![background image](http://html.mh-extra.com/html/icom/ic-7800/ic-7800_service-manual-addendum_612348156.webp)
77
Feb 2009
VOLTAGE LINE
[A]: RXPLL-A unit
[B]: RXPLL-B unit
Explanatory notes
RX LINE
C1707 0.1
L1060
68n
R1411
100k
R1110
2.2k
C1008
0.0047
R1535
10k
C1003
1
Q1103
2SB1123
IC1703
TD62783AF
1
IN1
2
IN2
3
IN3
4
IN4
5
IN5
6
IN6
7
IN7
8
IN8
9
VS
10
GND
11
O8
12
O7
13
O6
14
O5
15
O4
16
O3
17
O2
18
O1
C1651
0.0047
IC1505
NJM074M
13
12
14
L1501
IC1651
TC74LCX00F
4
5
6
R1527
1k
Q1502
2SC4835
R1228 5k
C1115
0.1
IC1502
9A41
1
LO
2
GND
3
GND
4
RF
5
IF
6
GND
R1503
270
R1123
2.2k
R1102
C1124
C1123
0.01
0.01
100k
C1009
0.0047
R1230 2.2k
C1243
0.0047
R1121
22
R1660
100
C1240
0.01
C1307
15p
C1246
82p
R1663
10k
Q1205
XP4311
1
2
3
4
5
6
C1062
220p
R1404
470
D1653
1SS355
C1011
1
C1040
0.001
C1037
47p
R1658
100
C1512
0.1
C1002
0.0047
R1543
100
C1514
10
R1016
5.6k
Q1702
XP4311
1
2
3
4
5
6
R1115 180
C1425
0.1
L1306
L1409
R1513
330
Q1004
XP4311
1
2
3
4
5
6
C1658
0.001
C1533
0.1
R1109
15
C1535
0.1
C1207
0.0047
C1417
0.01
C1302
C1312
27p
L1401
LS-484B
C1427
0.01
R1717
1k
R1711
6.8k
L1301
68n
R1523
270
R1225
5.6k
L1303
68n
C1538
0.1
R1126 10
R1128
1.8k
C1710
0.0047
R1111
2.2k
C1119 0.0047
L1212
R1518
10k
R1127
47
C1411
8p
L1702-L1705
HF50ACC322513
C1704 0.1
R1117
4.7
C1029
0.0047
R1414
100k
IC1653
NJM072BM
6
5
7
C1703 1000
R1664
10k
R1522
33
C1309
39p
C1101
0.01
C1241 0.01
R1009
47
R1122
47
C1705 0.1
Q1403
2SC4402
R1539
2.2k
R1670
1M
C1531
100
C1521
0.47
L1353
D1701
RB706F
C1527
0.1
IC1501
9A41
1
LO
2
GND
3
GND
4
RF
5
IF
6
GND
C1121
0.1
C1540
100
C1502
1
R1007
5.6
C1429
0.01
R1120
100
R1525
1k
RL1005
FTR-B4CA012Z
C1308
0.01
C1516
3.5p
L1214
R1220
47
R1674 270
C1530
390p
C1434
5p
L1405
R1107 47
R1412
10
R1510 10k
C1430 18p
C1304
33p
C1106
0.1
L1211
R1706
220
Q1301
2SC4673
Q1352
2SC5551A-F-E
C1028
0.0047
R1659
100
C1536 680p
IC1051
SD5400CY
1
2
3
4
5
6
7
9
8
10
11
12
13
14
Q1703
XP4311
1
2
3
4
5
6
R1704
220
R1653
330
R1502
33
L1406
56n
L1058
E544EN
R1657
R1665
100k
100
R1716
1k
R1532
10k
R1520
10k
R1524
10
R1533
10k
R1514 10k
C1436
0.1
C1426
0.1
C1513
0.1
C1423
200p
R1307
68
C1313
27p
C1109 47p
R1003
47
L1305
R1528 1k
R1526
1.5k
L1704
L1705
C1665
0.01
C1305
10p
R1409
4.7k
IC1652
BA15532F
IC1652
BA15532F
6
5
7
R1501
47
C1103
0.1
C1122
3p
C1113 47p
C1708
0.0047
C1017
1
C1234
0.01
C1060
0.001
R1001
47k
R1013
1k
C1408 0.01
C1016
1
C1013
1
D1101
MA77
C1428
7p
C1311
0.01
R1540
820
R1105
3.3k
C1520
0.01
C1706 47
R1677
4.7k
R1415
47
R1114
4.7
R1542
100
C1702
0.1
R1406
4.7k
C1537
100
C1511
10
R1517
10k
IC1505
NJM074M
V+
4
V-
11
IC1402
NJG1519KC1
6
P3
7
VCTL3
8
PC
3
GND
4
VCTL2
5
P2
R1006
1k
C1528
10
Q1402
2SC4402
C1412
15p
R1103
47
R1519
10k
C1235
C1226
0.5p
R1216 47
R1213 10
0.0047
IC1651
TC74LCX00F
9
10
8
C1010
1
C1526
0.1
R1536
10k
R1416
100
L1701
R1508
1k
C1020
C1048
0.0047
C1068
1p
1
R1015
5.6k
C1228
5p
C1433
0.1
C1657
0.001
C1111
0.1
C1534
100
C1238
0.01
R1008
22
R1023
47
R1118
2.2k
R1512
330
R1224
1k
R1410
8.2k
C1405
0.01
R1651
330
C1416
0.01
C1457
0.01
R1707
220
C1001
220p
RL1002
FTR-B4CA012Z
L1402
LS-484B
C1026
1
R1541
100
R1231 2.2k
IC1505
NJM074M
2
3
1
C1712
470p
C1541
22p
L1653
C1529 680p
RL1003
FTR-B4CA012Z
R1106
12
R1504
10
C1654
0.001
C1007
0.0047
C1507
10
R1718
1k
C1421 150p
C1255
0.001
R1673
1k
C1663
0.1
R1014
1k
IC1652
BA15532F
V+
8
V-
4
C1107
0.1
EP1701
IC1651
TC74LCX00F
V+
14
GND
7
C1701
0.1
R1005
8.2k
IC1653
NJM072BM
2
3
1
R1712
6.8k
R1221
1k
IC1704
AN78L10M
G
I
O
L1702
R1233
47
D1001
RXPLL-A/B UNIT (3)
1SV307
RXPLL-A unit only
R1507
1k
R1652
15
R1229
2.2k
R1051
1M
L1302
68n
R1714
68k
C1306
24p
C1112
0.01
C1519
1
Q1701
XP4311
1
2
3
4
5
6
Q1501
2SC4835
Q1213
DTC114EU
C1118
0.1
R1521
47
J1701
C1504
0.47
C1656
20p
C1510
68p
R1119
1.8k
IC1505
NJM074M
6
5
7
R1403
1k
C1303
7p
C1021
1
C1406
0.001
C1419
0.001
C1006
1
R1004
1k
C1251
0.01
R1129
1.8k
IC1653
NJM072BM
V+
8
V-
4
IC1651
TC74LCX00F
1
2
3
C1532
0.1
2
3
1
L1005
1M
C1236
0.01
R1708
220
R1662
10k
IC1651
TC74LCX00F
Q1651
2SC4215
12
13
11
C1310
39p
R1506
1k
C1515 180p
R1538
100
R1667 220
R1125
680
R1124
1.5k
R1709
2.2k
R1537
100
C1061
47p
L1221
J1001
MKR
from
RXPLL-A
unit J601
Q1401
2SC5501A
C1711
470p
L1404
LS-484B
R1509 1k
R1402
68
D1654
1SS355
Q1214
2SB1123
C1231 0.01
IC1505
NJM074M
9
10
8
C1232
0.01
C1525
10
C1410
15p
R1222 5.6k
R1116
1k
C1659
0.1
L1408
E544EN
C1539
0.1
R1713
68k
C1709
0.0047
R1232 22k
C1522
10p
C1012
1
R1668 220
C1418
0.001
C1005
0.1
R1113 2.2k
C1661
0.1
C1104
0.1
C1239
0.0047
C1420
82p
Q1105
2SC5501A
R1405
150
D1102
MA77
C1508 0.1
C1503
0.01
R1703
220
C1662
0.1
R1104
47
R1304
33k
RL1004
FTR-B4CA012Z
C1523
330p
R1675
4.7k
R1661
10k
C1435
5p
R1515
10k
J1101
from RXPLL-A/B
unit J351
C1117
10p
C1252
0.01
R1530
330
R1408
10
R1054
27
C1116
0.01
R1413
10
R1002
2.2k
R1710
2.2k
L1209
RL1001
FTR-B4CA012Z
R1534
10k
Q1005
XP4311
1
2
3
4
5
6
Q1102
DTC114EU
C1120
0.0047
R1529
1k
to MAIN
unit J401
[A]
to MAIN
unit J404
[B]
R1306
150
C1083
0.01
C1102
0.01
C1431 0.001
L1403
LS-484B
RL1206
FTR-B4CA012Z
R1223
47
C1114
0.01
R1101
5k
EP1702
RL1006
FTR-B4CA012Z
C1505
10p
R1130
2.2k
C1660
0.1
L1652
C1110
0.01
L1220
LR-116
R1010
47
L1304
L1703
RL1203
FTR-B4CA012Z
C1713
0.0047
R1401
10
C1506
330p
C1027
1
C1004
0.1
R1511 470
R1531
330
C1517
68p
C1253
C1256 10p
0.01
C1424
10p
C1432
0.0015
C1409 0.01
R1407
8.2k
R1516
TMC3ADC13X 1K
CP1708
CP1707
CP1705
CP1702
CP1701
R1505
8.2k
C1415
12p
C1439
5p
C1361
12p
C1413 12p
C1414
8p
C1264
68p
L1013
R1056
0
C1073
39p
L1052
C1053
68p
C1054
10p
C1055
100p
120p
C1056
22p
C1057
C1067
10p
L1217
56n
C1244
39p
C1245
100p
C1268
7p
C1247 47p
C1248 100p
C1249
12p
C1250 56p
R1301
47
C1257
0.1
C1266 12p
C1265
10p
R1226
560
R1227
560
C1714
0.0047
C1716
0.0047
C1717
0.0047
C1267
0.0047
C1441
0.0047
L1229
HF50ACC322513
HF50ACC322513
L1092
HF50A
CC322513
EP1801
EP1802
L1807
HF50ACC322513
L1803
HF50ACC322513
L1805
HF50A
CC322513
EP1804
EP1805
EP1806
EP1807
L1808
HF50A
CC322513
EP1808
EP1809
EP1810
EP1811
EP1812
EP1813
EP1814
EP1815
EP1816
EP1817
EP1818
EP1819
EP1820
EP1821
EP1825
EP1830
EP1831
EP1832
EP1836
EP1834
EP1835
EP1833
L1809
HF50A
CC322513
L1804
HF50ACC322513
Q1211
MMBFU310
Q1212
MMBFU310
L1053
L1054
L1102
L1104
L1218
L1219
EP1826
FI1401
FL-364A [A]
FL-359A [B]
FI1402
FL-358A [A]
FL-360A [B]
1
IN
2
OUT
3
GND
4
GND
5
6
1
IN
2
OUT
3
GND
4
GND
5
6
IC1506
NJM5534MD
1
VT
2
IN-
3
IN+
4
GND
5
COMP
6
OUT
7
V+
8
VT/COMP
IC1503
NJM5534MD
1
VT
2
IN-
3
IN+
4
GND
5
COMP
6
OUT
7
V+
8
VT/COMP
IC1504
NJM5534MD
1
VT
2
IN-
3
IN+
4
GND
5
COMP
6
OUT
7
V+
8
VT/COMP
IC1701
CD74HC4094M
1
STROBE
2
DATA
3
CP
4
Q0
5
Q1
6
Q2
7
Q3
8
GND
9
QS1
10
QS2
11
Q7
12
Q6
13
Q5
14
Q4
15
OE
16
VCC
IC1702
CD74HC4094M
1
STROBE
2
DATA
3
CP
4
Q0
5
Q1
6
Q2
7
Q3
8
GND
9
QS1
10
QS2
11
Q7
12
Q6
13
Q5
14
Q4
15
OE
16
VCC
L1228
C1501
0.01
C1518 0.01
Q1006
2SC5551A-F-E
Q1007
2SC5551A-F-E
Q1008
2SC5551A-F-E
Q1101
2SC3950
Q1104
2SC3950
Q1209
2SC5551A-F-E
Q1210
2SC5551A-F-E
L1002
LR-499
L1004
LR-488
L1006
LR-489
L1007
LR-439
L1010
LR-486
L1011
LR-486
L1012
LR-439
L1055
LR-495
13
12
11
10
9
8
7
6
5
4
3
2
1
L1101
LR-491
L1103
L1091
HF50ACC322513
L1105
LR-490
L1208
C1202
68p
LR-439
L1216
LR-439
L1407
LR-492
R1055
0
R1203
0
R1302
0
0.033
C1014
0.022
C1509
0.022
C1524
R2LO
3p
C1655
C1030
1
C1031
1
L1001
L1008
L1009
Q1001
2SC5551A-F-E
C1015
1
R1701
220
R1017
5.6k
R1019
10k
R1018
56k
C1032 0.1
C1215
0.1
D1201
1SV307
R1210
56k
C1214
220p
R1208 2.2k
R1209
10k
LR-503
L1210
LR-503
L1213
LS-198
L1222
R1211
0
R1212 0
VH15V
VH15V
HF15V
1IFW
HF3V
VPOFFL
VPOFFL
VPOFFL
MAGC
MA
GC
MAGC
MAGC
MAGC
MAGC
HF15V
VH3V
HF15V
+10V
DIF(A/B)
GND
1IFN
VH15V
HFDW
HPOFF
VPOFF
VPR1
HPR2
HPR1
VH15V
RX+8V
VPR1
VPR1
DA
G
C
DA
G
C
1IFNN
HPR1
HPR2
HPOFFL
HPOFFL
HPOFFL
HPOFF
HFD
W
VPOFFL
VPOFFL
HF3V
VH3V
1IFN
1IFW
VPOFFL
VPOFF
MCK
MCK
RX+3R3V
RX+3R3V
RX+3R3V
RX+3R3V
RX+3R3V
RX+3R3V
RX+3R3V
RX+3R3V
RX+3R3V
RX+3R3V
RX+15V
RX+15V
RX+15V
RX+15V
RX+15V
+10V
+10V
+10V
+10V
+10V
+10V
+10V
+10V
+10V
+10V
+10V
RX+15V
RX+15V
RX+15V
RX+15V
RX+15V
RX+15V
RX+15V
RX+15V
RX+15V
RX+15V
RX+15V
RX+15V
RX+15V
RX+15V
RX+15V
RX+15V
RX+15V
RX+15V
RX+15V
RX+15V
RX+15V
RX+15V
RX+15V
RX+15V
RX+15V
RX+15V
RX+15V
RX+15V
RX+15V
RX+15V
[A]/[B]
R1LO/S1LO
S1
NC
G1
D1
GND
RSTB(A/B)
MDAT
GND
MCK
GND
6m RF INPUT
[A]/[B]
SCPA/SCPB
BODY
G2
D2
D3
G3
S3
+8V
AGCI(A/B)
AGCO(A/B)
+3R3V
NC
-12V
NC
+15V
+15V
GND
D4
G4
S2
S4
GND
8P
10P
GND
NC
RFIN
GND
1FOUT
NC
GND
11P
14P
GND
to MAIN
unit J400
[A]
to MAIN
unit J403
[B]
L1062
L1063
L1014
L1307
56n
L1223
R1152
47
C1153
0.001
R1151
47
L1655
R1419
0
R1417
0
R1418
0
D1351 1SV307
9
VCTL4
10
P4
1
P1
2
VCTL1
IC1403
NJG1519KC1
6
P3
7
VCTL3
8
PC
3
GND
4
VCTL2
5
P2
9
VCTL4
10
P4
1
P1
2
VCTL1
R1024
10
C1041
8p
C1082
0.01
C1081
0.01
C1151
68p
C1152
68p
C1000
22p
C1125 0.01
R1134 47k
R1131 47k
R1135 100k
IC1081
1
OUT1
2
GND
3
OUT2
4
VCONT2
5
IN
6
VCONT1
L1654
R1028
10
R1027
10
C1071
56p
L1093
EP1837
EP1838
L1071
L1056
68n
L1151
LR-519
C1058
5p
R1000
100
27p
C1091 0.0047
R1654
47
R1655
470
R1656
39k
C1049
0.0047
C1052 27p
C1072
220p
R1071
47
R1311
MCR10-JPW
R1312
MCR10-JPW
R1313
MCR10-JPW
R1072
MCR10-JPW
R1073
MCR10-JPW
R1133
3.3k
R1132
5k
C1437 5p
C1024
1
C1046
10p
C1050
0.001
R1029
47
C1025
1
C1051
0.001
C1092
0.0047
C1038
0.001
C1126
0.1
C1069
1p
R1030
47
C1033
10
C1034
10
C1035
10
C1074
27p
C1066
10p
C1064
47p
C1070
7p
0.0047
C1653
C1666
0.0047
L1410
LS-484B
C1453
15p
C1454
15p
C1456
12p
C1458
0.01
L1411
LS-484B
C1451
12p
FI1403
FL-396 [A]
FL-397 [B]
1
IN
2
OUT
3
GND
4
GND
5
6
C1403
0.001
C1404
0.001
C1407
0.001
C1438
5p
L1072
C1258
39p
C1085 0.0047
C1358 0.1
C1355 0.0047
C1360 0.1
C1357 9p
C1362 0.1
L1354
C1084 0.0047
R1719
68k
C1719
0.0047
C1720
0.0047
C1721
0.0047
C1093
0.0047
R1715
6.8k
1IFNN
R1357
1k
R1359
47
R1362 100k
R1358
5.6k
R1360
1k
R1361
330
L1351
C1039
0.001
C1036
82p
R1020 390
R1021
15
R1025
68
R1026
2.2k
R1022
390
J1201
from BPF
unit J102
[A]
from BPF
unit J602
[B]
from DIGISEL
unit J1
[A]
from DIGISEL
unit J501
[B]
J1002
HF RF INPUT
J1301
to SCOPE
unit J1
[A]
to SCOPE
unit J2
[B]
J1501
RXPLL-A unit only
RXPLL-A/B
UNIT(2)
C1201
68p
C1227
0.5p
R1217 47
R1214 10
-11.4dBm (RXPLL-A)
-38.9dBm
14.63V
1.35V
14.29V
5.22V
2.59V
2.85V
2.7mV
0.717V
5.38V
1.2mV
14.1 MHz: 2.61V
50.1 MHz: 0V
14.1 MHz: 0V
50.1 MHz: 2.60V
2.04V
10.0V
0.1mV
-4.1dBm
: 1.3dBm (RXPLL-B)
50.1 MHz: 1.4dBm (RXPLL-A)
: 0.6dBm (RXPLL-B)
14.1 MHz: 0.5dBm (RXPLL-A)
range: input impedance
MESUREMENT CONDITIONS
voltage at RX(no instruction)
frequency: 14.1 MHz
mode: J3E(USB)
Digital tester
ANT(RX): no input
(TX): no modulation
Summary of Contents for IC-7800
Page 1: ...SERVICE MANUAL ADDENDUM CONTENTS PARTS LIST 1 BOARD LAYOUTS 65 VOLTAGE DIAGRAM 67 Dec 2009 ...
Page 79: ...SERVICE MANUAL ADDENDUM CONTENTS PARTS LIST 1 BOARD LAYOUTS 60 VOLTAGE DIAGRAM 64 Feb 2009 ...
Page 157: ...SERVICE MANUAL ADDENDUM CONTENTS PARTS LIST 1 BOARD LAYOUTS 57 VOLTAGE DIAGRAM 59 Aug 2008 ...
Page 245: ...SERVICE MANUAL ADDENDUM CONTENTS PARTS LIST 1 BOARD LAYOUTS 57 VOLTAGE DIAGRAM 59 Jul 2008 ...
Page 333: ...THE TRANSCEIVER i7800 SERVICE MANUAL S 14015HZ C1 2 Mar 2006 ...
Page 555: ...1 1 32 Kamiminami Hirano ku Osaka 547 0003 Japan S 14015HZ C1 2 C 2004 2006 Icom Inc ...