![background image](http://html2.mh-extra.com/html/icom/ic-7851/ic-7851_servise-manual_4153040166.webp)
9-23
220
R43
J41
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
220
R44
220
R41
220
R42
MMZ1608Y102BT
EP45
EP47
MMZ1608Y102BT
MMZ1608Y102BT
EP46
EP48
EP68
220
R61
220
R62
MMZ1608Y102BT
EP65
220
R63
EP66
J61
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
220
R64
EP67
EP70
EP69
EP50
EP49
0.01
C68
0.01
C67
0.01
C66
0.01
C50
0.01
C48
0.01
C51
0.01
C49
0.01
C47
0.01
C46
10K
R181
0.1
C201
MMZ1608S601A
EP181
0.01
C184
0.1
C186
10P
C183
MMZ1608S601A
EP186
0.1
C181
MMZ1608S601A
EP182
MMZ1608S601A
EP201
SN74AUP1T17DCKR
IC181
1
2
3
4
5
SN74LVC2G74DCTR
IC201
1
CLK
2
D
3
Q
4
GND
5
Q
6
CLR
7
PRE
8
VCC
0.1
C185
10K
R151
ADP2370ACPZ
IC151
1
VIN
2
FSEL
3
EN
4
SYNC
5
FB
6
PG
7
SW
8
PGND
9
10
C151
10K
R152
MPZ2012S601A
EP151
56K
R153
10
C153
150K
R154
10
C152
CLK24M_A
1K
R182
47K
R184
100
R187
100
R186
J101
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
J81
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
0.01
C132
0.01
C131
+3R3V
+1R1VA
EP71
0.01
C69
0.01
C71
0.01
C70
EP51
J131
1
2
3
4
5
6
7
8
BDSPCR
BSPI_MISO
DAR_MOD
DAR_MIC
DR_AF
DAR_IF
FRWT
ASPI_MISO
DRESD
DSKY
BDSPCX
ADSPCX
ADSPCR
RAIFMS
RBIFMS
DSPCK
DSPR
ASPI_CLK
ASPI_MOSI
SPIAADC_CS
6M_BCLK
DAX_MREC
DAX_AF
96K_FRM
/ACAL
DAX_USB
DAX_TIF
SPIBADC_CS
BSPI_MOSI
BSPI_CLK
48K_FRM
3M_BCLK
DBX_REC
DBX_USB
/BCAL
AHSK0
ADSPX
AHSK1
DARSV1
DAVOX
AVSQ
ANSQ
CTFL
ARTD
ATND
DBRSV2
BDSPX
DBRSV1
BHSK0
BHSK1
BVSQ
BNSQ
BTND
BRTD
DBX_IF
DBR_IF
DBX_AF
220
R82
220
R81
220
R91
EP93
MMZ1608Y102BT
EP95
MMZ1608Y102BT
EP94
MMZ1608Y102BT
EP92
MPZ1608S221A
EP96
MPZ1608S221A
EP97
EP101
EP102
EP103
EP105
EP107
EP109
EP111
EP113
EP115
EP117
MMZ1608Y102BT
EP127
MMZ1608Y102BT
EP104
MMZ1608Y102BT
EP106
MMZ1608Y102BT
EP108
MMZ1608Y102BT
EP110
MMZ1608Y102BT
EP112
MMZ1608Y102BT
EP114
MMZ1608Y102BT
EP116
MMZ1608Y102BT
EP118
0.01
C45
0.01
C65
0.01
C97
0.01
C96
0.01
C81
0.01
C82
0.01
C104
0.01
C106
0.01
C108
0.01
C110
0.01
C112
0.01
C114
0.01
C116
0.01
C118
0.01
C115
0.01
C113
0.01
C117
0.01
C111
0.01
C109
0.01
C107
0.01
C105
0.01
C103
0.01
C102
0.01
C101
MPZ2012S221A
EP131
MPZ2012S221A
EP132
SN74LVC3G34DCUR
IC186
1
2
3
4
5
6
7
8
0.001
C182
10K
R172
150K
R174
ADP2370ACPZ
IC171
1
VIN
2
FSEL
3
EN
4
SYNC
5
FB
6
PG
7
SW
8
PGND
9
10K
R171
56K
R173
MPZ2012S601A
EP171
10
C172
10
C173
10
C171
+1R1VB
+3R3V
+1R1VA
+1R1VB
DSP-2
SHORT
CP402
SHORT
CP301
SHORT
CP401
SHORT
CP302
CR-939
X181
1
VCONT
2
GND
3
OUT
4
VCC
MMZ1608Y102BT
EP2
220
R8
220
R9
220
R26
220
R28
EP30
MMZ1608Y102BT
EP31
MMZ1608Y102BT
EP1
MMZ1608Y102BT
EP3
220
R10
220
R24
J1
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
3183
MP151
1
2
3
4
3183
MP152
1
2
3
4
10U
L151
DSP UNIT (DSP-1)
10U
L171
10
C154
10
C174
22
R197
22
R202
22
R4
22
R6
22
R13
22
R15
22
R19
22
R21
22
R23
22
R5
22
R7
22
R12
22
R14
22
R16
MMZ1608Y102BT
EP18
22
R20
22
R22
22
R25
22
R27
22
R29
22
R83
22
R85
22
R89
22
R84
22
R86
22
R88
22
R90
22
R120
22
R122
22
R124
22
R126
22
R128
22
R119
22
R121
22
R123
22
R125
2.7U
L172
2.7U
L152
220
R192
68
R194
J182
100 CE-LH
C133
22
R98
22K
R183
68
R188
CLK24M_B
0
R198
DRESD
DSPCK
ADSPX
ADSPCR
ADSPCX
AHSK0
AHSK1
AVSQ
ARTD
ATND
DAVOX
DARSV1
DSPR
FRWT
BDSPX
BDSPCR
BDSPCX
MDAT
MCK
DRESH
RASTB
RBSTB
MIXBV
MCK
RBSTB
MIXAV
MCK
RASTB
MDAT
DRESH
RAAGCV
RAAGC_DET
MDAT
DRESH
RBAGCV
RBAGC_DET
DBRSV2
DAX_TIF
BSPI_MOSI
SPIBADC_CS
DAR_MIC
96K_FRM
6M_BCLK
DR_AF
DAR_IF
/ACAL
DAX_AF
ANSQ
CTFL
DAX_MREC
DAX_USB
BRTD
RBIFMS
BHSK1
BTND
BSPI_CLK
BSPI_MISO
DAR_MOD
BHSK0
BDSPCR
BVSQ
BDSPX
3M_BCLK
DSKY
BNSQ
AVSQ
BDSPCX
DBRSV1
48K_FRM
DBX_REC
DSPCK
DSPR
DRESD
FRWT
ADSPX
ADSPCX
ADSPCR
RAIFMS
AHSK0
AHSK1
DARSV1
DAVOX
ARTD
ATND
ASPI_MISO
ASPI_MOSI
ASPI_CLK
SPIAADC_CS
/BCAL
DBX_USB
CLK24M
48K_FRM
DR_AF
DBX_IF
DBX_REC
DAR_MOD
DAX_MREC
DBX_IF
DBR_IF
DBX_AF
RAIFMS
RBIFMS
DBRSV1
DBRSV2
BTND
BHSK0
BHSK1
BVSQ
ANSQ
CTFL
DSKY
BRTD
BNSQ
MIXAV
MIXBV
DAR_MIC
DAX_TIF
/ACAL
/BCAL
6M_BCLK
96K_FRM
CLK12M
DBR_IF
DAR_IF
RBIFMS
RAIFMS
RBAGC_DET
RAAGC_DET
ASPI_MISO
ASPI_CLK
ASPI_MOSI
SPIAADC_CS
DAX_AF
DAX_USB
RAAGCV
BSPI_MISO
BSPI_CLK
BSPI_MOSI
SPIBADC_CS
DBX_AF
DBX_USB
RBAGCV
CLK12M
3M_BCLK
CLK24M
GND
+3R3V
+3R3V
+11V
GND
+11V
[MCLK24M]
TO LOGIC J1391
TO LOGIC J1301
TO LOGIC J1351
TO RF-B J1801
TO RF-A J1801
TO MAIN J131
TO MAIN J133
+11V
+15V
+11V
+11V
+15v
+11V
+3R3V
+11V
-12V
1.1
1.1
3.4 V
V
t
40.7 nsec
(24.576 MHz)
*:
Refer to the PARTS LIST for the value and name of component.