Sony KL-X9200M Service Manual page 40

KL-X9200M/X9200U
RM-902
4) If vertical blanking frame is out of the specification in 3),
loosen the screw at the mounting position A and insert an opti-
cal unit spacer under the optical unit.
[Vertical blanking]
[Specification of blanking frame]
Top, bottom: 6.0 ±3.0 mm
5) After tightening the screw at the mounting position A, the
specification must be satisfied.
[Washer mounting positions]
Optical unit
Mounting position
Mounting position A
Black Level Adjustment
1) Perform aging for more than 25 minutes.
2) Enter Green 100% signal from the RGB1 input terminal.
3) [VIDEO ADJ] "00" USER CONTRAST = 100
[VIDEO ADJ] "01" USER BRIGHT = 100
[VIDEO ADJ] "07" USER COL TEMP = 0
4) Using the chrominance meter (CS100), measure the bright-
ness
(L MAX.) at the center of screen.
5) Set [VIDEO ADJ] "01" USER BRIGHT = 50.
6) Enter Green 25% signal.
7 With [CXA2055-1] SBRT, adjust so that the brightness (L
CUT) at the center of screen approximates most to the follow-
ing:
(L CUT) = 0.028((L MAX)
White Level Adjustment
1) With the black level already adjusted, enter Green 90% signal.
2) With [CXA2055-2] "00" DRVL, adjust so that the brightness
(L WHT) at the center of screen approximates most to (L
WHT) = 0.87(L MAX).
Data Saving
1) Save SBRT data in both RGB VIDEO and COMPONENT
memories.
Picture
2) Save DRVL data in both RGB VIDEO and COMPONENT
memories.
RGB White Balance Adjustment
•
RGB "High" 9300K
1) Set the following conditions.
[VIDEO ADJ] "00" USER CONTRAST = 100
[VIDEO ADJ] "01" USER BRIGHT = 50
[VIDEO ADJ] "07" USER COL TEMP = 0
[µPD6221-94] RLB1, GLB1, BLB1 = 128
[µPD6221-94] RLB2, GLB2, BLB2 = 128
2) Enter 40% flat field signal to the RGB1 input terminal, and
with the service data [CXA2055-1] "01" RCUT and "03"
BCUT, adjust so as to attain the best position.
In such a case, start adjustment from RCUT=100 and
BCUT=100.
(GCUT is fixed to 128)
3) Enter 70% flat field signal to the RGB1 input terminal, and
Mounting
with the service data [CXA2055-2] "02" RDRV and "03"
position
BDRV, adjust so as to attain the best position.
In such a case, start adjustment from RDRV=100 and
BDRV=100.
4) Repeating steps 2) and 3), adjust tracking so that both 40% and
70% signals satisfy respective specifications.
5) Enter 30% flat field signal to the RGB1 input terminal, and
with the service data [µPD6221-94] "00" RLB1 and "02"
BLB1, adjust so as to approximate most to the adjustment cen-
ter position.
In such a case, for "01" GLB1, read and set board adjustment
Spacer
data, and start adjustment from RLB1=100 and BLB1=100.
6) Enter 10% flat field signal to the RGB1 input terminal, and
with the service data [µPD6221-94] "03" RLB2 and "05"
BLB2, adjust so as to approximate most to the adjustment cen-
ter position.
In such a case, for "04" GLB2, read and set board adjustment
data, and start adjustment from RLB2=100 and BLB2=100.
7) Adjustment data
Save RCUT, BCUT, RDRV, BDRV, RLB1, BLB1, RLB2,
BLB2 data in each area of RGB, VIDEO, and COMPONENT.
Save the same data in each area of NTSC, HD, DVD, and AV
MULTI.
8) Enter the 10 STEP signal to the RGB input terminal, and con-
firm on the screen that the color in each step of 0~100 IRE is
homogeneous and no local different color is found.
– 40 –