Icom IC-718 Service Manual Addendum page 22

January 2013
• LOGIC-A UNIT
(TOP VIEW)
PWR
POWER
L43
L49
L48
• VR UNIT
(TOP VIEW)
AF AF
RIT RIT SHIFT SHIFT
B7564A
R2
R1
J1 J1
NON-
CLIC
CLIC
10 1
J1
to LOGIC unit J3
DS1
• MIC UNIT
RF/SQL RF/SQL
(TOP VIEW)
R4
18
R73
R72
Q70
R71
R74
MODE FIL
R46
R57
DS1
B7543B
R34
LOCK
R20
R21
C8
R31
C7
R18
D45
TS
L40
C42
IC40
R54
C40
Q103
C41
R45
R51
C5 L1
R25 R24
C6
R211
C4 R27
R101
EP2
Q106
R100
L100
IC103
R112
R106
R103
R117 R115 R179
R104
R114
C103
R2
Q3
D121 D123
D120
Q104
D122
• PHONE UNIT
(TOP VIEW)
The combination of top side and bottom side of this
R36
D31
2 3
1
R32
R33
D 2 3 D 3 3
5 6
4
D 4 3 D 5 3
8 9
7
D 6 3 D 7 3
.
0
ENT
D 8 3 D 9 3
NB
COMP
SET
D 0 4 D 1 4
P.AMP ATT
TUNER
D43
D42
CH
DN UP
J2
10 GND
AFE 9
AFE
AFE
to
AFO
LOGIC
AFO
unit J5
AFO
ESPO
2 ESPO
ESPO 1