![background image](http://html.mh-extra.com/html/icom/ic-7400/ic-7400_service-manual_612265062.webp)
9 - 2
1
2
9
to PHONE board J3
10
J507
GND
GND
DASH
GND
PAFO
GND
DOT
PHNL
PAFE
PAFE
1
2
9
to MIC board J2
10
J508
MIC
MUD
MSEND
MMICE
NC
M8V
SQLS
GND
PAFO
NC
22
to DISPLAY
board J1002
21
2
1
J302
GND
GND
PB2A
TRAK
ANTK
APFK
DSHK
KYSL
PWRL
APFL
RFL
GND
PB2B
KIOI
TUNK
NRK
DOTK
MUD
RITL
MIGL
NRL
AFL
1
to DISPLAY
board DS1002
4
J303
CFL-
NC
NC
CFL+
1
4
to MAIN DIAL
J604
5VL
MUP
MDN
GND
1
2
21
to MAIN
unit J180
22
J601
14V
8V
5VL
GND
-
8V
MIC
SEND
PWRK
GND
LFMD
P
AFO
GND
GND
5VL
GND
GND
MICE
SQL
SRES
LMFD
P
AFE
SRS
1
2
to DISPLAY board J1001
21
22
J301
GND
-
8V
LOCK
SRES
MDNK
PB1A
MSB
LMFD
MSA
BKL
5VL
8V
SPEK
-
8V
MUPK
PB1B
GND
LFMD
RSB
RSA
GND
5VL
10
2
9
1
to PBT
board J1
J501
5VL
PB1A
MCHB
PB2B
GND
PB1A
MCHA
PB2A
GND
GND
10
2
to RIT board J1
9
1
J502
GND
GND
GND
GND
5VL
GND
GND
GND
RDN
RUP
1
8
14
7
1
7
8
14
• BOTTOM VIEW (S-LOGIC BOARD)
Summary of Contents for IC-7400
Page 1: ...HF VHF TRANSCEIVER i7400 SERVICE MANUAL ...
Page 63: ...to S LOGIC board J303 DS1002 9 2 DISPLAY BOARD TOP VIEW 9 3 for free by RadioAmateur eu ...
Page 72: ...9 12 1 9 18 10 BOTTOM VIEW RF UNIT for free by RadioAmateur eu ...
Page 74: ... BOTTOM VIEW CTRL UNIT 9 14 for free by RadioAmateur eu ...
Page 76: ... BOTTOM VIEW TUNER UNIT 9 16 for free by RadioAmateur eu ...
Page 78: ...9 18 BOTTOM VIEW PA UNIT for free by RadioAmateur eu ...
Page 92: ...1 1 32 Kamiminami Hirano ku Osaka 547 0003 Japan S 13811HZ C2 2002 Icom Inc ...