BenQ MP611 Product Service Manual page 101

Procedure:
Gray Level:
1 Connect power, D-sub, into projector.
2 Change Timing and pattern of pattern generator:
3 Timing: 1024*768 @60Hz (XGA)
4 Pattern: As Figure1 {A near white color (240,240,240) and a near black color(16,16,16)}
5 Light on projector
6 Set user OSD values to default.
7 Enter factory mode.
8 Set Factory values to default.
9 Press "Calbration RGB" to let the black level to just distinguish, and the light output of white
level to just max.
10 Check the 32 levels of gray. All steps must appear.
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