Read Panasonic KX-NS5171XSX / KX-NS5172XSX Service Manual online
10
KX-NS5171X/KX-NS5171SX/KX-NS5172X/KX-NS5172SX
Power supply is 40V only.
40V20mA and 40V80mA constant-current circuits by Q300, U302, R307, and R310 are used.
The following is the flow chart of telephone switching at boot-up.
40V20mA and 40V80mA constant-current circuits by Q300, U302, R307, and R310 are used.
The following is the flow chart of telephone switching at boot-up.
PT_POW
PT_CUR
H
H
0V
H
L
0V
L
H
40V80mA
L
L
40V20mA
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