KX-NT400RU - Panasonic PBX Service Manual (repair manual). Page 71

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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
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