Read Panasonic KX-TDA0175 / KX-TDA0175XJ / KX-TDA0175X (serv.man2) Service Manual Supplement online
3 SCHEMATIC DIAGRAM
3.1. No.1
+3.3V
R119
150
DG
LED1
43
1
2
3
4
TP144
TP141
R120
150
TP145
U1
1
4
3
2
5
TP140
0.047
C812
47K
R836
10K
R837
IC801
1
COMP
2
FB
3
ISENS
4
RT/CT
5
GND
6
OUT
7
VCC
VREF
8
250V/10
C810
24V
D805
12
+40V
50V/100
C817
22K
R834
750F
R831
20KF
R829
PC803
3
4
2.2K
R840
0.1
C808
PC803
1
2
22
R844
TP849
Q11
E
C
B
TP857
TP856
TP850
250V/10
C811
MWDC0
MWDC1
+3.3V
PC801
1
2
3
4
1.5K
R839
1.5K
R838
PC802
1
23
4
+3.3V
TP808
D802
15V
TP810
R806
100
Q801
E
C
B
R810
47K
Q805
E
C
B
R802
680
Q800
E
C
B
TP803
TP812
Q804
E
C
B
D800
15V
R804
680
IC800
4Vref
2
A
3
K
DG
R800
150
R801
150
C800
0.1/250V
C801
0.1/250V
TP851
TP800
TP801
TP845
TP844
1.2M
R832
Q809
E
C
B
+15V
22
R841
TP847
C813
0.1
C814
470P
22K
R842
C815
0.1
TP860
C816
0.1
39KF
R830
TP855
TP853 TP854
TP859
TP861
TP846
R812
10K
R816
10K
R814
1M
+30V
R818
7.5K
R820
47K
IC11
5
6
7
IC11
10
9
8
R822
390KF
0.082
C804
0.082
C806
IC11
1
2
3
4
11
R824
20KF
R826
180KF
R807
100
Q802
E
C
B
R813
10K
TP809
R817
10K
Q806
E
C
B
IC12
1
2
3
4
11
0.082
C805
IC12
5
6
7
R819
7.5K
R827
180KF
0.082
C807
IC12
10
9
8
Q807
E
C
B
R803
680
R815
1M
R823
390KF
R825
20KF
TP811
R821
47K
R805
680
Q803
E
C
B
TP814
+30V
D801
15V
D803
15V
TP806
4.7K
R828
PC800
1
2
3
4
TP829
TP825
TP827
TP823
TP821
TP819
TP817
TP828
TP824
TP826
TP822
TP820
TP818
TP816
0.1
C802
0.1
C803
IC12
12
13
14
TP805
RL800
5
1
10
TP848
TP837
250V/10
C809
+15V
Q808
E
C
B
TP840
RL800
2
9
D804
1
2
DG
TP843
220
R835
D807
1
2
D808
1
2
TP838
TP842
TP841
TP839
T800
1
2
2
4
5
5
6
7
8
9
10
D806
1
2
TP834
TP862
TP863
TP867
TP868
+3.3V
TP831
1K
R833
+3.3V
DG
PC804
1
2
3
4
+3.3V
TP871
1K
R846
4.7K
R845
TP802
TP872
TP836
TP835
TP832
C818
0.1
12K
R847
22K
R850
Q810
S 3
G
1
1
D
2
TP852
TP858
IC11
12
13
14
TP865
TP804
TP813
R848
100
TP807
TP815
R849
100
+3.3V
N.C
R852
N.C
R851
BELL1
BELL0
P.G
DG
P.G
DG
P.G
DG
P.G
DG
TP873
TP874
RA28
10K
1
2
3
4
5
6
7
8
9
10
RA3
10K
1
2
3
4
5
6
7
8
9
10
U800
1
4
3
2
5
6
TP833
-100V
TP830
+100V
+160V
R843
1.0
TOE[0-15]
TOE[6]
TOE[5]
TOE[4]
TOE[3]
TOE[2]
TOE[7]
TOE[0]
TOE[1]
GREEN
RED
b
m
(1)
(2)
~
(11)
(13)
(14)
~
(21)
(30)
(31)
(32)
(33)
(22)
~
(29)
(3)
~
(10)
4
BELL Circuit (ExT 1~8)
5
5
BELL Circuit (ExT 9~16)
8
10
9
11
7
6
TOE[0-15]
TOE[8]
TOE[9]
TOE[11]
TOE[10]
TOE[12]
TOE[13]
TOE[14]
TOE[15]
D[0-3]
D[0-3]
R861
47K
R808 R862
0
R865
R866
R811
47K
R863
47K
0
R867
R809R864
R868
0
0
47K
47K
47K
47K
R869
750F
12
KX-TDA0175 / KX-TDA0175XJ / KX-TDA0175X
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