Sony SDM-N80 Service Manual page 23

1. Adjustment of 9300K
(1) Receive MODE 29 (1280x1024 60Hz) 80IRE with the input 1. Set SOURCEID1=00h.
(2) Set R_USER_DRV=235.
Set R_USER_BKG=132.
(3) Make adjustment with G/B_USER_DRV to set the chromaticity within the specification.
x adjustment ..... Make adjustment with B_USER_DRV.
(The value y also changes.)
B_USER_DRV UP
B_USER_DRV DOWN Values x and y increase.
y adjustment ..... Make adjustment with G_USER_DRV.
G_USER_DRV UP
G_USER_DRV DOWN Value y decreases.
Spec: 9300K (x, y) = (0.285, 0.298)
Within 3JND at 80IRE
9300K (x, y) = (0.277, 0.287)
Within 4JND at 20IRE
Note: Make adjustment up to 0.002.
(4) Make the signal 20IRE all white to check that it is within the specification.
(5) Input a gray scale to check the picture quality.
(5) (4) If out of specification, adjust the B/G_USER_BKG so as to satisfy the specification.
(6) Input a gray scale to check the picture quality.
2. Adjustment of 6500K
(1) Receive MODE 29 (1280x1024 60Hz) 80IRE with the input 1. Set SOURCEID1=01h.
(2) Set R_USER_DRV=235.
Set R_USER_BKG=132.
(3) Make adjustment with G/B_USER_DRV to set the chromaticity within the specification.
x adjustment ..... Make adjustment with B_USER_DRV.
(The value y also changes.)
B_USER_DRV UP
B_USER_DRV DOWN Values x and y increase.
y adjustment ..... Make adjustment with G_USER_DRV.
G_USER_DRV UP
G_USER_DRV DOWN Value y decreases.
Spec: 6500K (x, y) = (0.314, 0.328)
Within 3JND at 80IRE
6500K (x, y) = (0.298, 0.317)
Within 4JND at 20IRE
Note: Make adjustment up to 0.002.
(4) Make the signal 20IRE all white to check that it is within the specification.
(5) Input a gray scale to check the picture quality.
(5) (4) If out of specification, adjust the G/B_USER_BKG so as to satisfy the specification.
Values x and y decrease.
Value y increases.
Values x and y decrease.
Value y increases.
(6) Input a gray scale to check the picture quality.
3. Adjustment of 5000K
(1) Receive MODE 29 (1280x1024 60Hz) 80IRE with the input 1. Set SOURCEID1=02h.
(2) Set R_USER_DRV=235.
Set R_USER_BKG=135.
(3) Make adjustment with G/B_USER_DRV to set the chromaticity within the specification.
x adjustment ..... Make adjustment with B_USER_DRV.
(The value y also changes.)
B_USER_DRV UP
B_USER_DRV DOWN Values x and y increase.
y adjustment ..... Make adjustment with G_USER_DRV.
G_USER_DRV UP
G_USER_DRV DOWN Value y decreases.
Spec: 5000K (x, y) = (0.345, 0.358)
Within 3JND at 80IRE
5000K (x, y) = (0.316, 0.335)
Within 4JND at 20IRE
Note: Make adjustment up to 0.002.
(4) Make the signal 20IRE all white to check that it is within the specification.
(5) Input a gray scale to check the picture quality.
(5) (4) If out of specification, adjust the G/B_USER_BKG so as to satisfy the specification.
(6) Input a gray scale to check the picture quality.
4. Data copy to USER
Set SOURCEID1=03h and copy the data of R/G/B USER DRV and R/G/B USER BKG of
SOURCEID1=01h (Adjustment of 6500K).
5. Data copy to analog 2 input
(1) 9300K data copy
Set SOURCEID1=20h and copy the data of R/G/B USER DRV and R/G/B USER BKG of
SOURCEID1=00h (Adjustment of 9300K).
(2) 6500K data copy
Set SOURCEID1=21h and copy the data of R/G/B USER DRV and R/G/B USER BKG of
SOURCEID1=01h (Adjustment of 6500K).
(3) 5000K data copy
Set SOURCEID1=22h and copy the data of R/G/B USER DRV and R/G/B USER BKG of
SOURCEID1=02h (Adjustment of 5000K).
(4) USER data copy
Set SOURCEID1=23h and copy the data of R/G/B USER DRV and R/G/B USER BKG of
SOURCEID1=01h (Adjustment of 6500K).
Values x and y decrease.
Value y increases.
SDM-N80 (E) 2-2