Sony KP-53S65 Service Manual page 43

GREEN HORIZONTAL QUATERNARY ADJUSTMENT
1. Correct the quaternary distortion with GH 4PIN.
2. While balancing, correct the quaternary distortion of both
end sections of the screen with GH 4SBOW.
3. While tracking, adjust with GH 4PIN and RGH 4SBOW.
4 PIN
GREEN HORIZONTAL ASYMMETRICAL PIN
DISTORTION ADJUSTMENT
1. Adjust with GH MBOW so that the pin asymmetry at both
sides of the center section of screen is symmetrical.
2. Adjust with GH SBOW so that the bow at both end sections
of the screen is symmetrical left and right.
3. While tracking, adjust with GH MBOW and GH SBOW so
that the bow of vertical lines on the entire screen is sym-
metrical left and right.
M BOW
4SBOW
4SBO
S BOW
– 42 –
GREEN HORIZONTAL SYMMETRICAL PIN DISTORTION
ADJUSTMENT
1. Adjust the pin distortion at both sides of the center section of
the screen with GH MPIN.
2. Adjust the pin distortion at both end sections of the screen
with GH PIN.
3. While tracking, adjust with GH MPIN and GH PIN so that
the PIN of vertical lines on the entire screen have no bowing.
4. If there is asymmetrical pin distortion after the GH MPIN
and GH PIN adjustments, adjust with GH MBOW and GH
SBOW while tracking.
•
With just the PIN AMP adjustment in MAIN, if there is no
need to adjust GV PIN in SUB, this can save power.
M PIN
GH MBOW
GH PIN
GH MPIN
GREEN VERTICAL WAVE (TERTIARY DISTORTION)
ADJUSTMENT
1. Take the screen top and bottom horizontal lines with GV
WAVE and find the secondary and quaternary waveform.
2. There is KEY distortion after the GV WAVE adjustment, so
adjust withRGV WAVE and RGV KEY while tracking.
GV WAVE
GV KEY
PIN
GH SBOW
GH MBOW
GH MPIN