Read Panasonic KX-TCD725RUM Service Manual online
17 SCHEMATIC DIAGRAM (BASE UNIT)
17.1. Main
N.M.
N.M.
0R
N.M.
N.M.
N.M.
N.M.
N.M.
N.M.
N.M.
0R
0R
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)
64
KX-TCD725RUM
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