KX-TC1245RUB - Panasonic Telephone Service Manual (repair manual). Page 79

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RADIATION POWER
RX-SENSITIVITY
1
0
R129
+
C114 16V10
1
C115
K0.018
1
470
R142
1
C125 Z1.0
1
2
3
D106
1
1.0M
R143
1
R141 22K
1
R140
6.8K
2
3
1
Q112
1
3.3K
R144
1
3
2
VOL101
NC
+
16V10uF
C134
1
R137
0
1
2.2K
R131
1
C116 NC
1
C126 K0.22
1
C117 K0.022
1
R132 2.7K
LINE_DTE1
RELAY
120K
DC_IN
BELL_IN
LINE_SZ
1
R118
4.7K
1
47K
R136
1
R110
NC
1
R111
NC
1
NC
D107
2
3
1
Q111
1
C121
K0.033
1
C129
N
C
1
NC
R150
1
R153
NC
1
NC
R148
2
3
1
Q113
NC
LINE_DTE2
2
3
1
Q109
NC
1
C130
N
C
1
C133
NC
+
NC
C128
1
R152 NC
1
NC
R149
2
-
3
+
8
4
IC101:A
5
+
6
-
IC101:B
1
R151 NC
1
NC
R158
5
+
6
-
IC102:B
1
R156
NC
1
R159 NC
2
-
3
+
8
4
IC102:A
1
R161
NC
1
C112
J100P
1
C113
K0.01
1
R124
10K
1
R123
2.2K
1
R122
820
+
25V22uF
C111
1
R130
180
1
R126
1/2W 68
1
D109
Q110
1
R127
1K
1
R128
15K
1
C110 NC
1
R125
NC
1
R121
0
1
C109
K0.01
1
R120 39K
1
D108
0
1
C107 K4700P
1
D104
1
R119
10
K
1
R113
NC
Q105
NC
1
R109
4.7K
1
R117
100K
1
R116
1/4W
10
Q108
2
3
1
Q106
NC
1
R112
NC
1
R115
NC
1
NC
R114
2
3
1
Q107
NC
+
C108 0
Q103
1
R106
100K
1
R105 NC
Q102
NC
1
R108 100K
1
R107
4.7K
Q104
2
3
1
Q101
NC
1
NC
C105
1
500V680P
C104
4
AC-IN
3
AC-IN
+
-
D103
1
NC
R103
1
NC
C106
1
500V680P
C103
1
R102 NC
TIP
1
0
PO101
1
SA101
1
L101
33uH
1
D101
1
R101
1/4W
15K
DC +
DC -
TIP
RING
CN1
RING
1
NC
C101
1
SA102
1
L102
33uH
1
C102
250V
1uF
1
D102
1
C120
K0.47
1
K0.15
C118
1
2
3
D105
1
100K
R133
1
4.7K
R135
1
100K
R134
1
K0.15
C119
TIP_OUT
TIP_IN
1
R146
NC
RING_OUT
RING_IN
1
NC
R147
1
R154
NC
1
NC
R155
1
D309
0
+
C317
6.3V100
1
D307
NC
1
C318
Z0.1
1
Z0.1
C319
1
D306
1
R346
NC
1
R314
NC
1
K0.22
C343
1
R338
100K
1
D308
1
0
R344
1
GND
2
VDD
3 CD
4 OUT
IC302
1
R345
47K
1
L316
1
C309
J330P
1
C315
Z1.0
1
C316
Z1.0
1
R309
3.9K
1
R311 47K
1
R313
10K
1
R310
N
C
1
R312 470K
1
J330P
C311
1
C307
J220P
1
150K
R301
1
L313 NC
+
C305
6.3V100
1
R304 1.0K
1
L312
1
D304
1
Z0.1
C306
1
L314 NC
1
R303 NC
1
NC
C308
MIC2
MIC1
1
D305
1
R307
0
1
R306
1.0K
1
R305 3.3K
1
C313
K0.1
1
C314 K0.01
2
3
1
Q301
+
6.3V100
C310
1
C312
K0.22
1
R308
560
LEVEL_CONT
DC_IN
1
C304 NC
1
D209
N
C
1
NC
D208
1
D303
1
K0.01
C213
2
3
1
Q202
+
-
MIC
1
NC
JP301
1
Z0.1
C342
PWR_DOWN
1
R336
NC
BELL_IN
Z0.1
C302
DC5V(DIGITAL2)
+
C301
6.3V1000
SPEAKER
1
L311
DC5V(ANALOG)
SP1
SP2
1
C303 NC
1
D301
1
D302
SP3
SP4
DC5V(DIGITAL1)
1
L301
1
C135 NC
1
R165
NC
1
C136
NC
1
R164 NC
1
NC
R162
1
NC
R163
2
3
1
Q114
NC
1
C127
K0.22
1
C137
K0.047
1
3.3K
R145
1
D205
1
C123 NC
1
R139 NC
1
C124
NC
1
C132
N
C
ITEM
DATA-MOD
TX-POWER
RX-VCO
TX-VCO
LINE-MOD
1
NC
R157
+
NC
C131
1
R160 NC
NOISE-SQ
CONSUMPUTION
LINE-OUT
DC IMP
RETURN LOSS
SP LINE OUT
SP SP OUT
MIC IN - SP OUT
MIC IN - LINE OUT
DTMF DUAL
1
R138 NC
1
C122 NC
5V
8V
PWR_DOWN
1
100K
R203
1
R201
1/4W
270
Q201
1
D203
+
C207
6.3V220
+
C206
16V100
DC 8V
1
R202
330K
1
D204
+
16V10
C205
1
D202
1
R209
100K
1
NC
R208
REG_GND
1
C214
NC
3
2
1
OUT
IN
GND
REG201
1
C204
Z1.0
1
R207
56K
2
3
1
Q203
2
3
1
Q204
1
C201
K1000P
DC12V
+
NC
C203
1
D210
1
L201
10uH
1
C202
Z1.0
1
D201
PWR_GND
1
10uH
L202
1
R206
1.8K
-40dBm / 1KHz
600
SET SPEC(10CH / 40mA)
20mA
-20dBm / 1KHz
DATA
TALK
3m
3m
CONDITION
3KHzdev / 1KHz , 60dB
-50dBm / 1KHz
-40dBm / 1KHz
-20dBm / 1KHz
P_GND
CH3
CH4
CHG1
CHG2
1
C208 NC
1
C211
Z1.0
1
C212
Z1.0
1
R205
10K
1
C210
N
C
1
C209
N
C
1
D207
1
D206
1
1/4W
39
R204
1
L203
10uH
1
L204
10uH
CDL-TX=-0.2dBm
SP-TX=-1.8dBm
RX=-25.0dBm
CDL-TX=-0.2dBm
SP-TX=-1.8dBm
RX=-25.0dBm
CDL-TX=-0.7dBm
SP-TX=-2.8dBm
RX=-25.0dBm
CDL-TX=-13.2dBm
SP-TX=-14.8dBm
SP-TX=-7.4dBm
CDL-TX=-5.7dBm
SP-TX=-9.0dBm
SP-P AF=-58.4dBm
TALK LIAF=-14.1dBm
CDL-TX=-0.7dBm
SP-TX=-2.4dBm
1KHz
-25dBm
DC48V
Loop simulator
40mA
1kHz
1kHz
1kHz
1kHz
-51dBm
TXAF=-14.0dBm
RX DATA
300Hz/400Hz
5V
(1)
(2)
(3)
(4)
(5)
(6)
(7)
(8)
(9)
(10)
(11)
(12)
(13)
(14)
(15)
(16)
(17)
(18)
(19)
(20)
(21)
(22)
(23)
(24)
(26)
(27)
(25)
(28)
KX-TC1245RUB: SCHEMATIC DIAGRAM (BASE UNIT)
79
KX-TC1245RUB
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