Sony SDM-N50PS Service Manual page 20

SDM-N50PS
3. Adjustment of 5000°K
(1) Confirm every R/G/B_USER_BKG are initialized value.
(2) Receive MODE 15 (1024X768 60Hz) 80IRE.
Set COLOR to 5000°K. (COLOR_INDEX=3)
(3) Make adjustment with R/G_USR_DRV to set the chromaticity
within the specification.
y adjustment ..... Make adjustment with B_USR_DRV.
(Also x value changes simultaneous)
B_USR_DRV UP
B_USR_DRV DOWN
x adjustment ..... Make adjustment with R_USR_DRV.
R_USR_DRV UP
R_USR_DRV DOWN
Adjust again and bring down G_USR_DRV 10 STEP to
become within the specification ; however, in case of
adjustment range of y value become deficientlly and when
B_USR_DRV=255.
(4) Make the signal 30IRE all white to check that it is within the
specification.
(5) Adjust R/B_USER_BKG to become within the specification
when (4) deviates the specification.
(6) Input a grayscale and perform picture quality confirmation.
(7) Perform color save ( select C with ALT+M ).
Spec: 5000°K 80IRE (x, y) = (0.345, 0.352)
5000°K 30IRE (x, y) = (0.322, 0.332)
Note: Make adjustment up to ±0.002.position.
Values x and y decrease.
Values x and y increase.
Value y increases.
Value y decreases.
Within 3JND
Within 4JND
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