Deflection Yoke Neck Rotation Adjustment - Sony TRINITRON PVM-14L2 Service Manual

4. For HMC, use the BMC Mg to adjust the R and B dots
so that they will be symmetrical horizontally with
respect to the G dot.
I I'
A B
6-pole magnet
Change the opening
degree of the BMC Mg
to control the HMC.
Fig. 2-15
5. For VMC, use the BMC Mg to adjust the R and B dots
so that they will be symmetrical vertically with respect
to the G dot.
Do not change.
(Top)
(Bottom)
6-pole magnet
For VMC control, turn
knob to the right or left
without changing their
opening degree of the
BMC Mg.
Fig. 2-16
6. Repeat the adjustment steps from 2 through 5.
* The above adjustment may affect the landing, so after
adjustment, check the landing again.
7. Paint-lock the knobs after adjustment.
PVM-14L2/20L2
R G B
A A'
Control the BMC Mg so
that A=A'. Maintain I = I'
when moving the Mg.
R G B
Make adjustment so
that the gap will be the
same at the top and bottom.
2-10. 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.
* Applicable only to groups of models inch 14.
(1) Reverse cross
mis-convergencepattern
Move the deflection yoke
downward.
B G R
R B
G G
B R
R G B
Fig. 2-17
(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. 2-19
Fig. 2-21
2. Turn the neck of the deflection yoke to align the V pin
vertically.
* Applicable only to group of models inch 20.
3. Insert the wedge between the deflection yoke and CRT
funnel to lock the deflection yoke.
Inch 14
Fig. 2-22
(2) Cross
mis-convergence pattern
Move the deflection yoke
upward.
R G B
B R
G G
R B
B G R
Fig. 2-18
(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. 2-20
2 zone
1 zone
Inch 20
2-11