Acer X1230S series Service Manual page 73

4. YUV Alignment Procedure
OSD Default value:
Item
Cal R Offset
Cal G Offset
Cal B Offset
Cal R Gain
Cal G Gain
Cal B Gain
YPbPr R Offset
YPbPr B Offset
Procedure:
1. Connect power, YpbPr cable (only G cable from DVD player) into projector.
2. Change Timing and play below Color-bar pattern from DVD player.
Timing: 480i
Pattern: Color-bar pattern
(since only G cable is connected, the projected image shows the color bar as black
and white)
3. Light on projector
4. Enter factory mode.
5. Press "Calibration YpbPr" to calibrate the mid level offset.
6. It's completed.
Value
127
127
127
127
127
127
127
127
Color-bar pattern
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