Deflection Yoke Neck Rotation Adjustment; Convergence Adjustment - Sony TRINITRON PVM-14L3 Service Manual

2-8. 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
(2) Reverse cross
misconvergencepattern misconvergence pattern
Move the deflection yoke | Move the deflection yoke
downward, upward,
BGR RGB
RGB BGR
Fig. 2-18 Fig, 2-19
(3) Patter of left-sided (4) Pattern of right-sided
deflection yoke deflection yoke
Move the deflection —p Move the deflection —=g—-—
yoke to the right when yoke to the left when
viewed from the CRT viewed from the CRT
screen. screen.
L L L L
RB i R H i B
Fig, 2-20 Fig. 2-21
2zone
Fig. 2-23
2, Tum 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 mode! groups
1,2,3 and 6 are performed.
WShen model group 4 is
performed.
Fig. 2-24
PVM-taLartaLazoLs
4. The following patterns cannot be corrected by tarning
the neck. (Figs.2-25, 2-26, and 2-27)
+ Gun rotatuon
The X-axis and Y-axis
beams are distorted on
both sides.
won
Fig. 2-25
+ HOR Large (small)
G@ @) @) G
eco ooo}
The horizonal portion of the
G raster is wider (narrower)
than that of the RB raster on
both sides of the screen,
Fig. 2-26
»% HCR Large (small)
'The horizonal postion of the
G raster is wider (narrower)
than that of the RB raster on
both sides of the screen.
Fig. 2-27
2-9. Convergence Adjustment (2)
XeVv
Gita
R
YBH ¢
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R .
Sy we
n@s_TLH a@R
Fig. 2-28 Convergence compensation VR,coll,and
compensator
'When adjustment is insufficient, use permalloy for perfect
adjustment.