Panasonic KX-TCD460UA / KX-A146UA-1 / KX-A146UA Service Manual ▷ View online
37 FOR SCHEMATIC DIAGRAM
37.1. Base Unit (SCHEMATIC DIAGRAM (BASE UNIT))
Notes:
1. DC voltage measurements are taken with voltmeter from the negative voltage line.
2. This schematic diagram may be modified at any time with the development of new technology.
37.2. Handset (SCHEMATIC DIAGRAM (HANDSET))
Notes:
1. DC voltage measurements are taken with an oscilloscope or a tester with a ground.
2. The schematic diagrams and circuit board may be modified at any time with the development of new technology.
37.3. Charger Unit (SCHEMATIC DIAGRAM (CHARGER UNIT))
Notes:
1. DC voltage measurements are taken with voltmeter from the negative voltage line.
2. This schematic diagram may be modified at any time with the development of new technology.
85
KX-TCD460UA / KX-A146UA-1 / KX-A146UA
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
IC2
1
VDD
2
VSS
3
DRON
4
RXDSG
5
RXDA
6
SYEN
7
SYDA
8
SYCL
9
TXDA
10
PAON
11
SYRI
12
VDD
13
VSS
14
RESETQ
15
VDDPM
16
VSSO
17
LOAD
18
XTAL
19
VDDLF
20
LRB
21
VDDA
22
VSSA
23
AON
24
AOP
25
BREF
26
DLP
27
DLN
28
AIN
29
ADREF
30
ADRSSI
31
AD2(MPCINP)
32
AD3
33 PX.0
34 PX.1
35 PX.2
36 PX.3
37 VDD
38 VSS
39 SUPEEP
40 I2DAT
41 I2CLK
42 MODE
43 R2
44 R1
45
34 PX.1
35 PX.2
36 PX.3
37 VDD
38 VSS
39 SUPEEP
40 I2DAT
41 I2CLK
42 MODE
43 R2
44 R1
45
45:VBACK/P1.5
46
46:VSS(DSPCLK)
47
47:P1.4(TONE)
48 VDD
49
DSPIN/P1.0
50
DSPOUT/P1.1
51
DSPCLK/P1.2
52
DSPFRM/P1.3
53
VSS
54
VDD
55
P0.0
56
P0.1
57
P0.2
58
P0.3
59
P0.4
60
P0.5
61
P0.6
62
P0.7
63
ANT1
64
ANT2
Q8
C32
J27P
C33
C1P
C25
6.3V10
C24
K0.1
C23
K0.1
C37
K0.1 C36
K0.1
C34
K0.1
C30
K1800P
C29
K0.068
C28
K0.068
C26
K0.1
C38
K0.1
C35
K0.033
C43
D10P
K0.47
C12
3.9K
R18
50V10
C15
D10P
C21
100
R31
K0.1
C20
D3
22
R19
TP97
390
R25
470
R28
33K
R22
K0.1
C14
K0.015
C11
56
R20
TP50
Q6
13K
R16
100K
R21
R12
0
56
R23
K1.0
C13
K0.22
C16
56
R32
K0.1
C22
R38
33
+2.65V
IC3
5 RSSI
6 VCC_OC
7
8 SYCL
9 SYDA
6 VCC_OC
7
8 SYCL
9 SYDA
10 SYEN
11 GND
12
RXDSG
13
SYRI
14
GND
15
GND
16
GND
17
GND
18
GND
19
GND
20
RXDA
21
GND
22
GND
GND
GND
23
24
PSEL
25
PAON
26
GND
27
VCC_PA
28
GND
29
GND
30
GND
31
GND
32
GND
33
RF1
34
GND
GND
1
GND
2
GND
3
TXDA
4
VBACK
+2.65V
R57
10K
L1
4.7uH
C48
J33P
R58
10K
+2.65V
R66
39
C57
C3P
R67
39
C55
D10P
A201
1
DA1
C58
C2P
C54
C6P
A202
1
C56
D10P
TP187
TP188
X1
10.368MHz
TP82
TP1
L3
33nH
C69
C2P
C72
C2P
R78
180
R79
180
ANT
C66
C2P C67
K4.7
C73
D10P
D5
C78
D10P
0
C80
R86
0
R88
0
R87
0
C86
0
S1
3
4
2
1
C76
C6P
C27
K0.1
D10P
C50
C82
NC
C70
NC
C71
NC
C79
NC
C83
NC
C84
NC
C85
NC
C87
NC
NC
C9
C51
NC
C81
NC
C10
NC
C17
NC
C8
NC
NC
D6
NC
R13
NC
R17
R35
NC
NC
R15
NC
R14
NC
R11
R36
NC
R55
NC
R56
NC
Q5
NC
Q4
NC
C93
NC
L4
2.7nH
C88
NC
10
R24
680
R27
10K
R26
Q7
R33
NC
R52
0
C97
D10P
C98
C0.5P
C94
C0.5P
C68
NC
C53
D10P
(13)
(12)
(11)
(10)
(6)
(5)
(4)
(3)
(2)
(1)
(9)
(8)
(7)
GND
KX-TCD460UAF/UAS/UAT SCHEMATIC DIAGRAM (BASE UNIT)
: No Components
0V DC ON-HOOK
+9.8V DC OFF-HOOK
+9.8V DC OFF-HOOK
0V DC ON-HOOK
+3.9V DC OFF-HOOK
+3.9V DC OFF-HOOK
RX-AF
TX-AF
+2.65V DC
TX-DATA
RX-DATA
10.368MHz
Frequency
Frequency
87
KX-TCD460UA / KX-A146UA-1 / KX-A146UA
39 SCHEMATIC DIAGRAM (HANDSET)
3.9V DC
2.65V DC
2.65V DC
C28 K0.1
Q3
TP5
C23
K0.1
Q2
C15
6.3V330
CN1
1
CHARGE+
2
CHARGE-
C29 K0.1
L4
10uH
C3
K0.1
VBACK
+4V
F1
C20
K0.1
IC2
1
A0
2
A1
3
A2
4
GND
5
SDA
6
SCL
7
WP
8
VCC
C22
K0.1
R2
0.3
R21
0.1
C33
K2.2
L2
47uH
TP7
TP3
CN3
1
BATTERY+
2
BATTERY-
TP12
C2
K4.7
C21
K0.1
R6
3.3K
R4
10K
TP8
C18 K0.1
R19 15K
C27
K0.1
IC1
1
P
L.29
2
P
L.30
3
VDD
4
VSS
5
P
L.31
6
P
L.32
7
P
L.33
8
P
L.34
9
P
L.35
10
DRON
11
RXDSG
12
RXDA
13
SYEN
14
SYDA
15
SYCL
16
TXDA
17
PY.0
18
PY.1
19
PY.2
20
PY.3
21
PY.4
22
PAON
23
SYRI
24
VDD
25
VSS
26
ONSW
27
CDT
28
DCDCDRV
29
DCDCCMR
30
RESETQ
31
VSSO
32
LOAD
33
XTAL
34
VDDPM
35
VDDLO
36
VDDBAT
37
VDDLR
38
CHARGE_START(P0.2)
39
VDDA
40
VSSA
41
HON
42
HOP
43
BREF
44
MICS
45
MICP
46
MICN
47
ADREF
48
ADRSSI
49
P0.4(ADBAT)
50
P0.5(AD4N)
51
51:P0.6(AD4P)
52
P0.3
53
PX.0
54
PX.1
55
PX.2
56
PL.0
57
PL.1
58
PL.2
59
PX.3
60
PX.4
61
PL.3
62
PL.4
63
VDD
64
VSS
65
SUPEEP
66
I2DAT
67
ISCLK
68
MODE
69
R2
70
R1
71
VBACK/P0.7
72
PL.5
73
PL.6
74
PL.7
75
PL.8
76
PL.9
77
VDDLI
78
PL.10
79
PL.11
80
PL.12
81 PL.13
82 PL.14
83 PL.15
84 PL.16
85 VSS
86 VDD
87 PL.17
88 P0.0
89 P0.1
90 PL.18
91 PL.19
92 PL.20
93 PL.21
94 PL.22
95 PL.23
96 PL.24
97 PL.25
98 PL.26
99 PL.27
82 PL.14
83 PL.15
84 PL.16
85 VSS
86 VDD
87 PL.17
88 P0.0
89 P0.1
90 PL.18
91 PL.19
92 PL.20
93 PL.21
94 PL.22
95 PL.23
96 PL.24
97 PL.25
98 PL.26
99 PL.27
100PL.28
D1
CN2
1
C5
2
C4
3
C3
4
C2
5
C1
6
C0
7
S29
8
S28
9
S27
10
S26
11
S25
12
S24
13
S23
14
S22
15
S21
16
S20
17
S19
18
S18
19
S17
20
S16
21
S15
22
S14
23
S13
24
S12
25
S11
26
S10
27
S9
28
S8
29
S7
30
S6
31
S5
32
S4
33
S3
34
S2
35
S1
36
S0
R3
56
Q1
G
S
D
TP4
TP10
C30 K0.1
TP4V
X1
10.368MHz
C17
J18P
C14
6.3V330
L5
10uH
TP6
C16
C1P
Q102
Green
LED101
Q101
R101
82
Green
LED102
R102
82
Green
LED103
R103
82
Green
LED106
Green
LED105
Green
LED107
68
R104
Green
LED104
390
R105
Q103
Red
LED108
+4V
S14
S9
S19
S17
S8
S24
S21
S20
S7
S11
S25
S12
S18
S3
S22
S4
S6
S15
S13
S23
S2
S5
S16
S1
TP18
TP19
TP20
TP21
R11
0
C25
NC
C34
NC
C35
NC
D5
NC
D2
NC
R12
NC
R16
NC
REG
PL.14
PL.19
PL.23
PL.15
PL.18
PL.21
PL.16
PX.3
PX.1
PL.22
PL.15
PL.17
PL.34
PL.27
PL.28
PL.29
PL.0
PL.29
PL.31
PL.21
PL.19
PL.10
PL.1
PL.2
PL.30
PY.2
PL.3
PY.1
PL.4
PL.28
PL.16
PL.5
PX.0
PX.1
PL.18
PX.2
PL.13
PL.32
PL.20
PL.22
PL.27
PL.0
PX.4
PY.4
PL.4
PL.7
PL.1
PL.8
PL.26
PY.3
PL.2
PL.9
PL.32
PL.11
PL.3
PL.6
PL.25
PL.7
PL.23
PY.0
PL.17
PL.8
PL.12
PL.24
PL.5
PL.9
PL.10
PL.31
PL.14
PL.24
PX.4
PX.0
PL.11
PL.25
PL.33
PL.35
PL.33
PL.12
PL.26
PL.34
PL.30
PL.35
PL.13
PL.6
PL.20
PO.3
PO.3
PY.4
PY.1
PY.0
PY.3
PX.3
PY.2
PX.2
'GND'
'SCL'
'SDA'
'BATT'
LCD BACKLIGHT
KEY BACKLIGHT
Õ8Õ
Õ
->Õ
Õ5Õ
ÕRÕ
Õ0Õ
Õ6Õ
ÕREDIALÕ
Õ7Õ
ÕTEL BOOKÕ
Õ1Õ
Õ4Õ
Õ2Õ
Õ9Õ
ÕUPÕ
ÕINTÕ
ÕCancelÕ
ÕRIGHTÕ
ÕLEFTÕ
Õ3Õ
Õ#Õ
ÕTALKÕ
ÕSPÕ
Õ*Õ
ÕDOWNÕ
(1)
(14)
(10)
(11)
(12)
(13)
(13)
(4)
(3)
(2)
(15)
(16)
(17)
(18)
(18)
(22)
(23)
(19)
~
~
88
KX-TCD460UA / KX-A146UA-1 / KX-A146UA
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