
(4) Select YDS.
(5) Adjust YDS by pressing till the colour transients on
the colour bar pattern becomes as sharper and
possible as colouers between transients do not mix
with each other.
(6) Press the [INFORMATION] key and memorize the
set value.
(1) Receive a NTSC colour bar signal from an external
source (e.g. FRONT AV : EXT 4).
(2) Enter the SERVICE MENU.
(3) Press the [GREEN] key, then enter the VIDEO
adjustment group.
(4) Select YDN.
(5) Adjust YDN by pressing till the colour transients on
the colour bar pattern becomes as sharper and
possible as colouers between transients do not mix
with each other.
(6) Press the [INFORMATION] key and memorize the
set value.
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