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15. 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
Figures
CRT
COIL
DY WEDGE
DEFLECTION YOKE
C.P. MAGNET (RB)
R
G
B
C.B. MAGNET (RB-G)
RB
G
Mode
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
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-
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.
5-7
L6552EA
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