Read Panasonic KX-TCD725GM Service Manual online
17 SCHEMATIC DIAGRAM (BASE UNIT)
17.1. Main
IC8
IC5
IC9
IC1
IC7
IC10
IC2
IC3
IC11
LINE VOLTAGE 48V DC +100mVrms at 1kHz
48V DC
+48V DC ON-HOOK
+6.8V DC OFF-HOOK
(at 40mA)
+6.8V DC OFF-HOOK
(at 40mA)
3.8V DC
2.8V DC
12V DC
+2.8V
PULLS TOWARDS
0V DURING RING
PULLS TOWARDS
0V DURING RING
1.4V DC
CHARGE
PULSE
PULSE
HANDSET ON CHARGE
+12V
+5V
RING
CLIP
(CALLER ID
(CALLER ID
(2)
(1)
(3)
(4)
(5)
(6~9)
(10~12)
(13)(14)
(15~21)
(25~27)
(22)
(23)
(24)
(28)
(29)
(30)
66
KX-TCD725GM
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