(No.YA263)1-31
4.9.4 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
(1) Receive a black and white signal (colour off).
(2) Set the ZOOM mode to FULL.
(3) Set the PICTURE MODE to STANDARD.
(4) Set the COLOUR TEMP to NORMAL.
(5) Select
2.V/C
from the SERVICE MODE.
(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 to 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 STANDARD.
(4) Select
2.V/C
from the SERVICE MODE.
(5) Set the initial setting value of
< 8.BRIGHT >
.
(6) If the brightness is not the best with the initial set-
ting value, make fine adjustment until you get the
best brightness.
(7) Press the
[MENU]
key to 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 STANDARD.
(4) Select
2.V/C
from the SERVICE MODE.
(5) Set the initial setting value of
< 9.CONT. >
.
(6) If the contrast is not the best with the initial setting
value, make fine adjustment until you get the best
contrast.
(7) Press the
[MENU]
key to memorize the set value.
1
2
3
4
5
6
7
8
9
REMOTE CONTROL UNIT KEY
CUTOFF R
WDR R
CUTOFF R
WDR R
CUTOFF G
WDR G
CUTOFF G
WDR G
CUTOFF B
WDR B
CUTOFF B
WDR B
Summary of Contents for AV-28H50SU
Page 41: ...2 4 No YA263 ...
