Samsung CHA4217L Service Manual page 22

6 Alignment and Adjustments
6-4 Convergence Adjustments
Misconvergence occurs when one or more of the
electron beams in a multibeam CRT fail to meet
the other beams at a specified point.
Table 6-4. Misconvergence Tolerances
Position Error in mm
Center (A) 0.30
Edge (B) 0.40
B
200 MM
Figure 6-10. Convergence Measurement Areas
Red and Blue Alignment
(4-pole magnet movement)
(1) SPREAD
TAB
MAGNET
OR
MOVE
TOGETHER
6-8
CRT Dot Pitch
0.28
0.28
A
267 MM
Figure 6-12. Magnet Movements
O-Magnetic
R
Field
Motion (1)
R
Motion (2)
R
11
1 Setup Bolt 2 Bow Magnet
5 Band 6 6-Pole Magnet
9 Holder 10 Band
Figure 6-11. Magnet Configuration
B
VERTICAL
MISALIGNMENT
B
R
HORIZONTAL
MISALIGNMENT
B
B
R
SHIFT DIRECTION OF
CROSSHATCH PATTERN
B
B
R
SHIFT DIRECTION OF
CROSSHATCH PATTERN
1
10
Toshiba CRT
3 Spacer
7 Spacer
11 Tabs
Red, Blue and Green Alignment
(6-pole magnet movement)
G
M
G
RB
G
M
G
RB
G
M
G
M
CRT
FRONT
2
3
4
5
6
7
8
9
4 2-Pole Magnet
8 4-Pole Magnet
CHA42*7L/5**7L