Icom IC-7400 Service Manual page 62

• BOTTOM VIEW (S-LOGIC BOARD)
J501
10 5VL
9
PB1A
PB1A
MCHA
MCHB to PBT
PB2A
PB2B
board J1
GND
2 GND
1
GND
14 8
1 7
7
1
8 14
J604
J502
GND
1 5VL 10
GND 9
MUP GND
GND
GND
MDN
GND
GND GND
4
RDN
2 5VL
RUP 1
to MAIN DIAL
to RIT board J1
J303
1 CFL-
NC
to DISPLAY
NC board DS1002
4 CFL+
to DISPLAY board J1001
22
2
J301
1
21
J302
22 GND
GND 21
GND
PB2B
PB2A
KIOI
TRAK
TUNK
ANTK
to DISPLAY
NRK
APFK
board J1002
DOTK
DSHK
MUD
KYSL
RITL
PWRL
MIGL
APFL
NRL
2 RFL
AFL 1
2
J601
1
J507
1 GND
GND
DASH
GND
9 PAFO
to PHONE board J3
J508
1 MIC
MUD
MSEND
MMICE
9 NC
to MIC board J2
22
to MAIN
unit J180
21
9 - 2
2
GND
DOT
PHNL
PAFE
PAFE 10
M8V 2
SQLS
GND
PAFO
NC
10