Icom IC-910H Service Manual page 35

Nov. 2008
MAIN UNIT (1/3)
FRONT
J1101
1 1 1 1 1 1 1 1 1 1 2 2 2 2 2 2 2 2 2 2 3
1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0
G T 1 P 1 1 1 4 1 A 1 F O P P ++ V A E M M S R T I I G
N
N E 2 O 2 4 2 3 2 L 2 O P D C O V T D C C X X N N N
5 9 C
D M P W S P U P D C P R B A K X X O A K O S S T T D
V V
P V S T V L V S L S L 1 T L L N T N M S
NC
CP1129
CP1151
|
CP1164
CP1101
|
CP1113
1
2
3
CP1114
| 4
1
MAIN-BAND 2 CP1127
U
M
P
D
14V
A
9V T
5V
-5V
R9V
R9V
T9V 14V
T9V
9V
-5V
AGRM 5V
AGRM
AGFM MCK
AGFM
AGSM DATA
AGSM
MDTC
RFGM MCKC
RFGM
1 1 V R 4 4 U E P M
4 4 P B 3 3 P X A U
P
4 4 R D 0 0 R T S T
1F1M A
1F1M M S I S M S I G T M
S
1F2M C1461
1F2M T C1451
1FTM
1FTM
IC1461
WNCM IC1451 1 1
WNCM
6 6
TCWM Q1 4 1 Q1 4
TCWM 1 STR . STR
NBSM 2 Q2 5 2 Q2 5
NBSM D D
3 CLK Q3 6 3 CLK Q3 6
OPB1 15 Q4 7 15 Q4 7
OPB1 OE OE
Q5 14 Q5 14
12PV
12PV Q6 13 Q6 13
12UL Q7 12 Q7 12
12UL
12DS
Q8 11 Q8 11
12DS
12PS
12PS
QS 9 QS 9
12ST
12ST
QS 10 QS 10
.
SMLM
SMLM
8 8
NSQM
NSQM
CENM
CENM
CTCM
CTCM
OUTM
OUTM
5V
DSSW D
DSSW
R
E
12UP
12UP S
PCK
PCK
PDAT
PDAT
DRES
DRES
KDS
KDS
ALC
ALC
SSBI
SSBI
MODO
MODO
AF1M
AF1M
AF2M
AF2M
SQLM
SQLM
12TP
12TP
D D S P M S D
AFM 1 P P A A U 0
AFM
S S S S S S S
S M
T T T T T T T
1FOR C D
1FOR
O A
N T
RXS
C1511
RXS
TXS
TXS
IC1511
1
6
1 Q1 4
STR .
2 D Q2 5
MCK 3 Q3 6
CLK
IFS 15 Q4 7
IFS OE
Q5 14
AFIM Q6 13
AFIM
AFIS Q7 12
AFIS
Q8 11
2355IFM.SCH
QS 9
QS 10
8
R1512 R1515
R1513 R1516
R1517
R1514
R1518
SUB-BAND
AFIM
AFIM
AFIS
AFIS
AFS
AFS
14V
14V
9V
9V
5V
5V
-5V
-5V
MCKC
IFS MDTC
IFS
AFRP
AFRP
D I
R N
E T
144M
144M S M
430M J1771
430M
144S
144S 10 R1771
430S R1772
430S 9
OPT
R1773
8
TXS
TXS 7 R1774
RXS R1775
RXS 6
U
5
VR9V
VR9V 1 5 4
T
UR9V
UR9V 2 3 R1776
VUT9
-
VUT9 3 2
VT9V
VT9V 4 6 1 C1771
1
UT9V
UT9V
T9V
T9V
J1751 0
R9V
R9V
6 P1771 W1771
CENS
CENS 1
CTCS
CTCS 2
NSQS
NSQS 3
4
AGRS
AGRS
AGFS
AGFS
AGSS P1781
AGSS
4
NBSS OPT
NBSS 3
2
1F1S
1F1S 1
1F2S
1F2S
W1781
1FTS U
1FTS
T
WNCS
WNCS 1 5
J1781
|
2
R1781
3 10
1 R1782
4 6 9
R1783
0 8
SMLS R1784
SMLS J1761 7
6 R1785
6
OUTS
OUTS 5
4
RFGS
RFGS 3
R1786
2
DSSW
DSSW 1
C1781
AF1S
AF1S
AF2S
AF2S
S
I
T
N
SQLS
SQLS
2355IFS.SCH
P1201
FRONT
1 2 3 4 5 6 7
J1151
1 1 1 1 1 1 1 1 1 1 2 2 2 2 2 2 2 2 2 2 3
1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0
W W W W W W W
1 1 1 1 1 1 1
2 2 2 2 2 2 2
0 0 0 0 0 0 0
1 2 3 4 5 6 7
G T - O M C S N S A C B C S N S A C K S D D A S M P D C C G
W1206
N O 5 V S T M S Q G E E T M S Q G E D B O A T E I T R I I N
D N V D C C L Q L R N E C L Q L R N S S T S X N U T E V V D
E V S S S S S S P M M M M M M Y H S D D 1 S E
J1251 J1201
1 2 3 4 5 1 2
M S P 1 H M M
S S H 4 V I I
P P G V C C
O O E
IC1101 CP1165
CP1202
8 |
7 CP1177
6
5
CP1201
CP1251
C1101 T
| E
M R1301
CP1255
P
14V
9V
-5V
5V
MCK
DATA
M P P P D C C 1 1 1 N W A A T S 1 1 1 N W A A D M
U C H I 9 W O F F F B N G G C U F F F B N G G C A
M
T O C F 6 V M 1 2 T S C S F W S 1 2 T S C S F O S
A
S N O S R S M M M M M M M M T S S S S S S S N T
S
C1481
T C1471
IC1471 IC1481
1 1 IC1491
6 6
1 Q1 4 1 Q1 4 1
STR STR . STR .
2 Q2 5 2
2 Q2 5
D D D
3 Q3 6 3
3 CLK Q3 6 CLK CLK
15 Q4 7 15 Q4 7 15
OE OE OE
Q5 14
Q5 14
Q6 13
Q6 13
Q7 12 Q7 12
Q8 11
Q8 11
R1461
R1462 QS 9 QS 9
R1463 10 QS 10
R1481
QS . .
R1465 8 8
R1466
R1467
R1468
D1608
A T
L 9 R1621
C V
L
R1605
R1618
R1620
C1601
R1606
IC1601C
R1608
9
R1603
8
D1610
10
4 C1603 R1601
2
R1602
1 R1607
3
IC1601A
1 R1625
R1611
1
D1602
IC1601D
13
R1604
14
12
R1624
C1604
R1643
R1612 R1614
R1613
D1603
CP1631
R1631
R1633
R1693
D1601 6
R1630
7
R1645
5
R1622 R1634
IC1601B D1609
C1631
R1637
C1602
R1629
R1627
1
4
4
M
DATA
14V
9V
5V
-5V
MCK
I D D D S UT-102 S S
N P S S B P I
T S P P S S V
S T M S Y T R
CP1803 CP1805 CP1804
CP1801 CP1802
C1872
J1801
R1801
R1802 1 2
BUSY
3 4
SPCE C1803
5 6
GND SPCH
7 8
C1801
R1876 R1809
R1808
CP1807 CP1808
IC1802
C1802 C1811
C1809
1 9
6
J1802 R1803
W1772
DSOM 14 X0 12 10
1 X
.
GND X1 13
2
15
GND
3 Y
DSOS Y0 2 R1824
4 R1807
4 Y1 1
Z C1814
W1782
R1816
Z0 5
Z1 3
R1805 C1810
R1804 6
INH 6
A 11 5
R1806 B 10 R1810
C1829 C 9 IC1807B
. .
R1817
IC1652B
8 7
C1812
6 C1831
7
R1831
5 M D
C1807
S S R1825
A
R1833 C S A
W F
2
C1830
R1832 C1808
C1828
R1829
R1830
PA PA
J1351
J1301
1 1 1 1 1 1 1 1 1 1 1 1 1 1
1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6
V V 1 G V H V V U G V B V I I N 1 1 U + U U V U U V P F R 4 N G
U T 4 N T V R A T N P A T C C C 4 4 T 5 P T U R A U O O E 3 C N
CP1401
T U P D 9 9 T U D R N U L H 1 V V U V R 9 M 9 T T W R F P 2 D
P 1 V V V T 2 I D 2 1 I V S V T 9 S V
CP1402
CP1301
| CP1351
CP1306 |
CP1364
D1301
D1351
C1301
CP1307
| 1 4
CP1314 4 3
1
4 0
2
M S
T
P
C1522
R1591
V V U U R1595 R R M A
T T T T F F I L
U U U U G G C U
D D D S A A A A 4
1 2 1 2 M S V D
S S S T F F F F 2 9
P P S L 1 2 1 2
1 8
M S W S M M S S
C1491 3 10
R1524
IC1522A
1 IC1522C
R1596
1
1 R1592 IC1521
6
10 VDD
C1523
Q1 4 9
AO10
Q2 5
8
R1523 AO9
Q3 6
7 AO8
Q4 7 R1597 6
R1593 AO7
Q5 14
5
AO6
Q6 13 4
AO5
Q7 12 6 13 3
R1522 AO4
Q8 11 7 14
2
AO3
5 12 1
R1491 VSS
QS 9
R1492
QS 10
R1493 IC1522D
R1521 IC1522B
R1598
R1594
8 R1494
R1495
R1496
SSBI
9V
5V
AALC
T
R1651 O
R I I
N
E C C
E
F H L
R1647
C1652
IC1651A R1649
C1654
R1650
R1648
8 R1654 R1658
R1660
3
1
C1651 R1655
R1609 2
IC1651B
C1656
4 C1653 5
R1659
7
R1656
6
C1678
R1661
R1615
R1652
R1657 C1655 C1680
R1616
C1677
R1653
C1665
R1672
IC1807D
R1676
13
14
12
R1636 R1671
C1667
R1674
R1638
R1673
4
IC1652A
R1668
C1662 2
D1605
1
3 R1675
C1605
1
1
D1606
C1663
R1639 C1672
P F F 1 O
O O O F V
C R R O D
V L R R1688 V
D1607
C1664
14V
9V
5V
-5V
C1821
R1823
R1874 R1814
R1821
R1822
R1834
M C1836
4 R1818 O
C1832
D
2 R1815
I
1
3
1 R1875
R1835 C1833
1 R1872 C1873
D1821
IC1807A
D1822
R1871
C1874
C1839
C1871
1 2 2 2 2 2 1 1 1 1 1 1 1
IC1801 R1894
6 4 3 2 1 0 9 8 7 6 5 4 3
C1840
14 X0 12
X . V V V V G R V D V V V V
8 X1 13
I O O I N E D O I O O I
15 N U U N D S A N U U N
Y
IC1807C 8 T T 7 E R 6 T T 5
Y0 2
IC1803
4 Y1 1 8 7 T E 6 5
Z F
V V V V R1842
Z0 5 V O O V V O O V
Z1 3 I U U I V C I U U I
N T T N D L L D N T T N
1 1 2 2 D D K I 3 3 4 4
INH 6
A 11 1 2 3 4 5 6 7 8 9 1 1 1
D1802 0 1 2
7 B 10 C1847
C 9
. .
S
R1812
8 7 T
L
C1848
S
C1813 R1826
C1822
R1893 C1823
C1804
A S E E D
A I T T 1
B
F K O O S
R1811 E
1 R1813 O T N T R1852
E
P
D1801
R1561
KEY
OUTM
J1401 Q1561
4 3
SQLM 5 2
6 1
PTT1
C1401 C1402
OUTS
1
IC1552
6
12 X 14
X0 .
13
X1
REMOTE Y 15
R1571 2
Y0
Z 4
1
J1403 Y1
5
Z0
3 Z1
Q1571
4 3 6
INH
11
A
SQLS 5 2 10
B
D D C C C1404 9
C . .
A O I I 6 1
S T V V
H E 7 8
14V
-5V
5V
1 1
IC1531 IC1551
6 6
V U D P B A S M
A A 0 O A T E I 14 X0 12 12 X 14
X . X0 .
T T S C N X N U
X1 13 13
T T T V D S D D X1
15 Y 15
Y
Y0 2 2
Y0
4 Z 4 Q1581
Y1 1 1
Z Y1
Z0 5 5
R1525 Z0
Z1 3 3 Z1
INH 6 6
INH
VCC 11
A 11 11 A
AO11 12 B 10 10
B
AO12 13
C 9 9
. . C . .
DO 14 R1526
LD 15 8 7
7 8
CLK 16
DI 17
AO1 18
A R
AO2 19 C1531 C1551
E D D A A
L B
GND 20 X 9 C A A
U D
T 6 O F F C1552
D S
G S N 1 2
C1532
C1521
SEND
9V
R1531
AALC
1 S R1704
7 S
5 B
R1665
0 I
C1701
R1705
R1708
C1657 Q1651 R1666
R1734
R1701
R1686 R1706
R1662
IC1654B
R1664 C1660 C1704
5
7
C1658 6
R1707
C1659 R1667 C1675
R1600 C1703
R1663
C1702 R1709
R1703
C1671
R1690 IC1653
R1691 R1702
1
C1724
6 C1705
R1733
14 X0 12
X .
R1677 X1 13
R1681
C1666
15
Y R1712
R1692
Y0 2
4 Y1 1
Z
8 C1707 R1711
R1679 C1669
3 Z0 5
D1652
1 Z1 3
2
R1714
INH 6
4 R1678 A 11 R1715
IC1654A
B 10
R1710
C 9 D1701
C1668 . .
C1708
C1674
8 7
C1723
R1689
R1682
9 R1735
C1670 R1680
8
10
IC1652C
C1676
R1685 C 1 S S P
- W F I I I C1706
V T V K F
5
R M R O
V
E S
T I
O T
T N
IC1652D
13
14
12
IC1852
R1840
R1847 C1825
C1838 R1844
C1837
12 345 67 891 0 1
IC1806
R1848
IC1808
R1841
1 VCC 10
VCC2
2 VCAOUT 9
IN+ 1
R1838
3 CTL 8 6
IN-
4 VCAIN 7 X 14
C1844 R1849 12
OUT X0 .
5 NC 6
GND 13 X1
Y 15
R1839
2
R1846 Y0
Z 4
1 Y1
R1861
R1895
R1850 5
C1841 R1843 R1845 Z0
C1842
3 Z1
C1843 R1896
C1846 C1845
6 INH
11
R1854 A
10
B
IC1809
9 C
R1851 . .
1 VCC 10 C1852 R1859
VCC2
2 VCAOUT 9 7 8
IN+
3 CTL 8 R1856
IN-
4 VCAIN 7
OUT
5 NC 6
R1857
GND
R1864 C1856
C1850 C1855
R1858 R1865
C1849 R1853 C1851 M M P
C1827
U U C R1862
R1855 T T O
M S N
*Refer to "PARTS LIST" for the parts name and value.
34
DATA1
CP1566 CP1564
(TX/RX)
J1561
L1561
SQL AF
DOUT PTT
L1562
L1563
DIN
L1564
C1561
L1565
C1565
CP1563 DATA2
CP1561
CP1565
C1562 C1564 (RX ONLY)
J1571
C1563
L1571
SQL AF
DOUT PTT
L1572
CP1576 CP1574
DIN
C1571
L1575
C1575
CP1575
ACC
R1581
C1572
CP1586 CP1587 CP1588
J1581
L1581
SQL L1582 SQL 6
13.8V 7
1
L1583 ALC 8
L1584 SEND 3
MOD MOD 4
L1585
C1555 L1586 GND 2
5
AAF AF
L1587
C1584 CP1583
CP1582
C1583
CP1585
CP1584
C1587
C1585
C1586
Q1583
Q1582
R1583
Q1584
R1582 C1582
C
W C1581
V
R
M C S M A V
I O S S V O
C M P P X X
V S O O L L
R1723 R1725
R1720
R1722
R1724
R1719
C1712
R1721
C1711
C1710
R1726
R1717
C1714
IC1701
12 NC 13
VCC
11 AVI 14
SWC
10
VCAC AVO 15
R1713 9 MUTE 16 C1713
VCAO
R1727
8 VOXO 17
VCAI
7
SWO VOXI 18
6 BU2O 19
BU1O
5
BU1I BU2I 20
4
SWI AMPO 21 C1715
3 AMP- 22
CMPO
2
CMPI AMP+ 23
1
NC GND 24 R1728
C1717
R1718
C1721
C1716
R1732
C1709
R1731
C1720
R1716
C1722
MICE
R1729 R1730
MIC
R1700
C1718 C1719
L1851
PHCO
P M S
R1897
H S S R1898
G P P
O O
RL1851
D1851
L1852
Q1855
C1867
1
1 2
C1880
C1859
C1881
MAIN-SP
C1860
J1851
EXSPM
C1861
C1864
INSPM INSP
GND
SUB-SP
C1862 C1865
J1852
EXSPS
C1863 INSPS
GND
R1866
INT-SP
R1867 L1853
C1858
J1853
SP
1 3
SPE
C1870 2
R1869 4
L1854
MP1851