Service manual

ViewSonic Corporation Confidential - Do Not Copy PJ513D-1

5. YUV Alignment Procedure

Equipment:

- Pattern generator (VG-828)

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 core, YPbPr cable into projector.

2. Change timing and pattern of pattern generator:

Timing: 480i

Pattern: As Figure2

3. Light on projector

4. Adjust user OSD values to default.

5. Enter factory mode.

6. Adjust Factory values to default.

7. Press “Calibration YPbPr” to calibrate the mid level offset.

Figure2