Sony KP-XA43M31 Service Manual page 38

GREEN HORIZONTAL SYMMETRICAL PIN
DISTORTION ADJUSTMENT
1. Adjust GH MPIN to correct pin distorton at both edges of
the centre section.
2. Use GH PIN to correct pin distortion at both edges of the
screen.
3. While tracking adjust GH MPIN and GH PIN so that the
PIN of vertical lines on the entire screen have no bowing.
4. If there is asymmetrical distortion after adjustments, re-
adjust GH MBOW and GH SBOW while tracking.
M PIN
GH MBOW
GH PIN
GH MPIN
GREEN VERTICAL WAVE (3RD-ORDER) DISTORTION
ADJUSTMENT
1. Check the screen at the top & bottom, and look for any 2nd
or 3rd order waveform distortion of horizontal lines. Cor-
rect with GV WAVE.
2. While tracking adjust GV WAVE and GV KEY, if here are
any KEY distortion.
GV WAVE
GV KEY
PIN
GH SBOW
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KP-XA43M31/XA43M61/XA43M91
GREEN VERTICAL 4TH ORDER DISTORTION
ADJUSTMENT
1. By using GV 4 PIN, 4th-Order distortion of the horizontal
lines at the top & bottom can be corrected.
Since there is no 4SBO for vertical correction, there will be
a slight imbalnace, but adjust the registration to eleiminate
any distortion.
GV 4PIN
GREEN VERTICAL TRAPEZOIDAL DISTORTION
ADJUSTMENT
1. Adjust GV SSKW so that the tilt of the horizontal lines at
the top and bottom of the screen are symmetrical.
2. Adjust GV MKEY so that there is no tilt for the middle
section.
3. Adjust GV KEY so that there is no tilt at the top and bot-
tom of the screen.
4. While tracking adjust GV MKEY and GV KEY, so that
there is no tilt over the entire screen.
5. If the tilt is unbalanced after GV MKEY and GV KEY
have been adjusted, readjust GV SSKW.
GV SSKW
MKEY
GV SSKW
GV KEY
RM-967
KEY
GV MKEY