Icom IC-7400 Service Manual page 63

• DRV BOARD
(BOTTOM VIEW)
MP1
MP1
• TEN-KEY BOARD
(BOTTOM VIEW)
R20
R19
R22
C7
R25
R24
to S-LOGIC
board J301
• DISPLAY BOARD
(BOTTOMVIEW)
C531 R531
C532 R532
J503
C533 R533
22 LDV C534 R534
5VL 21
KI2
KI3
KI4
KI5
KI6
KI7
XFCK
MPWK
MPRK
C535 R535
TXD
RXD C536 R536
LOCK
C537 R537
SPLD
FIND C539 R539
GND
C541 R541
GND
GND C538 R538
GND
C543 R543
1 GND
GND 1
C540 R540
C542 R542
to TEN-KEY
board J1
D1001
C1101
R1121
R1118
J1002
1 GND
2
GND
GND
PB2B
PB2A C1205 R1208
KIOI
C1206 R1207
TRAK
TUNK C1207 R1206
ANTK
C1208 R1205
NRK
APFK C1204 R1204
DOTK
C1203 R1203
DSHK
MUD
R1138 R1137
KYSL
RITL R1136 R1135
PWRL
MIGL
APFL
NRL
21 RFL
22 R1112
AFL
R1111
R1110
to S-LOGIC
R1109
board J302
R1108
R1122
R1123
J1
C2 1 LDV
5VL 2
KI2
KI3
KI4
KI5
KI6
KI7
XFCK
MPWK
to DISPLAY
MPRK
TXD
board J503
RXD
LOCD
SPLD
FIND
GND
GND
GND
GND
21
GND
GND 22
B5694A
21 1
21
1
J505
J1001
to MODE
board J1
22 2
22 2
C1006
C1010 C1009
J1001
R1104
R1014
R1017
R1042
R1013
J1001
R1018
R1049
R1050 IC1013
R1106
R1044 R1037
R1117
R1047 R1048
R1116
R1038
C1001
R554
J505
C1201
R1201
C552
C554 J505
R1202 C1202
C555
R555
• MODE BOARD
(BOTTOM VIEW)
DISPLAY
J1
B5693A
2 22
J1
to DISPLAY
board J505
1 21
The combination of top side and bottom side of this
page shows the actual confi guration of P.C. board.
IC1006
C1015 IC1007
C1011
R1004
R1211
R1209
C1013
IC1009
B5697C
9 - 4