Panasonic KX-UT248RU / KX-UT248RU-B (serv.man3) Service Manual ▷ View online
73
KX-UT248RU/KX-UT248RU-B
12.7.5. No.(21)-(25)
(21) PC port RX (100Base) (1)
(21) PC port RX (100Base) (2)
(22) LAN port TX/RX (1000Base) (1)
(23) PC port TX/RX (1000Base) (1)
(23) PC port TX/RX (1000Base) (2)
(22) LAN port TX/RX (1000Base) (2)
(24) EHS (at TX)
(25) EHS(RX)
Between pin3 and pin6 of JK401
Between pin28 and pin29 of IC401
Between pin1 and pin2 of JK402
Between pin8 and pin9 of IC401
Between pin1 and pin2 of JK401
Between pin24 and pin25 of IC401
1. IC204 pin7 EHS_DET 2. IC204 pin8 EHS_RX
3. IC204 pin9 EHS_TX
3. IC204 pin9 EHS_TX
1. IC204 pin7 EHS_DET 2. IC204 pin8 EHS_RX
3. IC204 pin9 EHS_TX
3. IC204 pin9 EHS_TX
74
KX-UT248RU/KX-UT248RU-B
12.7.6. No.(26)-(28)
(26) BT Module (IC506) at RESET
(27) Communication waveform between IC503 and
BT Module (IC506) (1)
BT Module (IC506) (1)
(27) Communication waveform between IC503 and
BT Module (IC506) (2)
BT Module (IC506) (2)
(28) Communication waveform between IC103 (CODEC IC)
and BT Module (IC506) (1)
and BT Module (IC506) (1)
(28) Communication waveform between IC103 (CODEC IC) and
BT Module (IC506) (1)
BT Module (IC506) (1)
1. IC506 pin14 RESETB 2. IC506 pin6 UART_TX
3. IC506 pin9 UART_RX
3. IC506 pin9 UART_RX
1. IC506 pin14 RESETB 2. IC506 pin6 UART_TX
3. IC506 pin9 UART_RX
3. IC506 pin9 UART_RX
1. IC506 pin14 RESETB 2. IC506 pin6 UART_TX
3. IC506 pin9 UART_RX
3. IC506 pin9 UART_RX
1. IC506 pin32 BT_BCLK 2. IC506 pin2 BT_FS
3. IC506 pin31 BT_DOUT 4. IC506 pin3 BT_DIN
3. IC506 pin31 BT_DOUT 4. IC506 pin3 BT_DIN
1. IC506 pin32 BT_BCLK 2. IC506 pin2 BT_FS
3. IC506 pin31 BT_DOUT 4. IC506 pin3 BT_DIN
3. IC506 pin31 BT_DOUT 4. IC506 pin3 BT_DIN
75
KX-UT248RU/KX-UT248RU-B
13 Printed Circuit Board
13.1. Main Board
13.1.1. Component View
PT01
PT02
R409
R412
R437
C404
R440
C407
C408
C409
R448
X401
DG1
DG2
C435
DL301
DL302
DL303
C442
C443
C444
ST0
ST1
C451
ST2
C452
ST3
C453
C456
Q301
USB-GND
D401
C461
D403
C464
Q501
L109
L301
L302
D410
LF409
L502
L503
L506
L507
IC401
IC402
D423
USB-M
USB-V+
USB-P
JK101
R305
R307
R501
R502
R310
CN101
R509
R510
R511
R513
R514
R320
R515
R517
BKLT
BT-RTS
CN501
C301
C304
C305
C311
C312
C324
C525
SPIMISO
C542
C545
SPICSB
D301
D302
D303
Q401
D305
C366
D308
D501
D502
BT-USBN
BT-USBP
SPIMOSI
SPICLK
L406
IC304
BT-CTS
L411
L414
IC503
IC505
IC506
BT-ANT
JK401
PbF
JK402
PNLB1919Z -GW
A
X501
R333
T402
T403
C5004
D503
L101
L102
C189
L108
L504
L508
L512
C522
C5005
R444
C157
C158
F301
JK301
LF301
C405
C5009
C5010
C5011
C5012
L403
L404
IC302
C335
C336
R457
C103
128
1
38
65
103
11
1
10
1
12
13
24
1
12
13
24
1
4
BLUE
5
Ope-GND
1
14
1
18
V18
A18
A1
V1
23
16
7
1
1
8
1
8
3A 32V
SP
ORG
BLUE
ORG
BLUE
ORG
MIC
GRAY
KX-UT248RU MAIN BOARD COMPONENT VIEW
R402
R403
R404
R405
R406
R407
R408
R600
R410
R411
R606
R413
R415
R416
R417
R418
R419
R611
R612
R423
R424
R425
R622
R623
R626
R434
R435
R438
R439
C401
R632
C402
R634
R635
R636
R638
R445
R639
R446
R447
R452
C416
C418
C419
R458
C420
C421
C422
C423
C424
C426 C427
C428
C429
C5000
C5001
C5002
C430
C431
C5006
C432
C5007
C433
C5008
C436
C437
C438
C439
C440
C441
C445
C446
DL503
C458
C459
C460
C462
C463
L103
L104
C465
L105
C466
L106
C467
C468
C469
C470
C471
C472
C475
C476
C477
C478
C479
L505
C480
L509
C481
C482
C483
C484
C485
C486
C487
C488
C490
C491
C492
C493
C494
C495
C496
C497
C498
C499
R102
R105
R107
R108
R303
R306
R114
R309
R116
R117
R118
R119
R504
R505
R120
R121
R316
R122
R317
R123
R124
R128
R129
R512
R130
R327
R134
R136
R137
R524
R526
R527
R140
R145
R530
R149
R531
R532
R533
R534
C110
R535
C306
R537
C307
R538
C501
R540
C310
R541
C313
C315
C317
C124
C125
C125
C127
C513
C320
R168
R169
C321
C322
C323
C132
C133
C328
C329
C136
C330
C331
C527
R566
C337
R567
C338
R568
C145
C339
C146
C149
C531
C532
C533
C534
C535
R572
C537
C151
C152
C153
C156
C543
C544
C353
R585
D101
C162
D102
R587
C357
D103
C164
D104
C167
C168
C552
R590
R591
R592
R593
C363
C557
C170
C364
C171
C365
C559
C172
R596
C173
C174
R599
C175
C560
C561
C563
C564
D310
C569
C181
C183
C185
C187
C572
C191
C192
C193
C194
C197
C198
L415 L416
76
KX-UT248RU/KX-UT248RU-B
13.1.2. Bottom View
ATRSTN
USBG
USBM
USBP
R430
R431
R432
USBV
R433
ATMS
R442
R449
C411
C412
C413
C414
R450
R451
C417
R454
LF401
LF402
R456
LF403
LF404
C425
HESMIC2
LF410
LF411
LF411
LF413
LF414
DL101
PbF
DL501
C447
C448
C449
C450
C454
C455
D402
DG
D409
L304
D411
C473
L510
L303
SYS-RST
24V
PoE+
PoE-
3.3VA
HESSPOUT2
R516
R518
R519
R520
R521
R522
R523
C308
C118
C503
C316
C518
PoEDCOUT
BT-RX
ARTCK
DCIN1
1.2V
1.3V
C546
C355
C356
ATCK
BT-TX
C359
C166
ATDI
SN
SP
D309
ATDO
IC101
L402
L407
L409
5V
IC305
IC306
L410
L412
L413
IC501
IC502
IC504
IC508
ANT-C1
MIN
MIP
3.3V
L401
C107
C457
D304
IC303
R414
DL102
C111
C178
X101
IC103
PNLB1919Z -GW
A
R334
C101
IC102
C303
IC301
C302
F401
L305
R315
R301
Q302
D306
R326
C104
C415
C574
C573
D424
C160
R138
1.2VA
C159
C102
R115
28
1
56
29
1
27
54
28
25
26
50
51
75
76
100
1
1A 32V
KX-UT248RU MAIN BOARD BOTTOM VIEW
SN
SP
MIN
MIP
1.3V
SYS-RST
1.2V
3.3V
24V
PoEDCOUT
R401
R601
R602
R603
R604
R607
R608
R609
R610
R613
R614
R420
R421
R422
R426
R427
R428
R429
R625
R627
R436
R631
C403
R633
R441
R443
R453
R455
R459
R460
R461
R463
C5003
DL502
D404
D405
D406
L107
D407
D408
D412
D413
D414
C474
D415
D416
D417
D418
D419
D420
D421
D422
C489
L511
C1000
C1001
C1002
C1003
C1004
C1005
C1006
R101
R103
R104
R106
R109
R302
R304
R110 R111
R112
R113
R308
R311
R506
R312
R507
R313
R508
R314
R318
R319
R125
R126
R127
R321
R322
R323
R324
R325
R131
R132
R133
R328
R329
R135
R330
R525
R528
C105
R529
C106
C108
C109
R146
C112
R536
C113
C114
C115
R539
C309
C116
C117
C119
C502
C504
C505
C506
R542
C507
R543
C314
C120
R544
C508
C509
C121
C122
C123
R547
R160
C318
C319
R161
C126
C510
C128
C511
C129
R165
C512
R166
C514
R550
C515
C516
R552
C517
R553
C130
C519
C131
C325
C326
R556
R557
C327
C134
C135
C137
C138
C520
C521
C139
C523
C524 C526
C332
R563
C528
C140
R564
C334
C529
C141
R565
C142
C143
C144
R569
C147
C530
C148
R570
R571
C536
C342
C343
R573
C538
C150
C539
R575
C154
C155
C540
C541
C547
C548
C354
R584
C549
R586
R588
D105
C165
D106
D107
C550
C551C553
C554
C555
C556
C362
C558
C176
C177
C179
C562
C565
C566
C567
C180
C568
C182
C184
C186
C188
C570
C571
C190
C196
C199
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