Panasonic KX-TDA6381X / KX-TDA6381SX Service Manual ▷ View online
37
KX-TDA6381X/KX-TDA6381SX
7.2.2.
Sub Board
C1CB00001432
C0JBAB000504
C0ABBB000179
MA143
49
64
1
16
17
32
33
48
1
4
8
5
Anode
Cathode
Anode
B0EDKT000007
PQVDRLZ2R0B
PQVDPTZT2524
+
Cathode
Anode
DSC7003S0L
38
KX-TDA6381X/KX-TDA6381SX
8 Schematic Diagram
8.1.
Main Board
8.1.1.
No.1
DT_OE[15]
DT_OE[11]
DT_OE[13]
DT_OE[12]
DT_OE[11]
DT_OE[14]
DT_OE[12]
DT_OE[8]
DT_OE[13]
DT_OE[9]
DT_OE[5]
DT_OE[9]
DT_OE[3]
DT_OE[15]
DT_OE[0]
DT_OE[1]
DT_OE[2]
DT_OE[1]
DT_OE[2]
DT_OE[8-15]
DT_OE[7]
DT_OE[6]
DT_OE[4]
DT_OE[8]
DT_OE[14]
DT_OE[10]
DT_OE[10]
DT_OE[0-7]
DT_OE[13]
DT_OE[14]
DT_OE[15]
A[0-12]
LA[0-5]
DT_OE[2]
DT_OE[3]
DT_OE[4]
DT_OE[5]
DT_OE[6]
DT_OE[7]
DT_OE[3]
DT_OE[4]
DT_OE[5]
DT_OE[6]
DT_OE[7]
DT_OE[9]
R[14]
R[15]
R[8]
R[10]
R[9]
R[11]
R[13]
R[12]
T[8]
DT_OE[8]
LA[1]
LA[2]
LA[5]
D[0]
D[1]
D[2]
D[3]
D[4]
D[5]
D[6]
D[7]
LA[4]
LA[0]
LA[3]
DT_OE[12]
T[9]
T[10]
T[11]
T[12]
T[13]
T[14]
T[15]
DT_OE[10]
DT_OE[11]
LA[0]
LA[3]
LA[4]
LA[2]
LA[1]
LA[1]
LA[5]
LA[0]
LA[1]
LA[2]
LA[3]
LA[4]
LA[5]
A[4]
A[1]
A[0-12]
A[2]
A[3]
A[5]
A[0]
A[5]
A[4]
A[3]
A[2]
A[1]
A[0]
A[4]
A[3]
A[2]
A[1]
A[0]
DT_OE[0]
DT_OE[1]
DT_OE[1]
C817
25V/220u
DIN
0 0 2 : 7 B ; 0 0 2 : 1 B ; 0 0 1 : 6 B
2 5
2 7
DOUT
0 0 2 : 7 B ; 0 0 2 : 1 B ; 0 0 1 : 6 B
D G
1 5
OPT[1]
C75
0.1u
4 9
CN2
9
C806
0.1u
L803
0
C919 50V/0.01u
4
J1L
0
C60
0.1u
4 1
+3.3V
C66
0.01
4 0
6 0
RA51
NC
1
2
3
4
2
3
4
5
6
7
8
C925 50V/0.01u
3 6
4 3
C819
25V/220u
NC
C71
0.1u
D G
R812
2.2K
7
L811
CN8
5
1 3
OPT[1]
4 1
RA9
10K
1
2
3
4
2
3
4
5
6
7
8
C818
NC
4 6
TH1O
C78
0.1u
D803 5.1V
1 6
CN2
1 5
TH1P
D808
R125
NC
R32
10K
2
5 7
D G
C929
50V/0.01u
RA50
NC
1
2
3
4
2
3
4
5
6
7
8
C921 50V/0.01u
L804
0
C927 50V/0.01u
5 6
1 2
6
1 0
12.288M
R4
150
C923 50V/0.01u
J1O
0
TH1N
C7
NC
OPT[1]
R811
47K
5 8
FH
0 0 2 : 7 B ; 0 0 2 : 1 B ; 0 0 1 : 4 G
C6
NC
CLK
0 0 2 : 7 B ; 0 0 2 : 1 B ; 0 0 1 : 4 G
2
2 1
RA1
10K
1
2
3
4
5
6
7
8
6
7
8
TH1K
C805
0.1u
C1
NC
3
4 7
D G
4 5
2 0
R813
10K
J1K
0
8
J1I
0
RA15
10K
1
2
3
4
5
6
7
8
6
7
8
9
1 0
R3
150
1 6
1 8
C930
50V/0.01u
J1N
0
5 0
3
D G
R817
1K
3 5
LA[0-5]
2 3
+3.3V
R827
22K
3 8
3 7
RA49
0
1
2
3
4
5
6
7
8
6
7
8
3 9
+3.3V
TH1L
L810
C72
0.1u
1 7
4 8
RA48
0
1
2
3
4
5
6
7
8
6
7
8
R121
NC
+3.3V
R822
22K
CN2
1 1
RA6
10K
1
2
3
4
5
6
7
8
6
7
8
C810
220u
+3.3V
D G
DG
CN6
1
C59
0.1u
RA10
10K
1
2
3
4
5
6
7
8
6
7
8
D G
C8
NC
+5V
SFG
RA5
10K
1
2
3
4
5
6
7
8
6
7
8
TH1I
+2.5V
A[0-12]
R815
47K
+ 5 V
8
5 9
R124
NC
5
3 2
9
C73
0.1u
+3.3V
R126
10K
R816
33K
DCLK
0 0 2 : 7 B ; 0 0 2 : 1 B ; 0 0 1 : 6 B
R120
NC
3 4
RA12
10K
1
2
3
4
3
4
5
6
7
8
+15V
C58
0.1u
4
1 9
3 5
1 4
1 5
TH1J
D G
C918 50V/0.01u
J1P
0
S F G
C23
0.1u
3 3
L1
NC
CN2
1 2
3 8
3 9
IC20 NC
1
CLR
2
1Q
3
1D
4
2D
5
2Q
6
3Q
7
3D
8
4D
9
4Q
10 GND
11
CLK
12 5Q
13
5D
14
6D
15 6Q
16 7Q
17
7D
18
8D
19 8Q
20 VCC
4 0
C_CS[3]
0 0 1 : 5 B
C74
0.1u
C79
0.1u
D G
1
C807
0.1u
RA2
10K
1
2
3
4
5
6
7
8
6
7
8
CN2
1 6
J1J
0
C821
NC
1 9
C808
0.1u
R122
NC
2 0
5 4
TH1M
C922 50V/0.01u
C76
0.1u
3 4
C77
0.1u
4 2
1 3
3 1
R814
10K
R123
NC
C90
10V/10u
2 4
UHW
0 0 2 : 7 B ; 0 0 2 : 1 B ; 0 0 1 : 3 G
2 2
1 2
CN2
1 3
+ 2 . 5 V
DHW
0 0 2 : 7 B ; 0 0 2 : 1 B ; 0 0 1 : 4 G
C926 50V/0.01u
C928
50V/0.01u
D807
+ 3 . 3 V
2 6
3 6
1 1
C_CS[2]
0 0 1 : 5 B
C809
330u
16V
4 4
D G
1 8
3 7
5 3
Q15
1
S1
2
S2
3
S3
4
G
5
D1
6
D2
7
D3
8
D4
3 0
6
5 2
D G
D G
U1
1
2
3
4
5
C820
NC
J7
0
5 1
1 1
C931
50V/0.01u
1 7
J1M
0
5 5
2 8
+3.3V
Q3
E
C
B
2 9
1 4
J8
0
IC803
NC
1
VSS
2
VIN
3
VOUT
7
J4
0
C61
0.1u
CN2
1 0
+3.3V
J1
NC
J5
0
C920 50V/0.01u
J6
0
+3.3V
J2
NC
+3.3V
C91
10V/10u
+3.3V
+3.3V
PG
P.G
P.G
RA13
10K
1
2
3
4
5
6
7
8
6
7
8
CN2
1 4
+3.3V
P.G
PG
P.G
P.G
D804 7.5V
PG
P.G
+5V
PG
P.G
nRST
0 0 2 : 7 B ; 0 0 2 : 1 B ; 0 0 1 : 6 G ; 0 0 3 : 6 C ; 0 0 3 : 1 1 C ; 0 0 4 : 1 0 C
nCS_CID[1]
0 0 1 : 4 F
nWR
0 0 1 : 4 G ; 0 0 3 : 6 C ; 0 0 3 : 1 1 C ; 0 0 4 : 1 0 B
CLK
0 0 3 : 4 E ; 0 0 3 : 1 0 E
J3
0
+15VIN
nRD
0 0 1 : 4 G ; 0 0 3 : 6 C ; 0 0 3 : 1 1 C ; 0 0 4 : 1 0 B
D[0-7]
+2.5V
R127
10K
DT_OE[0-7]
LED1
1
2
3
4
Q16
4
3
5
Q16
1
6
2
D806
DA801
1
2
3
J801
NC
C815
0.1u
C816
0.1u
Q801
S
D
G
R819
56k
R801
56
D801
L801
22uH
C812
2700p
C811
16V/1uF
R821
27K F
R820
62K
F
IC801
1
CE
2
GND
3
VFB
4
EXT
5
VIN
R803
10
R804
NC
Q802
S
D
G
R824
56k
R802
56
D802
IC802
1
CE
2
GND
3
VFB
4
EXT
5
VIN
R805
10
R806
NC
C814
2700p
C813
16V/1uF
L802
22uH
R33 NC
R30
NC
R31 10K
+3.3V
R825
75K
F
R826
18.7K F
RED
GREEN
PG
PG
PG
D
F
E
C
B
A
H
G
4
6
5
3
2
1
D[0-7]
(51)
(50)
(49)
(48)
(47)
(46)
(45)
(44)
(43)
(42)
(41)
(40)
(39)
(38)
(37)
(36)
(35)
(34)
(33)
(32)
(31)
(30)
(29)
(28)
(27)
(26)
(25)
(24)
(23)
(22)
(21)
(20)
(19)
(18)
(17)
(16)
(15)
(14)
(13)
(12)
(11)
(10)
(9)
(8)
(7)
(6)
(5)
(4)
(3)
(2)
(1)
4/4
3/4
2/4
1/2
1
-1
KX-TDA6381 MAIN BOARD No.1 (1/2)
1
2
39
KX-TDA6381X/KX-TDA6381SX
PCB
SCREW
SCREW
CT_D[5]
EC_AD[6]
EC_AD[5]
EC_AD[8]
CT_FRAME_A
EC_INT
CT_D[0]
CT_D[1]
EC_AD[1]
CT_D[2]
EC_AD[12]
EC_BE[0]
CT_C8_A
EC_AD[3]
EC_AD[14]
EC_STOP
CT_C8
CT_FRAME
EC_INT_A
EC_AD[10]
EC_AD[3]
EC_AD[4]
EC_AD[1]
EC_CLK
EC_BE[1]
EC_AD[10]
CT_D[3]
EC_AD[0]
CT_D[1]
EC_AD[14]
CT_D[6]
CT_D[7]
CT_D[7]
EC_DET
CT_D[4]
EC_nRST
CT_D[3]
CT_D[6]
EC_DET_A
EC_AD[15]
CT_D[0]
EC_AD[2]
CT_D[7]
EC_PERR
EC_AD[12]
EC_PAR
EC_TRDY
EC_AD[13]
EC_FRAME
EC_AD[5]
EC_
A
D[0-15]
EC_AD[11]
EC_AD[4]
EC_AD[7]
EC_AD[15]
EC_AD[6]
CT_D[2]
CT_D[5]
EC_AD[9]
EC_AD[2]
EC_AD[13]
EC_AD[7]
CT_D[4]
EC_AD[11]
EC_AD[0]
EC_AD[9]
EC_FRAME_A
EC_FRAME_A
CT_D[0-
7
]
EC_AD[8]
EC_IDSEL
D[0]
A
[0]
A
[2
]
A
[3]
A
[4]
D[1]
D[
2
]
D[3]
D[4]
D[5]
D[
6
]
D[
7
]
A
[1]
nRST
FH
EC_CLK_A
EC_STOP_A
EC_STOP_A
EC_TRDY_A
EC_TRDY_A
EC_PERR_A
EC_PERR_A
EC_PAR_A
EC_PAR_A
EC_BE_A[0]
EC_BE_A[0]
EC_BE_A[1]
EC_BE_A[1]
EC_BE_A[1]
EC_IDSEL_A
EC_IDSEL_A
EC_nRST_A
A
[5]
A
[6
]
A
[7
]
A
[8]
A
[9]
A
[10]
A
[11]
A
[1
2
]
nC
S2
nBREQ
nBACK
nWAIT
nC
S
1
nPOW_R
S
T
D G
TH1
NC
R
A2
3
4
7
1
2
3
4
5
6
7
8
6
7
8
C801
0.01u
R1
76
22
0
L
A2
22
0
1
2
3
4
5
6
7
8
6
7
8
DHW
00
2
:7
B;00
2
:1B;001:9E
+3.3V
DCLK
00
2:
7B;00
2:1B;001:9E
C907
50V/0.01u
R11
7
NC
DG
C57
16V/0.01u
C905
50V/0.01u
CLK
00
2
:7
B;00
2
:1B;001:9E
UHW
D G
C916
50V/0.01u
D G
A G
1 6 . 3 8 4 M
RA45
220
1
2
3
4
5
6
7
8
nBRE
Q
nHALT
R88
1K
A G
R14
1MEG
R4
2
89
10K
R
A22 47
1
2
3
4
5
6
7
8
6
7
8
+ 1 5 V
J10
NC
D G
L
A6
22
0
1
2
3
4
5
6
7
8
6
7
8
RA20
10K
1
2
3
4
5
6
7
8
PNLB2255ZA-LV
R
A26 47
1
2
3
4
5
6
7
8
6
7
8
+3.3V
R89
22
R8
7
22
K
+3.3V
C56
0.01u
+3.3V
R162
1K
+3.3V
nC
S
_CID[1]
001:10G
C910
50V/0.01u
+3.3V
D G
J306
NC
C17
0.01u
J16
0
R5
62
2
0
J102
R38
1K
nW
A
IT
C11
18p
R
A
3
NC
1
2
3
4
5
6
7
8
6
7
8
C21
0.01u
R
A2
1
4
7
1
2
3
4
5
6
7
8
6
7
8
nPOW_RST
+3.3V
C88
0.01u
D G
+3.3V
J300
0
C904
50V/0.01u
+3.3V
RA32
100K
NC
1
2
3
4
5
6
7
8
PG
P.G
C908
50V/0.01u
R
A2
8
4
7
1
2
3
4
5
6
7
8
6
7
8
DOUT
00
2:
7B;00
2:1B;001:9E
R75
47
+3.3V
Q4
E
C
B
D G
+3.3V
+3.3V
R
A2
9
4
7
1
2
3
4
5
6
7
8
6
7
8
XSB301
PNXSB3+6VW
C_C
S
[2
]
001:9E
FH
00
2
:7
B;00
2
:1B;001:9E
R90
22
A G
R1
7
4
22
0
D G
R4
2
88
10K
R103
10K
J32 NC
R9
7
1K
RA42
220
1
2
3
4
5
6
7
8
C5
2
1
6V
/0.01u
DIN
00
2:
7B;00
2:1B;001:9E
C917
50V/0.01u
+3.3V
RA46
220
1
2
3
4
5
6
7
8
C_C
S
[0]
00
2
:7
B
nRST
0 0 2 : 7 B ; 0 0 2 : 1 B ; 0 0 1 : 1 0 G ; 0 0 3 : 6 C ; 0 0 3 : 1 1 C ; 0 0 4 : 1 0 C
C914
50V/0.01u
A G
+3.3V
PG
P.G
RA31
100K
NC
1
2
3
4
5
6
7
8
D G
D G
R40
220
C87
0.01u
DG1
+3.3V
R5
72
2
0
C915
50V/0.01u
L
A
4
22
0
1
2
3
4
5
6
7
8
6
7
8
P G
R76
47
nB
A
CK
+3.3V
+15V
IC5
3
5
RA18
100
1
2
3
4
5
6
7
8
DG3
CN1
A1
+15VPTA1
B1
+15VPTB1
A2
+40V
B2
+15V
A3
POWER_GNDA3
B3
POWER_GNDB3
A4
EC_CLK
B4
EC_nSTOP
A5
GNDA5
B5
GNDB5
A6
EC_nTRDY
B6
EC_nPERR
A7
EC_nFRAM
B7
EC_PAR
A8
EC_nCBE[0]
B8
EC_nCBE[1]
A9
EC_IDSEL
B9
EC_nRST
A10
GNDA10
B10
GNDB10
A11
EC_AD[0]
B11
EC_AD[1]
A12
EC_AD[2]
B12
EC_AD[3]
A13
EC_AD[4]
B13
EC_AD[5]
A14
GNDA14
B14
GNDB14
A15
EC_AD[6]
B15
EC_AD[7]
A16
EC_AD[8]
B16
EC_AD[9]
A17
EC_AD[10]
B17
EC_AD[11]
A18
GNDA18
B18
ReservedB18
A19
EC_AD[12]
EC_AD[13]
B19
A20
EC_AD[14]
B20
EC_AD[15]
A21
EC_nINT
B21
EC_nCDET
A22
GNDA22
B22
ReservedB22
A23
CT_D[0]
B23
CT_D[1]
A24
CT_D[2]
B24
CT_D[3]
A25
CT_D[4]
B25
CT_D[5]
A26
CT_D[6]
B26
CT_D[7]
A27
GNDA27
B27
ReservedB27
A28
CT_NETRE
B28
CT_C8
A29
CT_FRAME
B29
nLOS
A30
GNDA30
B30
GNDB30
A31
ReservedA31
B31
ReservedB31
A32
ReservedA32
B32
ReservedB32
A33
ReservedA33
B33
ReservedB33
A34
TXD2
B34
RXD2
A35
ReservedA35
B35
ReservedB35
A36
ReservedA36
B36
ReservedB36
A37
ReservedA37
B37
ReservedB37
A38
+30VA38
B38
+30VB38
A39
RINGER
B39
RING_SYNC
A40
nHALT
B40
RING_SIN
A41
GNDA41
B41
(+3.3V)
A42
(DC_ALM)
B42
(AC_ALM)
A43
(nEXTPOW[0])
B43
(nEXTPOW[1])
A44
DIAG_R
B44
DIAG_T
A45
GNDA45
B45
RINGER_AC
F1
1.5A
C69
0.1u
C906
50V/0.01u
C18
0.1u
C86
0.01u
C912
50V/0.01u
C85
0.01u
R
A
1
6
10K
1
2
3
4
5
6
7
8
6
7
8
D G
C84
0.01u
R9
6
1K
R39 10K
RA19
10K
1
2
3
4
5
6
7
8
nIR
Q
1
004:10B
D G
L
A
3
22
0
1
2
3
4
5
6
7
8
6
7
8
C913
50V/0.01u
D G
D G
nC
S
_CID[0]
003:1
2
B
nC
S
1
C_C
S
[1]
00
2
:1B
+5V
nWR
R
A2
4
4
7
1
2
3
4
5
6
7
8
6
7
8
nC
S2
C10
0.1u
J305
NC
R810
1.5
6432
nRD
+3.3V
+3.3V
+15VIN
+3.3V
L103
NC
R
A2
5
4
7
1
2
3
4
5
6
7
8
6
7
8
G N D - 2
D G
D G
R94
NC
L34
22
0
IC5
6
2
L101
22
0
IC5
1
7
C80
0.01u
J11
NC
R82
22
C55
0.01u
R93
NC
R111
100
J101
C
7
0
0.1u
C
2
0
1u
C16
1u
C82
0.01u
R11
2
100
DG2
C54
0.01u
J13
0
C81
0.01u
XSB302
PNXSB3+6VW
+3.3V
L
A
5
22
0
1
2
3
4
5
6
7
8
6
7
8
+3.3V
C_C
S
[3]
001:9E
J14
0
C53
0.01u
J12
NC
IC5
8
4
X1
16.384M
C83
0.01u
J103
J15
0
+3.3V
+3.3V
D G
J301
0
D G
C14
18p
C911
50V/0.01u
C909
50V/0.01u
L
A
1
22
0
1
2
3
4
5
6
7
8
6
7
8
IC4
1
GND
2
VDD
3
CD
4
OUT
D G
+5V
R95
1K
C19
0.01u
J18
NC
J9
0
J17
0
J20
NC
J19
NC
J25
0
J2
3
0
J2
4
0
J2
1
0
J22
0
J26
NC
J27
NC
J28
0
J31
0
J2
9
0
J
30
NC
IC3
190 RX[7]
180
AV
DD180
3
PLLGND3
4
PLL
V
DD
5
PLLGND5
7
IR
Q
[1]
8
IR
Q
[0]
9
C
S
[1]
10
C
S
[0]
11
GND11
13
LD[
6
]
14
LD[5]
15
LD[4]
1
6
LD[3]
1
7
LD[
2
]
18
LD[1]
19
LD[0]
2
0
V
DD
2
0
2
1
GND
2
1
22
A
LE
2
3
C
S
_DM
A
2
4
C
S
_
SA
M
2
5
C
S
I
26
RD
27
WR
2
8
L_NR
S
T
2
9
GND
2
9
30
W
A
IT
31
RE
S
ET
3
2
BRE
Q
33
B
A
CK
34
BG
A
K
35
GND35
3
6
V
DD3
6
3
7
S
BRE
Q
38
S
B
A
CK
39
L
A
[1
2
]
40
L
A
[11]
41
L
A
[10]
4
2
L
A
[9]
43
L
A
[8]
44
GND44
45
L
A
[7
]
4
6
L
A
[6
]
4
7
L
A
[5]
48
L
A
[4]
49
L
A
[3]
50
L
A
[2
]
51
L
A
[1]
5
2
L
A
[0]
53
V
DD53
58
GND58
6
3
V
DD
6
3
6
4
GND
6
4
6
9
GND
6
9
76
GND
76
77
V
DD
77
8
2
GND8
2
8
7
V
DD8
7
88
GND88
93
GND93
98
GND98
104
GND104
10
6
V
DD10
6
107
P3[7]
108
W[TEST]
109
T[TEST]
110
P4[0]
111
P4[1]
11
2
GND11
2
119
GND119
1
2
0
V
DD1
2
0
1
2
1
LUHW[0]
1
22
LDHW[0]
1
2
3
HW_CLK[0]
1
2
4
HW_CLK[1]
1
2
5
HW_FH
1
26
L_NETREF
1
27
LDHW[1]
1
2
8
LUHW[1]
1
2
9
S
HW_CLK
130
S
HW_FH
131
GND131
13
2
V
DD13
2
141
GND141
150
GND150
151 P1[0]
152 P1[1]
153 P1[2]
154 P1[3]
155 P1[4]
156 P1[5]
157 P1[6]
158 P1[7]
159
V
DD159
1
6
0
GND1
6
0
161 P2[0]
162 P2[1]
163 P2[2]
164 P2[3]
165 P2[4]
166 P2[5]
167 P2[6]
168 P2[7]
1
7
9
GND1
7
9
170 P3[0]
171 P3[1]
172 P3[2]
173 P3[3]
174 P3[4]
175 P3[5]
176 P3[6]
177 GND177
1
7
8
V
DD1
7
8
1
PLLCLK
192 GND192
193 VDD193
194 P4[2]
195 P4[3]
196 P4[4]
197 P4[5]
198 P4[6]
199 P4[7]
169
TEST0
201 P5[0]
202 P5[1]
203 P5[2]
204 P5[3]
205 P5[4]
206 P5[5]
207 P5[6]
208 P5[7]
202 P5[1]
203 P5[2]
204 P5[3]
205 P5[4]
206 P5[5]
207 P5[6]
208 P5[7]
200
GND200
2
V
DD
2
181
VREFPLUS
182
VREFMINUS
191
AV
DD191
183
RX[0]
184 RX[1]
185 RX[2]
186 RX[3]
187 RX[4]
188 RX[5]
189 RX[6]
6
V
DD
6
133
C_C
S
[3]
134
C_C
S
[2
]
135
C_C
S
[1]
13
6
C_C
S
[0]
13
7
DCLK
138
DOUT
139
DIN
140
CP[0]
54
RINGER
55
CT_FRAME_A
56
CT_C8_A
57
CT_NETREF
59
CT_D[7]
60
CT_D[6]
61
CT_D[5]
62
CT_D[4]
65
CT_D[3]
66
CT_D[2]
67
CT_D[1]
68
CT_D[0]
70
EC_DET
71
EC_INT
72
EC_AD[15]
73
EC_AD[14]
74
EC_AD[13]
75
EC_AD[12]
78
EC_AD[11]
79
EC_AD[10]
80
EC_AD[9]
81
EC_AD[8]
83
EC_AD[7]
84
EC_AD[6]
85
EC_AD[5]
86
EC_AD[4]
89
EC_AD[3]
90
EC_AD[2]
91
EC_AD[1]
92
EC_AD[0]
94
EC_NRST
95
EC_IDSEL
96
EC_BE[1]
97
EC_BE[0]
99
EC_PAR
100
EC_FRAME
101
EC_PERR
102
EC_TRDY
103
EC_STOP
105
EC_CLK
113
MODE[5]
114
MODE[4]
115
MODE[3]
116
MODE[2]
117
MODE[1]
118
MODE[0]
142
143
144
145
146
147
148
149
143
144
145
146
147
148
149
1
2
LD[
7
]
tacker2 esamson2
J9 0 NC
J17 0 NC
J18 NC 0
J19 NC 0
J20 NC 0
J21 0 NC
J22 0 NC
J23 0 NC
J24 0 NC
J25 0 NC
J26 NC 0
J27 NC 0
J28 0 NC
J29 0 NC
J30 NC 0
J31 0 NC
RA3 NC 10K
J17 0 NC
J18 NC 0
J19 NC 0
J20 NC 0
J21 0 NC
J22 0 NC
J23 0 NC
J24 0 NC
J25 0 NC
J26 NC 0
J27 NC 0
J28 0 NC
J29 0 NC
J30 NC 0
J31 0 NC
RA3 NC 10K
P0[0]
P0[1]
P0[2]
P0[3]
P0[4]
P0[5]
P0[6]
P0[7]
P0[1]
P0[2]
P0[3]
P0[4]
P0[5]
P0[6]
P0[7]
2/2
D
F
E
C
B
A
H
G
7
8
11
12
10
9
(51)
(50)
(49)
(48)
(47)
(46)
(45)
(44)
(43)
(42)
(41)
(40)
(39)
(38)
(37)
(36)
(35)
(34)
(33)
(32)
(31)
(30)
(29)
(28)
(27)
(26)
(25)
(24)
(23)
(22)
(21)
(20)
(19)
(18)
(17)
(16)
(15)
(14)
(13)
(12)
(11)
(10)
(9)
(8)
(7)
(6)
(5)
(4)
(3)
(2)
(1)
4/4
3/4
2/2
1
-2
KX-TDA6381 MAIN BOARD No.1 (2/2)
3
4
8
6
7
5
40
KX-TDA6381X/KX-TDA6381SX
8.1.2.
No.2
D
F
E
C
B
A
H
G
4
6
5
3
2
1
(1)
A
B
C
D
VIN[0]
REVDET[3]
CPCDET[3]
BELLI[1]
BELLI[3]
SHNT[1]
REVDET[3]
SHNT[0]
DIAL[1]
S H N T [ 2 ]
DIAL[3]
DIAL[1]
REVDET[2]
CPCDET[0]
DIAL[0]
SHNT[3]
REVDET[0]
CPCDET[3]
DIAL[0]
BELLI[1]
R E V D E T [ 2 ]
VOUT[0]
CPCDET[1]
VOUT[1]
B E L L I [ 2 ]
CPCDET[2]
DIN
REVDET[1]
FH
BELLI[0]
VIN[3]
DIAL[3]
SHNT[0]
DHW
SHNT[2]
REVDET[1]
VOUT[3]
D I A L [ 2 ]
BELLI[2]
DCLK
DOUT
C_CS[0]
BELLI[3]
VOUT[2]
C P C D E T [ 2 ]
CLK
REVDET[0]
BELLI[0]
SHNT[1]
CPCDET[1]
VIN[1]
SHNT[3]
CPCDET[0]
VIN[2]
DIAL[2]
VH3
R16A
4.7K
C16D
50V/22p
+5V
T[0]
0 0 3 : 7 A
R15B
39
DA1D
1
2
3
C
27
0.1u
R32C
510 F
DHW
RL
2
D
4
3
2
1
R
2
0D
6
80
C2B
16V/0.47u
R21C
100K F
PC5A
1
2
3
4
IC1C
1
2
3
4
8
+5V
J4A
NC
D1A
C16B
50V/22p
+5V
RL3B
4
3
2
1
+15V
C2C
16V/0.47u
Q5C
NC
E
C
B
D1D
PC1B
1
2
3
4
C1D
220p
CN3
3
R
2
0B
6
80
R1
7A
10K
R23B 150K F
2 6
C
62
0.1u
A G
R30C
510 F
C1
A
22
0p
R11
A
5
6
0
+5V
R21A
100K F
D G
R
2
11
0
0
+5V
C9B
50V/22p
C11A
16V/0.1u
R1
7
C
10K
R27A
56K F
J4B
NC
R11D
5
6
0
D G
R3B
NC
R23C 150K F
L1B
1
2
3
4
C2D
16V/0.47u
+5V
R3C
NC
R34D
100K F
C4D
16V/0.47u
R18
A
100
R
2
01
0
0
R27B
56K F
C30
0.1u
R32D
510 F
510 F
J7
C
0
D G
+5V
R21D
100K F
R35A
91K F
D5
A2
5
V
RL3A
4
3
2
1
T1D
2
1
3
4
Q4A
E
C
B
+5V
F G
D2C
IC6
5
SB3_0
6
SO3_1
7
S03_0
50
GNDA1
15
INT34
61
VDDA34
34
INT12
30
DRB
32
PCLK
31
FSC
20
DOUT
19
DIN
29
DXB
23
RESET
22
MCLK
17
CS
18
DCLK
4
SB3_1
1
SI3_1
2
SI3_0
3
SB3_2
24
VDDD
52
VDDA12
54
GNDA2
9 SO4_1
8
S04_0
10 SB4_0
11 SB4_1
14 SI4_1
13 SI4_0
12 SB4_2
39 SB1_0
38 SB1_1
35 SI1_1
36 SI1_0
37 SB1_2
44 SB2_0
45 SB2_1
48 SI2_1
47 SI2_0
46 SB2_2
57
VDDREF
40
SO1_1
41
S01_0
56
VREF
43 SO2_1
42 S02_0
59
GNDA3
63
GNDA4
21
GNDD
33
CHCLK1
16
CHCLK2
28
TCB
27
DRA
26
DXA
25
TCA
51
Vout1
49 Vin1
53 Vout2
55 Vin2
60
Vout3
58
Vin3
62 Vout4
64 Vin4
PC4C
1
2
3
4
R
2A
22
C7D
50V/10u
R24C
91K F
R27C
56K F
VH3
+15V
R23D 150K F
D G
A G
PC1A
1
2
3
4
R1
A
6
8K
D G
SA
1B
1
2
3
C7A
50V/10u
R
6A
6
8K
DA1C
1
2
3
C11B
16V/0.1u
C_CS[0]
D G
+5V
+5V
C16C
50V/22p
R[1]
0 0 3 : 7 B
DOUT
PC4D
1
2
3
4
+5V
D4C
2V
C
6A
50
V
/10u
D G
C
6
B
50
V
/10u
R27D
56K F
R19B
8.
2
K
CN3
2
ZNR1B
NC
C
2
9
0.1u
R4C
1.2K
D4B
2V
VH4
RL3C
4
3
2
1
L1C
1
2
3
4
R35D
91K F
RL3D
4
3
2
1
+15V
C12D
16V/0.1u
C
2
4
0.1u
D G
R22A
510 F
D G
PC4
A
1
2
3
4
R11B
5
6
0
R1
7
B
10K
+5V
C10B
50V/22p
PC5D
1
2
3
4
2 9
nRST
J7A
0
D G
R34
A
100K F
+5V
CN2
1
L1D
1
2
3
4
SA
1D
1
2
3
C
2A
16V/0.47u
C
6
D
50
V
/10u
A G
ZNR1C
NC
J4C
NC
C
6
C
50
V
/10u
D G
D5B
2
5
V
VH4
IC1A
5
6
7
R[2]
0 0 3 : 7 B
R21B
100K F
SFG
R9
2
22
0K
A G
CN2
3
C12C
16V/0.1u
A G
R19D
8.
2
K
R16C
4.7K
C9C
50V/22p
D G
D G
A G
R[0]
0 0 3 : 7 A
+15V
+5V
C10D
50V/22p
F G 2
R34B
100K F
R16B
4.7K
J1B
0
C
2
8
0.1u
DT_STD[3]
TH1D
NC
D G
R14B
22
0
C8C
16V/10u
R18C
100
+15V
D5C
2
5
V
+5V
+5V
C31
1
6V
/1u
R
2
0C
6
80
R4B
1.2K
A G
D T _ S T D [ 2 ]
R32B
510 F
TH1B
NC
D G
FH
R19C
8.
2
K
C8B
16V/10u
R34C
100K F
R
2
B
22
C1B
220p
CN2
2
D G
SFG
DA1B
1
2
3
IC9
5
6
7
T1A
2
1
3
4
2 7
C7C
50V/10u
A G
IC1A
1
2
3
4
8
R[3]
0 0 3 : 7 C
DA1A
1
2
3
R1D
68K
+5V
A G
A G
Q4C
E
C
B
A G
PC2C
1
2
3
4
+5V
DT_STD[1]
A G
D5D
2
5
V
PC5C
1
2
3
4
R6B
68K
D2A
ZNR
2
B
NC
R143
22
0K
R18D
100
T1C
2
1
3
4
R30B
510 F
R24A
91K F
C16A
50V/22p
D G
Q5D
NC
E
C
B
C
26
0.
22
u
R22D
510 F
T[3]
0 0 3 : 7 C
CN4
3
J37
0
D2B
PC1D
1
2
3
4
IC1D
1
2
3
4
8
D4
A
2V
J4D
NC
C10A
50V/22p
R1C
68K
A G
T[1]
0 0 3 : 7 B
R6D
68K
R35C
91K F
+5V
CLK
C11C
16V/0.1u
C4
A
1
6V
/0.4
7
u
VH1
C4C
16V/0.47u
Q4B
E
C
B
A G
ZNR1
NC
R15D
39
R14
A
22
0
D G
R5C
22
K/1W
+5V
PC2B
1
2
3
4
VH2
C4B
16V/0.47u
R11C
5
6
0
C43
1u
IC1D
5
6
7
SFG
R19
A
8.
2
K
Q4D
E
C
B
R14
2
22
0K
+15V
C1C
220p
ZNR
2
D
NC
C
6
3
1u
+5V
IC1C
5
6
7
D4D
2V
CN4
1
VH1
DCLK
A G
R15A
39
+15V
R23A
150K F
PC5B
1
2
3
4
RL
2
C
4
3
2
1
C9
2
0.1u
CN2
4
IC1B
5
6
7
R3
A
NC
C7B
50V/10u
D G
+5V
T[2]
0 0 3 : 7 B
ZNR
2
C
NC
C10C
50V/22p
CN4
4
J7
B
0
R24D
91K F
R3D
NC
+5V
R91
22
0K
ZNR1
A
NC
J1A
0
D G
R
2
D
22
PC1C
1
2
3
4
D G
IC8
5
6
7
R35B
91K F
ZNR1D
NC
D1C
IC1B
1
2
3
4
8
DIN
D G
D G
R32A
510 F
Q5B
NC
E
C
B
+5V
SFG
R14D
22
0
J1C
0
IC8
1
2
3
4
8
+5V
R30D
510 F
CN4
2
C8D
16V/10u
SFG
C12A
16V/0.1u
D G
R16D
4.7K
PC2A
1
2
3
4
R
2
C
22
D G
ZNR
2A
NC
D1B
R5
A
22
K/1W
F G
J1D
0
C12B
16V/0.1u
R24B
91K F
IC9
1
2
3
4
8
+5V
C11D
16V/0.1u
D G
Q5A
NC
E
C
B
R18B
100
+5V
UHW
C9D
50V/22p
R6C
68K
+5V
+5V
RL
2A
NC
4
3
2
1
A G
R1B
68K
R5D
22
K/1W
+5V
TH1C
NC
PC4B
1
2
3
4
D2D
R30
A
510 F
R14C
22
0
R4D
1.2K
R22B
510 F
C9A 50V/22p
C8A
16V/10u
+5V
R1
7
D
10K
PC2D
1
2
3
4
CN3
4
R15C
39
VH2
DT_STD[0]
CN3
1
T1B
2
1
3
4
R22C
510 F
D G
J7
D
0
TH1A NC
SA
1
A
1
2
3
2 8
+5V
R
2
0
A
6
80
RL
2
B
NC
4
3
2
1
R4A
1.2K
+15V
SA
1C
1
2
3
L1A
1
2
3
4
R5B
22
K/1W
D3A
1
2
3
4
D3B
1
2
3
4
D3C
1
2
3
4
D3D
1
2
3
4
C3
A
1u/
2
50
V
C3C
1u/
2
50
V
C3B
1u/
2
50
V
C3D
1u/
2
50
V
SA
3
1000
V
003:12C
003:12D
0 0 3 : 1 2 D
0 0 3 : 1 2 D
4/4
3/4
2/4
1/2
2
-1
KX-TDA6381 MAIN BOARD No.2 (1/2)
Click on the first or last page to see other KX-TDA6381X / KX-TDA6381SX service manuals if exist.