Sharp LC-32LE250M Service Manual page 16

LC-32LE250M
B. WHITE BALANCE ADJUSTMENT
a) White Balance Adjustment
ITEM
1 Setting Backlight : MAX
AV Mode : DYNAMIC
Active Backlight : OFF
Set
meter on the centre of
the screen
2 Auto [command]
Adjustment Adjustment Mode
KRSW0001
KKT10037
FACT0001
Setting
KYOF0001
OSDS0001
SBSL16_ _
Multi point adj. Mode
MSET0000
WBI20255
Point 2
WBI20229
MG2G****
MG2B****
MG2R****
Point 1
WBI10051
MG1G****
MG1B****
MG1R****
Set Max.Level
MGMG****
MGMR****
MGMB****
Write
MSET0003
CONDITION
For the details of white balance adjustment procedure, please refer to white
balance adjustment spec for Kameyama model.
1. Confirm the set condition.
the luminance
2. Connect the white balance jig.
3. Through RS-232C command, adjustment mode screen is displayed.
[Adjustment Procedure]
1. Using the R/C, set the LCD TV to adjustment mode.
2. Measure Max brightness (L
3. Calculate min. brightness (L
4. Measure Point 2 brightness (L
5. Set the reference value R,G,B of Point 2 (Ref.2) =
where P2 = 255 x [(L
Set the specified gradation for point 2, fix the most faint colour to get
6.
reference value, adjust others 2 colour to minus adjustment for
reference value of point 2.
7. Measure Point 1 brightness (L
8. Set the reference value R,G,B of Point 1 (Ref.1) =
where P1 = 255 x [(L
9. Set the specified gradation for point 1. Set G of point 1 to the
value [(Ref.1 x G value of point 2 / Ref.2), with fractions rounded] and
adjust RB to the reference value of point 1.
10. Set the G of point Max. to the default value (4080 x G value of point 2 /
Ref.2). Set the R,B Max. value [G
of point 2)].
11. Adjusted value is writing at [command] MSET0003.
12. Shut down the AC power.
• Initial value at RGB 2 point :
• Initial value at RGB 1 point :
PROCEDURE
).
max
) = L /3000.
min max
).
high
– L ) / (L – L
high min max min
).
low
– L ) / (L – L
low min max min
– G value of point 2 + (R,B value
max
3664
816
6 – 4
3664 x (229 / P2)
1/2.2
)]
816 x (51 / P1)
1/2.2
)]
default