Sony VPL-VW40 - Manual (Page 50)

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Blanking This feature allows you to adjust the displayable region within
the four directions of the screen.
Select each screen edge “Left / Right / Top / Bottom” on the
Blanking adjustment screen with
M / m buttons. Adjust the desired
Blanking value with < / , button.
When both the “Blanking” and the “V Keystone” are adjusted at the
same time, the “Blanking” cannot be adjusted correctly. When using
the “Blanking”, make sure that you set the “V Keystone” to “0”.
Note