Icom IC-706MKIIG Service Manual page 71

Hf/vhf/uhf all mode transceiver
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• MAIN UNIT
MAIN (3)
MAIN UNIT (2)
DRIV
14V
DRIV
14V
HFOR
8V
HFOR
8V
VFOR
5V
VFOR
5V
UFOR
R8V
UFOR
AMS8
HREF
T8V
HREF
WFMB
VREF
R8V
HV
VREF
R8V
UREF
T8V
H5V
UREF
T8V
UL
AGC
2IF
UL
AGC
BDT
ALC
BDT
ALC
KEY
L1
KEY
L1
STRT
L2
STRT
L2
CIV
L3
CIV
L3
C899
CIVE
L4
CIVE
L4
0.001
FSKK
L5
FSKK
L5
DASH
L6
DASH
L6
R898
DOT
L7
DOT
L7
100k
U/D
L8
U/D
L8
BAND
L9
BAND
L9
DIN
B0
IC891b
R903
DIN
B0
6
DOUT
B7
4.7k
-
7
DOUT
B7
5
MIC
B7W
+
MIC
B7W
MICE
BHF
MICE
BHF
AMOD
1F15
AMOD
1F15
C897 1
AFO
ATTS
AFO
ATTS
AAF
PR1S
AAF
PR1S
EALC
PR2S
EALC
PR2S
SNOSR
PR3S
C896
SNOSR
PR3S
SEND
PR4S
0.1
SEND
PR4S
SDSS
TB1V
SDSS
TB1V
PTTP
TB2V
PTTP
TB2V
ICH
TB3V
ICH
TB3V
R892
ICL
TB4V
R890
ICL
TB4V
56k
150k
WFAF
SQLS
WFAF
SQLS
NBS
2IF
NBS
IC891a
R893
WCNT
NJM2902V
GND
WCNT
4
47k
2
1
-
3
+
11
CP791
J791
BFO
PLL
J991
C1410
0.0047
J1431
AFI
AFI
C883
IC891c
R882
AFIE
AFIE
1
9
8
-
10k
PLL
AFOE
AFOE
10
+
P251
AFO
AFO
C1397
0.0047
C1391
C862
0.0047
0.0047
C1382
0.0047
IC861
BU4052BCFV
C1381
1
16
0.0047
Y0
VDD
2
15
Y2
X2
J1421
3
14
Y
X1
LRXD
LRXD
4
13
Y3
X
LTXD
LTXD
5
12
Y1
X0
8V
6
11
INH
X3
AFO
AFO
7
10
VEE
A
FRONT
GND
8
9
VSS
B
MP19
MIC
MIC
MICE
MICE
PWK
PWK
J1381
HV
14V
14V
FSKK
FSKK
R937
DDT
DDT
10k
IMST
IMST
IDS
IDS
C938
DINT
DINT
100p
GND
IC931
AAF
AAF
PC5023-077
R939
POWS
POWS
13
100k
NC
8V
14
C934
AVI
8V
15
470p
AVO
AFBP
AFBP
16
MUTE
UL
UL
17
R933
VOXO
PLL
DSPS
DSPS
18
100k
VOXI
J254
5V
19
BU2O
AFGC
20
AFGC
BU2I
SPS
SPS
21
AMPO
MLLV
MLLV
22
AMP-
PCE
PCE
23
AMP+
PBST
PBST
24
GND
BOT
BOT
C931
PCK
PCK
2
R942
CON0
CON0
1k
CON1
CON1
CON2
CON2
PDST
POST
DRES
DRES
H5V
MEASUREMENT CONDITIONS
SUPPLY VOLTAGE:13.8 V
14.1 MHz USB
DIGITAL MULTIMETER :50 k‰/V
LEFT SIDE
10 - 4
14V
8V
5V
R8V
T8V
HV
H5V
2IF
R912
R913
100k
470
IC811b
BAND
6
Q773
Q772
IC891d
7
-
5
UMC1N
UMC1N
13
+
4
3
4
-
14
Q777
12
2SA1576
+
BANV
2
Q774
2SC4081
Q776
SPCH
2SC4081
5
1
5
AFBP
R781
R783
100k
47k
14V
AMAF
FMAF
SSAF
CTCV
8V
BFO
BEEP
R828
470k
C828
IC841
100p
AFI
TA4101F
1
8
IFOUT
COLECT
2
7
IC811c
R829
VCC
GND
100k
3
6
9
OSCIN
BASE
8
-
4
5
10
BASE
BASE
C851
+
100p
BFO
5V
T8V
R1142
R1141
47k
47k
IC1141
C1141
BU4052BCFV
0.47
R1041
C1041
WFAF
DIN
1
16
Y0
VDD
100
1
2
15
R861
Y2
X2
3
14
2.2k
Y
X1
4
13
IC971
Y3
X
5
12
TC4W53FU
Y1
X0
RXS
6
11
1
8
INH
X3
7
10
MODS
MINH
2
7
VEE
A
8
9
D96S
3
6
VSS
B
R971
AFIE
4
5
10k
8V
R981
10
6.3 V
4
R964
2
4.3 V
33k
C963
-
3
10
R953
+
10k
11
C961
0.47
C1144
R1149
12
VCC
0.1
6.8k
Q961
11
2SC4081
SWC
10
VCAC
9
3.7 V
VCAO
8
VCAI
R949
7
SWO
47k
R948
C946
6
BU1O
47k
0.1
5
BU1I
4
C945 1
SWI
C1163
R1165
R1166
3
CMPO
0.1
100k
330k
2
CMPI
R946
1
10k
NC
R945
R944
R1167
200k
22k
C1161
R1161
100k
13
R941
0.47
100k
-
14
12
D932
D931
220
+
DA221
DA221
R1163
R1162
IC981d
15k
100k
D1161
1SS385
R1164
C1162
18k
0.1
D772
R772
MA2S111
1k
R774
D771
1k
5.8 V
C741
3
1SS375
C771
0.0047
150p
Q771
L741
L731
2
2SC4081
R771
3.2 V
R752
LS-516
LS-516
4.7k
C761
47k
0.0047
C751
1
220p
R763
R764
R761
100k
15k
1k
Q751
D761
2SC4081
Q741
1SS375
2SK882
C764
1.9 V
R742
R736
0.01
47
47
FMAF
8V
IC791
TA31136FN
FI791
1
SFPC455E-
OSCIN
TC01
2
R813
OSCOUT
3
10k
MIXOUT
4
VCC
5
IC811a
IFIN
NJM2902V
R812
C812
6
39k
0.01
DEC
4
2
7
1
-
FILOUT
3
8
IC811d
+
FILIN
11
C825
C813
R795
R825
R824
R823
0.1
13
0.01
150k
14
-
82k
82k
82k
12
+
R814
R794
150k
330k
IC1011
R1011
C1011
LC715317
R1018
C1020
C1023
100
0.0047
100k
68p
150p
1
24
XIN
XOUT
IFST
2
23
CP1011
CE
PDB2
MCK
3
22
CL
PDB1
MOT
4
21
DI
AIA
5
20
LDB
AOB
6
19
LDA
OUTB
7
18
CA
CB
D1013
8
17
TEST
VDD
1SS375
R1012
9
16
33k
PDA2
PIB
R1019
10
15
PDA1
VSS
2.2k
11
14
AIA
PIA
D1014
12
13
AOA
OUTA
1SS375
R1015
47
4.4 V
R1000
4.4 V
560
R1050 330
R988
R993
C988
IC981b
R995
R1001
150k
82k
0.0022
1
6
1.2k
68k
-
5
+
IC981a
NJM2058M
R994
82k
R1003
R991
680k
68k
R1045
RV-148
Q981
R1048
(4.7kB)
DTC114EE
820
Q1041
DTC114EE
9
-
8
10
+
R998
IC981c
22k
Q982
DTC114EE
5.9 V
D732
UMC3N
4
3
D721
FI671
3.9 V
C662
C571
MA862
FL-272
6.1 V
0.0047
0.0047
1
C722
R722
2
0.1
5.6k
3 4
D672
5
1
Q721
MA862
2SC4081
Q731
2F23
C731
3SK126
4.0 V
0.0047
C683
FI681
82p
FL-94
2.5 V
D682
MA862
2F80
D791
MA862
D683
MA2S111
R792
10k
C793
L791
C691
100uH
0.0047
0.0047
16
D692
MIXIN
15
2FTH
MA982
GND
14
N-REC
13
C796 0.1
N-DET
12
RSSI
C795 100p
11
IFOUT
10
C701
QUAD
0.0047
9
NSQL
AFOUT
C803 1
R803 4.7k
DOUT
D702
Q1014
MA982
OP1
C798
UMC1N
0.01
1
2
5
3
C711
0.0047
4
D712
0.8 V(FM)
6.6 V(FM)
MA982
OP2
C1027
10p
R1022
R1026
CP1071
100k
100k
CP1002
D1072
D1071
MA2S728
MA2S111
HFOR
4.3 V(FM)
D1078
R1074
Q1011
Q1013
MA2S728
2.2M
2SK210
2SC4081
VFOR
L1014
10uH
C1024
3.4 V(FM)
R1028
C1029
D1073
R1076
R1077
D1074
6
150p
Q1012
1k
12p
MA2S728
100k
220k
-
7
UFOR
1SS385
5
DTC114EE
+
FORL
CP1091
IC1091b
Q1091
R1070
DTC114EE
56k
D1075
MA2S111
POCV
Q1071
CP1041
DTC114EE
ALCL
R1075
D1077
D1076
R1052
R1055
MA8033
10k
MA8033
IC1041
330
10k
L1044
R1080
NJM1496V
100uH
RV-156
HREF
R1079
1
14
(220k)
VS+
VEE
L1042
330
W1078
VREF
2
13
VCS
NC
100uH
R1081
3
12
AMS8
Q1072
VCS
VO-
100k
4
11
DTC114EE
VS-
NC
5
10
BHF
BIAS
VCC-
UREF
6
9
VO+
NC
D981
7
8
D1042
R1082
1SS385
NC
VCC+
MA862
RV-156
W1056
(220k)
REFL
Q1061
R1083
Q1073
2SA1576
100k
DTC114EE
ICH
L7
ICL
C1047
L1043
Q1062
R1084
10
100uH
2SC4051
RV-156
(220k)
Q1074
DTC114EE
R1062
L8
1k
R1086
WCNT
RV-156
(220k)
R924
Q1075
4.7k
TIFS
DTC114EE
L9
CP921
KDS8
R923
R1088
D921
470
RV-156
R921
DAN222
(220k)
RV-109
(2.2kB)
14V
8V
5V
MAIN UNIT (4)
R8V
T8V
H5V
HV
HV
H5V
14V
8V
5V
AMS
AMS8
AMS
WFM8
FMS8
UNF8
R8V
T8V
2
L1
L1
L2
L2
L3
MP5
L3
D671
L4
L4
MA862
L5
L5
L6
R673
L6
L7
220
L7
L8
L8
L9
C681
L9
B0
1.5p
B0
B7
B7
B7W
B7W
BHF
BHF
D681
IDS
IDS
MA982
1F15
1F15
2F23
2F23
2F80
R683
2FB0
2FTH
220
2FTH
OP1
OP1
OP2
OP2
RXS
RXS
ATTS
ATTS
PR1S
PR1S
D691
PR2S
PR2S
MA982
PR3S
PR3S
PR4S
PR4S
TB1V
TB1V
TB2V
TB2V
TB3V
TB3V
TB4V
TB4V
RFGV
RFGV
AGFS
AGFS
AFGC
AFGC
D701
AFMS
AFMS
MA982
AFS1
AFS1
AFS2
R703
AFS2
220
SQL
SQL
SQLS
SQLS
NBS
NBS
CTCV
CTCV
NSQL
NSQL
AVXL
AVXL
VOXL
VOXL
D711
COMS
COMS
MA982
MIGV
MIGV
MINH
R713
MINH
Q2226
MODS
220
MODS
DTC114EE
DRIV
DRIV
POCV
POCV
KDS8
KDS8
R1095
R1104
TIFS
4.7M
100
TIFS
ETON
ETON
TONE
TONE
R1101
D1091
ALCL
220
ALCL
DAP222
FORL
FORL
R1091
REFL
330
REFL
Q1092
SML
4
SML
R1093
2
2SC4081
LRXD
10k
-
1
LRXD
3
LTXD
+
LTXD
11
MCK
C1094
MCK
MDT
1
IC1091a
MDT
IFST
NJM2902V
IFST
ICK
ICK
DDT
DDT
DINT
DINT
DSPS
DSPS
D1111
IMST
1SS385
CP1111
D1113
IMST
R1112
CON0
1M
DAP222
CON0
CON1
CON1
CON2
R1113
CON2
IC1091c
DRES
R1116
D1112
100k
DRES
9
470
PBST
1SS385
-
8
PBST
10
PCE
+
R1114
PCE
PCK
R1115
10k
PCK
PDST
1.8k
PDST
PDT
PDT
MLLV
R1126
R1127
MLLV
UL
R1121
1M
470
UL
47k
BDT
13
BDT
-
14
KEY
12
KEY
+
Q1131
STRT
IC1091d
R1132
STRT
R1122
2SA1576
CIV
R1124
1k
CIV
47k
CIVE
33k
CIVE
SPCH
SPCH
BEEP
BEEP
R1125
DASH
RV-150
R1128
DASH
DOT
(10kB)
47k
DOT
U/D
U/D
D1132
BANV
BANV
DAP222
SPS
Q1114
SPS
Q1101
CP1001
Q2227
POWS
1SS385
POWS
DTC114EE
DTC114EE
PWK
PWK
SEND
SEND
SDSS
SDSS
PTTP
PTTP
0VDV
0VDV
D95S
D95S
SNDSR
SNDSR
MAIN (3)
GND
RIGHT SIDE

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