Read Panasonic KX-TCD460UA / KX-A146UA-1 / KX-A146UA Service Manual online
38 SCHEMATIC DIAGRAM (BASE UNIT)
IC1
1
A0
2
A1
3
A2
4
GND
5
SDA
6
SCL
7
WP
8
VCC
+5.5V
+4.0V
6.3V100
C41
D4
220
R42
100
R41
TP90
TP91
C40
16V100
TP89
Q9
3
ADJ
2
VOUT
1
VIN
4
VOUT
+2.65V
680P/500V
C1
100
R29
R5
220K
J1
1
2
3
4
5
6
TP45
TP39
D10P
C19
D10P
C18
Q3
D2
1.5M
R2
2.2K
R10
R6
180K
TP2
2.7K
R8
SA1
100
R30
TP40
R3
220K
K0.022
C4
R4
180K
1.5M
R1
RLY1
NC
1
2
3
4
7
8
9
10
10K
R9
K0.022
C3
100K
R7
TP5
33
R43
TP84
33
R44
J2
1
GND
2
DC_PLUG
5.6M
R53
180K
R54
K0.01
C49
180K
R82
K0.01
C74
5.6M
R81
TP3
TP101
J105
1
J101
1
J104
1
J103
1
VBACK
+2.65V
J102
1
680P/500V
C2
1
CHARGE-
2 CHARGE+
Q2
C89
K1000P
TP201’Ringer +’
R68
39
R89
1K
D9
+4.0V
C90
J100P
Q10
TP202’Ringer -’
C60
NC
C62
NC
C5
NC
C63
NC
C92
NC
NC
C7
C91
NC
C6
NC
D1
NC
JMP3
NC
JMP2
NC
JMP7
NC
NC
JMP5
JMP6
NC
JMP4
NC
NC
JMP8
JMP1
NC
L2
NC
R73
NC
R71
NC
R74
NC
R77
NC
NC
R70
R72
NC
Q11
NC
Q1
NC
C77
250V0.47
R85
12K
D8
0
D7
0
C96
D10P
C99
D10P
OPTION4
’SCL’
’SDA’
(13)
(12)
(11)
(10)
(6)
(5)
(4)
(3)
(2)
(1)
(9)
(8)
(7)
: No Components
0V DC ON-HOOK
+0.7V DC OFF-HOOK
+0.7V DC OFF-HOOK
Bell & Clip
+60V DC ON-HOOK
+10V DC OFF-HOOK
+10V DC OFF-HOOK
60v
DC
DC
LINE VOLTAGE 60V DC
+4.0V DC
86
KX-TCD460UA / KX-A146UA-1 / KX-A146UA
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