Acer X1230S Acer X1130, X1230, X1230K, X1230S, and X1235 Projector Series Serv - Page 73

4. YUV Alignment Procedure OSD Default value: Item Value Cal R Offset 127 Cal G Offset 127 Cal B Offset 127 Cal R Gain 127 Cal G Gain 127 Cal B Gain 127 YPbPr R Offset 127 YPbPr B Offset 127 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. Color-bar pattern 73