Panasonic KX-A144 Series Service Manual page 85

(1)
R11
NC
(2)
(3)
(4)
(5)
+2.65V DC
+2.65V
TP187
(6)
(7)
33 PX.0
34 PX.1
35 PX.2
(8)
36 PX.3
37 VDD
38 VSS
(9)
39 SUPEEP
40 I2DAT
(10)
41 I2CLK
VBACK
42 MODE
R33
43 R2
(11)
44 R1
45
NC 46
47
48 VDD
(12)
(13)
3
2
0V DC ON-HOOK
+9.8V DC OFF-HOOK
TP50
R12
0
C8
R18
NC
Q5
3.9K
NC
Q4
R14
NC
NC
R15
NC
C21
D10P
R32
56
TX-AF
Q8 D5
+2.65V
VSSO 16
VDDPM 15
RESETQ 14
VSS 13
(7725:R33 N.M./R52 0ohm) VDD 12
SYRI 11
(7795:R33 1K/R52 N.M.)
PAON 10
IC2 TXDA 9
SYCL 8
SYDA 7
45:VBACK/P1.5 SYEN 6
46:VSS(DSPCLK) RXDA 5
47:P1.4(TONE) RXDSG 4
DRON 3
VSS 2
VDD 1
+2.65V
S1
R58
4
1
10K
KX-TCD440HGS / KX-TCD440HGT / KX-A144EXS-1 / KX-A144EXS / KX-A144EXT-1 / KX-A144EXT
0V DC ON-HOOK
+3.9V DC OFF-HOOK
R25
150
Q6
C79
NC
R21 C80
C13
100K K1.0 0 Q7
R27
680
R55
NC
RX-AF
TP188
R38
33
RX-DATA
2.7nH
KX-TCD440HGS/HGT SCHEMATIC DIAGRAM (BASE UNIT)
85
A201
1
DA1
C54
C58
C6P
C2P
R66
39
R67
39
C83
NC
TX-DATA
1 GND GND 28
2 GND VCC_PA 27
3
GND 26
GND
4 PAON 25
TXDA
5 RSSI PSEL 24
6 VCC_OC GND 23
IC3
7 GND GND 22
8 SYCL GND 21
20
9 SYDA RXDA
10 SYEN GND 19
18
11 GND GND
TP1
L1
4.7uH
L4
10.368MHz
Frequency
: No Components
A202
1