Icom IC-7400, Service Manual, Page: 67 / 92

1
128
38
39
64 65
102
103
1
5
10
6
DA
T
A
EXT SP
REMO
TE
SEND
ALC
A
CC(2)
A
CC(1)
PPWS 1
29
2
to PA
unit J5
30
J120
PFSB
PMCK
P5V
THML
P8V
PT8V
PVRF
GND
PICL
P14A
P14V
P14V
P14V
P14V
PDRS
PMDT
P5V
PH5V
P8V
GND
GND
FVFR
PGND
PICH
P14A
P14V
P14V
P14V
PHV
1
2
to S-LOGIC
board J601
22
21
J180
FSPS
PAFE
FLMF
FDRS
SQL
MICE
GND
GND
5VL
GND
GND
PAFO
FLFM
GND
FPWK
SEND
MIC
-8V
GND
5VL
8V
14V
J140
1
2
to CTRL
unit J7
22
21
CIKY
GND
GND
GND
CFOR
GND
GND
C5V
GND
GND
C14V
CIST
CANT
CDRS
CREF
GND
C-8V
C5V
NC
CT8V
C14V
C14V
1
29
2
to DSP
unit J902
30
J1000
GND
GND
DRQW
DCK
GND
DRQR
DRBY
GND
CTFL
TOFF
VSQL
NC
GND
DSKY
DRES
NC
GND
DWBY
DDTW
GND
DDTR
DSTR
GND
NSQL
RTDT
DCBY
NC
GND
DSST
GND
4
to CHASSIS J1
1
J761
EGND
E14V
EST EKY
21
1
22
2
to RF unit J1001
J160
CON2
PD
A
T
PST4 PST2
LDRS UNLC
GND
5V 8V
GND
14V
PCK
PST5 PST3 PST1
GND GND
5V
GND
8V
14V
FCNT
2
8
1
to optional
unit UT-102
7
J1920
SSTB
MCK_UT
SPCE
SPCH
MDAT_UT
SBSY
5VL
GND
21
1
22
2
to DSP unit J901
J1001
GND
GND
DRAF
GND
MONI
GND
8V
GND
GND
GND
DRIF
DTIF
GND
GND
GND
DAGC
GND
8V
GND
DTAF
GND
GND
22
to RF unit J2
21 1
2
J100
-
8V
GND GND GND GND GND
AG
C
TNV1
RSKY
RDRS RMDT
14V
8V
T8V
R8V
5V
ALC
TNV2
R
TXS
DRIV
RBST
RMCK
GND
MF+
J802
2
to CHASSIS MF1
1
2 1
to CTRL
unit J13
P
AFE
SSP
J741
from RF unit J261
2IF
P261
1
2
to RF unit J1601
J400
3LO
GND
1
4
8
5
1
4
8
5
1
10
20
11
1 7
14 8
1 8
16 9
1 7
14 8
D550
EP3
W500
C364
9-9 MAIN UNIT
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