Sanyo LCD-22XR9DZ, Service Manual

Page: 8 / 43

d) Input Component signal (
VG-848 Timing:969(PAL)
，
Pattern:918 100% color bar
), move
cursor to item “
MODE
”
，
press keys “
▲
” and “
▼
” to select item “
YPbPr
（
SD
）
”, then move
cursor to item “
AUTO ADC
” and press key “OK” to begin adjustment automatically until a
prompt “
success
” for adjustment completion is displayed;
e) Input Component signal (
VG-848 Timing:972(1080i)
，
Pattern:918 100% color bar
), move
cursor to item “
MODE
”
，
press keys “
▲
” and “
▼
” to select item “
YPbPr
（
HD
）
”, then move
cursor to item “
AUTO ADC
” and press key “OK” to begin adjustment automatically until a
prompt “
success
” for adjustment completion is displayed.
2.2 White balance adjustment
Unless specified by customer, default COOL color temperature is
12000K
, chromaticity
coordinates is
（
272
、
278
）
; default Normal color temperature is
9300K
, chromaticity
coordinates is
（
285
、
293
）
; default Warm color temperature is
6500K
, chromaticity coordinates
is
（
313
、
329
）
.
2.3 White balance adjustment processes
The set should be working above
30
minutes before white balance adjustment for it would be in
a stabler state. Use white balance apparatus
CA-210
and switch to its
BBY
channel.
a) Switch to
HDMI
channel
；
b) Press key “
SOURCE
”, then press number keys “
2
、
5
、
8
、
0
” in turn to enter into initial factory
menu;
c) Move to item “
W/B ADJUST
” and press key “
OK
” to enter into interior factory menu;
d) Input
HDMI
signal
（
VG-848 Timing: 856(1024×768/60 Hz)
，
Pattern:921 16 step Gray
）
,
move cursor to item “
MODE
”, press keys “
▲
” and “
▼
” to select item “
HDMI
”, then move
cursor to item “
TEMPERTURE
”, press keys “
▲
” and “
▼
” to select item “
Normal
”
；
e) Fix item “
G GAIN
”, adjust item “
R GAIN
、
B GAIN”
to set chromaticity coordinates of the
13
th
step is
（
285
、
293
）；
f) Fix item “
G OFFSET
”, adjust item “
R OFFSET
、
B OFFSET
” to set chromaticity coordinates
of the
4
th
step is
（
285
、
293
）；
g) During adjustment , make sure that color temperature of bright step is (
X=285±10,Y=293±15)
and color temperature of dark step is (
X=285±10,Y=293±20)
;
h) Then move cursor to item “
COPY ALL
” to copy white balance data to the other channels;
i) Check if color temperature of
COOL
and
WARM
meet requirements as below:
COOL:
allowable error of bright step is (
X±10, Y±15),
allowable error of dark step is (
X±10,Y±25);
WARM
: allowable error of bright and dark step are both (
X±10,Y±20);
otherwise adjust items “
R_GAIN /B_GAIN/R_OFF/B_OFF
” to meet requirements and then save
data;
j) Operation
“
Copy All
” should be done for mode “
Cool/Warm
” , too;
k) Switch to other channels
ATV, AV
，
COMPONENT and D-SUB
, check if color temperature of
COOL
，
NORMAL and WARM
meet requirements; otherwise adjust them respectively with
16
grey step signal and the same adjustment method as
HDMI
channel’s; exit menu “
W/B
ADJUST
” after adjustment and the data would be saved automatically;
l) Check if the picture of every channel is normal after adjustment;
m) Adjustment rules for reference as below:
adjust
B
gun: adjust
B
gun value downwards , then coordinates of
X
、
Y
will rise;
adjust
B
gun value upwards , then coordinates of
X
、
Y
will descent;
adjust
R
gun will effect the coordinate of
X
and the value of
Lv
a little: