Icom IC-7400 Service Manual page 64

• BOTTOM VIEW (DISPLAY BOARD)
J503
22 LDV
5VL 21
KI2
KI3
KI4
KI5
KI6
KI7
XFCK
MPWK
MPRK
TXD
RXD
LOCK
SPLD
FIND
GND
GND
GND
GND
1 GND
1
GND
to TEN-KEY
board J1
J1002
1 GND
2
GND
GND
PB2B
PB2A
KIOI
TRAK
TUNK
ANTK
NRK
APFK
DOTK
DSHK
MUD
KYSL
RITL
PWRL
MIGL
APFL
NRL
21 RFL
22
AFL
to S-LOGIC
board J302
21
21
1
J505
J1001
to S-LOGIC
board J301
22
22 2
1 16
8 9
5 4
8 1
1 8
1
4 5 4
100 76
1 75
25 51
26 50
1
to MODE
board J1
2
50
51
75
76
8 5
1 100
8
5
1 4
30
31
50 51
26
25
30
31
1
100
50
51
100 81
1 80
81
80
30 51
31 50
9 - 4
1
100
81
80
8 5
1 4
5
8
1 4
8 5
1 4