XV-Z21000 (serv.man4). Electrical Adjustments - Sharp Projector Service Manual (repair manual). Page 3

XV-Z20000/XV-Z21000/DT-5000

4 – 3

Do not change the process adjustment values other than the above since they are set so that optimal images are obtained.

6-4

Component RGB-gain adjust-
ment
(Auto adjustment)

1. Adjustment device: AD998417
2. Adjustment group: AD (COMP) (Process
    gamma linkage)
3. Adjustment item: G-D
    Initial value: 70
4. Input terminal: DVI A-Component
    (Input switching linkage)
5. Component wind pattern having 100%  
   (0.7 Vpp) G signal and 0%
6. Perform adjustment after adjusting CR-
   OFFSET, CB-OFFSET and G-BRIGHT.

1. Observe the 100% portion.
2. Vary G-GAIN (decrement direction), and the illumi-
   nance and chromaticity start to change.
3. Adjust to the point raised by 2 points from the point
    where bit dropout appears on the screen.

7

White balance adjustment

1. Adjustment device: DDP3021
2. Adjustment group: DLP
3. Adjustment item: R-GAIN
    Initial value: 95
    B-GAIN
    Initial value: 95
4. Input terminal: DVI A-Component
    (Input switching linkage)
5. Input signal: Component 75% gray signal

1. Observe the chromaticity of 75% portion using
    CL200.
2. Adjust the y value to adjustment chromaticity 

±

    0.005 with B-GAIN.
3. Adjust the x value to adjustment chromaticity 

±

    0.005 with R-GAIN.
    Adjustment chromaticity
    x = 0.299 

±0.005

    y = 0.316 

±0.005

8

Factory setting

1. Group: SSS

1. Perform the following settings.
    Destination   Process adjustment   Remote control 
    setting
    Europe: S3   Factory setting 3
    North America: S4   Factory setting 4
    Japan: S5   Factory setting 5
    China: S6   Factory setting 6
    South America: S7   Factory setting 7