Icom IC-718 Service Manual Addendum page 23

January 2013
• LOGIC-A UNIT
(BOTTOM VIEW)
R35 D48
D49
D50
D51
D53
D54
D55
R9
5
Q105
30 20 10 2
J7
J7
25 15 5 1
R119
R135
30
J7
29
to MAIN unit J4201
• PHONE UNIT
(BOTTOM VIEW)
2
IC5
J1
W42
R56
R55 W41
W1
R44
R3
R4
R5
R212
R8
C2
4
J1
GND
SEN2
to SENSOR
board
SEN1
+5V
R196
1
Q1 Q2
R197
4 L103
L101
30 20 10 2
J6
L102
25 15 5 1
J6
L104
2
29 2 15
J6 J9
30 1
16
1
to MAIN unit J4401
C114
R17
R16
L2
R15
IC12
3
R19
J9
J9
1
2
to PLL unit J3
• MIC UNIT
(BOTTOM VIEW)
The combination of top side and bottom side of this
IC7
R59
R63 D47
R62
J4
J3
J3
9 1
J3
2
10
to VR board J1
• VR UNIT
(BOTTOM VIEW)
NON-
CLIC
19
1
J4
GND
1
GND 2
8V
UD
SQLS
SEND
AFO
GND
9 MICE
MIC 10
to MIC board J2
C47
J5
1 GND
2
AFE
AFE
AFE
AFO
AFO
AFO
ESPO
9 ESPO
10
6 ESPO
J5
to PHONE board
J2
CLIC