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Deflection Yoke Neck Rotation Adjustment; Convergence Adjustment (2) - Sony TRINITRON PVM-14L5 Service Manual

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2-11. Deflection Yoke Neck Rotation
Adjustment
1. If there is nonconvergence on both sides of the X or Y
axis of the screen, turn the neck of the deflection yoke
in the direction of the arrow to hold the nonconver-
gence for the entire CRT screen within the tolerance.
* Applicable only to groups of models 1, 2, 3, and 5.
(1) Reverse cross
misconvergencepattern
Move the deflection yoke
downward.
B G R
R
B
G
G
B
R
R G B
Fig. 2-18
(3) Pattern of left-sided
deflection yoke
Move the deflection
yoke to the right when
viewed from the CRT
screen.
L
L
R
B
B
R
Fig. 2-20
Fig. 2-23
2. Turn the neck of the deflection yoke to align the V pin
vertically.
* Applicable only to group of models 4.
3. Insert the wedge between the deflection yoke and CRT
funnel to lock the deflection yoke. (Fig.2-24)
When model groups
1,2,3 and 5 are performed.
Inch 14
Fig. 2-24
2-22
(2) Reverse cross
misconvergence pattern
Move the deflection yoke
upward.
R G B
B
R
G
G
R
B
B G R
Fig. 2-19
(4) Pattern of right-sided
deflection yoke
Move the deflection
yoke to the left when
viewed from the CRT
screen.
L
L
B
R
R
B
Fig. 2-21
2 zone
1 zone
WShen model group 4 is
performed.
Inch 20
4. The following patterns cannot be corrected by turning
the neck. (Figs.2-25, 2-26, and 2-27)
R G B
R
B
G
G
B
R
R G B
Fig. 2-25
G
(G)
(G)
G
R
R
B
B
Fig. 2-26
G
R B
(G)
(G)
R B
G
Fig. 2-27

2-12. Convergence Adjustment (2)

YCH
G
B
R
TLV
R
G
B
R
G
B
TLH
G
G
R B
B R
Fig. 2-28 Convergence compensation VR,coil,and
compensator
n
When adjustment is insufficient, use permalloy for perfect
adjustment.
* Gun rotatuon
The X-axis and Y-axis
beams are distorted on
both sides.
* HCR Large (small)
The horizonal portion of the
G raster is wider (narrower)
than that of the RB raster on
both sides of the screen.
* HCR Large (small)
The horizonal portion of the
G raster is wider (narrower)
than that of the RB raster on
both sides of the screen.
XCV
B
G
R
YBH
G
R
B
PVM-14L5/20L5/D14L5A/D20L5A

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