![background image](http://html.mh-extra.com/html/icom/ic-910h/ic-910h_service-manual_611499037.webp)
Nov. 2008
36
9V
14V
-5V
5V
IFS
-5V
14V
5V
9V
IFS
IC803
C815
C816
C814
R805
C813
6
5
4
3
2
1
Q805
IC801
C803
C826
C802
C801
R664
R665
R667
Q652
C662
C659
C660
R666
9V
AGCS
L653
R657
R658
R660
R661
R662
R663
C654
C657
Q651
FI651A FI651B
C661
C655
C658
R659
C656
L651
L652
P
A
R651
R652
R653
R654
D652
D653
D651
C651
J651
J652
R655
CP654
CP651
CP652
234 58
16
7
IC701
C701
CP653
C706
C709
D701
R702
R703
R704
R705
Q701
C723
C732
C708
L703
R751
R753
1 2
34
FI751
D751
D752
R754
C751
R752
R756
R757
D753
D754
6
5
4
3
2
1
Q751
C752
R755
C753
TXS
RXS
430M
144M
144S
430S
1F1S
Q831
C817
C818
R808
Q801
D804
R807
R822
D805
Q806
Q808
6
5
4
3
2
1
Q809
R824
Q816
D807
Q804
C821
C822
R811
R812
R813
R814
R815
D806
Q807
Q810
Q812
R816
Q811
C823
C824
R818
R819
Q815
Q813
VT9V
VUT9
UR9V
VR9V
VT9V
VUT9
VR9V
UR9V
C825
R820
R821
T9V
R9V
UT9V
144M
430M
144S
430S
TXS
RXS
R9V
T9V
UT9V
144M
144S
430M
430S
TXS
RXS
Q814
R864
Q852
R861
C869
R862
C872
R859
R857
C827
C819
L852
L853
R851
C828
Q851
R875
C840
C841
Q850
R842
R855
R843
R846
R845
L851
Q817
R762
D757
D758
6
5
4
3
2
1
Q752
C756
D762
D761
R761
R844
R841
C842
C843
CP752
1F2S
1FTS
C722
6
5
43
2
1
Q707
R759
R764
D755
D756
D759
R760
C754
C760
C721
R716
Q706
R758
R763
CP751
Q705
R712
R713
R715
6
5
4
32
1
Q703
R710
R711
C718
R714
C720
C719
C710
R706
R708
C713
Q702
R707
C711
L704
C716
R
S
I
S
N
S
Q
S
C758
C759
R767
R765
R766
C763
N
B
S
S
R769
6
5
4
3
2
1
Q753
C762
C903
C1877
AGCS
R871
C855
C851
C853
R852
C854
R854
D902
R907
R863
R869
R873
R874
C857
C856
C870
C859
R858
C871
Q901
C867
IFOUT 1
VCC 2
OSCIN 3
BASE 4
BASE
5 BASE
6 GND
7 COLECT
8
IC851
6
5
43
2
1
Q903
6
5
43
2
1
Q904
6
5
43
2
1
Q905
R912
R913
C862
C863
C864
C865
C913
C861
C866
Q902
D903
L854
R868
C911
C868
AGRS
AGFS
AGSS
1F1S
1F2S
1FTS
WNCS
NBSS
CENS
CTCS
AF1S
AF2S
SQLS
AGRS
AGFS
AGSS
AGCS
9V
1F1S
1F2S
1FTS
WNCS
CENS
CTCS
NBSS
AF1S
AF2S
SQLS
C910
R914
R916
R915
C912
OUTS
RFGS
NSQS
SMLS
DSSW
RFGS
NSQS
DSSW
R911
C909
-5V
5V
9V
C905
C906
C908
R906
R908
R910
C907
R909
C904
R1892
R905
D904
D905
CP854
5V
9V
SMLS
-5V
7
6
5
IC1804B
R903
R904
R1031
R927
C1031
R902
C
E
N
S
R1011
R1884
R1885
1
2
3
1
1
4
IC1804A
R967
R1889
R1883
R1886
C1878
C1879
R1890
C965
L951
C973
C964
C950
R971
R970
R969
C966
R952
C953
C954
C951
R951
X951
OSCIN 1
OSCOUT 2
MIXOUT 3
VCC 4
IFIN 5
DEC 6
FILOUT 7
FILIN 8
AFOUT
9 QUAD
10 IFOUT
11 RSSI
12 N-DET
13 N-REC
14 GND
15 MIXIN
16
IC951
C962
R961
C952
R953
R954
C955
C956
C957
C959
C958
FI511
R955
R957
R959
R956
R960
FI512
R965
R966
C960
D951
D952
C1009
C1010
R1015
R1014
C1026
R1042
R968
R1008
Q1001
R964
C1008
C1011
C1012
R1009
R1016
8
9
10
IC1001C
14
13
12
IC1001D
R1017
C1027 C1034
R1039
R1012
R1013
C1007
R1040
R1018
C1033
C1036
BFOS
GND
PLL
BFOS
1
2
3
4
J1051
AFIM
AFRP
AFIM
AFRP
AFS
AFIS
AFIS
R1048
C1016
R1044
1
2
3
1
1
4
IC1001A
C1017
R1043
7
6
5
IC1001B
C1028
R1046
C1029
C1030
R1047
-5V
R1037
R1038
C1023
X0
12
X1
13
Y0
2
Y1
1
Z0
5
Z1
3
INH
6
A
11
B
10
C
9
X 14
Y 15
Z 4
1
6
8
7
IC1002
C1025
C1024
Q1002
R1035
R1036
C1045
R1045
R1049
D1041
R1034
C1022
R1025
R1027
R1028
C1019
R1033
AFSS
AFTS
AFFS
S
Q
L
S
D
S
S
W
A
F
1
S
A
F
2
S
R1030
R1003
R1004
R1019
R1020 R1021
R1022
R1024
R1026
C1013
C1014
C1015
R1023
C1018
6
5
43
2
1
Q953
C1020
C1032
C
T
C
S
R1029
6
5
4
3
2
1
Q951
C961
R958
W
N
C
S
Q952
C963
MAIN UNIT (3/3)
*Refer to “
PARTS LIST
” for the parts name and value.
Summary of Contents for IC-910H
Page 1: ...SERVICE MANUAL ADDENDUM CONTENTS PARTS LIST 1 BOARD LAYOUTS 23 SCHEMATIC DIAGRAM 33 Nov 2008 ...
Page 26: ...Nov 2008 25 DISPLAY UNIT TOP VIEW The combination of top side and bottom side of this ...
Page 33: ...Nov 2008 32 MAIN UNIT BOT VIEW The combination of top side and bottom side of this ...
Page 41: ...SERVICE MANUAL VHF UHF ALL MODE TRANSCEIVER i910H ...
Page 118: ...9 2 BOTTOM VIEW RIT BOARD BOTTOM VIEW VR A BOARD BOTTOM VIEW VR B BOARD ...
Page 121: ...9 5 9 11 DISPLAY BOARD TOP VIEW 8 5 1 4 1 8 16 9 1 8 16 9 1 8 16 9 ...
Page 124: ...9 8 BOTTOM VIEW PA UNIT 1 3 4 6 1 3 4 6 ...
Page 126: ...9 10 BOTTOM VIEW PLL UNIT R341 MP11 ...
Page 130: ...9 14 BOTTOM VIEW UX 910 MAIN UNIT 1 4 8 5 ...
Page 144: ...1 1 32 Kamiminami Hirano ku Osaka 547 0003 Japan S 13714HZ C1 2001 Icom Inc ...