Service manual

15” LCD Color Monitor Sharp LL-153A
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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 CA210 MEM. Channel setting
A. Reference to CA210 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 1 (9300K color):
9300K color temp. parameter is x = 383±20, y = 297±15,
B. MEM.CHANNEL 2 (7500K color):
7500K color temp. parameter is x = 299±20, y = 315±15,
C. MEM.CHANNEL 3 (6500K color):
6500K color temp. parameter is x = 313±20, y = 329±15,
D. MEM.CHANNEL 3 (5000K color):
5000K color temp. parameter is x = 364±20, y = 359±15,
E. MEM.CHANNEL 3 (4000K color):
4000K color temp. parameter is x = 282±20, y = 384±15,
3. Into factory mode of SHARP LL-154A
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 64; Adjust the Brightness to 31.
5. Gain adjustment:
Move cursor to “-F-” and press MENU key
A. Adjust 9300K color-temperature
1. Switch the CA210 to 9300 (with press “MODE” button)
2. Switch the MEM. Channel to Channel 3 (with up or down arrow on CA210)
3. The LCD-indicator on CA210 will show x = 283±15, y = 297±15,
4. Adjust the RED of color1 on factory window until CA210 indicator reached the value R=100
5. Adjust the GREEN of color1 on factory window until CA210 indicator reached the value G=100
6. Adjust the BLUE of color1 on factory window until CA210 indicator reached the value B=100
7. Repeat above procedure (item 4,5) until CA210 R/G value meet the tolerance =100±5
8. Repeat above procedure (item 6) until CA210 B value meet the tolerance =126±5
B. Adjust 7500K color-temperature
1. Switch the CA210 to 7500 (with press “MODE” button)
2. Switch the MEM. Channel to Channel 3 (with up or down arrow on CA210)
3. The LCD-indicator on CA210 will show x = 299±15, y = 315±15,
4. Adjust the RED of color1 on factory window until CA210 indicator reached the value R=100