Sanyo LCD-19XR9DA(C), Service Manual

Page: 9 / 51

5
）
Adjust items “
R-GAIN
,
G-GAIN
,
B-GAIN
” to set chromatic coordinates of
14
th
scale as
(
272, 278
);
6
）
Adjust items “
R-OFFSET
,
G-OFFSET
,
B-OFFSET
” to set chromatic coordinates of
4
th
scale
as (
272, 278
);
7
）
During adjustment, make sure that chromatic coordinates of bright scale are (
X=272±10
,
Y=278±10
) and chromatic coordinates of dark scale are (
X=272±10
,
Y=278±10
);
8
）
Move cursor to item “
COPY ALL
” again to copy data of white balance to other channels
except
DTV
;
9
）
Check if chromatic coordinates of
HDMI NORMAL
and
WARM
meet the requirements of
error allowance (dark scale:
±10
, bright scale:
±10
) or not, otherwise adjust items
“
R_GAIN/B_GAIN/R_OFF/B_OFF
” to meet them and then save the data;
10
）
Switch to other channels (
ATV, AV
，
COMPONENT
，
D-SUB
), check if chromatic coordinates
of
COOL, NORMAL
and
WARM
meet the requirements or not, if not, adjust them
respectively in the same way of HDMI and with 16 gray scale signal; exit menu “
W/B
ADJUST
” after adjustment, the data will be save automatically;
11) DTV adjustment: switch to
DTV
channel, select
16
gray scale program, enter into factory
menu, do adjustment following above step 5, 6, 7;
12) Please refer to the adjusting rules as follows:
B
Gun: coordinates of
X
and
Y
will increase when
B
gun is adjusted downwards;
coordinates of
X
and
Y
will decrease when
B
gun is adjusted upwnwards;
R
Gun: adjusting
R
gun will effect coordinate of
X
, and value of
Lv
slightly;
coordinate of
X
will increase when
R
gun is adjusted upwards;
coordinate of
X
will decrease when
R
gun is adjusted downwards;
G
Gun: adjusting
G
gun will effect coordinate of
Y
, and value of
Lv
greatly;
coordinate of
Y
will increase when
R
gun is adjusted upwards;
coordinate of
Y
will decrease when
R
gun is adjusted downwards;
Note:
Default color temperature specified by
SANYO
customer is
Normal
, adjust chromatic
coordinates of
Normal
and
Cool
in
Dynamic
picture mode; adjust chromatic coordinates of
Cool
in
Dynamic
picture mode for other customers.
4.4 Auto white balance adjustment
4.4.1 System block diagram shown as Fig. 2
PC