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M7LXU
b , Verticat Magenta Band
a a-a�, b-b� Show the geometric center line of CPT Screen b�
(9) Move OY so that the rear edge position of DY comes to the center of the two marked lines and fasten OY as d=d� (Figure l-3-4). Futher insert the rubber wedge between OY and CPT funnel from the top and raise OY backwards.
FIGURE 1-3-4
r-
b
-l
I
;:;I
d a t t L
d� + t / a�
Geometric center
line of CPT
C-F MAC P#2773672
C-F MAGNET P#2773671
The openings of the purity magnet should be symmetric: on the right and left sides (P#2773671) on the upper and lower sides (P#2773672)
FIGURE 1-3-2
(7) Receive the single red signal. When the single red signal is not available, shortcircuit between the base and emitter of Q845, and between the base and emitter of Q857 and set to single red. (8) Pull back OY gradually and when the color uneveness of both sides of the picture disppear, mark the rear edge position of OY on the tape wound around CPT neck as shown in Figure l-3-3. Pull back OY further and just before the color uneveness of both sides of the picture disappear, mark the rear edge position of OY on the tape in the same way. At this time, pull back OY so that the center axis of OY and CPT axis match.
(10) Set CPT axis direction magnetic field of the artificial magnetic field according tho the artificial magnetic field setting list classified by destination. (The direction of the magnetic field should be from the CPT screen side to the neck side.) (11) After degaussing it from outside, check the purity in each color to R, G and B visually. Then, turn the screen to white and check the landing at the screen position shown in Fig. 1-3-5 with a microscope.
Criteria
with microscope
There should be no miss landing at positions 2, 4, 8 and IO. Green beam should be at center of the green phosphor at position C. (Refer to the miss landing criteria.) (12) Turn over the direction of CPT axis direction magnetic field of the next artificial magnetic field and check it by the same way as item (11). The positions of miss landing criteria with a microscope should be 2, 4, 8 and IO (Figure I-3-5).
0 10
C
02
4-er8Ommx5
l--+--l
08
REAR EDGE OF DY SCOTCH 7
0 4 I
FIGURE l-3-5
.YARKING
u
CPT Neck
The following conditions are defined as miss landing. Each color beams shines on the phos-
FIGURE
l-3-3
phor of the applied color and there are phosphor parts which are not luminous (shaded parts in
