Convergence; 2-2.1. Vertical And Horizontal Static Convergence; V-Pin And V-Cen Adjustment; 2-3.1. Operation Of Bmc (Hexapole) Magnet - Sony TRINITRON KD-30XS955 Service Manual

6. Switch over the raster signal to red and blue and confi rm the
condition.
7. When the position of the defl ection yoke is determined, tighten it with
the defl ection yoke mounting screw.
8. Move the yoke up and down and/or side to side to fi nd the best
geometry. Once the best position is confi rmed mount the rubber
wedges to hold the yoke position in place for best geometry.
9. If landing at the corner is not right, adjust it by using the disk
magnets.
Disk magnets
or rotatable disk
magnets correct
these areas (a-d)
b
d

2-2. CONVERGENCE

Preparation:
• Set the CONTRAST and BRIGHTNESS control to standard (reset).
• Input a cross hatch pattern signal.
2-2.1. VERTICAL AND HORIZONTAL STATIC
CONVERGENCE
1. Set dynamic convergence to default values (as in 2-1. Beam Landing)
or disconnect the dynamic convergence before adjusting static
convergence (CN903), except for minor touch-up.
2. Adjust H.STAT convergence, RV9001, on CX Board to converge red,
green, and blue dots in the center of the screen.
3. Adjust V. STAT magnet to converge red, green and blue dots in the
center of the screen.
Center dot
RV9001
R G B
H-STAT
KD-30XS955/34XBR960/34XS955/36XS955
Purity control
corrects this area
a b
c d
Deflection yoke positioning
corrects these areas
(Check Areas)
a
c
R
G
B
V.STAT magnet
4. Tilt the V.STAT magnet and adjust static convergence to open or
close the V.STAT magnet.
1

2-3. V-PIN AND V-CEN ADJUSTMENT

Preparation:
• Input a cross hatch pattern signal.
• Set Video Mode to: Standard (Reset)
• For all 4X3 CRT, VPIN data has separate register for full and
V-compress. Adjust both modes if needed.
• For all 16X9 CRT, adjust VPIN data in normal mode for straightness
of horizontal line.
1. Adjust service mode CXA2170D-1 05 V-CEN so that the top pin and
bottom pin are symmetrical from top to bottom.
2. Adjust service mode CXA2170D-1 06 V-PIN so that the top pin and
bottom pin are symmetrical from top to bottom.
3. Horizontal lines should be straight from left to right. Check landing for
side effect.
2-3.1. OPERATION OF BMC (HEXAPOLE)
MAGNET
The respective dot positions result from moving each magnet interact.
Perform the following adjustments while tracking.
1. Use the BMC tabs to adjust the red, green and blue dots so that
they line up at the center of the screen (move the dots in a horizontal
direction).
HMC Correction
A < B
G
R
A B
R G B
A=B
A B
VMC Correction
C < D
C=D
R R
C
G
G
D
B B
KD-30XS955/34XBR960/34XS955/36XS955
B B
G G
R
R
HMC Correction
A > B
B
R
A
R G B
A=B
A
VMC Correction
C < D
C=D
R R
C
G
G
D
B B
G B
B
B
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