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3. Fully
degauss
the
degaussing coil.
4. Loosen the screw on the Deflection Yoke Clamper
and pull the Deflection Yoke back away from the
screen. (See Fig. 6)
5. Loosen the Ring Lock and adjust the Purity
Magnets so that a red field is obtained at the
center of the screen. Tighten Ring Lock. (See Fig.
5,6)
6. Slowly push the Deflection Yoke toward bell of
CRT and set it where a uniform red field is
obtained.
7. Tighten the clamp screw on the Deflection Yoke.
17. Convergence Adjustment
Purpose: To obtain proper convergence of red, green
and blue beams.
Symptom
of
Misadjustment:
Adjustment 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
unit
using
an external
If
Convergence
Mode
Input
Dot Pattern
---
or
Crosshatch
Spec.
See below
CRT
DY WEDGE
DEFLECTION YOKE
C.P. MAGNET (RB)
R
G
B
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. Paintlock the C.P. Magnets after adjustment.
4. Remove the DY Wedges and slightly tilt the
Deflection 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
Figure
COIL
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
Fig. 8
L3300EA
G
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