Icom IC-M803 - Page 72

11-6
• MAIN UNIT (4/9)
C4842
47P
L4847
1.2U
L4818
1U
T8V
C4823
150P
0
R4814
C4818
220P
D4704
L1SS400
820P
C4736
C4861
0.1
L4817
5.6U
L4797
3.9U
C4860
0.1
1SV308
D4842
L4845
0.82U
C4830
0.1
C4848
150P
22K
R4706
L4799
1.5U
C4862
0.1
C4732
0.1
0.001
C4820
120P
C4795
L4815
0.68U
1SV308
D4791
1SV308
D4732
Q4702
L2SC4081
C4829
270P
C4702
15P
C4852
10P
L4844
2.2U
1SV308
D4731
820P
C4734
180P
C4794
R4703
22K
L4848
1.5U
C4803
0.1
Q4701
LDTC143ZE
27P
C4800
L4850
0.47U
L4796
3.3U
1SV308
D4841
0.001
C4819
C4827
39P
120P
C4798
R4707
10K
J4701
C4705
0.047
L4814
5.6U
L4733
10U
L4820
0.56U
82P
C4828
18P
C4859
C4847
47P
C4701
10P
L4842
2.2U
LRB706F
D4703
C4739
0.1
C4801
56P
L4794
2.7U
C4841
0.1
C4792
0.1
C4811
0.1
FTR-B4CA012Z
RL4701
C4854
68P
R4705
100
L4793
3.3U
1SV308
D4812
C4797
180P
1SV308
D4792
L4735
10U
C4704
0.0047
1SV308
D4811
C4853
68P
R4704
10K
1SV308
D4752
100P
C4754
56P
C4776
C4759
0.1
L4753
15U
L4773
10U 1SV308
D4772
1SV308
D4751
C4772
0.1
L4755
15U
1SV308
D4771
C4779
0.1
56P
C4774
100P
C4756
C4752
0.1
L4775
10U
33P
C4715
LDTA114YE
Q4883
68
R4885
LDTC143ZE
Q4884
LDTA114YE
Q4871
DRRF
15P
C4885
10
R4884
0.1
C4881
1SV308
D4883
2.2K
R4883
2SC3356G
Q4881
1SV308
D4871
100U
L4874
LR-589
L4882
1000U
L4883
100U
L4886
14V
100U
L4884
LDTC143ZE
Q4872
2.2K
R4882
22K
R4875
0.1
C4872
L1SS400
D4882
L4872
100U
1SV308
D4872
10
C4883
LR-589
L4885
DPONS
22K
R4887
LDTA114YE
Q4882
100U
L4887
100U
L4873
100U
L4881
1SV308
D4881
DPOFS
100U
L4875
DSCT
DB1S
DB2S
DB3S
DB4S
DB5S
DB6S
0.1
C4874
8V
0.1
C4721
560K
R4721
560P
C4844
680P
C4850
680P
C4856
0.001
C4733
0.001
C4740
0.001
C4741
0.001
C4742
0.001
C4743
0.001
C4744
0.001
C4745
0.1
C4890
0.001
C4735
0.001
C4746
0.001
C4747
0.001
C4737
0.001
C4749
0.001
C4748
0.001 C4753 0.001 C4760 0.001 C4761
0.001
C4755
0.001
C4762
0.001
C4763
0.001
C4764
0.001
C4765
0.001
C4757
0.001
C4766
0.001
C4767
0.001 C4773 0.001 C4780 0.001 C4775 0.001 C4781 0.001 C4782 0.001 C4777
0.001
C4783
0.001 C4796
820P
C4805
820P
C4799
680P
C4806
680P
C4804
820P
C4793
820P
C4832
680P
C4825
680P
C4826
680P
C4814
680P
C4815
820P
C4831
18P
C4858
18P
C4863
C4720
0.1
560
R4876
R4872
560
180
R4873
180
R4874
180
R4881
180
R4886
R4731
3.3K
R4871
180
R4709
180
R4732
120
R4736 120
L4706
100U
R4751
3.3K
R4752
120
R4756 120
L4732
2.2U
L4734
1.2U
L4736
2.2U
L4737
100U
L4731
100U
R4771
3.3K
R4791
3.3K
R4811
3.3K
R4841
3.3K
R4772
120
R4776 120
R4792
120
R4796
120
R4812
120
R4816 120
R4842
120
R4846
120
L4751
100U
L4757
100U
L4752
0.68U
L4754
0.27U
L4756
0.68U
L4871
100U
L4771
100U
L4777
100U
L4772
0.27U
L4774
0.18U
L4776
0.27U
L4791
100U
L4800
100U
L4792
0.27U
L4795
0.22U
L4798
0.27U
L4811
100U
L4821
100U
L4813
82N
L4816
82N
L4819
82N
L4841
100U
L4851
100U
L4843
0.18U
L4846
0.15U
L4849
0.12U
18P
C4817
10P
C4816
10P
C4821
18P
C4822
R4701
39K
R4702
39K
D4701
L709CEA
D4702
L709CEA
0.1
C4703
0.1
C4719
0.1
C4731
0.1
C4738
0.1
C4751
0.1
C4758
0.1
C4771
0.1
C4778
0.1
C4791
0.1
C4802
0.1
C4871
0.1
C4873
0.1
C4875
0.1
C4889
0.1
C4887
0.1
C4888
0.1
C4886
0.1
C4884
0.1
C4882
0.1
C4706
L4704
0.47U
L4705
0.47U
0.47U
L4707
150P
C4713
150P
C4723
270P
C4716
270P
C4718
68P
C4717
56P
C4722
0
R4844
0
R4794
0
R4774
0.22U
L4739
0.22U
L4758
22P
C4864
22P
C4867
68P
C4865
68P
C4866
68P
C4868
68P
C4869
0.1
C4812
68P
C4708
82P
C4709
18P
C4711
150P
C4710
82P
C4712
L4701
0.18U
L4702
0.27U
DB1S
DB5S
DB2S
DB1S
DB2S
DB3S
DB4S
DB5S
DB6S
DB6S
DB3S
DB4S
12 MHz band
16 MHz band
[DSC ANT]
8 MHz band
2 MHz band
6 MHz band
4 MHz band
MAIN UNIT(5/9)
MAIN UNIT(2/9)
MAIN UNIT(5/9)
MAIN UNIT(5/9)
MAIN UNIT(3/9)
MAIN UNIT(6/9)
Operating band Control voltage (V)
DSX-RX 2 MHz band
DB1S : 4.1
DB2S : 4.1
DB3S : 4.1
DB4S : 4.1
DB5S : 4.1
DB6S : 4.1
Any band is not selected.
0
DSX-RX 4 MHz band
DSX-RX 6 MHz band
DSX-RX 8 MHz band
DSX-RX 12 MHz band
DSX-RX 16 MHz band
3.3
6.3
2.6
Measuring condition: (unless otherwise noted)
• Frequency: 12.23 MHz
• Mode: J3E (USB)
• RX: No signal is received.
• TX: No modulation signal is applied.
• Waveforms are measured by
an oscilloscope.
Voltage notation:
RX
Unit: Volt
TX
RX
14V
8V
14V
Explanatory notes
TX Line
RX Line
Voltage Line