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4. Auto Sweep Motor Circuit
18
Microcomputer
17
16
15
Fig. 4-1 shows the Auto sweep motor drive circuit; the signals shown in Fig.4-2 are output from pin E~H of
microcomputer.
Micro computer pins
Horizontal air deflectors
15
16
17
18
As the microcomputer's outputs change as shown in Fig.4-2, the coils of the auto sweep motor is excite to turn the
rotor. Table 4-1 shows the rotation angle of horizontal air deflectors.
Table 4-1 Auto sweep Motor Rotation
Horizontal air deflectors
IC711
7
10
6
11
12
5
13
4
Fig.4-1
Step width : 10ms
1
2
3
Fig.4-2 Microcomputer Output Signals
Rotation angle per step (
0.0882
– 32 –
12V
Auto sweep motor for
CN4
horizontal air defectors
4
5
6
)
Time per step (ms.)
10
Rotor
7
8
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