Panasonic KX-TC1045RUB Service Manual ▷ View online
18 SCHEMATIC DIAGRAM
18.1. Base Unit
+1dBm
(TX)
(TX)
1kHz
-25dBm/600
(RX)
-25dBm/600
(RX)
+1dBm
(TX)
-25dBm
(RX)
8V
4.9V
0dBm
(TX)
4.2V
4.2V
4.2V
4.2V
4.2V
4.2V
4.2V
4.2V
TX SIGNAL
Int'com TX
RX SIGNAL
Int'com RX
1kHz
3kHz/devv
-8dBm
-35dBm
1kHz
-51dBm/600
(RX)
(RX)
-20dBm
(RX)
-25dBm
-8dBm
(Int'com TX)
(Int'com RX)
0dBm
(TX)
(TX)
-20dBm
-4dBm
(RX)
-35dBm
8V
(RX)
8V
0
KX-TC1045RUB
33
18.2. Handset
TX DATA
DC
50
AC(RF)
600~900mV
3.8V
3.8V
3.8V
DC 3.8V TALK
3.9V STBY
AC(AF)
-22dBm
-22dBm
AC(AF)
-20dBm
-20dBm
-28dBm
AC(AF)
AC(AF)
-14.0dBm
-14.0dBm
AC(AF)
DC
AC(AF)
-25dBm
-25dBm
BETWEEN
BOTH
TERMINALS
BOTH
TERMINALS
2.046V
2.05V
2.05V
DC 0.9V
AC(RF)
AC(RF)
-21.3dBm
100V~100mV
RX DATA
3.9V(0.3V)
TALK/STBY
RX
MODULATION
FREQUENCY
FREQUENCY
DEVIATION
1k
TX
1k
3kHz
0kHz
DC
DC
DC
3.7V
3.7V
DC
+3.9V
TALK
31 55.4mV
2.413mV
32 2.397mV 2.412mV
33 2.388mV 2.402mV
36 0.283mV 2.394mV
37 2.380mV 2.394mV
41 4.5mV
33 2.388mV 2.402mV
36 0.283mV 2.394mV
37 2.380mV 2.394mV
41 4.5mV
0.1mV
STBY
3.7V
3.7V
3.7V
3.7V
MIC INPUT
-40 dBm
DC
3.9V TALK
3.9V STBY
10ch TALK
RX 30.300MHz
60 dBm
TX SIGNAL
Int'com TX
RX SIGNAL
Int'com RX
KX-TC1045RUB
34
19 CIRCUIT BOARD (Handset)
19.1. Component View (Handset)
C103
C153
R153
R152
C152
R152
C152
R151
R101
C102 C101
C100
C351
J103
J301
C301
R351
R352
R352
C141
J110
C142
C302
R204
C310
C353
C354
J301
C318
R301
R302
R353
R307
R201
J111
R925
R126 R121
C121
C122
C129
R106
R122
C123
R120
C120
C120
R102
C106
C105
C149
R104
R105
J101
R103
LED903
LED902
LED901
TALK
AUTO
INT
3
2
6
5
1
4
9
8
#
0
LED913
LED914
I
M
J
N
C902
CH
MIC
K
O
C510
C506
L
P
7
LED912
LED911
C317
C315
C313
LED904
C151
DC Voltmeter
TX VCO
RX VCO
S2
KX-TC1045RUB
35
19.2. Flow Solder Side View (Handset)
L101
J102
X101
J100
C207
C206
C205
C204
C203
R303
C312
C314
R305
C311
IC301
C325R323R324
C331
C330
R221
C221
C222 R222
R321
C352
R322
C322
C321 C323
VD301
J302
R203
C211
C208
C130
C131
C133
C128
R140
R129
J151
J152
R127
C110
R905
R914
RINGER
C155
C138
C135
T301
Q102
D102
C137
Q913
E C
B
E C
B
R922
R921
R924
R923
RA901
Q914
R801
C136
R205
VR201
C202
D911
D914
D913
J901
C914
X102
C913
C904
C907
C912
C911
C911
X901
IC901
C903
VR202
R907
R933
34
23
44
12
1
RA902 C932 C931
Q911
R913
E
B
B
C
E
B
B
C
E
B
B
C
E
B
B
C
R906
Q912
Q502
C507
C511
D501
MIC_G
MIC
L503
CN1
R502
R503
R501
L502
D201
C901
L504
C916
R202
C156
D901
D917
D916
L901
R911
R910
Q910
C905
C906
D918
C201
D512
C505
D511
C501
L501
C950
C503
Q501
C502
R506
R505
R915
C915
IC801
8
5
1
4
Q101
D101
C191
C192
R139
R124
C125
C127
C124
C126
R125
R123
C111
C109
C108
R109
C112
C107
C104
C150
43
56
1
29
IC101
T201
T210
CF1
CF2
C157
R130
C132
C210
VR301
R100
DUP101
DUP301
RF Voltmeter
Oscilloscope
AF-GENELATOR
MIC-INPUT
+3.9V
S1
SP LEVEL
S6
150
TX GND
TX GND
S4
S3
S9
SIG OUT
RX/TX
Vco Voltage
RX
TX
RX GND
RX ANT
S5
TX ANT
TX ANT
GND
47 F
AF-VOLTMETER
Frequency Counter
FM Deviation Meter
RF-S.G.
S11
50
S2
DC-VOLTMETER
RX
S7
RF VOLTMETER
D912
KX-TC1045RUB
36
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