Sanyo LCD-19XR9DA(C) Service Manual page 9

5） Adjust items "R-GAIN, G-GAIN, B-GAIN" to set chromatic coordinates of 14
(272, 278);
6） Adjust items "R-OFFSET, G-OFFSET, B-OFFSET" to set chromatic coordinates of 4
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;
Default color temperature specified by SANYO customer is Normal, adjust chromatic
Note:
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
th
scale as
th
scale