Samsung HLS4676SX/XAA Service Manual page 28

Alignment & Adjustment
3-4-3 CCA Adjustment Service Methods
■ CCA : In DLP TV, even the same RGB color may differ depending on the light engine. CCA (Color Coordinate Adjustment)
corrects the color to achieve the color accuracy. CCA performs color correction after measuring and inputting the current
light engine's data on actual color coordinates for displayed Red, Green, Blue, and White color patterns, using a color
coordinate measuring equipment. At this moment, color correction is performed below.
1) This procedure is needed if the Main PCB or DMD Board are changed.
2) If the DMD PCB is changed then you use the Digital→DMD adjustment item in the Option menu of service mode.
3) If the Main PCB is changed use the DMD→Digital adjustment.
＊Attention
Performing CCA is independent on current display's resolution and input signal type if you don't measure color coordinates data.
Measuring color coordinates data requires specific equipment not possessed by service per
sonnel, that makes performing manual adjustment impossible. Adjusting CCA is applied to all the signal mode.
Don't change desired value because it will be harmful to the color of the SET.When the color wheel is changed, Don't performing
CCA adjustment procedure. Adjust Index delay only.
3-12
: CCA Adjustment is needed after changing a light engine or digital board
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