Read Panasonic KX-TS2388RUB / KX-TS2388RUW / KX-TS2388CAB / KX-TS2388CAW / KX-TS2388UAB / KX-TS2388UAW Service Manual online
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KX-TS2388RUB/KX-TS2388RUW/KX-TS2388CAB/KX-TS2388CAW/KX-TS2388UAB/KX-TS2388UAW
4.2.5.
Initializing Circuit
4.2.5.1.
Function
This circuit is used to initialize the CPU when the batteries are installed.
4.2.5.2.
Circuit Operation
When the batteries is inserted into the unit, then the voltage is regulated by IC302 and power is supplied to the CPU. The set
can operate in the circuit voltage diagram.
can operate in the circuit voltage diagram.
Regulator
(1AP PCB)
(1AP PCB)
Reset Circuit
(2AP PCB)
(2AP PCB)
IC302
1
VIN
2
GND
4
NC
5
VOUT
3
STBY
C301
Battery 4.5V
C302
C304
C303
D301
C864
IC861
1
VOUT
2
VCC
3
NC
4
GND
Q862
VCC
R863
R862
R833
R864
C862
Stop
Reset
Vcc
IC801 (105)
3.3 V
3.3 V
3.3 V
IC801 (81)
IC801 (50)
Reset
CPU Reset
Stop
2.7 V
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