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Icom Ic706Mk2g Hf/Vhf/Uhf All Mode Tranciever Service Manual

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Page 61

1 11
12
2244
34
33 231100 76
26 50 2575
51
1 5
106
BFO
GND
P991
TO MAIN J791
P891TO MAIN J281
P681
TO MAIN
J551 TO MAIN J1431
AFI
AFIE
AFOE
AFO
14V FSKKIMSTDINTAAF8V AFBPH5V
PDST
PCK CON1PBST
MLLV
AFGC
DSPS
HV 14V DDTICK GND POWS8V DRES
CON2
PDT CON0PCE
SPS
5V
UL
J254
1
29 302
TO MAIN
J1381
GND
DSPS
ICK
IMST
DRES
GND
GND
5V
DDT
DINT
J2531 9
2 10TO OPTIONAL UNIT
UT-106J252
2MBL
8V
THER
14V
GND
POWS
ESPE
ESPO
HV
8V
GND
14V
14V
GND
ESPE
ESPO
15 1
2 16TO PA UNIT J621
• PLL UNIT (TOP VIEW)
8-3  PLL UNIT
8 - 9 

Page 62

1
816
9
• PLL UNIT  (BOTTOM VIEW)
8 - 10 

Page 63

RTTY REMOTE
KEY
8VM
MAFM
MCEM
GNDU/DM
SENM
MICM
SQSM
17
28 J11
TO MIC
CIVEBDT
KEY DOTCIV FSKK BAND
DASH
EALCPTTP SQLS8VU/D GNDAAF AFO
DOUT AMODT8VDINTO MAIN UNIT J4611 19
2 20 J9
L2 L4
L6 GNDL1
L3
L5
L7
HREFGND14V AT13HFORSDSS14V
14V
MICE SNDSRMIC SENDTO MAIN BOARD J4311 19
2 20 J12
P1 (HRX)
TO MAIN BOARD J101
P2 (HPAO)
TO PA UNIT J172DATA ACC
1 4
8 5
AFOUT
PTTP
DIN
351
462
J14
AAF
DOUT
1
2
3
4
5
6
7
8
9
10
11
12
13
J5
BOTA
SENO1
138A
SENO2
AFA
MODA
SQSA8VA
GND 1
2 4
3
8
7
12
11
13
10 6 9 5
B
A
N
A K
E...

Page 64

• FILTER BOARD (BOTTOM VIEW)
8 - 12 

Page 65

9 - 1
SECTION 9 BLOCK DIAGRAM
IC571
µPC2713T
NB
GETEGATE
CTRL
WAVE
CTRLDRIVE
 CTRL
NB
SWNB
DETWFM
DET
AGC
CTRL
IF AMP
R8V
AGC ATT D572
ATT D572
TX TOTAL GAIN
R579 RV-143
XTAL
BPF
BPF
LPF
CERAMIC
BPF
IF
AMP
N DATA
N DATAN DATA
XTAL
BPF
XTAL
BPF
XTAL
BPF
XTAL
BPF
RFGC
AFMS
WFAF
SSAF
AMAF
FMAF
MICVOXL
AVXL
CTCV
DASH
DOT
UL
DIMMER
CTRL 
D ATA
ALC
WCNT
Q573
2SC4081Q572
2SC4081
DRIVD561 MA862
D562 MA862FI561
FL-23
9.0115 MHz
Q636
DTA114EE  
UL
NBS
Q634 2SC4081
Q635 DTC114E 
D632
1SS375
Q632
2SK882
IC631...

Page 66

SECTION 10 VOLTAGE DIAGRAM
Á ÁFRONT UNIT
PC3/AN11
AVSS
TEST
X2
X1
VSS
OSC1
OSC2
RES
MD0
P20/IRQ4/ADTRG
P21/UD 1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51 52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
P22
P23
P24
P25
P26
P27
P30/SCK1
P31/SI1
P32/SO1
P33/SCK2
P34/SI2
P35/SO2
P36/STRB
P37/CS
VSS
V3
V2
V1
VCC...

Page 67

GND
GND
GND
THH
L4H
L6H
PA2S
GND
SRF
SRF
GND
GND
T8V
B7H
L5H
L3H
L2H
GND
SIF
SIF D192
MA2S077 L196
0.12uH
C199
15p
C198
39p
C200
39p C197
0.01
L195
LR-317
R195 47R191
220k C191
0.0047
R194
1 L194
2.2uH
Q191
2SK2171
L193
0.33uH
C196
0.01
R193
150C195
33p
L192
0.22uHC194
180pC193
56p
L191
10uHL197
47nH D191
MA2S077R192
47 C192
0.01
D172
MA2S077L176
10uH
R172
100 C182
0.01C180
330p L175
0.15uH
C179
0.01C181
82pC178
68p L174
0.27uH
C177
120p
C175
24p L173
82nH
C176
150p C174
150p C172
39p
L172
68nH
C173
75p...

Page 68

Á ÁMAIN UNIT
J401
PA
J651R8V
T8V
ICH
ICL
AT13
VFOR
UFOR
VREF
UREF
GND
L8
L9
KEY
STRT
PR3S
PR4S
TB1V
TB2V
TB3V
TB4V
CP401 C401        0.0047
C402        0.0047
CP402
CP403 C403        0.0047
C404        0.0047
CP404
CP405
C414        470p
CP406
C415        470p
CP407
CP408
CP409 C405        0.0047
CP410
C406        0.0047
CP411
CP412 C407        0.0047
C417        0.0047
CP413
CP414
CP415 C408        0.0047
C409        0.0047
CP416
CP417 C410        0.0047
C411        0.0047
CP418
CP419 C412...

Page 69

MAIN UNIT (2)
14V
8V
5V
R8V
T8V AMS8
WFMB
AGC
ALC
L1
L2
L3
L4
L5
L6
L7
L8
L9
B0
B7
B7W
BHF
1F15
ATTS
PR1S
PR2S
PR3S
PR4S
TB1V
TB2V
TB3V
TB4V
SQLS VFOR
UFOR
HREF
VREF
KEY
STRT
CIV
CIVE
FSKK
DASH
DOT
U/D
BAND
DIN
DOUT
MIC
MICE
AMOD
AFO
AAF
EALC
SNOSR
SEND
SDSS
PTTP
ICH
ICL
WFAF
2IF
WCNT GND UREF
UL
BDT HFOR
NBS
J1431
J1381
PLL
J254
CP1381
CP1382
CP1383
CP1384
CP1385
CP1386
CP1387
CP1388
CP1389
CP1390
CP1391
CP1392
CP1393
CP1394
CP1395
HV
14V
14V
FSKK
DDT
IMST
IDS
DINT
GND
AAF
POWS
8V
8V
AFBP
UL
DSPS
5V...

Page 70

MAIN UNIT (4)AMS8 AMS H5V
HV
14V
WFM8
R8V
T8V FMS8 8V
5V
L1
L2
L3
L4
L5
L6
L7
L8
L9
B0
B7
B7W
BHF
IDS
1F15
2F23
2FB0
2FTH
OP1
OP2
RXS
ATTS
PR1S
PR2S
PR3S
PR4S
TB1V
TB2V
TB3V
TB4V
RFGV
AGFS
AFGC
AFMS
AFS1
AFS2
SQL
SQLS
NBS
CTCV
NSQL
AVXL
VOXL
COMS
MIGV
MINH
MODS
DRIV
POCV
KDS8
TIFS
ETON
TONE
ALCL
FORL
REFL
SML
LRXD
LTXD
MCK
MDT
IFST
ICK
DDT
DINT
DSPS
IMST
CON0
CON1
CON2
DRES
PBST
PCE
PCK
PDST
PDT
MLLV
UL
BDT
KEY
STRT
CIV
CIVE
SPCH
BEEP
DASH
DOT
U/D
BANV
SPS
POWS
PWK
SEND
SDSS
PTTP
0VDV
D95S
SNDSR
GND 14V...
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