Panasonic KX-NT400RU Service Manual ▷ View online
49
KX-NT400RU
(j)
(k)
(m)
(n)
KX-NT400R
U :
MAIN BO
ARD No
.1 (2/4)
1/4
2/4
3/4
4/4
DG
DG
R61
47
C55
680p
R57
10
R60
2.7k
IC9
1
CE
2
GND
3
VFB
4
EXT
5
VIN
D12
DG
Q4
D
1
D
2
G
3
S
4
D
5
D
6
D14
NC
C49
220u/16V
L13
33uH
DG
D15
R67
2.7k
IC10
1
CE
2
GND
3
VFB
4
EXT
5
VIN
R63
10
R64
47
Q5
D
1
D
2
G
3
S
4
D
5
D
6
C61
1200p
A3.3V
L14
33uH
R58
15k(1%)
R59
3.3k(1%)
R65
30k(1%)
R66
13k(1%)
SYS_EN
005:9A;006:6D
L24
27uH
Q6
1
D
2
D
3
G
4
S
5
D
6
D
R115
47
D16
R118
2.7k
IC14
1
CE
2
GND
3
VFB
4
EXT
5
VIN
DG
C75
5600p
R114
10
PWR_EN
005:9A;006:6C
DG
R117
20k(1%)
R116
10k(1%)
+5.5V
AG
D10
D11
C57
K0.1
C59
K0.1
C76
K0.1
C43
K0.1
C63 K0.1
C52
K0.1
C73
K0.1
C51
K0.1
C56
100u/16V
C62
330u/6.3V
C77
330u/6.3V
C78
100u/16V
C50
100u/16V
A3.3V
L15
C72
Z10/25V
C53
Z10/25V
C58
Z10/25V
C48
NC
D3.3V
+12V
+12V
+5.5V
D3.3V
R35
33k
R9
NC
DC_ALARM
002:11D;004:9A
VCC_D33
nDETPDN
IC13
1
VOUT
2
VIN
3
NC
4
VSS
DG
C10
NC
R8
NC
L27
L26
L25
C96
K0.01u
VCORE0
VCORE
F
E
H
G
45
6
3
2
1
50
KX-NT400RU
(b)
(d)
(g)
(i)
(a)
(c)
(e)
(f)
(h)
(2)
(1)
(3)
(4)
KX-NT400R
U :
MAIN BO
ARD No
.1 (3/4)
1/4
2/4
3/4
4/4
DG
DG
R13
49.9(1%)
AG
DG
T1
1
TD+
2
TCT
3
TD-
4
NC4
5
NC5
6
RD+
7
RCT
8
RD-
9
RX-
10
RXCT
11
RX+
12
NC12
13
NC13
14
TX-
15
TXCT
16
TX+
R21
DG
R16
49.9(1%)
R20
DG
C9
K0.01
[1608]
R27
75
R32
75
DG
R11
49.9(1%)
R22
R31
75
DG
R10
49.9(1%)
R17
49.9(1%)
C20
100p
R25
PHY_A33
PHY_A33
JK2
TX+
1
TX-
2
RX+
3
4
4
5
5
RX-
6
7
7
8
8
DG
PHY_A33
DG
R26
75
DG
C24
1000p/100V
[2125]
R19
R14
49.9(1%)
DG
R15
49.9(1%)
T2
1
TD+
2
TCT
3
TD-
4
NC4
5
NC5
6
RD+
7
RCT
8
RD-
9
RX-
10
RXCT
11
RX+
12
NC12
13
NC13
14
TX-
15
TXCT
16
TX+
R23
C19 100p
JK1
TX+
1
TX-
2
RX+
3
4
4
5
5
RX-
6
7
7
8
8
R18
C17
100p
R12
49.9(1%)
VCC_D33
DG
R24
DG
L20
1
2
4
L21
1
2
3
3
4
L22
1
2
4
L23
1
2
3
3
4
C16
100p
C18
K0.1
C22
K0.1
C21
K0.1
C15
K0.1
C14
K0.1
C12
K0.1
C11 K0.1
C13 K0.1
C8
Z22
[2125]
L1
2
3
DG
L3
NC
AG_2
L2
EtherJACK
(LAN)
EtherJACK
(PC)
7
68
11
10
9
D
E
C
B
A
(19), (20)
(17), (18)
(13), (14)
(11), (12)
51
KX-NT400RU
(j)
(k)
(m)
(n)
(2)
(1)
(3)
(4)
KX-NT400R
U :
MAIN BO
ARD No
.1 (4/4)
1/4
2/4
3/4
4/4
D7
C40
NC
PoEGND
R41
220k
R28
75
Q1
E
C
B
C23
0.1/250V
[3216]
R50
6.8k
D1
1
2
4
R53
180k(1%)
HD_SP
003:8C
D8
Q3
S
D
G
C29
1000p/100V
[2125]
PoEGND
C44
K0.47
D9
R43
100
R40
0
PoE8V
R30
75
R49
10k
L9
R44
100k/0.75W
PoE8V
C26
D5
PoEGND
PoEGND
L10
R54
330
PC1
1
23
4
IC7
1
ITH/RUN
2
PGND2
3
NGATE
4
PVCC
5
RCLASS
6
NC6
7
VPORTN
8
NC8
9
NC9
10
POUT
11
PWRGD
12
SIGDISA
13
VPORTP
14
SENSE
15
PGND15
16
VFB
HD_AG
003:8C
C28
0.1/250V
R46
10k
R33
75
L4
L7
R38
220k
C38
1u/250V
C27 0.047/100V
[2125]
PoEGND
IC8
1
NC1
2
A
3
NC3
4
C
5
REF
L8
L5
R51
1.2k
R55
47k(1%)
R47
0.068(1%)
C37
1000p/100V
R48
100k(1%)
C45
680p/50V
PoE8V
R52
560
C35
4.7u/16V
L6
R42
45.3k(1%)
PoEGND
PoEGND
C25
1000p/100V
[2125]
PoEGND
L11
D4
PoEGND
C30
[3216]
T3
1
2
3
4
5
6
7
8
9
10
R56
15/0.5W
D2
1
2
3
3
4
R29
75
C41
100p
PoEGND
IP1
1A
Q2
S
1
S
2
S
3
G
4
D
5
D
6
D
7
D
8
D6
C31
Z0.1/50V
R119
NC
D17
NC
DG
PoEGND
J5
NC
C36
K0.1
C42
K0.1
DCIN+
PoE-
C47
K0.1
C46
Z10/25V
PoE+
PoEGND
DG
R45
33
D3
HS_MIC-
003:8C
HD_MIC
003:8C
HS_AG
003:8C
HS_MIC+
003:8C
HS_SP
003:8C
AG
DG
SG
R34
0
[1608]
J3
DCIN-
SG
AG_2
AG_2
AG_2
L28
L
12
0
J6
0
C93
2200p/1kV
C94
Z0.1
PoEGND
C34
47uF/80V
CN1
1
DCIN+
2
DCIN+
3
DCIN+
4
NC
5
DCIN-
6
DCIN-
7
DCIN-
8
AG
9
HS_MIC-
10
HS_SP
11
HS_AG
12
HS_MIC+
13
HD_MIC
14
HD_SP
15
HD_AG
R120
100K
C39
0.047u/100V
J4
K0.01/250V
F
E
H
G
7
68
11
10
9
(29)
(29)
(29)
52
KX-NT400RU
10.1.2. VoIP
(1)
(2)
(3)
(4)
(5)
(6)
(7)
(9)
(9)
(8)
(10)
(10)
(11)
(12)
(13)
(14)
(16)
(15)
(17)
(18)
(20)
(20)
(22)
(21)
(24)
(23)
(26)
(29)
(31)
(33)
(31)
(33)
(36)
(38)
(40)
(42)
(44)
(46)
(40)
(42)
(44)
(46)
(25)
(27)
(28)
(30)
(32)
(34)
(35)
(27)
(28)
(30)
(32)
(34)
(35)
(37)
(39)
(41)
(43)
(45)
(47)
(39)
(41)
(43)
(45)
(47)
(48)
(49)
(49)
(50)
(51)
(19)
KX-NT400RU : MAIN BOARD No.2 (1/2)
D
F
E
C
B
A
H
G
4
5
6
3
2
1
A[2]
A[7]
A[1]
A[9]
A[11]
A[20]
A[15]
D[14]
A[3]
D[12]
A[10]
A[8]
A[4]
A[7]
A[1]
A[8]
D[5]
A[11]
A[4]
D[6]
A[16]
A[16]
A[8]
A[6]
A[15]
A[5]
A[5]
DQM[1]
A[5]
A[22]
D[11]
A[3]
DQM[3]
D[4]
A[2]
A[9]
A[4]
A[2]
D[13]
A[21]
A[0]
A[6]
A[12]
D[8]
A[14]
A[13]
A[7]
D[2]
A[17]
A[6]
A[14]
D[7]
D[1]
DQM[2]
A[9]
D[0]
A[13]
A[11]
D[9]
A[13]
A[14]
A[0]
A[19]
A[10]
D[10]
DQM[0]
A[12]
A[10]
D[15]
A[3]
A[1]
A[18]
DQM[1]
D[3]
DQM[3]
D[31]
D[0]
D[1]
D[2]
D[3]
D[6]
D[5]
D[4]
D[7]
D[16]
D[17]
D[18]
D[19]
D[20]
D[21]
D[22]
D[23]
DQM[2]
DQM[0]
D[12]
D[13]
D[14]
D[15]
D[8]
D[9]
D[10]
D[11]
D[30]
D[29]
D[28]
D[27]
D[26]
D[25]
D[24]
VCC_D 33
RA203
DG
DG
VCC_D 33
DG
DG
RA206
33
DG
DG
X201
8.192MHz
D33_2
DG
D33_2
L201
DG
D33_2
D33_2
D33_2
VCC_CORE
DG
DG
IC2
9
A19
16
A18
17
A17
18
A7
19
A6
20
A5
21
A4
22
A3
23
A2
24
A1
25
A0
26
CE
27
VSS27
28
OE
29
DQ0
30
DQ8
31
DQ1
32
DQ9
33
DQ2
34
DQ10
35
DQ3
36
DQ11
37
VCC
38
DQ4
39
DQ12
40
DQ5
41
DQ13
42
DQ6
43
DQ14
44
DQ7
45
DQ15/A-1
46
VSS46
47
BYTE
48
A16
1
A15
2
A14
3
A13
4
A12
5
A11
6
A10
7
A9
8
A8
11
WE
12
RESET
10
A20
13
NC13
14
WP#/ACC
15
RY/BY
VCC_D33
D33_2
D33_2
DG
DG
DG
RA201
33
33
33
DG
C244
220u/6.3V
D33_2
C210
18p
VCC_D33
DG
DG
RA202
IC3
23
A11(BA1)
24
A10/AP
25
A0
26
A1
27
A2
28
DQM2(bit23-16)
29
VCC29
30
NC30
31
DQ16
32
VSSQ32
33
DQ17
34
DQ18
35
VCCQ35
36
DQ19
37
DQ20
38
VSSQ38
39
DQ21
40
DQ22
41
VCCQ41
42
DQ23
43
VCC43
1
VCC1
2
DQ0
3
VCCQ3
4
DQ1
5
DQ2
6
VSSQ6
7
DQ3
8
DQ4
9
VCCQ9
10
DQ5
11
DQ6
12
VSSQ12
13
DQ7
14
NC14
15
VCC15
16
DQM0(bit7-0)
17
#WE
18
#CAS
19
#RAS
20
#CS
21
NC21
22
A12(BA0)
45
DQ24
46
VSSQ46
47
DQ25
48
DQ26
49
VCCQ49
50
DQ27
51
DQ28
52
VSSQ52
53
DQ29
54
DQ30
55
VCCQ55
56
DQ31
57
NC57
58
VSS58
59
DQM3(bit31-24)
60
A3
61
A4
62
A5
63
A6
64
A7
65
A8
66
A9
67
CKE
68
CLK
69
NC69
70
NC70
71
DQM1(bit15-8)
72
VSS72
73
NC73
74
DQ8
75
VCCQ75
76
DQ9
77
DQ10
78
VSSQ78
79
DQ11
80
DQ12
81
VCCQ81
82
DQ13
83
DQ14
84
VSSQ84
85
DQ15
86
VSS86
44
VSS44
DG
DG
D33_2
VCC_D33
DG
DG
DG
C223
+
-
Z10
DG
DG
DG
RA
205
RA207
33
VCC_D33
VCC_D33
D33_2
DG
DG
VCC_D33
VCC_D33
DG
C209
18p
VCC_D33
VCC_D33
VCC_D33
D33_2
RA204
33
33
R201
33k
R204
33k
R207
33k
R232 33
R202
33k
R208
0
R205
33k
R206
33k
R215
1M
R218
33
R210
33k
R219
33k
R203
33k
R214
4.7k
R216
150
R277
0
R240 33k
R241 33k
R285
22
D33_2
D33_2
C213
100p
C208
K0.01
C214
K0.01
C247
K0.1
C251
K0.1
C252
K0.1
C250
K0.1
C211
K0.1
C253
K0.1
C205
K0.1
C249
K0.1
C206
K0.1
C245
NC
C246
K0.1
C215 K0.1
C202
K0.1
C201
K0.1
C203
K0.1
C204
K0.1
C207
K0.1
D33_2
R242
33k
RA230
0
RA229
0
RA222
0
RA223
0
RA228
0
RA227
0
RA226
33k
RA224
0
RA225
0
R217
82
DRCLK
IC131
1
OUT
2
VDD
3
GND
4 NC
5 CD
C254
K0.047u
C212
K0.22
RESET
R249
180
(1)
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