Sharp LC-90Y8T, Service Manual

Page: 31 / 67

LC-90Y8T
5 – 14
MIN Point
GCP00000
GCC0****
Gamma adj. value
data input
GCST0001
Measure luminance
after adjustment
CHGM1255
[ Panel SPEC ]
*R1LK900D3GW10V (B3KUV740X) 5000
䠖
1
12. Write the value of gamma adjustment by inputting command
“GCST0001”.
13. Measure the luminance after all adjustment.
*Initial value of RGB at Point 6 = “928”
*Initial value of RGB at Point 1-5
= revised value of G of each point
[Caution]
To measure the chromaticity and luminance , please wait more
than the following delay time from return marks of “OK”.
Because there is a delay time to output the pattern after
executing a test pattern output command.
㻌
* Picture delay time : 70ms
(the maximum total delay of the main microcomputer
and LCD controller)
[ Target value for adjustment ]
The target value applies correspondingly to the teaching set.
And read the target value from the marking position.
[ Reference value for adjustment ]
Equipment : Luminance meter [Minolta CA-210]
Level
Reference
value
Adjustment
Spec.
Inspection
Spec.
Point 6 928
x=0.272
±0.0010 ±0.0020
y=0.277
Point 5 804
x=0.272
±0.0010 ±0.0020
y=0.277
Point 4 600
x=0.272
±0.0015 ±0.0030
y=0.277
Point 3 448
x=0.272
±0.0020 ±0.0040
y=0.277
Point 2 296
x=0.272
±0.0030 ±0.0060
y=0.277
Point 1 164
x=0.272
±0.0040 ±0.0080
y=0.277
Remarks
For inspection, set the LCD TV as
below.
AV MODE : [DYNAMIC]
Monochrome : ON
Active Backlight : OFF
Aging time : Minimum 60 min.