Convergence Adjustment - Symphonic ST413E Service Manual

13. Convergence Adjustment

Purpose: To obtain proper convergence of red, green
and blue beams.
Symptom of Misadjustment: If Convergence Adjust-
ment is incorrect, the edge of white letters may have
color edges.
Adj. Point
C.P. Magnet (RB),
C.P. Magnet (RB-G),
Deflection Yoke
M. EQ.
Pattern Generator
Figure
CRT
COIL
DY WEDGE
DEFLECTION YOKE
C.P. MAGNET (RB)
R
G
G
C.B. MAGNET (RB-G)
RB
G
1. Loosen the Ring Lock and align red with blue dots
or crosshatch at the center of the screen by rotating
(RB) C.P. Magnets. (See Fig. 7)
2. Align red / blue with green dots at the center of the
screen by rotating (RB-G) C.P. Magnet. (See Fig. 8)
3. Fix the C.P. Magnets by tightening the Ring Lock.
4. Remove the DY Wedges and slightly tilt the De-
flection Yoke horizontally and vertically to obtain
the best overall convergence.
5. Fix the Deflection Yoke by carefully inserting the
DY Wedges between CRT and Deflection Yoke.
Input
Dot Pattern or
Crosshatch
Spec.
See below.
PURITY RB RB-G
SCREW
RING LOCK
SCREW
C.P. MAGNET CLAMPER
C.P. MAGNET
COIL CLAMPER
Fig. 6
R
G
B
Fig. 7
RB
G
Fig. 8
5-6 L2200EA