Convergence Adjustment - Sylvania SRT2227S Service Manual

19. 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.
Test Point Adj. Point
C.P. Magnet
(RB),
--- C.P. Magnet
(RB-G),
Deflection Yoke
Tape M. EQ.
Pattern
---
Generator
CRT
DY WEDGE
DEFLECTION YOKE
C.P. MAGNET (RB)
R
B
C.B. MAGNET (RB-G)
RB
Mode
Dot Pattern
---
Crosshatch
Spec.
See below.
Figures
RB RB-G
COIL PURITY
SCREW
RING LOCK
SCREW
C.P. MAGNET CLAMPER
C.P. MAGNET
COIL CLAMPER
Fig. 6
G
RB
G
Fig. 8
1. Loosen the Ring Lock and align red with blue dots
or Crosshatch at the center of the screen by rotat-
ing (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-
Input
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.
or
R
G
B
Fig. 7
G
5-8 L6200EA