KX-TCD725GM - Panasonic Telephone Service Manual (repair manual). Page 70

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18 SCHEMATIC DIAGRAM (HANDSET)
18.1.  Main
(1)
(2~9)
(11~15)
(16~20)
(21~28)
(29~31)(32~35)
(48)
(10)
(36~41)
(42~47)
IC3
3.8V DC
Frequency 
160kHz
7.2V
3.4V to 4.8V SWITCHING DURING CHARGE
2.2V LED ON
0V LED OFF
2.65V DC
2.4V
2.65V
0V
0V
4.1V
MA2H736
MA2J111
T6  BCB08-25
FDN335N
MA112
BCB08-40
DTC143X
MA2J111
MA2J111
DTC143X
70
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