Deflection Yoke Neck Rotation Adjustment - Sony TRINITRON PVM-14L1 Service Manual

2-7. Deflection Yoke Neck Rotation
Adjustment
1. If there are mis-convergence on both sides of X and Y
axes, move the DY neck in the direction of the arrow
so that the degree of mis-convergence satisfies the
allowable range of specification over the entire screen.
(1) Reverse cross
mis-convergencepattern
(2) Cross
mis-convergence pattern
Move the deflection yoke Move the deflection yoke
downward. upward.
GBR
BGR RGB
Fig. 2-18 Fig. 2-19
(3) Pattern of left-sided
(4) Pattern of right-sided
deflection yoke deflection yoke
Move the deffection ——»-
yoke to the right when
Move the deflection ~™———
yoke to the left when
viewed from the CRT viewed from the CRT
screen. screen.
fa. Ee ep
RB BR BR R B
Fig. 2-20 Fig. 2-21
2. Insert the wedge between the deflection yoke and CRT
funnel to lock the deflection yoke. (Fig.2-18)
Inch 20 Inch 14
Fig. 2-18
2-8
wD
The following patterns cannot be corrected by turning
the neck. (Figs.2-19, 2-20, and 2-21)
* Gun rotation
The X-axis and Y-axis
beams are distorted on
both sides.
Fig. 2-19
* HCR Large (small)
G (GQ) (G) G The horizontal portion of the
ooo ooo G raster is wider (narrower)
R R than that of the RB raster on
B B both sides of the screen.
Fig. 2-20
* VCR Large (small)
The vertical portion of the
G raster is wider (narrower)
than that of the RB raster on
both sides of the screen.
Fig. 2-21
PVM-14L1/14L1Mtez/20L1
SSM-14:8 /20L1