Icom IC-718 Service Manual page 41

SECTION 9 BOARD LAYOUTS
9-1 MAIN UNIT
• TOP VIEW
to FILTER unit J1 to PA unit J6
10
9
T13V
P2
J4001 GND
REF
L3
FOR 1st LO
L5
L4
W7 W6 from PLL unit
L2
L1 P4
L6
2
1
J201 1LOE 2
P1
1LO 1
J1 CHASSIS
T13V 10
GND
REF
2
1LOE
L3
FOR
L5
1LO 1
L4
L2
L1
L6
1
1
5 15
25
2 30
10 20
J4201
1 29
2 30
to LOGIC unit J7
to FILTER unit J3
P6
SEND
ALC
W11 W10
P5
CHASSIS
J701
1
5 15
25
2 30
10 20
2 1
J4401
1 29
J401
from PLL unit
P2
2nd LO
2 30
to LOGIC unit J6
9 - 1
ACC J4651
8V 1
GND 2
BDT 4 2
4 3 1
SEND 3
13.8V 8 8 7 6 5
7
AFO 12
12 11 10 9
BFO
MOD 11
13 from PLL unit
SQLS 13
P5
J2001 BFOE
FSKK 10
ELEC-KEY
KEY 6
BFO
BAND 9
ALC 5
13
9 10 11 12
5 6 7 8
1 2 3 4
J3601
3 2 1
RED BLACK
3 1
FAN MOTOR MF1
The combination of this page and the next page shows
the unit layout in the same configuration as the actual
P.C. Board.
Optional
unit UT-106
1
9 1
SPO
SPO
J2603
J4502
SPE
SPE
2
1
2 EXT SP
10
2 REMOTE
SPE
ESPO
CIV
SPO
1
SPO
CIVE
2
SPE
8
1
1
1
SPEAKER
SP1
Optional
unit UT-102
8
7
GND SPCH
8
J2501 5V SPCE
SBSY MC
MDA SST 2
8 1
1
2
J4101
TEMP
KEY
STRT 1 TEMP
HV
KEY 2
STRT
ICH
HV
PAT8
ICH
ICL PAT8
14V
ICL
14V
14V 14V
14V
14V
14V
14V
14V 14V
PWS
PWS
GND
GND
15 GND
15
GND
GND 16
GND
16
to PA unit J3
1
J2601 DOUT
DOE
1
J2602