White Balance Adjustment - Sony KLV-23HR1 Service Manual

11. Adjust value of the AD_GAIN_D4_PB as follows with read-
ing 2 registers of sony_input_b_cb_min
and sony_input_ b_cb _max from the ECS.
Reference
item
sony_input_b_cb_min+sony_input_b_cb_max
2
sony_input_b_cb_min
sony_input_b_cb_max
12. Repeat step 2 to 11 until the detection set value in step 3 to 5,
7, 9 and 11 above are obtained.
13. Perform the Service Save.
2-6. Shift of each OFFSET value
Adjust the adjustment value to -3 against the following black
level adjustment register.
Adjustment Adjustment
condition register
230 ± 1 AD_OFFSET_D4_PB
230 -5 + 0
230 -0 +5

2-7.White Balance Adjustment

• Set to PICTURE_MODE=2(Pro) and change to Register Set-
ting as follows.
Register Save mode
Setting
Picture Save PICTURE
BRIGHTNESS
COLOR_INDEX
DYNA_PICT
PW_HDPIC_ENABLE
GAMMA
PW_DCTRANS_ENABLE
U_BACKLIGHT
Default Save ECO_MODE
Color Save R_DRIVE
G_DRIVE
B_DRIVE
R_BKG
G_BKG
B_BKG
• Input 22% All-gray signal into the video input.
Note: Perform the White Balance Adjustment with ECS.
2-7-1.White Balance Adjustment of color temperature
"Cool"
1. Set to PICTURE_MODE=2(Pro) and change to Register Set-
ting as follows.
2. Show 40%x25% Window pattern into video input.
3. Input 22% gray signal (above Window pattern).
4. Adjust the Color Temperature (R_BKG, B_BKG) to the fol-
lowing value.
Background Adjustment Standard
Item Setting
x 0.275 ± 0.004
y 0.279 ± 0.004
Y No object
5. Input 70% gray signal (above Window pattern).
6. Adjust the Color Temperature (R_DRIVE, B_ DRIVE) to the
following value.
High light Adjustment Standard
Item Setting
x 0.264 ± 0.003
y 0.267 ± 0.004
Y No object
7. Repeat step 1 to 4 until the detection set value in step 4 and 6
above are obtained.
8. When unadjusted, set G_DRIVE to 124 and retry from step 1.
9. Perform the Color Save.
ItemSetting
100 (max)
50 (center)
1 ("Cool")
0 (off)
0 (off)
0 (Pro standard)
0 (off)
10 (max)
1 (standard)
128 (initial value)
128 (initial value)
128 (initial value)
128 (initial value)
128 (initial value)
128 (initial value)
KLV-23HR1 (UC) 2-4