Icom IC-7800 Service Manual Addendum page 235

Aug. 2008
RXPLL-A/B UNIT (3)
L1803
HF50ACC322513
Q1005
XP4311
EP1802
4 3
5 2
6 1
Explanatory notes
VOLTAGE LINE
RX LINE
[A]: RXPLL-A unit
[B]: RXPLL-B unit
RL1003 FTR-B4CA012Z
FTR-B4CA012Z RL1004
C1009 0.0047
C1008
EP1814
0.0047
EP1813
EP1812
EP1809
Q1205
XP4311 EP1810
4 3
EP1811
5 2
6 1
C1001
D1001
220p
1SV307
R1018
J1001
from 56k
MKR
RXPLL-A
unit J601
RXPLL-A unit only
FTR-B4CA012Z
RL1001
L1014 L1002
from DIGISEL C1003
1 LR-499
unit J1
J1002
[A] HF RF INPUT
from DIGISEL
unit J501
[B]
R1000
100
C1002
0.0047
Q1001
2SC5551
from BPF
unit J102 J1201
[A] 6m RF INPUT
from BPF
unit J602
[B]
EP1818
L1701
RX+3R3V
RX+15V
IC1701
CD74HC4094M
1
STROBE VCC
2
DATA OE
3
CP Q4
4
Q0 Q5
5
Q1 Q6
6
Q2 Q7
7
Q3 QS2
8
GND QS1
J1701
GND
C1701
L1702
+15V
RX+15V 0.1
+15V
NC
L1703
-12V
NC
L1704
to MAIN
+3R3V RX+3R3V
unit J400
AGCO(A/B) EP1701 MAGC
[A]
AGCI(A/B) EP1702 IC1702
CD74HC4094M
+8V RX+8V
to MAIN GND L1705 1
STROBE VCC
unit J403 GND L1702-L1705 2
HF50ACC322513 DATA OE
[B] MCK R1716 1k MCK 3
CP Q4
MDAT R1717 1k 4
Q0 Q5
RSTB(A/B) R1718 1k 5
Q1 Q6
GND 6
Q2 Q7
7
Q3 QS2
8
GND QS1
to MAIN
J1501 R1543
unit J401
100
DIF(A/B)
[A]
GND
RX+3R3V
to MAIN
unit J404
[B]
D1701
RB706F
RX+15V
-38.9dBm
MAGC
RX+15V
C1073
39p
L1006
L1005 C1014 LR-489
1M
0.033
R1056 L1052
Q1006
0
2SC5551
L1004
R1007
LR-488
5.6
R1023 C1054
47 10p
L1010
1.35V
LR-486
C1026
1
RL1005
Q1007
FTR-B4CA012Z
L1007 2SC5551 L1012
LR-439
LR-439
2.04V
L1011
LR-486
C1027
C1028
1
0.0047
14.29V
Q1008
2SC5551
D1201
C1214
1SV307 220p
R1210
56k
RXPLL-A unit only
RL1203 RL1206
FTR-B4CA012Z FTR-B4CA012Z
Q1004
R1211
R1025 XP4311
0
68
R1021
15
C1006 1
C1243
C1000
RL1002 0.0047
C1207
22p
FTR-B4CA012Z
0.0047
VPOFFL
Q1701
XP4311
4 3
C1007 5 2
0.0047
6 1
EP1807
EP1806
EP1826
EP1805
RX+15V VPR1 VPR1
VPOFFL
IC1703
TD62783AF
16 RX+15V
15 1 18 R1701 220 HFDW
IN1 O1
14 2 17
C1201
IN2 O2
R1703 220 HPOFF
13 3 16 68p
IN3 O3
R1704 220 VPOFF
12 4 15
IN4 O4
11 5 14
IN5 O5
R1706 220 VPR1
10 6 13
IN6 O6
R1707 220 HPR2
9 7 12
IN7 O7
HPR1
8 11 R1708 220
IN8 O8
9 10 C1202
VS GND L1208
68p LR-439
16 R1709 2.2k HF3V RX+15V
15 R1710 2.2k VH3V
14 R1711 6.8k 1IFW
13 R1712 6.8k 1IFN
Q1702
12 R1715 6.8k 1IFNN
XP4311
11
VH15V 3 4
10
9 HF15V
2 5
Q1703 1 6
XP4311
3 4 RX+15V
2 5
+10V
1 6
RX+3R3V
IC1704
14.63V 10.0V R1673
AN78L10M
1k
MAGC 1
RX+15V +10V
I O
IC1653
G
NJM072BM
RX+15V
MAGC MAGC
0.1mV
74
RX+15V
C1124 0.01
C1123 0.01
C1071
56p
5.38V
5.22V
L1055
LR-495
R1055
L1053 L1054 L1056
0 68n
C1056
R1131 47k
22p
R1101
IC1051
5k
SD5400CY
R1135 100k
1 14
S2 S1
R1132
2 13
BODY NC R1134 47k
5k
3 12
G2 G1
4 11 C1125 0.01
D2 D1
5
D3 D4 10
6
RL1006 G3 G4 9
FTR-B4CA012Z 7 8
S3 S4
L1060 L1062
68n
L1063
C1029
0.0047
L1093
HF50ACC322513
RX+15V
RX+15V
R1072
MCR10-JPW
L1229
HF50ACC322513
R1073
MCR10-JPW
RX+15V
Q1214
2SB1123
L1217 L1218 L1219
56n
C1247 47p
C1245 C1249
100p 12p
Q1213
DTC114EU
C1268
7p
L1221
R1226
560
Q1211
MMBFU310 L1222
14.1 MHz: 2.61V
LS-198
50.1 MHz: 0V
L1220
C1251
LR-116
0.01
L1223 C1082
56n 0.01
3
OUT2 VCONT2
C1252
2
GND IN
0.01
1
OUT1 VCONT1
C1081
0.01 IC1081
R1227
14.1 MHz: 0V
560
50.1 MHz: 2.60V
1.2mV
L1301 L1302 L1303
68n 68n 68n
R1304
33k
C1307
C1303 C1305
15p
7p 10p
Q1301
2SC4673
RX+15V
IC1505
NJM074M
14
R1540
820
VPOFFL
C1536 680p
RX+15V
L1210 L1211 IC1506
LR-503 C1236 NJM5534MD
0.01 R1539 C1535
8 1
VT/COMP VT 2 2.2k 0.1
7 8
V+ IN- 3
6
OUT IN+ 4
5 IC1505
COMP GND
NJM074M
C1541
22p
L1216
Q1209 C1226 LR-439
2SC5551 0.5p
L1213
LR-503 L1214
R1537
100
C1240
0.01 4
V+
IC1505
V-
NJM074M
11
Q1210
C1227
2SC5551 0.5p R1538
100
+10V +10V
L1655
RX+3R3V RX+3R3V
2
D1653
R1661 R1662
1SS355 R1667 220
10k 10k
3
IC1652
2
BA15532F
1 R1675 C1662 C1660
4.7k 0.1
3 0.1
8 8
R1668 220
R1663 10k
V+ V+
R1664
V- V-
D1654 10k
6 C1661
4 4
1SS355
7 0.1
5
C1663
IC1652 IC1652
R1677
0.1 BA15532F
BA15532F
4.7k
RX+15V
C1109 47p
C1114
Q1101
0.01
Q1105
2SC3950 Q1104
2SC5501
C1110
2SC3950
0.01
L1105
C1102
R1114
L1101 0.01 LR-490
4.7
LR-491 R1116
1k
R1109 R1118
15 2.2k
R1123
2.2k
R1122
47
R1105
L1103
3.3k
RX+15V
C1104
0.1
Q1103
2SB1123
R1133 IC1653
NJM072BM
3.3k
6
C1151 7
68p L1091 EP1808
5
HF50ACC322513
EP1836
L1151
Q1102
LR-519
DTC114EU
EP1834
C1152
68p
EP1837 EP1838
1IFNN
L1401 L1402
2.59V
LS-484B LS-484B
RX+15V
FI1401
FL-364A [A]
FL-359A [B]
5
2.85V
IC1402
1 4
NJG1519KC1 C1416
IN GND
3 2 0.01
6 5 GND OUT
P3 P2
7 4
6
VCTL3 VCTL2
8 3
PC GND
C1457
9 2
VCTL4 VCTL1 0.01
C1406
10 1
0.001 2.7mV P4 P1
L1405 L1406 C1423 L1407
56n 200p LR-492
L1403 L1404
LS-484B LS-484B
C1424
FI1402
10p
FL-358A [A]
FL-360A [B]
5
1 4
IN GND
3 2
C1439
GND OUT R1406
5p 4.7k
6
C1415
12p
Q1352
C1361
2SC5551 12p
C1083
4
0.01
5
6
R1362 100k
D1351 1SV307
R1306 L1306
150
C1309 C1310 RX+15V
39p 39p
R1311
MCR10-JPW
RX+15V RX+15V
C1510
L1501
68p
R1510 10k
R1511 470
13
12 IC1503
R1518
NJM5534MD
Q1501
10k
8 1 2SC4835
VT/COMP VT 2 R1508 C1509
7
R1515
V+ IN- 3 1k 0.022
6
10k
R1519 R1520 OUT IN+ 4
5
6
10k 10k COMP GND
7
C1515 180p
5
IC1505
R1504
NJM074M 10
9
C1516
3.5p
10
C1517
68p
R1517
R1516
10k
RH03ADC13X
R1534
IC1504
10k
NJM5534MD
Q1502
8 1
2SC4835
R1532 VT/COMP VT 2 R1527 C1524
7
10k V+ IN- 3 1k 0.022
R1535 2 6
10k OUT IN+ 4
5
1
C1529 680p COMP GND
3
IC1505
NJM074M
C1530
390p
L1807
HF50ACC322513 L1804
HF50ACC322513
RX+15V
+10V
R1657 100k
RX+3R3V
IC1651
TC74LCX00F
C1657 R1659
1 R1665 9
0.001
100 100
3 8
EP1804
2 10
C1654
IC1651
L1652 0.001
C1658 R1660 TC74LCX00F
4
0.001 100
IC1651 6
12
TC74LCX00F 5
11
14
IC1651 13
V+
TC74LCX00F
GND
IC1651
7
L1654 TC74LCX00F
RX+3R3V
RX+15V RX+15V
J1101
C1118 R1127 D1101
C1121 [A]/[B]
0.1 47 MA77 0.1
R1LO/S1LO from RXPLL-A/B
unit J351
14.1 MHz: 0.5dBm (RXPLL-A)
: 0.6dBm (RXPLL-B)
50.1 MHz: 1.4dBm (RXPLL-A)
: 1.3dBm (RXPLL-B)
HF15V
VH15V
IC1403
NJG1519KC1
5 6
P2 P3 7
4
VCTL2 VCTL3 8
3
GND PC
2 9
VCTL1 VCTL4 10
1
P1 P4
L1411
L1410
LS-484B LS-484B
FI1403
FL-396 [A]
FL-397 [B]
5
1 4
IN GND
3 2
C1458
GND OUT
0.01
6
Q1402 C1434
R1419
2SC4402 5p
0
R1412 C1435
10
5p
R1402
68
C1431 0.001
R1401 Q1403
R1413
10
2SC4402 10
R1415 L1409
Q1401
47
2SC5501
R1414
100k
0.717V
+10V
C1441
0.0047
R1417 R1418
0 0
to SCOPE
[A]/[B] J1301 unit J1
SCPA/SCPB [A]
to SCOPE
unit J2
RX+15V
[B]
R1312 R1313
MCR10-JPW MCR10-JPW
MESUREMENT CONDITIONS
voltage at RX(no instruction)
frequency: 14.1 MHz
mode: J3E(USB)
ANT(RX): no input
(TX): no modulation
Digital tester
range: input impedance
IC1501
C1502 R1502
9A41
1 33
3 4
GND RF
2 5
GND IF
1 6
LO GND
C1505
10p
-4.1dBm
IC1502
C1519 R1522
9A41
1
33
3 4
GND RF
2 5
GND IF
1 6
LO GND
R1524 C1522
10 10p
+10V +10V
-11.4dBm (RXPLL-A)
R1656
39k
C1651 R1652
0.0047 15
R2LO
Q1651
2SC4215
RXPLL-A/B
UNIT(2)