1-3. Beam Landing Adjustment
(1) Receive the green raster signal from the pattern generator.
(2) Loosen the magnet lock screw, and shift the magnet assembly
backward (toward the neck).
(3) Loosen the DY lock screw, and shift the DY deflecting yoke
backward (toward the neck).
(4) After opening the two purity magnets to the same angle, adjust
the color width of the bands on both sides of the screen so that
they are equal. (refer to Fig. 1-5 (a)).
R=B
R
G
B
Fig 1-5 (a)
As shown in Fig. 1-5 (b), the purity magnet functions in
relation to the electron beam.
(5) Gradually shift the deflecting yoke toward the front (toward
the CRT funnel). Stop movement at the point when the screen
has become completely green.
S
N
N
S
NS
SN
SS
S
S
N
N
NN
Fig 1-5 (b)
(6) Also, verify the respective monochromatics of red and blue.
(7) While looking at the screen, adjust the tilt of the deflecting
yoke and tighten the DY lock screw.
(8) Shift the magnet assembly to the front (toward the CRT funnel),
stop movement before the adjustment position and then tighten
the magnet lock screw.
At this time, be careful not to shift the position of the purity
magnet.