DOWNLOAD Panasonic KX-NT551RU-B Service Manual ↓ Size: 5.07 MB | Pages: 90 in PDF or view online for FREE

Model
KX-NT551RU-B
Pages
90
Size
5.07 MB
Type
PDF
Document
Service Manual
Brand
Device
Telephone / IP PROPRIETARY TELEPHONE
File
kx-nt551ru-b.pdf
Date
PREV: Panasonic KX-NT543RU / KX-NT543RU-B / KX-NT546RU / KX-NT546RU-B (serv.man2) Service Manual

Panasonic KX-NT551RU-B Service Manual ▷ View online

49
  KX-NT551RU/KX-NT551RU-B
MDI_PC_N
MDI_PB_N
MDI_LB_P
MDI_LD_P
MDI_LB_N
MDI_LD_N
MDI_LC_P
MDI_L
A
_N
MDI_LC_N
MDI_L
A
_P
MDI_P
A
_N
MDI_PD_N
MDI_PD_P
MDI_PC_P
MDI_PB_P
MDI_P
A
_P
ether_l
a
n[1]
ether_l
a
n[
2
]
ether_l
a
n[
6
]
ether_l
a
n[4]
ether_l
a
n[5]
ether_l
a
n[
7
]
ether_l
a
n[8]
ether_l
a
n[3]
C404
0.047
u
C401
0.047
u
R359
75
C397
0.047
u
C390
0.01u
1
6
C396
0.047
u
C39
2
0.01u
1
6
C389
0.01u
1
6
C394
0.01u
1
6
C391
0.01u
1
6
R354
75
R355
75
C395
0.01u
1
6
C399
100p
2000
C393
0.01u
1
6
C388
0.01u
1
6
R357
75
DGND
DGND
DGND
DGND
DGND
DGND
DGND
DGND
DGND
DGND
D304
NC
D305
NC
D30
6
NC
D30
7
NC
D308
NC
D309
NC
D310
NC
D311
NC
NC
NC
NC
NC
NC
NC
NC
NC
T301
4
2
0
5
2
4
2
1
19
22
3
2
1
6
2
3
1
7
1
6
18
13
15
14
1
2
11
10
9
8
7
T30
2
4
2
0
5
2
4
2
1
19
22
3
2
1
6
2
3
1
7
1
6
18
13
15
14
1
2
11
10
9
8
7
JK301
1
2
3
4
5
6
7
8
9
JK30
2
1
2
3
4
5
6
7
8
9
ether_pc[8]
ether_pc[
7
]
ether_pc[
6
]
ether_pc[5]
ether_pc[4]
ether_pc[3]
ether_pc[
2
]
ether_pc[1]
D31
6
D31
7
D318
D319
D31
2
D313
D314
D315
(2
5)
(2
4)
(2
3)
(22
)
(2
1)
(2
0)
(19)
(18)
(1
7)
2
/
4
K
X
-NT5
58
  M
A
IN BO
A
RD No.
2
 2
/4
6
5
8
7
A
B
C
(14)-(1)
(18)-(1)
(22
)-(1)
(15)-(1)
(19)-(1)
(1
6
)-(1)
(2
0)-(1)
(2
3)-(1)
(1
7
)-(1)
(2
1)-(1)
50
KX-NT551RU/KX-NT551RU-B
R346
1.5k
L308
NC
R335
10
k
C336
NC
C302
10u
10
D30
2
NC
C36
4
1u
25
R3
26
0
L30
7
C308
0.1u
16
C345
100p
50
C37
4
0.1u
16
CL30
2
PoE_G
C332
NC
L30
6
22
0u
L
2S
W_33
V
C367
22u
100
R3
2
1
0.51 0.5W
CL301
C313
1000p
50
R3
2
4
NC
C317
0.1u
16
C351
0.1u
16
C36
8
NC
C362
NC
C304
0.1u
16
D301
R305
NC
C34
7
NC
220p
50
D303
1
A
C34
6
NC
C340
10u
25
C350
0.1u
16
C306
0.1u
16
L30
2
C366
1u
100
C37
0
0.1u
16
C335
NC
C352
0.1u
16
C36
9
0.1u
16
C372
0.1u
16
C32
5
1u
25
C32
1
0.1u
16
R345
7
5
k
L
2S
W_33
V
C36
3
1u
100
C339
NC
C343
10u2
5
C338
NC
L
2
_D
V
DD
C37
5
0.1u
16
C36
5
0.22
u
C312
0.1u
16
C349
0.1u
16
C330
NC
L
2
_
AV
DD
C32
3
0.1u
16
L303
C359
1u
100
R33
2
0
R333
510
C376
0.1u
16
C327
NC
C337
22
u
25
C36
0
NC
L
2
_
AV
DD10
1
2V
C353
0.1u
16
C358
0.1u
50
C333
10u2
5
IC30
2
11
1
2
13
14
15
G
A
TE
1
6
1
7
MODE
18
V
BI
AS
19
BL
2
0
FRE
Q
2
1
VSS2
L309
R33
6
0
C318
NC
C341
10u
25
C315
0.1u
16
C37
3
0.1u
16
C348
NC
C36
1
NC
C356
NC
C357
NC
C354
0.1u
16
DGND
DGND
DGND
DGND
C310
0.1u
16
DGND
C344
4.7
u
16
C3
7
1
0.033u
2
5
R331
150
Q
301
4
5
1
2
3
6
7
8
MDI_PA
_P
MDI_PA
_N
MDI_LD_N
MDI_LC_N 
MDI_LC_P
MDI_LD_P
MDI_PB_P
MDI_PB_N
MDI_PC_P
MDI_PC_N
MDI_PD_P
MDI_PD_N
COM
R
S
N
R
S
P
RTN
A
U
X
(1
6)
(15)
(14)
(13)
(1
2)
(11)
(10)
(9)
(8)
(7
)
(6
)
(5)
(4)
(3)
(2
)
(1)
(34)
(33)
(3
2)
(31)
(30)
(2
9)
(2
8)
(27
)
(26
)
K
X
-NT551
58
 M
A
IN BO
A
RD No.
2
 3/4
3/4
1
4
3
2
E
D
F
(6
)
51
  KX-NT551RU/KX-NT551RU-B
L1
L
2
C342
NC
D3
2
1
NC
D32
3
4
1
3
2
PoE_G
R36
1
75
L311
C398
0.047
u
100
C384
NC
C380
5
6
0p
50
C403
1000p
2000
C37
8
NC
C381
NC
PoE-A
N
D3
22
PoE_
VSS
D32
0
PoE-A
P
R36
0
75
F
301
1
A
C400
NC
L312
C382
NC
C402
0.047
u
100
C3
7
9
15p
50
D32
4
4
1
3
2
C385
NC
R356
75
C377
NC
L314
L313
C386
NC
C405
0.047
u
100
C40
7
1000p 100
C387
0.047
u
R35
2
100
k
1
PoE_
VSS
IC30
2
1
TMR
2
FB
3
COMP
4
S
EN
5
NC
6
S
ENP
7
V
DD
8
DET
9
CL
ASS
10
VSS
1
VSS2
L310
1
2
3
4
C383
NC
C406
0.047
u
100
R358
75
DGND
DGND
R353
2
4.9
k
1
R351
35
7
PoE-BP
PoE-BN
CL
ASS
 3
(2
5)
(2
4)
(2
3)
(22
)
(2
1)
(2
0)
(19)
(18)
(1
7)
(34)
(33)
(3
2)
(31)
(30)
(2
9)
(2
8)
(27
)
(26
)
6
5
8
7
D
E
F
4/4
K
X
-NT551
58
 M
A
IN BO
A
RD No.
2
 4/4
52
KX-NT551RU/KX-NT551RU-B
12.3. Main No.3
C713
NC
3.3V
IC706
NC
1
VIN
2
VSS
3
CE
5
VOUT
4
NC
5V
STARPOINT-G2
C705NC
C703
NC
C702
NC
C707NC
+5V
DGND
OPE_33V
+3.3V
R708
NC
DGND
DGND
DGND
AVCC33V
L706
VCC5V
R712
NC
L2SW_33V
3.3V
DGND
R738
NC
5V_DET
004:6C
VDD33V
AGND
C721
22u
6.3
NC
DGND
R730
0
R729
0
R726
0
R727
0
R728
0
R740
NC
C746
NC
R704 15k
1
IC701
2
VIN
8
SS
3
SW
4
GND1
5
FB
7
EN
1
BOOT
6
COMP
9
GND2
C701
NC
DGND
DGND
C717
10u 25
R706 100k
C711
22u10
C759
10u 25
R705
12k
DGND
DGND
C710
NC
DGND
C714
0.1u
R702 47k
1
C755 3300p
C706
22u10
C704 0.047u 16
5V
C726
NC
L701
10u
C765
NC
DGND
C732
NC
C768
NC
C766
NC
DGND
C769
NC
R733
0
C712
100p
C718
1000p
C751
1000p
C767
1000p
C770
100p
L2SW(GIGA)
DVF(BBIC)
LDO BLOCK
NC
(2)
(1)
1/4
KX-NT551
58
 MAIN BOARD No.3 1/4
C
B
A
3
2
1
4
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