![background image](http://html.mh-extra.com/html/icom/ic-718/ic-718_service-manual-addendum_612206121.webp)
Oct. 2008
17
P5
CHASSIS WS3
P1
W6
W7
C306
0.0047
R303
1k
C158
0.0047
L153
4.7H
C204
0.0047
C154
0.0047
R152
150
L152
100H
C202
0.0047
C203
0.1
L201
10H
T8
R202
15
8V
R104
100k
R105
1k
L104
100H
C108
0.1
R102
100k
C109 0.1
C110
0.1
C151
0.0047
R151
100
T8
L105
LR-358
R101
100
C2
0.1
R4
15
RX
R6
18
R5
270
Q701
DTC114EE
C701
0.1
C702
0.1
L701
100H
L702
100H
L801
100H
C801
0.1
L703
100H
J701
C703
0.1
C1
0.1
C704
0.1
R703
270
R701
390
R704
390
R705
470
ATT8
4
3
1
2
D701
1SV312
L1
100H
C4
100p
1
4
6
2
3
5
IC1
PC2709T
C3
0.1
R7
270
L2
0.22H
MP1
C823
220p
C833
270p
C101
68p
L101
0.22H
C103
150p
C105
82p
L102
0.27H
L103
5.6H
Q101
3SK131
R103
100k
Q102
3SK131
C111
7p
R106
22k
C112
0.1
L106
LS-483A
C153
0.0047
R801
470
R821
22
R823
22
L821
5.6H
R822
47
R824
470
C822
0.0027
C824
0.0022
L822
6.8H
L832
2.7H
L831
100H
L833
3.9H
C837
0.0027
L835
4.7H
C839
0.0015
L836
5.6H
L802
330H
R802
470
C901
0.1
L901
100H
C902
0.1
R901
470
R904
10k
R1404
10k
R902
220
D806
MA77
D813
MA77
D901
MA77
D903
MA77
L151
LS-484B
C821
1
C102
47p
C104
22p
R108
4.7k
R107
2.2k
PROF
B0
4
3
1
2
D802
1SV312
C106
0.0033
C107
0.0027
W801
C113
10p
L100
0.47 H
C100
82p
C152
12p
1st Lo
C155
0.0047
R153
3.3k
R156
1k
R155 332KC C156
0.0047
C157
0.0047
R154
1k
C205
0.0047
L202
0.22H
R205
56
R301
1k
R903
1k
C904
0.1
L902
0.18H
R1001
47k
Q1001
2SA1576
R1002
1k
Q1002
DTC114EE
C1101
0.0047
L903
0.27H
C906
10p
C905
150p
C907
82p
R1103
680
C1102
0.1
R1105
680
Q1101
2SK1740
Q1102
2SK1740
Q1103
2SK1740
L1104
100H
R1107
47
C1106
0.0047
Q1104
2SK1740
L1103
LS-483A
Q151
2SK882
D201
MA77
D202
MA77
D904
MA77
D304
MA77
C301
0.0047 D301
MA77
C1103
0.1
L1101
LR-358
1
1
2
1 2
2
J201
PLL unit J4
PLL unit
WS1A
P3
P4
D902
MA77
L904
0.33H
L1102
LR-403
C201
470p
8V
R13V
14V
R8V
C1105
0.1
R201
1k
R206
10
C206
220p
R204
680
Q201
2SC4673
R203
4.7k
R1102
100
C1104
3p
R1101
1k
C1001
0.1
1LO
1LOE
1LO
1LOE
R1208
100
L302
LS-483A
C305
0.0047
R302
1k
R1108
1k
R1201
1k
C1201
0.0047
L1201
LS-484B
C1202
0.0047
C1203
0.1
R1204
1.8k
C1204
0.0047
C1209
0.0047
R1206
150
C1205
10p
C1206
0.0047
C1207
0.0047
R1209
1k
D302
MA77
D303
MA77
D306
MA77
D305 MA77
L303
LS-540
L301
LS-540
L1202
LS-484B
AGC
W1202
C1108
0.1
R1202
5.6k
FI301A
FL-315
FI301B
FL-315
C1208
10p
C302
6p
C303
6p
C304
6p
Q1201
3SK131
R1207
2.2k
R1205
1M
A
GRS
D1801
1SS375
C1509
0.1
R1510
470
L1503
330H
C1508
330p
R1509
3.3k
C1510
0.1
D1501
1SS375
R1511
100k
C1511
470p
R1513
47k
Q1504
2SC4081
R1514
47k
R1515
330
R1516
2.2M
C1512
1
R1806
1M
14
13
12
IC1701D
NJM2058
C1801
0.0047
R1801
1k
Q1503
2SK882
R1805
100k
R1755
1k
SM
ALM
NBLV
CP1501
6
5
4
3
2
1
Q1801
UMD6
R1802
2.2M
R1803
1.8M
R1804
220k
R1523
47k
R1518
1k R1517
3.9k
Q1505
2SA1576
D1510
MA2S111
R1403
4.7
L1402
LR-397
C1404
0.1
R1501
47k
C1501
0.1
R1502
470
R1503
100
R1504
22k
C1504
0.1
R1505
470
C1505
0.1
R1506
100
R1508
27k
R1507
100
C1507
0.1
R1703
100k
R1709
100k
R1708
220k
R1710
2.2M
8
9
10
IC1701C
NJM2058M
R1711
330
C1704
0.0047
Q1703
2SA1576
R1713
2.2M
C1502
0.1
D1704
DAP202K
Q1501
2SK882
Q1502
2SK882
L1501
LS-450
L1502
LS-450
C1405
22
Q1402
2SK2171
Q1401
2SK2171
C1751
0.1
R1752
2.2M
R1751
820k
ALC
Q1705
DTC114EE
C1707
10 C1608 6.3V B
C1708
0.1
3
2
1
4
8
IC1751A
NJM2904M
R1754
470k
C831
0.1
R831
470
C834
0.001
C838
0.012
R832
470
R833
470
C840
0.1
L842
2.2H
L841
100H
L843
2.2H
C841
0.1
R841
470
L852
0.82H
L851
100H
C851
0.1
R851
470
L853
1.2H
C853
68p
C854
270p
C855
0.0012
C856
0.0056
L855
1.5H
L854
1.8H
R852
1k
C858
0.1
L861
100H
L862
1.2H
L863
1H
C863
56p
C865
680p
C866
0.0027
C867
330p
L865
1.2H
C832
0.0018
C842
0.0012
C852
470p
R1401
220
L1401
LR-86
C1401
0.1
C1402
0.1
R1402
22
D807
MA77
D808
MA77
D803
MA77
D810
MA77
D814
MA77
D815
MA77
D804
MA77
D811
MA77
C843
56p
C844
680p
C845
560p
C846
150p
FOR
POCV
PRON
B1
B2
B3
ATT8
R1729
10k
C857
680p
R842
470
D1707
MA2S111
D1706
MA2S111
L813
100H
L814
100H
C811
0.1
C816
0.1
C803
0.0047
C812
0.047
L811
4.7H
C813
0.0015
L812
3.3H
C815
0.0027
C817
0.0047
C814
0.0047
4
3
1
2
D801
1SV312
C861
0.1
R861
470
C864
330p
L864
0.82H
R862
1k
C868
0.1
L871
100H
L872
0.47H
C871
0.0047
R871
470
L873
0.56H
C873
56p
C874
150p
C872
270p
C862
330p
C875
470p
C877
220p
C876
0.0015
L874
0.68H
L875
0.82H
L881
100H
L882
0.39H
L883
0.39H
C881
0.0047
R881
470
C882
220p
C883
33p
C884
120p
C885
270p
C886
0.0012
L884
0.47H
C887
150p
L885
0.56H
C888
0.0047
C878
0.0047
R882
1k
L892
0.27H
C899
33p
L893
0.27H
C895
220p
C897
100p
R1706
330
C2401
0.047
R2401
100k
R872
1k
D805
MA77
D809
MA77
D812
MA77
D816
MA77
ICH
ICL
REF
BEPI
AMS
B4
B5
B6
AMS
Q1706
DTC114EE
D1701
MA8043H
D1702
MA8051M
D1703
MA2S111
1
2
3
11
4
IC1701A
NJM2058M
R1707
100K
R1725
100k
7
6
5
IC1701B
NJM2058M
R1712
100k
R1714
560k
R1716
470
R1717
47k
R1718
47k
R1719
33k
R1720
10k
R1721
33k
C1702
0.1
C1701
0.1
R1723
470
C2103
0.1
1
2
3
11
4
IC2101A
NJM2058
R2402
100k
R2403
47k
C2403
0.001
7
6
5
IC2101B
NJM2058M
D1705
DAP202K
R2101
470
R2108
470
C1752
0.1
C2101
1
EALC
C2405
0.1
R1722
1M
R1715
33k
R1730
100k
C1706
2.2
W1726
R1724
10k
W2101
C2102
0.1
R2105
47k
1
2
3
4
5
6
7
8
IC2102
TC4W53F
R2106
47k
C2107
0.1
R2107
47k
R2201
1k
R2202
10k
R2203
10k
R2208
10k
C2207
0.047
R2210
4.7k
R2701
4.7k
R2703
100k
C2702
330p
R2704
100k
R2104
47k
D2101
MA2S111
C2202
0.1
R2225
220
C2201
47
R2102
10k
R2103
10k
SQLS
AV
X
PHO
VO
X
MIC
MICE
C2104
0.0022
C2105
0.0022
C2206
0.1
C2209
1
T8V
8V
5V
14V
R3302
330
R3303
560
C3302
0.1
VSS
1
AO3 2
AO4
3
AO5
4
AO6
5
AO7
6
AO8
7
AO9
8
AO10
9
VDD
10
VCC
11
AO11
12
AO12
13
DO
14
LD
15
CLK
16
DI
17
AO1
18
AO2
19
GND
20
IC3301
M62352GP
R2702
470
C2701
10
C3301
0.1
R4101
1k
NBLV
RFGV
AFGV
MIGV
BAND
POCV
PAT
FANV
R3202
100k
R3101
4.7k
Q3101
DTC114EE
R3201
100k
8
9
10
IC2101C
NJM2058
R3203
470
C3005
0.1
STR.
1
D
2
CLK
3
OE
15
Q1
4
Q2
5
Q3
6
Q4
7
Q5
14
Q6
13
Q7
12
Q8
11
QS
9
QS
10
16
8
IC3006
BU4094BCF
R4007
4.7
BEPO
BEPO
MST
MDA
MC
AGRS
AGMS
AFS
AFMS
COMS
2N3K
R3011
R3012
R3013
2NTH
2NOP
T8V
R8V
R8V
DRE
MDA
MC
AST
BANV
BEPV
BEE
BEPI
AMS
AGSS
NBS
PAT8
PAT
8
ATT8
R4001
4.7
R4002
4.7
R4003
4.7
R4004
4.7
R4005
4.7
R4006
4.7
R3102
4.7k
C3101
0.1
R2406
4.7k
R2407
4.7k
C3003
0.1
IN1
1
IN2
2
IN3
3
IN4
4
IN5
5
IN6
6
IN7
7
IN8
8
VS
9
O1
18
O2
17
O3
16
O4
15
O5
14
O6
13
O7
12
O8
11
GND
10
IC3005
TD62783AF
C891
0.0047
R891
470
L891
100H
C892
120p
C893
39p
C894
68p
C896
820p
L894
0.33H
L895
0.39H
R892
1k
C898
0.0047
C3004
0.1
STR
D
CLK
OE
Q1 4
Q2
5
Q3
6
Q4
7
Q5
14
Q6
13
Q7
12
Q8
11
QS 9
QS 10
.
16
8
IC3004
BU4094BCF
IN1
1
IN2
2
IN3
3
IN4
4
IN5
5
IN6
6
IN7
7
IN8
8
VS
9
O1
18
O2
17
O3
16
O4
15
O5
14
O6
13
O7
12
O8
11
GND
10
IC3002
TD62783AF
B7
MDA
MC
FST
B7
B6
B5
B4
B3
B2
B1
B0
2S3K
2STH
2SOP
PROS
PRES
ATTS
TX
RX
DRE
14V
IFS
B0
B1
B2
B3
B4
B5
B6
B7
C2402
0.0047
D3002
DAN202K
C3007
470
FANV
CARR
KDS
TX_
C3001
0.1
STR
1
D
2
CLK
3
OE
15
Q1
4
Q2
5
Q3
6
Q4
7
Q5 14
Q6 13
Q7 12
Q8
11
QS
9
QS
10
16
8
IC3001
BU4094BCF
D3001
DAN202K
R3003
47k
R3004
47k
R3005
47k
R3006
47k
R3007
47k
R3008
47k
R3009
47k
R3010
47k
MDA
MC
BST
B0S
B1S
B2S
B3S
B4S
B5S
B6S
B7S
DRE
PR
OS
PRES
R3001
47k
FAN
CHASSIS
C3002
0.1
IN1
1
2
3
4
5
6
7
8
9
IN2
IN3
IN4
IN5
IN6
IN7
IN8
VS
O1
18
O2
17
O3
16
O4
15
O5
14
O6
13
O7
12
O8
11
GND
10
IC3003
TD62783AF
R3002
47k
W3601
C3601
10
R3601
1k
14
13
12
IC2101D
NJM2058
R3603
100k
D3701
DAN202K
R3701
4.7k
R3702
470
1
2
3
J3601
MF1
SB0812H-ICOM-00
1
2
3
Q3601
2SD1664
PR
ON
PR
OF
FAN+
FAN–
L3
L5
L4
L2
L1
L6
C3702
3.3
R3602 330k
C3602
0.1
C4101
0.0047
C4102
0.0047
C4103
0.0047
C4104
0.0047
Q3801
DTC114EE
Q3802
DTA114EE
C3801
0.0047
Q3701
DTC114EE
Q3702
DTA114EE
10
9
8
7
6
5
4
3
2
1
J4001
CP4002
CP4001
R3703
RV-109
R3704
1k
CP3701
C4003
0.1
C4005
0.1
C4009
0.1
C4008
0.1
C4007
0.1
C4006
0.1
C4107
0.0047
C4106
0.0047
C4105
0.0047
POWS
J4101
R4102
100
GND
GND
GND
PWS
14V
14V
14V
14V
14V
14V
ICL
PAT8
ICL
PAT8
ICH
HV
STRT
KEY
ICH
HV
STRT
KEY
TEMP
16
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
WCNT
L6
L1
L2
L4
L5
FOR
L3
REF
L6
L1
L2
L4
L5
FOR
L3
REF
GND
T13V
T13V
–
+
–
+
+
+
C3006
470
+
+
M
+
+
+
–
–
+
–
+
–
+
–
+
–
+
–
+
+
+
+
+
+
–
+
SSBAF
AFS
AMAF
1
2
3
15
R3011–R3013
220
5
6
7
IC1751B
NJM2904M
–
+
OPTION
UT-106
1
2
3
4
5
6
7
8
J2501
R2501
47k
W2501
MDA
SST
SBS
SPCE
SPCH
5V
GND
MC
C2501
0.1
R2601
1k
R2602
1k
R2603
1k
R2604
1k
R2605
1k
R2606
1k
DRE
DIN
DSS
MC
DSP
MDA
1
2
3
4
5
6
7
8
9
10
J2603
W2602
W2601
1
2
J2601
C2601
0.1
R2607
100k
SPCO
C2602
3.3
OPTION
UT-102
C2502
0.1
1
2
3
4
J2602
DOUT
DOE
NC
NC
DOUT
DOE
DOUT
DOE
DOUT
DOE
NC
NC
1
2
3
4
P2601
SPCO
+
PAI
J1
R2
18
R1
270
R3
270
C5
82p
Tx: 2.4V
Rx: 0V
While rotating the fan: 8.4V
While stopping the fan: 0V
Tx: 0.8V
Rx: 0V
Tx: 3.5V
Rx: 0V
Tx: 3.5V
Rx: 0V
Tx: 6.3V
Rx: 0V
Tx: 0V
Rx: 3.5V
Tx: 2.6V
Rx: 0V
1.5V
5.5V
Tx: 0V
Rx: 3.6V
7.6V
ATT ON: 6.6V
ATT OFF: 0V
Tx: 12.5V
Rx: 0V
CW ON
KEY UP: 0V
KEY DOWN: 8.0V
*LINE ON: 5.2V
LINE OFF: 0V
PRE ON: 0V
PRE OFF: 7.5V
PRE ON: 11.7V
PRE OFF: 0V
PRE ON: 1.0V
PRE OFF: 0V
*LINE ON: 6.4V
LINE OFF: 0V
*LINE ON: 5.1V
LINE OFF: 0V
*LINE ON: 6.4V
LINE OFF: 0V
*LINE ON: 7.0V
LINE OFF: 0V
*LINE ON: 7.0V
LINE OFF: 0V
*LINE ON: 7.5V
LINE OFF: 0V
*LINE ON: 7.0V
LINE OFF: 0V
*LINE ON: 7.0V
LINE OFF: 0V
*LINE ON: 7.0V
LINE OFF: 0V
*LINE ON: 7.6V
LINE OFF: 0V
*LINE ON: 6.6V
LINE OFF: 0V
4.8V
Tx: 1.7V
Rx: 0.7V
8.0V
0.8V
13.1V
*LINE ON: 6.5V
LINE OFF: 0V
*LINE ON: 6.5V
LINE OFF: 0V
*LINE ON: 6.5V
LINE OFF: 0V
*LINE ON: 6.5V
LINE OFF: 0V
0V
0.8V
0.8V
0V
0V
0V
Tx: 0.5V
Rx: 0.6V
Tx: 5.6V
Rx: 6.0V
Tx: –1.5V
Rx: 7.6V
Tx: 3.2V
Rx: 0V
Tx: 1.8V
Rx: 2.6V
Tx: 0V
Rx: 7.3V
Tx: 0V
Rx: 6.5V
Tx: 5.2V
Rx: 5.7V
Tx: 0.5V
Rx: 4.9V
8.0V
8.0V
3.9V
NOTE:
*LINE ON and LINE OFF
Each line is ON when the frequency
is displayed in the table below .
*LINE
name
B0
B2
B3
B4
B5
B6
B7
Display frequency
(MHz)
0.03 – 1.59999
2.0 – 3.99999
B1
1.6 – 1.99999
4.0 – 7.99999
8.0 – 10.99999
11.0 – 14.99999
15.0 – 21.99999
22.0 – 29.99999
Voltage (V)
7.4
6.0
5.0
0
4.0
3.1
2.2
Display frequency (MHz)
Voltage (V)
Display frequency (MHz)
0.03 – 1.99999
2.0 – 3.99999
4.0 – 7.99999
8.0 – 10.99999
11.0 – 14.99999
15.0 – 21.99999
22.0 – 29.99999
q
w
e
r
t
t
y
u
i
@1
@2
@3
@4
@5
@6
@7
@8
@9
#0
#1
#2
#3
#4
#5
#6
#7
#8
#9
$0
$1
!5
!6
!7
!8
!9
@0
!0
!1
!2
!3
!4
o
$2
$3
$4
$5
$6
$7
$8
$9
A
B
C
D
*; Refer to “PARTS LIST.”
Summary of Contents for IC-718
Page 29: ...SERVICE MANUAL ADDENDUM CONTENTS PARTS LIST 1 BOARD LAYOUTS 19 VOLTAGE DIAGRAM 25 Jun 2011 ...
Page 49: ...Jun 2011 20 C16 CP1 PLL UNIT BOTTOM VIEW FILTER UNIT BOTTOM VIEW PA UNIT BOTTOM VIEW ...
Page 81: ...SERVICE MANUAL ADDENDUM CONTENTS PARTS LIST 1 BOARD LAYOUTS 16 VOLTAGE DIAGRAM 18 Jul 2009 ...
Page 196: ...9 4 VARISTOR BOARD BOTTOM VIEW PLL UNIT BOTTOM VIEW PA UNIT ...
Page 200: ...9 8 BOTTOM VIEW FILTER UNIT ...
Page 206: ...1 1 32 Kamiminami Hirano ku Osaka 547 0003 Japan S 13701MZ C1 q 2000 Icom Inc ...