1-30 (No.YA063)
4.8.4 VIDEO CIRCUIT
Item
Measuring
instrument
Test point
Adjustment part
Description
WHITE
BALANCE
Signal
generator
Remote
control unit
[2. V/C]
2.CUTOFF R
3.CUTOFF G
4.CUTOFF B
5.WDR R
6.WDR G
7.WDR B
(Do not adjust)
(1) Receive a black and white signal (colour off).
(2) Set the ZOOM mode to FULL.
(3) Set the PICTURE MODE to STD.
(4) Set the COLOUR TEMP to NORMAL.
(5) Select 2.V/C from the SERVICE MENU.
(6) Each select 2.CUTOFF R, 3.CUTOFF G, 4.CUTOFF
B and adjust the screen until the black portion in the
screen becomes black.
(7) Each select 5.WDR R, 6.WDR G and adjust the
screen until the white portion in the screen becomes
white.
NOTE:
Do not adjust 7. WDR B
(8) Press the [MENU] key and memorize the set value.
(9) Change the contrast and brightness from low-light to
high-light and check that the tracking of the white
balance is good.
SUB BRIGHT
Remote
control unit
[2. V/C]
8. BRIGHT
(1) Receive the any broadcast.
(2) Set the ZOOM mode to FULL.
(3) Set the PICTURE MODE to STD.
(4) Select 2.V/C from the SERVICE MENU.
(5) Select < 8.BRIGHT >.
(6) Set the initial setting value of < 8.BRIGHT >.
(7) If the brightness is not the best with the initial setting
value, make fine adjustment until you get the best
brightness.
(8) Press the [MENU] key and memorize the set value.
SUB
CONTRAST
Remote
control unit
[2. V/C]
9. CONT.
(1) Receive the any broadcast.
(2) Set the ZOOM mode to FULL.
(3) Set the PICTURE MODE to STD.
(4) Select 2.V/C from the SERVICE MENU.
(5) Select < 9.CONT >.
(6) Set the initial setting value of < 9.CONT >.
(7) If the contrast is not the best with the initial setting
value, make fine adjustment until you get the best
contrast.
(8) Press the [MENU] key and memorize the set value.
