BenQ PB8220 Service Manual page 77

3. If we line the x and y, then the Pb offset is the shift action and the Pr offset is the
rotational action.
4. Connect power, YPbPr Video into projector.
5. Change Timing and pattern of pattern generator:
Timing: 480P (H: 31.54 KHz, V: 60.08 Hz)
Pattern: Black
6. Light on projector
7. Set user OSD values to default.
8. Enter factory mode.
9. Set Factory values to default.
10. Follow the PbPr offset adjustment flow chart:
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