NEC FP1355 Service Manual page 108

No.
4. Line curve (crosshatch pattern outer contour)
x
5. Horizontal trapezoid (top/bottom), vertical trapezoid (left/right)
Bezel
y1
y1
6. Top/bottom pin and barrel, left/right pin and barrel
x
7. Parallelogram distortion
8. Inclination
y1
Bezel
Item
y
x: Curve within 50mm range (horizontal)
y: Curve within 50mm range (vertical)
y=|y1-y2|
•
y2
y2
x=|x1-x2|
Control with the above
•
x1
right value for each the
top, bottom, left and right.
x2
yb
yp
Picture
x1
Measure the larger of x1
and x2.
x2
Measure
y2
Judgement reference value
y = |y1-y2|.
2 - 27
Input signal
x 1.0mm
Crosshatch
y 1.0mm
pattern
y 2.0mm
x 1.8mm
yb 1.3mm
yp 1.5mm
x 1.0mm
x 0.8mm
y 2.0mm