- 21 -
+
+
+
TLV VR 28"
Deflection Yoke
+
+
+
TLV VR 32"
Deflection Yoke
+
+
+
YCH VR 28"
Deflection Yoke
+
+
+
YCH VR 32"
Deflection Yoke
Tilt Direction
If you are unable to adjust the corner convergence properly,
this can be corrected with the use of permalloy magnets.
HTIL correction can be performed by adding
one
TLH
correction assembly to the Deflection yoke.
HTIL Adjustment
YCH Adjustment
TLV Adjustment
Geometry Adjustment.
Preparation:
Before starting this adjustment, adjust the horizontal and
vertical static convergence.
1.
Remove the deflection yoke spacer.
2.
Tilt the deflection yoke as indicated in the figure below and
optimise the geometry.
Tilting the DY Up and Down a small amount will balance
the upper and lower pin adjustment.
3.
Re-install the deflection yoke spacers. Ensure 4 DY spacers are
reinserted
Screen Corner Convergence
a
b
d
Permalloy Assy
c
Install the permalloy assembly
for the area that needs correcting.
X-4387-214-1
Convergence adjustment with permalloy
APH circuit
harness
Deflection Yoke
TLH Piece
H-Trap
YCH
TLV
Deflection Yoke
TLH Piece
H-Trap
YCH
TLV
4.
The H-Trap and T-B Pin may not achieve a good level due
to a small tilt allowance on the square DY. Keep the DY in
a straight position and adjust H-Trap pot (See diagram for
HTIL Adjustment) and Y-Mg for T-B Pin, as below.
28”
32”
• APH Convergence parameter is electrically controlled. For this
reason a TLH piece may not be required.
(APH = Red vertical lines on the edge of the screen).
a-d: screen-corner
convergence defect
a
b
c
d