Motorola CP040 Detailed Service Manual page 338

3-28
0 V (Rx)
3.3 V (Tx)
TX_ENA
PA_TX_ENA
Q171
5T
PA_5T
C109 C114
0.1uF 390pF
C103
390pF
+11.7 dBm
860 mV (RF)
R101 C100 L102
5.6 390pF 3.6nH
TX_INJ
PA_TX_INJ
C104
R100 R102 R103
10pF
820 820 3K
SH100
SHIELD
1
UHF2 (438-470MHz) Transmitter and Power Control Schematic Diagram PCB No. 8416205H02-C/-D
USWB+
PA_USWB+
7.5 V (Rx)
0 V (Tx)
4 5
Q170
EMB10
3
R158
1.5K
C156
.01uF
4.4 V (Hi)
3.6 V (Lo) (TYP, Tx)
8 2
TP150
1
1 3
4
U150-1
LM2904
PWR_SET
PA_PWR_SET
R162
10K
2.6 V (Hi)
1.8 V (Lo) (TYP, Tx)
R110
680
C111 R111
390pF 2K
R106 R107 L100
4.7K
NU 220nH
+18.5 dBm
C102
1900mV (RF)
0.1uF
L101
220nH
R105
2.7K
1
C105
3.9pF
Q100
2
BFG540W
1.38 V (Tx)
0.65 V (Tx)
C120
NU
R104 C101 C108
18 0.1uF 390pF
7.5 V
C170
390pF
6
2 1
0 V (Rx)
6.8 V (Tx)
C171
390pF
C157
0.1uF
C154
R159 390pF
0
C151
390pF
Q150
3 8 6
1 7
5
R157
4
2
2.2K
U150-2
LM2904
C152
390pF
C159 R156
C153
390pF 330 0.47uF
C158
390pF
C113
2.73 V (Hi)
L110
390pF
220nH
2.32 V (Lo) (TYP, Tx)
C112 C173 VR110
0.1uF 390pF MM3Z3V9T1
3.9V
DO NOT MEASURE
2 3
L103 C106
5.1nH 390pF
1 4
RFIN RFOUT
C117
390pF
+18.7 dBm
1930 mV (RF)
5
C107
U110
NU
RA07M4452M_UHF
0.9 V (Tx)
UHF2 PCB 8416205H02-C/-D Schematic Diagrams
R152
100K
R153 1%
100K
1%
U151
C150
57R01
390pF
R154 R151
100K 39
R155 R150
1%
100K
0.1
1%
C172
390pF
R120
150
R121
150
C115 C116
1uF 0.1uF
C121
390pF
L120
220nH
C131 C133 C135
D120
NU NU NU
MA4PH261
L130 L131 L132
22.69nH 27.42nH 22.69nH
C122
C132 C134 C136
6.8pF 6.8pF 4.3pF
0 V (Rx)
RX_OUT
L121 PA_RX_OUT
C124
15nH
390pF
C130
5.1pF
D121
C123
MA4PH261 3.9pF
C137
220pF
4 S1
3 S2
2 G1
5 G2
1
T1
6
T2
L140
J140
43pF
M140
ANTENNA_NUT
1 3
TAB1 TAB3 NC
2 4
NC TAB2 TAB4 NC
C141 L141
22.69nH
NU