2.19 Raster distortion check
Checking condition
(1) Digital convergence adjustment should have been completed.
(2) Receive the cross-hatch signal (internal signal of the the set is acceptable).
(3) Brightness/Contrast --- standard condition
Contrast : max
Other controls : center position
(4) Check the raster distortion specification: Value shown in the table below or less.
A~ D
I ~ L
---Measure the winding of the outside line.
Item Symbol 53Ó 61Ó
Top/Bottom pincushion distortion A,B ±6 ±6
Right/Left pincushion distortion C,D ±4 ±5
Center line Vertical line 5 6 6
tilt Horizontal line 5 6 6
Center line Vertical line ±3 ±3 ±4
winding Horizontal line ±3 ±3 ±4
Trapezoidal distortion Vertical line 4 5 5
Skew distortion Horizontal line 5 6 6
(unit: mm)