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CQ-RD445LEN
CQ-RD435LEN
Warning Alarm System
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The security LED filckers when the LED is ON. When the removable face is removed and the lever is
pushed, the SW601 turens ON, and the alarm sound signals of 1.2kHz and 2.4kHz are output from the pin
14 of the IC601 (CPU). This signal is entered in pin 2 of IC207 (Analog SW), and is output at pin 1. Then, it
is entered in pin 14 (MONO inpti) of IC205 (Electronic VOL), the obtained output passes through
IC271(AMP) and is output through the loudspeaker for 1 minute in the form of alarm sound. To stop the
alarm sound, install the removable face to the unit.
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The alarm will not operate if the removable face is not removed.
_ Warning Alarm System Block Diagram
IC205
(4) Volume
Control
Speaker
-42.
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