DOWNLOAD Panasonic KX-NT400RU Service Manual ↓ Size: 4.33 MB | Pages: 108 in PDF or view online for FREE

Model
KX-NT400RU
Pages
108
Size
4.33 MB
Type
PDF
Document
Service Manual
Brand
Device
PBX / IP PROPRIETARY TELEPHONE
File
kx-nt400ru.pdf
Date
PREV: Panasonic KX-NT366RU / KX-NT366RU-B (serv.man2) Service Manual / Supplement

Panasonic KX-NT400RU Service Manual ▷ View online

69
KX-NT400RU
CN6 Pin12 UART_TX
CN6 Pin13 UART_RX
CN6 Pin14 UART_RTS
CN6 Pin15 UART_CTS
CN6 Pin16 PCM_SYNC
CN6 Pin19 PCM_CLK
CN6 Pin18 PCM_IN
CN6 Pin17 PCM_OUT
CN3 Pin3 USB+
CN3 Pin2 USB-
IC4 Pin10 SCLK_SUB
IC4 Pin12 RXD_SUB
   IC4 Pin11 TXD
Q2 Pin4
PC1 Pin4
Q2 Pin8
CN4 Pin2
CMD
CN4 Pin5
CLK
CN4 Pin7
DAT[0]
(27)  USB port D+/D-
(25)  BLUETOOTH UART I/F
(29)  PoE
(28)  SD Card I/F
(26)  BLUETOOTH PCM I/F
(30)  IC4(SUB CPU) I/F
70
KX-NT400RU
Memo:
71
KX-NT400RU
11 Printed Circuit Board
11.1. Main Board
11.1.1. Component View
C449
IC130
1
1
10
R584
R585
C5006
R502
11
10
IC129
IC128
C527
C448
R422
1
10
11
20
R421
R423
R415
CN6
R416
R412
C422
C413
R417
R418
R419
R414
R413
R512
Q501
CN11
19
IC133
C438
R559
R558
C542
R564
CE_RESET
R579
R578
RA541
R524
PbF
PSUP1674Z
KX-NT400
A
R527
RA540
R566
C447
RA542
RA546
RA545
NRESET_OUT
C558
L503
C535
C533
R568
50
RA539
RA538
R529
R565
C504
11
C525
C442
A1
RA550
RA549
RA552
RA551
C526
C441
C506
1
1
54
54
C510
C440
C512
C511
C507
C513
RA526
28
28
RA527
RA529
RA528
C443
IC103
IC104
C521
C520
C444
C514
R555
C519
2
20
L501
C508
27
27
C517
C518
C509
R533
C445
C446
R619
R618
C697
C604
IC123
C622
C49
C623
C524
C503
C502
IC118
C652
C629
D5V
USB_VB
US
R617
C605
CN14
C655
R554
RA531
RA530
RA533
RA512
RA515
RA503
RA501
RA505
R526
R517
R575
RA520
R525
A
A
C
R523
R528
R616
C215
I
R217
C216
C217
DRCLK
R250
R222
S
R286
R223
R224
RA210
R246
R247
R520
R521
RA509
IC101
RA508
RA513
RA514
RA510
RA511
AB1
R514
R504
R570
R574
RA506
R513
R516
C544
L505
RA504
RA502
RA516
RA517
RA519
R571
C539
AB22
R508
A22
BTCTS
BTTXD
BTRXD
RA548
RA547
51
C529
IC107
C5003
C5005
C555 C528
BTR
TS
R501
R522
R503
X501
IC13
IC8
T3
nDETPDN
R511
C538
X502
C515
C602
B
L502
R581
R582
R542
C556
C516
SD_CLK1
R510
R509
R9
R8
C414
1
R35 C10
R505
C406
IC113
VCC_SRAM
C96
R66 R67
C58
IC114
C603
C634
C522
C5001
L26R64
B
R65 C61
C649
IC10
R63
D15
C523
75
76
C5002
C59
Q5
VCORE
SD_CLK1
RA532
C651
19
1
C656
C650
C48
D10
L311
F
R321
L310
C370
+12V
C51
C45
R320
Q301
C428
R318 C308
C429
R60
D14
C55
R58
R59
R314
12
D9
MIC3
D11
C46
C47
R56
C327
C367
IC23
C364
R316
C319
R317
C331
C328
C302
C321
R315
R307
C310
C366
C653
C56
TP5
P
oEGND
L13
Q4
R61
L25
IC9
D12
JK2
C358
R325
C330
R324
C326
C357
C359
C332
T2
C52
C53
R57
Po
E
-
R118
R115
C72
R117
C75
R116
+5.5V
C690
C689
IC14
VCC_PLL
D16
C645
C633
Q6
L24
IC122
R114
C73
L27
C77
C608
C691
100
C5004
C63
C92
L602
38
39
L23
VCC_D
RHY_D3.3
R21
R20
R19
R18
L14
R123
C62
C613
C22
C20
C244
C233
R234
C238
109
RA221
V_BK
C664
1
C50
CN5
SG
CLK_25MHz
IC132
IC124
R580
C536
26
25
C546
R552 R553
L15
RA601
ZNR602
C430
ZNR603
ZNR601
ZNR604
4
CN16
1
C412
R562
R507
R506
C658
C659 C660 C661
C212
R216
R215
R218
R232
R214
C57
C34
JK1
C343
C333
R334
R335
C347
R302
R301
TP302
C301
Q307
Q305
TP301
C317
R344
C305
R304
R303
C304
C314
R343
C313
C355
C354
C303
C365
R308 R319
R311
R322
C340
C335
R338
VCC_A
L307
J3
R346
R332
R
C341
R337
R330
R336
C348
C346 Q
C342R333
C339
Q
R331
C361
R
C31
R327
P
R340
C315 C368
Q304
O
R309
N
T1
IC22
P
IC20
C316
O
IC28
C350
C352
IC29
K
J
C307 R306
J
C306
C356
R305
Q306
DCIN+
DCIN-
MIC1-
SP1
MIC1+
MIC2_2
SP2_2
R341
IC24
C362
R329
C417
C344
R328 C338
C318
C336
C334R326
C369
CN8
Q303
R310
C329
C345
R323
R339
CN4
L308 M
R342
Q302
C337
C349
L
MUTE_SP2
MIC_SW
L309
C324
C323
C322
C325
C351
C312
CN7
1 2
SP3P SP3M
CN15
C610
C309
C696
CN3
C242
C248
nG722
R225
R239 R229
ST0
1
R213
R233
R236
R230
R231
C240
ST1
ST3
ST4
ST6
ST5
9
HT1
R227
R228
HT2
IC1
X503
R536
R535
C80 C85
RA6
128
1
C549
L504
R658
54
C226
C225
C227
C228
55
C243
C221
RA209
Q602
R345
R312
R313
C320
R660 D602
R633
R631
R632
C456
J1
C311
C628
AG
RA208
IC109
C554
R620
C625
R545
RA523
C534
IC5
X1
IC120
C633
C662
C353
K
L601
S
H
40
C363
C408
L603
1
IC21
IC110
R122
R121
G
C547
E
C551 R560
C550 R548 R539
R537
D
L608
R252
R249
C454
R572
C210
C209
C
C537
D
C626
R609
R607
C78
A3.3V
R652
R655
VCC_CORE
C254
C694
R561
R621
C545
C611
C612
RA203
RA202
R219
216
1
RA201
R654
RA220
RA219
RA215
RA213
RA212
RA218
C219
C218
R653
RESET
C457
R242
IC112
X201
IC131
1
L M
2
CN1
15
1
C76
G
D3.3V
C6
R113
C632
E
C627
C88
C69
C9
C89
C70
L1
C437
L20
64
65
R2
C83
C84
R1
C416
C1
C2
F
R23
R22
N
C19
C18
C87
C3
C86
C81
R94
R93
C211
C223
C213
I
R220
R221
R245
RA217
RA216
RA214
C455
C229
C232
RA211
C241
L22
C8
L21
C82
C90
R69
C17 C21
C16 C15
C95
R25
R24
RA5
RA4
RA3
RA2
103
102
C5
C91
C7
C220
C222
C224
163
R226
C231
C236
R235
C631
R635
R634
R630
C239
C234
C237
C230
C654
H
C607
C606
C235
R34
KX-NT400RU : Main Board Component View
72
KX-NT400RU
11.1.2. Bottom View
IC3
IC116
C648
IC30
R656
IC121
C360
IC2
R202
C452
25
24
RA204
RA205
C450
RA612 C419
R614
C695
C403
16
C
17
R403
32
33
IC102
RA404
R612
R611
C250
R201
C202
C405
1
C214
C251
1
R290
C453
C249
R206
C411
C433
SW422
HOOK
C253 C206
C204
R287
L202
RA223
RA222
IC117
IC115
IC111
IC4
R46
C37
R43
Q2
PC1
LEFT
SW419
DO
WN
SW418
ENTER
SW421
RIGHT
SW420
CANCEL
SW416
UP
SW417
TRANS
SW413
SW410
HOLD
SW414
0
SW411
8
SW408
9
SW409
7
SW407
4
SW404
1
SW401
2
SW402
3
SW403
5
SW405
6
SW406
#
SW412
SP-PHONE
SW415
LED403
C451
RA226
C207
43
44
A
C201
RA207
R285
RA206
A
C247
C245
C246
R277
RA1
R98
R97
R96
R89
R91
R659
B
C435
C415
RA224
RA225
RA606
RA605
RA604
RA603
RA602
C205
R661
C693
C621
R657
14
8
7
R651
C432
R3
R4
R5
C4
RA7
R10
L3
R31
L302
L303
L305
L301
L304
L306
R26
R32 R27
C24
L2
R11
R12
R13
R14
R15
L8
L4
R33
C30
C28
D1
R30
L5
L9
R16
R17
RA8
R70
R71
R78
R85
R99
R100
R83
R82
C11
C12
C13
C14
C29
R7
R288
R92
R90
RA9
R87
R86
R84
R6
1
C252
RA230
RA229
L201
RA610
C698
RA609
C203
R205 R204
R291 R289
R203
RA228
R241 R240 R210 C208 R208 R207
RA227
RA608
RA607
R603
R602
R615
C431
C688
C684
37
R605
B
C681
C699
R604
C687
C686
C685
C683
C679
C682
C680
C410
C409
C673
C672
C671
C670
R613
C669
C666
R610
R608
C667
C665
C434
C668
C404
R406
RA403
R583
R530
C501
28
RA521
C563
R573
C568
C530
C596
C567
R577
C562
C561
C597
C531
C578
C573
C583
C587
C559
C589
C560
C565
C588
C543
R518
C566
RA518
FL
T3
RA525
RA524
C557
C541
C540
RA522
RA507
29
FL
T2
C532
C575
56
R563
C439
RA536
RA534
RA535
C579
C574
C564
C569
C584
C580
C586
C582
C505
RA537
R531
R567
R532
C591
C590
C593
C598
C576
C571
C581
C585
C594
C595
C599
C577
C572
C592
R405
C402
R544
R576
RA543
R538
C553
C552
R569
RA544
R546
R548
R547
R540
R541
R543
RA405
X401
24
R408 C426
1
64
C676
C675
C674
C401
C427
R407
C678
C677
36
25
13
12
48
R601
R606
RA611
R402
49
Q403
Q404
R401 RA401
C407
48
RA402
Q402
C423
C424
R424
R420
R411
R410
R409
R404
1
Q401
C436
L10
L6
R29
C26
C23
R28
L7
L11
C25
C94
R120
J5
R48
D5
D17
R50
R40
R38
R41
R45
R119
R47
D6
C39
R44
C38
C418
C93
C40
R51
C44
C41
C43
R54
R55
C42
R52
R53
J4
L28
L12
D3
C35
R49
Q1
D4
D8
C36
Q3
D7
R42
8
1
9
IC7
J6
PoE+
IP1 C27
D2
LED401
LED402
C420
C421
PSUP1674Z
KX-NT400
A
C
KX-NT400RU : Main Board  Bottom View
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