Read Panasonic KX-TS2368CAW Service Manual online
12
KX-TS2368CAW
4.2.7.
Reset Circuit
4.2.7.1.
Function
This circuit is used for to reset the microcomputer when inserting batteries.
4.2.7.2.
Circuit Operation
When the batteries is inserted into the unit, then the voltage is shifted by D304 and power is supplied to the CPUas shown
below.
below.
IC303
IC304
VCC
(CPU)
Battery
GND
Reset
(CPU)
Power
Down
(CPU)
R
3
12
C
3
0
3
R
3
11
C
3
05
C
3
0
8
NC
Q302
R310 C304
VOUT
VCC
GND
NC
R313
3
2
1
OUT
VSS
IN
Vcc
CPU (7)
3.7 V
3.7 V
3.7 V
CPU (9)
CPU (8)
Reset
CPU Reset
Power down
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