Focus Adjustment - Sony TRINITRON KV-G142M Service Manual

KV-G14M2
RM-869
(2) Dynamic Convergence Adjustment
Preparation :
Before starting this adjustment, adjust the horizontal static
convergence and the vertical static convergence.
1. Slightly loosen the deflection yoke screws.
2. Remove the deflection yoke spacer.
3. Move the deflection yoke as shown in the figure below and
optimize the convergence.
4. Tighten the deflection yoke screws.
5. Install the deflection yoke spacer.
(3) Screen-corner Convergence
b
c
Fix a Permalloy assy
corresponding to the
misconverged areas
R
a
a-d : screen-corner
misconvergence
d
b
a to d : Permalloy assembly
G B B G R

3-3. FOCUS ADJUSTMENT

Adjust FOCUS control on the C board (RV703) for the best focus.
– 14 –
R B
B G R
G G
R G B
B R
B
B R
R G B
G G
B G R
R B
G R R G B