Sharp LC-70UD1U, Service Manual

Page: 32 / 84

LC-70UD1U
5 – 13
9. White balance adjustment
9.1. White balance adjustment (For details about the adjustment procedure, refer to “Kameyama Model Integrated Monitor
WB Adjustment Specification V1.92”.)
Adjustment
point
Adjustment conditions Adjustment procedure
1 Setting 1) Set the unit to the following conditions.
AV MODE: [DYNAMIC]
Backlight: +16
Active Backlight: OFF
Aging Time: Min. 60 minutes
2) Connect the unit with the white balance adjustment jig.
2 Automatic
adjustment exe-
cution
[DYNAMIC]
Adjustment [Command]
Process mode
KRSW0001
KKT10037
Setting
KY0F0000
0SDS0001
SBSL0016
Multi-point adjustment mode
MSET0001
Point 7
LEV70121
MG7G****
MG7B****
MG7R****
Point 6
LEV60098
MG6G****
MG6B****
MG6R****
Point 5
LEV50073
MG5G****
MG5B****
MG5R****
Point 4
LEV40046
MG4G****
MG4B****
[Adjustment procedure]
1) Send the “adjustment process” code using the remote control.
[DYAMIC]Adjustment
2) Specify the strongest color as the fixed color, and adjust the RGB by the MG7*****
command so that it becomes the standard value through negative adjustment.
3) Set the point 6 to the specified gradation, set the G correction value (3136 x G value
of point 7/3872) (fractions rounded off) and adjust the RB so that it becomes the stan-
dard value.
4) Set the point 5 to the specified gradation, set the G correction value (2336 x G value
of point 7/3872) (fractions rounded off) and adjust the RB so that it becomes the stan-
dard value.
5) Set the point 4 to the specified gradation, set the G correction value (1472 x G value
of point 7/3872) (fractions rounded off) and adjust the RB so that it becomes the stan-
dard value.
6) Set the point 3 to the specified gradation, set the G correction value (1152 x G value
of point 7/3872) (fractions rounded off) and adjust the RB so that it becomes the stan-
dard value.
7) Set the point 2 to the specified gradation, set the G correction value (704 x G value of
point 7/3872) (fractions rounded off) and adjust the RB so that it becomes the stan-
dard value.
8) Set the point 1 to the specified gradation, set the G correction value (384 x G value of
point 7/3872) (fractions rounded off) and adjust the RB so that it becomes the stan-
dard value.
9) Write the adjustment value by the MSET0030 command and turn off the AC power.
* RGB initial value of point 7: Set gradation 3872
* RGB initial value of points 1 to 6: G correction value of each point
[Adjustment value]
* According to the “Standard settings” submitted by the Technical Department
[LC70UD1U] teaching set
[Adjustment standard value]
Measuring instrument: [SR-UL2] Technical measuring instrument
MG4R**** Level Reference value Adjustment spec Inspection spec
Point 7 3872
x=0.274
±
0.0010
±
0.0020
Point 3 y=0.274
LEV30036
Point 6 3136
X=0.274
±
0.0010
±
0.0020
MG3G**** y=0.274
MG3B****
Point 5 2336
X=0.274
±
0.0015
±
0.0030
MG3R**** y=0.274
Point 4 1472
X=0.274
±
0.0020
±
0.0040
Point 2 y=0.274
LEV20022
Point 3 1152
X=0.274
±
0.0030
±
0.0060
MG2G**** y=0.274
MG2B****
Point 2 704
X=0.274
±
0.0040
±
0.0080
MG2R**** y=0.274
Point 1 384
X=0.274
±
0.0060
±
0.0120
Point 1 y=0.274
LEV10012
MG1G****
MG1B****
MG1R****
Writing
Remarks Setting conditions for inspection
AV MODE: [DYNAMIC]
Monochro: ON
Active Backlight: OFF
Aging Time: Min. 60 minutes
MSET0003 Brightness specification after adjustment.
LC-70UD1U:Min 240cd/m2