Matsushita Electric KX-TC1461LAB, Руководство по обслуживанию

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The power supply to the CPU (Digital, Analog) and RF IC from AC Adaptor (+9V) as shown in
diagram in
Reset Circuit ().
12.3. Reset Circuit
After power supply from AC adaptor, the VDD (5.0V) is input to Q6, Q7 for making reset signal.
Refer to the below waveform.
<Fig. 101>
<Fig. 102>
12.4. Charge Circuit
Circuit Operation:
When charging the handset on the base unit, the charge current is as follows;
DC+(9V) L1 CHG (Base) [CHG1 (Handset) D1 BAT1....Battery....BAT2 (GND) D2
D3 CHG2 (Handset)] CHG2 (Base) L7 ZD11 DC-(GND),
In this way, the CPU on both unit detects the fact that the battery is charged.
<Fig. 103>
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