Icom IC-756PROIII Service Manual page 116

A
B
L1007
LR-501
C
D
E
R1202
RX: 2.8V
470 TX: 2.1V
C1215
0.1
F
R1203
470
C1216
0.1
Explanatory notes
C1217
0.1
VOLTAGE LINE
R1204
TX LINE
470
RX LINE
C1218
0.1
R1205
470
14VA
L1451
617DB
C2002
0.0047
IC2001
TA31136FN
1
OSCIN MIXIN
R2001
FI2001 2
220 OSCOUT GND
CFJ455K8 3
MIXOUT N-REC
4
VCC N-DET
5
O I IFIN RSSI
6
R2002
DEC IFOUT
7
220
FILOUT QUAD
8
FILIN AFOUT
5VS
R2007 D2002
2.2k MA2S111
3.8V
CP2002
Marker ON
Scope moving
EP2001 Scope ATT 0dB
R2004
1k
8VS
G
H
T8V
I
R14V
J
14VL_2LOAMP
K
L
14VL_EAST
M
R8V
N
ALC
O
8VL
P
5VS
Q
BLBV
R
BLAV
S
SATV
T
U
10 - 19
R1002
470
C1015
0.1
Q1003
R1003
2SK1740
470
C1016
0.1
Q1004
2SK1740
L1011
Q1005
LS-546
C1017 2SK1740
0.1
R1004
470
Q1006
C1018
2SK1740
0.1
R1005
470
L1301 C1301
617DB 0.01
Q1203
2SK1740
10.8V
D1201
Q1204 L1211
CPH5513
2SK1740
LS-546
1 5
4
2 3
Q1205
2SK1740
Q1206
C1222
2SK1740
0.0047
R1212
L1220
2.2k 0.39µ
R8V
D1451
HSB88WS
L1452 L1551
617DB
0.15µ
D1501 C1501 R1504 C1552
MA77 0.0047 2.2k 7p
FI2002 FI2003
C2008
SFECV13.35MAS SFECV13.35MAS
0.0047
16 C1502
0.0047
15
C2009
14
7p
13
C2012 L2101
D2101 HSB88WS
LR-358
12 100p
11
10
9
R2011 2.2M
R2102
15
C2204
R2013 470k
5 2p
7 +
6
-
Q2202
IC2002
2SK882
NJM4558M
IC2002
R2009
NJM4558M
82k
3
1 +
2
L2202
-
R2010 R2014
LS-484B
100k 15k
R2008
390k
8VS
T8V
R14V
14VL_2LOAMP
14VL_EAST
R8V
ALC
8VL
5VS
BLBV
BLAV
L1101
R1101 R1103
617DB
8.2 8.2
1 2 3 4 R1012
D-WATCH BAL
1.5k
OFF 0.2V 0V 4.4V 4.6V
Left terminal 0.2V 0V 4.4V 4.6V
ON Center 4.4V 4.6V 4.4V 4.6V
D1001 Right terminal 4.4V 4.6V 0.2V 0V
CPH5513
1 5
4
1
L1012 10µ
2 3
D1003 CPH5513 C1027
0.0047
1 5
4
2 3
C1028
0.0047
D1002 1SV263
R1301 R1303
8.2 8.2 D1301 1SV307
R1453 33 D1302 1SV307
L1302
10µ
C1454 0.1
R8V
R1214 1.5k
L1212 10µ
3
C1229
D1204 CPH5513
0.0047
1 5
Q1209
MMBFU310 4
2 3
C1230
0.0047
D1203 1SV263
L1553
LS-484B
L1552
0.15µ Q1551
2SK882
T8V
L2103 L2201
R2202
LR-358 LS-484B
15
C2202 0.0047
Q2203
C2208 C2209 R2211 L2203
2SC4081
10p 0.0047 1k 2.7µ
R2213
10k
A
on Scope moving
Scope ATT A B
C2211
0dB 0.2V 0V 0.0047
EP2002
10dB 0.7V 0.65V
SATV
20dB 1.3V 1.35V
30dB 3.1V 3.4V C2212
0.047
B
C2014
0.001
L1102 L1103 L1104 C1106 R1106
68n 68n 56n 0.001 680
C1102 C1104
7p 12p
L1106
LR-441
Q1101
2SC5551
L1105 10µ
R1015
10k
BLBV
R1105
6.8
D1004
Q1007 MA2S111
2SC4081
2
Q1008
R1014
2SC5551 C1035 15p
15
L1019 1000µ
L1020 2.7µ
C1033 0.1
L1303 L1304 L1305 C1309 R1307
68n 68n 56n 0.001 680
C1305 C1307
11.6V
7p 12p
L1307
LR-441
4 Q1301
2SC5551
L1306 10µ
R1217 10k EP1205
R1306
6.8
D1205
MA2S111
Q1207
2SC4081
11.2V
Q1208
R1216 BLAV
15 2SC5551
C1237 15p
L137 1000µ
14VA
1.86V
L1219 2.7µ
RX: 0V
TX: 7.4V
L1554 R1557 C1561 D1551 D1601 C1602
0.47µ 4.7 0.001 MA77 MA77 0.0047
C1651 5p
C1601 R1603
220p 47
L1601
27n
C1563 0.001
RX: 10.7V
CP1801
TX: 10.7V
L1801
LS-484B
Q1801
b
2SK882
C1801 R1802
0.0047 15
Q2201 EP1801
2SK882
R1806
100
C2104
Q2101
0.0047
2SK882
L2102
LS-484B
a
S3LO
R2104
100
8VS MKR
C1858 0.1
2IF
J1101
1LOB
from PLL
unit J651
C1111
0.01
L1018
LR-358
J1301
1LOA from PLL
unit J351
C1314
0.01
J1651
J1801
2LO
from PLL
unit J81
J2101
S2LO from PLL
unit J901
CP2001
J2001
S3LO from PLL
unit J801
J951
MKR
from PLL
unit J851
J1851 P1851
W1852
2IF to MAIN-A
unit J101
W1851
RF-B UNIT