Convergence Adjustment - Sylvania CD202SL8 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.
Test point Adj. Point
C.P. Magnet (RB),
--- C.P. Magnet (RB-G),
Deflection Yoke
Tape M. EQ.
--- Pattern Generator
Figure
DEFLECTION YOKE
CRT
COIL SCREW
DY WEDGE
COIL CLAMPER
C.P. MAGNET (RB)
R
G
B
C.P. MAGNET (RB-G)
RB
G
1. Set the unit to the AUX mode which is located
before CH2, then input a dot or crosshatch pattern.
2. 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. 8.)
3. Align red / blue with green dots at the center of the
screen by rotating (RB-G) C.P. Magnet.
(See Fig. 9.)
4. Fix the C.P. Magnets by tightening the Ring Lock.
5. Remove the DY Wedges and slightly tilt the Deflec-
tion Yoke horizontally and vertically to obtain the
best overall convergence.
6. Fix the Deflection Yoke by carefully inserting the DY
Wedges between CRT and Deflection Yoke.
Mode Input
Dot Pattern
--- or
Crosshatch
Spec.
See below.
PURITY
RB RB-G
RING LOCK
SCREW
C.P. MAGNET
CLAMPER
C.P. MAGNET
Fig. 7
R
G
B
Fig. 8
RB
G
Fig. 9
6-7 P7450EA