Iiyama PLB2409HDS, Service Manual

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23.6"W LCD Color Monitor Iiyama PLB2409HDS
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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 xyY 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. cool color:
9300K color temp. parameter is x = 283 ±30, y = 297 ±30, Y > 200 cd/m
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B. normal color:
7300K color temp. parameter is x = 303 ±30, y = 319 ±30, Y > 200 cd/m
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C. warm color:
6500K color temp. parameter is x = 313 ±30, y = 329 ±30, Y > 200 cd/m
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D. SRGB:
SRGB color temp. parameter is x = 313 ±30, y = 329 ±30, Y > 160 cd/m
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3. Enter into factory mode:
Turn on power, press the Menu button, pull out the power cord, and then plug the power cord. Then the factory
OSD will be at the left top of the panel.
4. Bias adjustment:
Set the Contrast to 90; Adjust the Brightness to 100.
5. Gain adjustment:
Move cursor to “-F-” and press MENU key
A. Adjust 9300k color-temperature
1. Switch the Chroma-7120 to channel 3.
2. The chroma 7120 will show x = 283 ±30, y = 297 ±30, Y > 200 cd/m
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3. Switch the chroma-7120 to RGB MODE (with press “MODE” button to change)
4. Adjust the RED of color 9300K on factory window until chroma 7120 indicator reached the value R=100
5. Adjust the GREEN of color 9300K on factory window until chroma 7120 indicator reached the value G=100
6. Adjust the BLUE of color 9300K 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 7300K color-temperature
1. Switch the chroma-7120 to channel 4.
2. The chroma 7120 will show x = 303 ±30, y = 319 ±30, Y > 200 cd/m
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3. Switch the chroma 7120 to RGB MODE (with press “MODE” button to change)
4. Adjust the RED of color 7300K on factory window until chroma 7120 indicator reached the value R=100
5. Adjust the GREEN of color 7300K on factory window until chroma 7120 indicator reached the value G=100
6. Adjust the BLUE of color 7300K 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
C. Adjust 6500K color-temperature