Toshiba 2857DD Service Manual page 15

Setting of amount of V amplitude
correction against variation of screen
brightness.
H pin-cushion distortion correction.
H pin-cushion distortion correction at
four corners.
Setting of amount of H amplitude
correction against variation of screen
brightness.
V linearity correction.
Linearity balance at 1/4, 3/4 areas
from top.
Linearity
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