7.5. LCD GAMMA Adjustment
Instrument Name
Connect to
Remarks
1.
Remote controller
2.
LCD WB meter (Minolta CS-1000 equivalent)
3.
Communication jig
4.
Computer for external control
·
After 30 minutes aging complete white balance adjustment.
1. Enter into WB adjustment in the plant adjustment mode and measure the WHITE brightness data to check that it is higher than
300 cd /m
2
.
(Viewing mode: standard, LCD AI: OFF, Back Light: +30 )
(When it is below 300 cd /m
2
, make re-measurement in 30 minutes after cold-on.)
2. Measure white brightness data and chromaticity coordinate, decide "Standard color 1" and "Standard color 2" at adjustment
peak.
3. Set up objective of coordinate, select two color R-GAIN or G-GAIN or B-GAIN but no use standard color (=0xff), display white
color. When adjustment is not required normal, select two color R-GAIN or G-GAIN or B-GAIN but no use standard color (=0xff).
<< objective of coordinate (x0, y0) = (0.277 ± 0.002, 0.279 ± 0.002) >>
Standard color 1/2
RED
GREEN
BLUE
x direction
B-GAIN [1]
R-GAIN [2]
R-GAIN [1]
y direction
G-GAIN [2]
B-GAIN [1]
G-GAIN [2]
·
When turn up R-GAIN and G-GAIN chromaticity coordinate get bigger, When turn up B-GAIN chromaticity coordinate get
smaller.
·
When adjust for remote control select R-GAIN, G-GAIN and B-GAIN by pressing "3" and "4",and change for "" and
"volume -".
·
Adjust preferentially [1] ,converge simply.
4. Set up objective of coordinate, select R-CENT and B-CENT, set standard color green (=0x80), display gray color.
Standard color
GREEN
Adjustment direction
x direction
R-GAIN
When turn up chromaticity coordinate get bigger.
y direction
B-GAIN
When turn up chromaticity coordinate get smaller.
·
When adjust for remote control select R-GAIN, G-GAIN and B-GAIN by pressing "3" and "4", and change for "" and
"volume -".
5. Write the values converge objective of coordinate above in the gamma data part in EEPROM.
·
When adjust for remote control, push for one second "8" on the remote controller with R-GAIN, G-GAIN and B-GAIN. (OSD
is flash red on upper left of display.)
6. Check that the chromaticity coordinate, at white and gray, are within the values given below.
x= 0.277 ± 0.003
y= 0.279 ± 0.003
11
TC-20LA2 / TC-20LA2D
Summary of Contents for TC-20LA2
Page 14: ...Page 1 of 1 4 24 2008 http tsn pstc panasonic com viewing NA TC 20LA2 SVC ex_parts gif ...
Page 30: ...9 Block and Schematic Diagrams 9 1 Schematic Diagram Notes 17 ...
Page 31: ...17 ...
Page 38: ...9 5 A Board 2 of 5 Schematic Diagram TC 20LA2 2D A Board 2 of 5 Schematic Diagram 21 ...
Page 39: ...TC 20LA2 2D A Board 2 of 5 Schematic Diagram 21 ...
Page 44: ...9 8 A Board 5 of 5 Schematic Diagram NP TC 20LA2 2D A Board 5 of 5 Schematic Diagram 24 ...
Page 45: ... TC 20LA2 2D A Board 5 of 5 Schematic Diagram 24 ...
