![background image](http://html.mh-extra.com/html/icom/ic-2730a/ic-2730a_service-manual_612051051.webp)
10-7
R:7.92V
6.75V
1.10V
1.76V
R:7.88V
7.09V
7.22V
3.38V
6.65V
3.02V
0.75V
2.38V
3.64V
6.41V
7.00V
4.03V
3.19V
0.73V
5.49V
0.73V
R:4.86V
R:0.62V
8.00V
7.25V
3.30V
4.99V
0.001
C925
4.7k
R732
15P
C906
47P
C939
5VS
L300
0.82U
L_R5
L_LV
0.001
C918
10k
R710
0.001
C951
L301
0.22U
0.001
C959
0.01
C971
0.001
C976
TC7S66FU
IC202
1
2
3
4
5
L_VR8
10k
R733
2.2
C928
V_LOOUT
C984
0.001
10k
R740
8V
10k
R734
0.001
C1054
0.3P
C1060
L_VVCOC
1k
R753
R755
4.7k
0.5P
C961
4.7k
R730
1k
R729
R741
47k
0
R860
0.1
C920
0.001
C963
LDTC144EE
Q202
L_PLLSW
0.001
C935
47k
R751
470
R747
R_PLLSTB
L316
47N
0.001
C909
L_VCOSHIFT
10
C936
0.001
C964
18P
C947
L_UR8
3P
C905
L_PLLSTB
R704
10
R705
680k
DMA501010
Q212
1
2
3
4
5
0.001
C922
C2012H
L305
10k
R749
10k
R780
0.001
C932
47k
R728
3VS
Q211
2SC5231A
10k
R735
L_2LO
L304
C2012H
C911
82P
Q210
2SC5231A
3.3k
R726
L_ULO
2SK880
Q201
15P
C950
270
R739
100
R862
PLLCK
Q215
2SC5108
0.001
C943
R765
22k
Q214
2SC5108
1M
R700
22P
C972
2SC5108
Q213
47
R742
0.001
C946
0.001
C940
470P
C921
1SS390
D206
4.7k
R754
1k
R731
L_UNLK
R744
47k
10k
R752
100k
R814
1P
C957
10P
C914
1SS390
D205
1k
R709
0.1
C912
0.001
C938
2SC4738
Q206
0.001
C937
0.001
C958
0.001
C917
10k
R718
0.22
C923
0
R714
Q200
2SC4738
0.001
C994
1U
L303
0.001
C965
0.001
C968
PLLDATA
1U
L302
L_UVCOC
0.001
C902
18P
C952
47k
R727
0.001
C941
0.001
C945
L306
C2012H
D207
L1SS400
27k
R707
18P
C953
C2012H
L307
390
R717
0.1U
L309
820
R719
0.22U
L311
1SV323
D228
22P
C992
39N
L310
47
R738
10P
C970
1SV323
D203
4P
C908
0.33
C930
R756
180
BBY57
D201
0.1
C926
0.001
C999
3P
C967
BBY57
D202
R757
4.7k
3.5P
C944
10P
C913
L_REF
10P
C949
0.001
C960
0.001
C1007
820
R743
0.1
C919
0.001
C927
1SV323
D204
0.001
C954
0.001
C991
2.2M
R812
47k
R708
0.001
C915
0.001
C907
C910
0.01
0.001
C942
AK1542A
IC201
1
CPVDD
2
TEST3
3
TEST1
4
LE
5
DATA
6
CLK
7
LD
8
PDN2
9
PDN1
10
REFIN
11
TEST2
12
GPO1
13
GPO2
14
DVSS
15
VREF
16
RFINN
17
RFINP
18
PVDD
19
BIAS
20
PVSS
21
CP
22
CPZ
23
SWIN
24
25
CR-994
X200
VCON
1
2
GND
3
OUT
4
VCC
3179
MP200
1
2
3
4
100k
R864
22k
R761
100
R711
0
R713
10k
R706
R712
22
2SC5108
Q240
10k
R879
0.001
C1124
MLK1005S
L313
0.001
C1125
0.001
C1123
10k
R881
120
R877
120
R882
3.9k
R880
3.9k
R878
1SS390
D208
D209
1SS390
R736
4.7k
R737
4.7k
LDTC114YE
Q208
LDTC114YE
Q209
L_VLO
2775
MP202
1
2
3
4
2.2k
R750
470
R748
15k
R745
4.7k
R746
R777
4.7k
L315
27N
47N
L347
5P
C988
22P
C997
D213
BAR88
D212
BAR88
560
R773
R775
4.7k
RUM002N02
Q205
RUM002N02
Q207
0.001
C1134
56
R716
1M
R702
820k
R701
10k
R703
0.001
C1138
0.1
C973
68k
R865
0.22
C989
100P
C977
1k
R763
3P
C1140
15N
L346
0
R848
8P
C1130
8P
C995
10
R849
39N
L351
0.001
C1132
L314
82N
0
R883
0
R884
0
R887
3P
C1143
3P
C1144
18N
L352
0
R715
560
R722
0.33
C924
0.001
C974
L1SS400
D342
LVCO
12.8MHz
*:
Refer to the PARTS LIST for the value and name of component.
• MAIN UNIT (6/8)