DOWNLOAD Panasonic KX-TCD725GM Service Manual ↓ Size: 2.21 MB | Pages: 79 in PDF or view online for FREE

Model
KX-TCD725GM
Pages
79
Size
2.21 MB
Type
PDF
Document
Service Manual
Brand
Device
Telephone / DECT
File
kx-tcd725gm.pdf
Date
PREV: Panasonic KX-TCD725 (serv.man2) Service Manual / Supplement

Panasonic KX-TCD725GM Service Manual ▷ View online

16.4.  MEMO
65
KX-TCD725GM
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)
3.8V DC
2.8V DC
12V DC
+2.8V
PULLS TOWARDS
0V DURING RING
1.4V DC
CHARGE 
PULSE
HANDSET ON CHARGE
+12V
+5V
RING
CLIP
(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
IC6
IC4
0V DC ON-HOOK
+6.7V DC OFF-HOOK
0V DC ON-HOOK
+3.6V DC OFF-HOOK
0V DC ON-HOOK
+2.8V DC OFF-HOOK
RX-DATA
RX-AF
TX-DATA
FREQUENCY: 96kHz
2.8V
0V
10.368MHz burst
+2.0V peak
TX-AF
(2)
(1)
(3)
(4)
(5)
(6~9)
(10~12)
(13)(14)
(15~21)
(25~27)
(22)
(23)
(24)
(28)
(29)
(30)
KX-TCD725GM: SCHEMATIC DIAGRAM (BASE UNIT) Main
67
KX-TCD725GM
17.2.  RF Module
(3)
(4)
(5)
(6)
(7)
(2)
(1)
IC402
68
KX-TCD725GM
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