Read Panasonic KX-TCD420RUM / KX-TCD420RUS / KX-A142RUM / KX-A142RUS Service Manual online
36 SCHEMATIC DIAGRAM (BASE UNIT)
+5.5V
+4.0V
6.3V100
C41
D4
220
R42
100
R41
TP90
TP91
C40
10V100
TP89
Q9
3
ADJ
2
VOUT
1
VIN
4
VOUT
+2.65V
500V680P
C1
100
R29
J1
1
2
3
4
5
6
500V680P
C2
TP45
TP39
D10P
C19
D10P
C18
Q1
NC
NC
D1
NC
JMP5
Q3
JMP6
NC
JMP7
NC
D2
JMP2
NC
1.5M
R2
2.2K
R10
TP2
2.7K
R8
SA1
100
R30
JMP1
NC
JMP3
NC
C5
NC
C6
NC
TP40
1.5M
R1
RLY1
NC
NC
1
2
3
4
7
8
9
10
10K
R9
100K
R7
JMP4
NC
TP5
33
R43
NC
R45
TP84
33
R44
D10P
C50
R58
10K
+2.65V
+4.0V
LED1
R68
150
C60
NC
Q11
NC
NC
R70
R71
NC
R74
NC
R73
NC
C62
NC
R72
NC
L2
NC
C63
NC
R77
0
J2
1
2
DC_PLUG
IC4
1
A11
2
A9
3
A8
4
A13
5
A14
6
A17
7
WR
8
VCC
9
A18
10
A16
11
A15
12
A12
13
A7
14
A6
15
A5
16
A4
17
A3
18
A2
19
A1
20
A0
21
D0
22
D1
23
D2
24
GND
25
D3
26
D4
27
D5
28
D6
29
D7
30
CE
31
A10
32
0E
C23
K0.1
C26
K0.1
R83
2.2K
+2.65V
R80
2.2K
R84
10K
K0.1
C76
+2.65V
180K
R82
5.6M
R81
K0.01
C74
5.6M
R53
K0.01
C49
180K
R54
K0.022
C4
K0.022
C3
R6
180K
R4
180K
R3
220K
R5
220K
Q10
R36 0
S1
3
4
2
1
TP101
NC
JMP8
C79
K1000P
C78
K1000P
TP85
20V
D7
500V680P
C31
C64
K1000P
L4
0
J100P
C87
J100P
C59
J100P
C52
D1
0
4.7V(M)
D10P
C89
D10P
C88
TP3
R37 0
R39 0
R40 0
K3300P
C7
C77
250V0.47
R85
12K
Q2
IC1
32K_EEPROM
1
A0
2
A1
3
A2
4
GND
5
SDA
6
SCL
7
WP
8
VCC
A00
A01
A02
A03
A04
A05
A06
A07
A08
A09
A10
A11
A12
A13
A14
A15
A16
A17
A18
A02
A08
A11
A14
OPTION4
(14)
(15)
(10)
(11)
(11)
(12)
(13)
(3)
(4)
(5)
(6)
(2)
(1)
(7)
(8)
(9)
: No Components
60v
DC
DC
LINE VOL TAGE 60V DC
+60V DC ON-HOOK
+10V DC OFF-HOOK
+10V DC OFF-HOOK
OV ON-HOOK
+0.7V DC OFF-HOOK
+0.7V DC OFF-HOOK
+4.0V DC
81
KX-TCD410RUM / KX-TCD410RUS / KX-TCD412RUM / KX-TCD412RUS / KX-A141RUM / KX-A141RUS / KX-A142RUM / KX-A142RUS
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