FSC P20W-5, Service Manual

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20
"
&22
"
LCD Color Monitor FSC P20W-5&P22W-5
- 41 -
9. White-Balance, Luminance Adjustment
Approximately 30 minutes should be allowed for warm up before proceeding White-Balance adjustment.
1. How to do the Chroma-7120 MEM. Channel setting
A. Reference to chroma 7120 user guide
B. Use “SC” key and “NEXT” key to modify x, y, Y value and use “ID” key to modify the TEXT description Following
is the procedure to do white-balance adjust
2. Setting the color temp. you want
A. MEM.CHANNEL 3 (9300 color):
9300 color temp. parameter is x = 283±15, y = 297 ±15.
B. MEM.CHANNEL 4 (7500 color):
7500 color temp. parameter is x = 300±15, y = 315 ±15.
C. MEM.CHANNEL 9 (6500 color):
6500 color temp. parameter is x = 315±15, y = 325 ±15
D. MEM.CHANNEL 10 (sRGB color):
sRGB color temp. parameter is x = 315±15, y = 325 ±15
3. Into factory mode of P20W-5/P22W-5
For factory menu, press ▼ and EXIT/AUTO-keys for 4 seconds to activate access to factory menu.
4. Bias adjustment:
Set the Contrast to 50; adjust the Brightness to100.
5. Gain adjustment:
A. Adjust 9300 color-temperature
1. Switch the Chroma-7120 to RGB-Mode (with press “MODE” button)
2. Switch the MEM. Channel to Channel 3 (with up or down arrow on chroma 7120)
3. The LCD-indicator on chroma 7120 will show x = 283±15, y = 297 ±15, Y > 200 cd/m
2
4. Adjust the RED of color1 on factory window until chroma 7120 indicator reached the value R=100
5. Adjust the GREEN of color1 on factory window until chroma 7120 indicator reached the value G=100
6. Adjust the BLUE of color1 on factory window until chroma 7120 indicator reached the value B=100
7. Repeat above procedure (item 4,5,6) until chroma 7120 RGB value meet the tolerance =100±2
B. Adjust 7500 color-temperature
1. Switch the chroma-7120 to RGB-Mode (with press “MODE” button)
2. Switch the MEM. Channel to Channel 4(with up or down arrow on chroma 7120)
3. The LCD-indicator on chroma 7120 will show x = 300±15, y = 315 ±15, Y > 230 cd/m
2
4. Adjust the RED of color3 on factory window until chroma 7120 indicator reached the value R=100
5. Adjust the GREEN of color3 on factory window until chroma 7120 indicator reached the value G=100
6. Adjust the BLUE of color3 on factory window until chroma 7120 indicator reached the value B=100
7. Repeat above procedure (item 4,5,6) until chroma 7120 RGB value meet the tolerance =100±2