17.2. Battery Low / Power Down Detector
Circuit Operation:
“Battery Low” and “Power Down” are detected by RF IC which check the voltage from battery.
Shortly, every detected blocks are inside of RF IC. The detected voltage is as follows;
- Battery Low
Battery voltage : V(Batt) < 3.57V
The CPU detects this level and “Recharge battery” LED starts
flashing.
- Power Down
Battery voltage : V(Batt) < 3.3V
The output of RF IC (P-DOWN) becomes low level, then CPU stops
working to keep the data (CH number, ID Code, etc.)
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Summary of Contents for KX-TC1206TWB
Page 3: ...1 2 Battery information 2 BATTERY REPLACEMENT 3 ...
Page 4: ...3 LOCATION OF CONTROLS 3 1 Base Unit 4 ...
Page 5: ...3 2 Handset 5 ...
Page 6: ...4 CONNECTION 6 ...
Page 9: ...5 OPERATIONS 5 1 Making Calls 5 2 Answering Calls 9 ...
Page 10: ...5 3 Storing Phone Numbers in Memory 5 4 Storing a Phone Number in the DIRECT Button 10 ...
Page 11: ...5 5 Dialing a Stored Number 5 6 Dialing the Stored Number in the DIRECT Button 11 ...
Page 12: ...5 7 Flash Button 6 DISASSEMBLY INSTRUCTIONS 12 ...
Page 28: ...28 ...
Page 30: ... The channel is changed if the noise interferes with the conversation 13 2 Ringing 30 ...
Page 31: ...13 3 Changing the Channel 31 ...
Page 43: ...Fig 6 18 CPU DATA Base Unit 18 1 IC2 43 ...
Page 44: ...19 CPU DATA Handset 19 1 IC2 44 ...
Page 45: ...20 HOW TO REPLACE FLAT PACKAGE IC 20 1 Preparation SOLDER 45 ...
Page 48: ...22 CABINET AND ELECTRICAL PARTS LOCATION HANDET 48 ...
Page 49: ...23 ACCESSORIES AND PACKING MATERIALS 49 ...
Page 64: ...H M KXTC1206TWB KXTC1206TWS KXTC1206TWF KXTC1206TWP 64 ...
Page 67: ...IC5 ...
Page 69: ...IC2 150Ω AF Volt Meter H Oscilloscope G Noise Squelch A Battery Low 47µF AF Generator ...
Page 71: ...IC2 G Noise Squelch A Battery Low VDD CPU 40 CHG DET CPU 37 TX DATA CPU 36 TX DATA DV1 ...
