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4. Auto Sweep Motor Circuit
Microcomputer
Fig. 4-1 shows the Auto sweep motor drive circuit; the signals shown in Fig.4-2 are output from pin 15 - 18 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
18
7
6
17
5
16
4
15
1
2
Fig.4-2 Microcomputer Output Signals
Rotation angle per step ( ˚ )
0.0882
12V
CN4
10
11
12
13
Fig.4-1
Step width : 10ms
3
4
5
Time per step (ms.)
- 39 -
Auto sweep motor for
horizontal air defectors
Rotor
6
7
8
10
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