Focus - Sony TRINITRON KV-20FS120 Service Manual

Dynamic Convergence Adjustment
Before performing this adjustment, perform Horizontal and Vertical Static
Convergence Adjustment.
1. Slightly loosen defl ection yoke screw.
2. Remove defl ection yoke spacers.
3. Move the defl ection yoke for best convergence as
shown below:
R G B B G R
4. Tighten the defl ection yoke screw.
5. Install the defl ection yoke spacers.
TLH Plate Adjustment
1. Input crosshatch pattern.
2. Adjust PICTURE QUALITY to standard, PICTURE and BRIGHTNESS
to 50%, and OTHER to standard.
3 Adjust the Horizontal Convergence of red and blue dots by tilting the
TLH plate on the defl ection yoke.
RV1750
TLH Plate
V.STAT
CV
Board
(YHC, TLV) 20"/21" Models
(TLV, XCV, YCH, TLV) 24"/25" Models
KV-20FS120/21FM120/21FS120/21FA310/24FS120/25FS120
B G R B
R
G G
B R
R G B
B G R R G
R G B
R
B
G G
R B
B G R
YCH TLV
XCV
(TLV)
4. Adjust XCV core to balance X axis.
5. Adjust YCH VR to balance Y axis.
6. Adjust vertical red and blue convergence with V.TILT (TLV VR.)
Note: Perform adjustment 3-6 while tracking items 1 and 2.
Screen-Corner Convergence
1. Affi x a permalloy assembly corresponding to the misconverged areas:
B

2-3. FOCUS

1. Adjust FOCUS control for best pictures.
KV-20FS120/21FM120/21FS120/21FA310/24FS120/25FS120
B R R B
TLH+
(R)(B) (B)(R)
TLH-
b a
a
a-d: screen-corner
misconvergence
c
c
d
Focus (FV)
Screen (G2)
b
d
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