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Panasonic KX-TCD430FXB Service Manual page 55

Telephone eguipment

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Battery voltage: V(Batt) < 2.3V
The BBIC detects this level and "
"battery alarm" starts ringing.
- Power Down
Battery voltage: V(Batt) < 2.2V
The BBIC detects this level and power down.
23. CIRCUIT OPERATION (CHARGER UNIT)
23.1. Power Supply Circuit
The power supply is as shown.
24. SIGNAL ROUTE
" starts flashing and
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