HP 715g1823-1-cn-hp, Service Manual

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17" LCD Color Monitor HP L1706
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10. 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. 9300 color: 9300 color temp. parameter is x = 283 ±20, y = 297 ±20, Y > 180 cd/m2 ,
B. sRGB color: sRGB color temp. parameter is x = 313±20, y = 329 ±20, Y>200 cd/m2)
C. 6500K color: Don’t adjust, Custom requires.
3. Into factory mode of HP L1706
A. Press DOWN button during 2 seconds along with press Power button will activate the factory mode, then
MCU will do AUTO LEVEL automatically. Meanwhile press MENU the OSD screen will located at THE
LEFT TOP OF PANEL.
4. Bias adjustment:
Set the Contrast to 80
Adjust the Brightness to 90.
5. Gain adjustment :
Move cursor to “-F-” and press MENU key
A. Adjust 9300k color-temperature
1. Switch the Chroma-7120 to 9300k channel.
2. The chroma 7120 will show x = 283
±
20, y = 297
±
20, Y>180 cd/m2
3. Switch the chroma-720 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 sRGB color-temperature
1. Switch the chroma-7120 to sRGB channel.
2. The chroma 7120 will show x = 313 ± 20, y = 329 ± 20, Y = 210 ± 20 cd/m2
3. Switch the chroma 7120 l to RGB MODE ( with press “MODE” button to change )
4. Adjust the RED of color sRGB on factory window until chroma 7120 indicator reached the value R=100
5. Adjust the GREEN of color sRGB on factory window until chroma 7120 indicator reached the value G=100
6. Adjust the BLUE of color sRGB 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. Press reset key and Turn the Power-button “off to on” to quit from factory mode.