Motorola CP040 Detailed Service Manual page 196

3-28
TX_ENA
820 mV (RF)
TX_INJ
PA_TX_INJ
VHF2 (146-174MHz) Transmitter and Power Control Schematic Diagram PCB No. 8486769Z04-C/Z05-D
USWB+
PA_USWB+
0 V (Rx) 7.4 V (Rx)
R171 3
0.15 V (Tx)
1
Q171
MMBT3904
PA_TX_ENA 6.8K
2
1.8V (Tx)
R524
10K
2.5 V (Low)
3.0 V (Hi)
2.4 V (Hi)
1.06 V (Low)
PWR_SET
5T
PA_5T
R107
C109 C114 R106
150
0.1uF 1500pF 4.7K
C102
0.1uF
C103 L101
560nH
1500pF
R105
1.5 V (Tx)
C100 1.2K
1500pF 3
1
L102
R101
2
100nH
18
R100 R102 R103
300 300 3.3K
C171
2.7pF
C104
NU
SH100
SHIELD
1
7.5 V
C170
0.1uF
4 5 6
Q170
EMB10
3 2 1
C172
1500pF
0 V (Rx)
C157
0.1uF
7.3 V (Tx)
C154
1500pF
C155
0.1uF
R158
1.5K
C156
.01uF
3
Q150
1
R157
2
5.6K
8 2
TP150
1
1 3
4
C159 R156 C153
U150-1
1500pF 330 0.47uF
LM2904
PA_PWR_SET
R162
10K
C158
1500pF
2.5 V (Low)
L110
R110
3.0 V (Hi)
360 560nH
VR110
L100 C111 R111 C110 C112
0.1uF 1500pF 4.3V
560nH NU NU
2
1500 mV (RF)
L103
C106
30nH
4.9 V (Tx) 1500pF
1
RFIN
1100 mV (RF)
C107
C105
10pF
NU
Q100
BFS540
R104 C101 C108
51 1500pF 0.1uF
VHF2 PCB 8486769Z04-C/Z05-D Schematic Diagrams
0 V (Rx)
7.25 V (Tx)
R152
100K
1%
R153
C151
1500pF 100K
1%
U151
C150 57R01
8 6
1500pF
7
5
4
R154 R151
100K 22
U150-2
1%
R150
LM2904 R155
0.1
C152 100K
1500pF 1%
C113 C115 C116
1500pF 1uF 0.1uF
L120
560nH
C131 C133
3.3pF
DO NOT MEASURE 3.3pF
3
4
RFOUT
L130 L131
C117 D120 43.67nH
43.67nH
1000pF
MA4PH261
5
U110
C130 C132 C134
RA07M1317M_VHF
12pF 27pF 27pF
0 V (Rx)
L121
0.9 V (Tx)
47nH
C124
1500pF
C122
15pF
D121
C123
MA4PH261
15pF
R120
C120
150
1500pF
R121
150
0 V (Rx)
1.6 V (Tx)
C121
1500pF
C135
3.9pF
C137
200pF
S1
L132
43.67nH
S2
G1
C136
G2
13pF
T1
T2
C140
13pF
J140
M140
RX_OUT
ANTENNA_NUT
PA_RX_OUT
1 3
TAB1 TAB3
NC
2 4
NC TAB2 TAB4 NC
C141 L140
18pF
30.54nH