Geometric Distortion - DEC VR297 User Manual

1.2.5 Geometric Distortion

START
DISPLAY THE CIRCLE CROSSHATCH SCREEN
MEASURE THE DISTANCE BETWEEN THE
TOP AND BOTTOM OF THE IMAGE AT
SEVERAL POINTS ACROSS THE SCREEN
IS THE
DISTANCE FROM
TOP TO BOTTOM AT
EACH POINT
236 mm
YES
MEASURE THE DISTANCE FROM THE
LEFT SIDE OF THE IMAGE TO THE
RIGHT SIDE AT SEVERAL POINTS
ACROSS THE SCREEN
IS THE
DISTANCE FROM
SIDE TO SIDE AT
EACH POINT
280mm
YES
STOP
SECTION NUMBERS ARE IN PARENTHESES.
NO
PERFORM THE D BOARD
ADJUSTMENTS (2.4)
ARE THE
TOP TO BOTTOM
AND SIDE TO SIDE
DISTANCES EQUAL AT
236 mm AND 280 mm,
RESPECTIVELY
NO
NO
REPLACE THE D BOARD (3.6)
PERFORM THE D BOARD
ADJUSTMENTS (2.4)
ARE THE
TOP TO BOTTOM
AND SIDE TO SIDE
DISTANCES EQUAL AT
236 mm AND 280 mm,
RESPECTIVELY
NO
REPLACE THE WHOLE MONITOR
11
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YES
STOP
YES
STOP