Panasonic KX-UT113RU / KX-UT113RU-B / KX-UT123RU / KX-UT123RU-B (serv.man3) Service Manual ▷ View online
53
KX-UT113RU/KX-UT113RU-B/KX-UT123RU/KX-UT123RU-B
(1)
(2)
(3)
(4)
(5)
(6)
(7)
(8)
(9)
(10)
(11)
(12)
(12)
(13)
(14)
(14)
(15)
(16)
(17)
(18)
(19)
(16)
(17)
(18)
(19)
(20)
L1
L2
VIN0
R439
49.9
R437
49.9
R438
49.9
R440
49.9
DG
DG
DG
DG
R443
49.9
R442
49.9
R441
49.9
DG
R444
49.9
R451
75
L409
R450
75
D409
4
1
3
2
R456
75
R449
75
L410
D411
4
1
3
2
DG
JK401
1
2
3
4
5
6
7
8
2
3
4
5
6
7
8
9
JK402
1
2
3
4
5
6
7
8
2
3
4
5
6
7
8
9
T403
1 TD+
8 RD-
6 RD+
2 TCT
3 TD-
16
TX1+
7 RCT
15
TXCT
14
TX1-
11
RX1+
10
RXCT
9
RX-
4 NC1
5 NC2
12
NC3
13
NC4
R454
75
R455
75
R453
75
R452
75
T402
1 TD+
8 RD-
6 RD+
2 TCT
3 TD-
16
TX1+
7 RCT
15
TXCT
14
TX1-
11
RX1+
10
RXCT
9
RX-
4 NC1
5 NC2
12
NC3
13
NC4
F401
250V
800mA
PoE_AG
PoE_G
PoE_G
C455
0.047u
100
C450
0.047u
100
C448
0.047u
100
C447
0.047u
100
L411 3.3u
PWRGND
DG
DG
L412
L413
R446
F56k
PoE_G
C452
0.047u
100
C463
0.01u
50
C462 0.01u
50
R445
27k
LF405
1
2
3
4
C449
100p
100
C454
100p
2000
C453
1000p
100
C442
NC
C457
NC
C460
1000p
100
C444
1u
100
C443
1u
100
PoEINBP
PoEINBN
PoEINAP
PoEINAN
DG
DG
C427
0.1u
C428
0.1u
C429
0.1u
C430
0.1u
C441 0.1u
C421
NC
DG
DG
C440
1000p
C439
1000p
C436
1000p
C438
1000p
L408
LF403
2
3
1
4
LF404
2
3
1
4
LF402
2
3
1
4
LF401
2
3
1
4
DG
DG
DG
DG
R447
33k
D407
D413
D408
D405
D406
D412
D414
D415
C451
22u
100
PWRGND
D420
1
D410
A
D421A
C456
NC
C435
330p
C437
22u
R448
82.5
LAN
PC
C
E
B
A
D
F
6
5
8
7
KX-UT123
RU MAIN BOARD No.2 2/2
14 15
15 16
8
9
11 12
54
KX-UT113RU/KX-UT113RU-B/KX-UT123RU/KX-UT123RU-B
12.3. UT123RU Main No.3
L1
L2
VCCP
A
AG
VCCA
AG
PDN
DCIN
3.3V
DG
F301
32V
3A
R304
F49.9k
R305
F16.2k
R306
100k
IC301
1
BST
2
GND
3
FB
4
EN
5
IN
6
SW
12V
PWRGND
DG
3.3V
AG3
DG
PWRGND
PWRGND
PWRGND
PWRGND
PWRGND
PWRGND
PWRGND
PWRGND
PWRGND
OPE_VCC
004
DG
DG
PWRGND
PWRGND
R329
100k
PWRGND
PWRGND
IC303
1
BST
2
GND
3
FB
4
EN
5
IN
6
SW
PWRGND
PWRGND
PWRGND
5V
DG
D307
2
1
1
3
PoE_DC
DG
PWRGND
DCIN1
C308
0.01u
C310
0.01u
16
C313
NC
C316 0.01u
16
C328
0.01u
16
C330
0.01u
DG2
L301
10u
L303
10u
C306
22u
C309
4.7u
16
C329
4.7u
16
3.3V
5V
R330
F51k
R331
F10k
LF301
1
2
3
4
C307
0.1u
C31
1
0.1u
C315
0.1u
C320
0.1u
C321
0.1u
C322
0.1u
C324
0.1u
C325
0.1u
C326
0.1u
C333
0.1u
C301
10u
C304
NC
C305
NC
DL301
1
2
3
DL303
1
2
3
PWRGND
DL302
1
2
3
PWRGND
IC304
NC
1
OUT
2
VDD
4
NC1
5
NC2
3
GND
C334 1000p
R338
0
R339
NC
PWRGND
PWRGND
DG
3.3V
R336
F10k
R310
F33k
R313 F5.1k
PWRGND
R341
100
R342
100
DG
R328
10k
D308
2
1
R340
33k
D305
D306
D302
D303
C312
470u
16
C338
NC
PWRGND
C331
22u
R344
0
C339
NC
C340 1000p
DG
DG
C341
1000p
C342
1000p
C343
1000p
C344
1000p
IC305
1
VIN
2
VSS
3
CE
5
VOUT
4
NC
5V
DG
C345
1u
R301
0
AG
C336
33p
C337
33p
R343
1k
C335 1000p
JK301
2
3
1
C
E
B
D
F
3
24
6
5
8
7
KX-UT123
RU
MAIN BOARD No.3
55
KX-UT113RU/KX-UT113RU-B/KX-UT123RU/KX-UT123RU-B
12.4. UT123RU Main No.4
+
-
+
-
C
E
B
A
D
F
3
4
2
1
AG3
HSMICINP
MIP
C115
33p
HSSPOUTN
HSSPOUTP
AG3
MICBIAS
OPBIAS
MICBIAS
OPBIAS
OPBIAS
AG3
SPP
SPN
SPAMPEN
5V
AG3
C117
33p
5V
MICBIAS
AG
AG3
AG3
AG3
AG3
AG3
MICBIAS
AG
AG
DG
JK101
1
2
3
4
2
3
4
5
C134
1000p
R101
47k
R102
47k
R130
2.2k
R131
2.2k
R132
2.2k
R133
2.2k
R107
4.7k
SPP
SPN
MIP
MIN
HESGND
L101
L102
IC103
4
GND
8
VCC
BKLT
001
BKLT_K
BKLT_A
C106
1u
IC103
3
2
1
IC103
5
6
7
C122
10p
C110
10p
R124
12k
R125
12k
C129
0.47u
C130
0.47u
C127
0.47u
C128
0.47u
R122
12k
R123
12k
C109
10p
C124
10p
R126
220
R127
220
R128
220
R129
220
C120
0.1u
C
111
1
u
C101
0.22u
C102
0.22u
C131
0.1u
C113
10u
C135
NC
AG3
L103
0
L104
0
D103
D104
D105
D108
DL101
1
2
3
C174
100p
C175
100p
C121
330p
C118
330p
C176
NC
C177
NC
C123
100p
C126
100p
C138
NC
C125
100p
C137
100p
C139
NC
C179
NC
C180
330p
C181
NC
DG
DG
DG
DG
DG
DG
DG
DG
DG
DG
DG
DG
DG
DG
C182
1000p
C183
1000p
C184
0.01u
R109
470
R112
470
R152
470
R153
470
C185
100p
AG3
C186
100p
AG3
C105
1u
C107
1u
IC101
1 STBY
2 NC
3 IN+
4 IN-
5
OUT+
6
VDD
7
GND
8
OUT-
9
FIN
DG
DG
C143
1000p
C141
1000p
L108
L107
C108
NC
VCCA
DG
CL101
CL102
CL103
CL104
CL106
CL105
CL108
DG
DG
DG
DG
C191
100p
C190
100p
C189
100p
C188
100p
C146
1000p
C147
1000p
C192
1000p
C193
1000p
AG3
AG3
R120
68k
R121
68k
R118
68k
R119 68k
R108
2.7k
R106
0
AG
L115
D106
D107
D101
D102
L106
L105
KX-UT123
RU MAIN BOARD No.4 1/2
56
KX-UT113RU/KX-UT113RU-B/KX-UT123RU/KX-UT123RU-B
+
-
+
-
6
5
8
7
C
E
B
A
D
F
OPE_VCC
003
ASICCLK
001
ASICRST
001
INT0
001
I2C_SDA
001
I2C_SCL
001
AG2
MICBIAS2
R144
2.2k
MICBIAS2
AG2
AG2
HEADSET_SPOUT
001
HEADSET_MIN
001
C164
33p
AG2
OPBIAS2
DG
AG2
R147
NC
MICBIAS2
OPBIAS2
5V
DG
AG2
AG2
R143
330
R148
4.7k
HESMIC2
HESSPOUT2
IC105
4
GND
8
VCC
5
6
7
IC105
3
2
1
C168
0.47u
R142
12k
C161
10p
C165
10p
C171
1u
C163
0.1u
0.1u
C136
0.1u
C173
10u
C169
10u
AG2
L111
C167
NC
C166
NC
C170
NC
L112
C178
1000p
AG2
5V
L113
L114
R137
470
R155
470
C160
1u
CN101
1
2
3
4
5
6
7
8
9
10
11
12
C187
1000p
AG2
3.3V
R157
100
C172
22u
R140 68k
R141
68k
R149
2.7k
L116
L117
KX-UT123
RU MAIN BOARD No.4 2/2
17 ASICCLK
17 I2CSDA
17 I2CSCL
17 ASICRST
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