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(2) Buzzer driving circuit (located on display PCB)
g Only the buzzer sound for the Lock/Unlock operation is shown in this SVC technical manual.
Status
Ex) Lock: "Ding-D-Dong" sound
Measuring
point
5V
IC101 (Pin 3/61)
0V
5V
IC101 (Pin 2/62)
0V
3-2-5. SWITCH INPUT CIRCUIT
Following circuits are input circuits for detecting signal of the test switch for checking refrigerator or the reed switch of the
single motor damper.
45ms
45ms 45ms 45ms 70ms
750ms
1046.5Hz 1174.7Hz
1318.5Hz
Ex) Lock: "Ding-D-Dong" sound
45ms
45ms 45ms 45ms 70ms
5V
0V
5V
0V
1568.0Hz 1318.5Hz
- 17 -
Off
750ms
5V
0V
1046.5Hz
REED Switch
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