Sharp LC-60H20T Service Manual page 19

LC-60H20T/LC-70H20T
MGMB****
(18) Adjusted value is writing at [command]
(19) Set the G of point Max. to the default value
(20) Calculate the slope R2
(21) Calculate the correction value
(22)
(23)
(24)
(25)
(26) Shut down the AC power.
[Adjustment value]
Teaching set send by engineering dept is set as
reference.
[Reference values for adjustment reference]
Equipment : Luminance meter [Minolta CA-210]
Point
2 ref.
values
Point
1 ref.
values
Ref. : For inspection, set the LCD TV as below.
RB to the reference value of point 1.
MSET0003
(4080 x G value of point 2 / R2). Set the R,B
Max. value [G – G value of point 2 + (R,B
max
value of point 2)
G2
slope, slope,
between MAX and Point2.
R2 (R - R )/(4080-3664)
slope = max high
R G B
high, high, high.
R R2 (3840-3664)
high = slope X
Set the reference value R,G,B of point 2
(R2 )=R2+ R
high
Calculate the slope R1 G1
slope,
between Point2 and Point1.
R1 (R - R )/(3664-480)
slope = high low
Calculate the correction value R
G B
low, low.
R R1 (538-480)
low = slope X
Set the reference value R,G,B of point 1
(R1 )=R1+ R
low
Initial value at RGB 2 point : 3664
Initial value at RGB 1 point : 480
Spec
Level Adj. Spec.
Data
+
x=0.2685
-
229 0.0010
y=0.267
+
x=0.2685
-
30 0.0045
y=0.267
AV MODE : [DYNAMIC] (Reset)
Aging Time : Minimum
B2
slope
B1
slope, slope
low,
Inspection
Spec.
+
-
0.0020
+
-
0.0090
30 minutes
5 – 6
RESULT