Sony KP-48V75 / KP-53V75 / KP-61V75 Service Manual ▷ View online
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KP-48V75/53V75/61V75
RM-Y903
RM-Y903
RM-Y903
3-10. CONVERGENCE ADJUSTMENT
•
When replacing the deflection yoke, always perform
“DEFLECTION YOKE TILT ADJUSTMENT” before adjusting
the convergence.
the convergence.
Adjustment procedure
VSP MAIN
R GH (SUB), R GV (SUB)
R RH (SUB), R RV (SUB)
R BH (SUB), R BV (SUB)
[ GREEN REGISTRATION ADJUSTMENT ]
• V-SHIFT adjustment
VP VPOS
• V-LINEARITY adjustment
VP VLIN
• V-SIZE, V-CORRECTION adjustment
While tracking, adjust so that the lattice intervals for VSIZ and
VSCO are equal.
VSCO are equal.
VP VSIZ
VP VSCO
• H-SHIFT adjustment
VP HPOS
• H-SIZE adjustment
Finely adjust with SUB MSIZ.
VP HSIZ
• PIN-AMP adjustment
Finely adjust with SUB MPIN.
VP PAMP
• UPPER/LOWER-CORNER PIN adjustment
Correct the screens top and bottom bow line.
However, if this adjustment is overdone, distortion may occur
with the PIN-AMP adjustment that can not be re-adjusted.
However, if this adjustment is overdone, distortion may occur
with the PIN-AMP adjustment that can not be re-adjusted.
Note :
The PIN-AMP adjusts the overall screen from top to
bottom, but the UPPER/LOWER-CORNER PIN
adjustments have large movement in the top and
bottom sections, so be careful.
bottom, but the UPPER/LOWER-CORNER PIN
adjustments have large movement in the top and
bottom sections, so be careful.
VP UPIN
VP LPIN
• V-ANGLE, V-BOW adjustment
Correct the tilt and bow of the vertical line at the center of the
screen.
screen.
VP VANG
VP VBOW
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KP-48V75/53V75/61V75
RM-Y903
RM-Y903
RM-Y903
[GREEN SUB ADJUSTMENT]
SCREEN CENTER SECTION GREEN VERTICAL LINE
ADJUSTMENT
SCREEN CENTER SECTION GREEN VERTICAL LINE
ADJUSTMENT
1. Finely adjust with GH CENT, GH BOW, GH SKEW.
Adjust by watching out for the GH CENT screen center sec-
tion.
tion.
2. RGH 4TH BOW adjustment
Correct the corner distortion that could not be adjusted away
with the GH 4BOW adjustment.
with the GH 4BOW adjustment.
Watch out only for the
GH CENT center point.
GH CENT center point.
Watch the vertical center line.
GH CENT
GH BOW
GH SKEW
GH 4BOW
SCREEN CENTER SECTION GREEN HORIZONTAL LINE
ADJUSTMENT
ADJUSTMENT
1. Finely adjust the center position of the vertical line at the
center of the screen with GV CENT.
2. Correct the tilt and bow of the horizontal line at the center of
the screen with GV SKEW and GV BOW.
Watch the horizontal
center line.
center line.
Watch out only for the
GV CENT center point.
GV CENT center point.
Watch out only for the GV
CENT center point.
CENT center point.
GV CENT
GV SKEW
GV BOW
GREEN SIZE AND LINEARITY ADJUSTMENT
1. Balance the sizes at both sides of the center section of the
screen with RGH MLIN.
2. Balance the sizes on both end sections of the screen with
RGH LIN.
3. While tracking, adjust with RGH MLIN and RGH LIN so
that the sizes of the horizontal line at the center of the screen
are symmetrical left and right.
are symmetrical left and right.
MLIN
LIN
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KP-48V75/53V75/61V75
RM-Y903
RM-Y903
RM-Y903
GREEN HORIZONTAL SIZE ADJUSTMENT
1. Adjust with RGH MSIZE so that the sizes of both ends and
of both sides of the center section of the screen are equal.
2. Adjust with GH SIZE so that the horizontal sizes of both
ends and of both sides of the center section of the screen are
equal.
equal.
3. While tracking, adjust with GH MSIZ and GH SIZE so that
the lattice intervals for the horizontal line section of the cen-
ter section of the screen are equal and so that the horizontal
size is the prescribed value.
ter section of the screen are equal and so that the horizontal
size is the prescribed value.
4. If M LIN is changed when the GH MSIZ and GH SIZE ad-
justment is complete, adjust again while tracking.
•
With just the H SIZE adjustment in MAIN, if there is no need
to adjust RGH SIZE in SUB this can save power.
GREEN VERTICAL SIZE ADJUSTMENT
1. Adjust with GV MSIZE so that the sizes for the top and bot-
tom sections of the screen and for both sides of the center
section of the screen are equal.
section of the screen are equal.
2. Set the vertical size to the prescribed value with GV SIZE.
3. Adjust GV MSIZ and GV SIZE watching the vertical line at
3. Adjust GV MSIZ and GV SIZE watching the vertical line at
the center section of the screen.
4. While tracking, adjust with GV MSIZ and GV SIZE so that
the lattice intervals for the vertical line section of the center
section of the screen are equal and so that the vertical size is
the regulation value.
section of the screen are equal and so that the vertical size is
the regulation value.
5. If GV LIN is out of place when the GV MSIZ and GV SIZE
adjustment is complete, adjust again while tracking.
•
If there is no need to adjust GV SIZE in SUB with just the V
SIZE adjustment in MAIN, this can save power.
SIZE adjustment in MAIN, this can save power.
MSIZ
SIZE
GH MLIN
GH MSIZ
GH LIN
GH SIZE
GREEN VERTICAL LINEARITY ADJUSTMENT
1. Adjust GV LIN so that the vertical lines at the top and bot-
tom of the screen are symmetrical.
MSIZ
SIZE
GV LIN
GV SIZE
GV MSIZ
GREEN HORIZONTAL TRAPEZOIDAL DISTORTION
ADJUSTMENT
ADJUSTMENT
1. Adjust with GH SSKW so that the tilt of the vertical lines at
both ends of the screen is symmetrical left and right.
2. Adjust with GH KEY so that there is no tilt in the vertical
lines at both ends of the screen.
3. If there is a tilt on either the left or right after the GH KEY
adjustment, adjust while tracking.
SS KW
KEY
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KP-48V75/53V75/61V75
RM-Y903
RM-Y903
RM-Y903
GREEN HORIZONTAL QUATERNARY ADJUSTMENT
1. Correct the quaternary distortion with GH 4PIN.
2. While balancing, correct the quaternary distortion of both
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
4SBO
4SBOW
GREEN HORIZONTAL ASYMMETRICAL PIN
DISTORTION ADJUSTMENT
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.
metrical left and right.
M BOW
S BOW
GREEN HORIZONTAL SYMMETRICAL PIN DISTORTION
ADJUSTMENT
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.
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
PIN
GH MBOW
GH PIN
GH SBOW
GH MPIN
GREEN VERTICAL WAVE (TERTIARY DISTORTION)
ADJUSTMENT
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.
GH MBOW
GH MPIN
GV WAVE
GV KEY
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