Icom IC-7300 Service Manual page 70

• TUNER UNIT (TUNER-1)
D1011
LDAN222
RL1011
EC2-9TNU
J1001
L1001
To the PA UNIT
AS100340
TX signal
RX signal
C1013
0.1 C1014
0.1
R1431
R1441
R1451
L1311
LR-317
IC1701
BA2903SFVM
2
1
3
10-9
R1432 R1503
120 100
R1442 47
120 100
R1452
120 100
LR-604
L1501
R1504
47
C1504
D1311 33P
L1312
MMBD352LT1G
D1312
LR-317
R1272
MMBD352LT1G
2.2k
MP1301 MMBD452LT1G
2355
TPWRL_
8
V+
GND
4
IC1701
BA2903SFVM
R1263
6
220k 7 IMPI
R1264
5
220k
R1251
IREFV
3.3k
NATT1S
NATT1R
D1021 NATT2S
NATT2R
C1023
LDAN222
0.1 C1024
0.1
RL1021
EC2-9TNU
L1009
AS080440
J1042
R1612 R1611
14V
10k 220
Q1611
2SC4116
Q1621
2SC4116
D1271
C1271
0.1
SWRL_
14V
3R3V
IC1901
NJM2904CRB1
5
R1902
7
6
330
8
IC1901 V+
IC1901
NJM2904CRB1
GND
NJM2904CRB1
R1903
3 4
1
330
2
TPWRL
SWRL
IMPI
IREFV
PHASEI
NATT1S
NATT1R
NATT2S
NATT2R
DET_OUT
TUNER-2
14V
3R3V
To the MAIN UNIT
EP1801
J1801
MPZ1608S101A
1 14V
2 14V
3 14V
EP1802
4 NC
MPZ1608S601A
5 3R3V
6 3R3V
7 NC
8 GND
9 RFCNT(EXT)
10 GND
11 CNTRS(EXT)
12 NC
13 NC
R1805 100
14 IREFV
R1806 100
15 TPWRL
R1807 100
16 IMPI
R1808 100
17 SWRL
R1809 100
18 PHASEI
19 GND
100
R1810
20 TSTB1
R1811 100
21 TSTB2
100
R1812
22 TSTB3
R1813 100
23 TSTB4
100
R1814
24 TDAT
R1815 100
25 TCLK
100
R1816
26 TOE
27 GND
28 GND
29 GND
30 GND
TSTB1
TSTB2
TSTB3
TSTB4
TDAT
TCLK
TOE