Icom IC-3200A Service Manual page 9

2.
IC-HM15 (1750Hz
Tone
Burst)
MIC
schematic diagram below
for
information regarding
its
The IC-HM15
is
equipped
with
a
1750Hz
tone burst switch
internal
wiring
and components,
for
convenient access
to repeaters.
Refer
to
the
IC-HM15
•
IC-HM15
SCHEMATIC DIAGRAM
• IC-3200A/E
MIC
CONNECTOR
(FRONT
VIEW)
ecm|
0.47
PTT
o
UP
iSz:
r
<~v.
DOWN
1
L7
^rVV
1
Q
1
470
TONE
1°
1
o
TC5082P
5
12
3
9
llnDl-4a
'riXs
XX
©
MIC
INPUT-
®
+8V
DC OUTPUT
@
FREQ,
UP/DOWN
®
AF
OUTPUT
(D
® GND
(microphone
ground)
®
GND
(PTT ground)
®
PTT
3.
IC-HM12
(Electret
Condenser)
MIC
Refer
to
the
schematic diagram below
for
information
regarding the internal wiring
and components
in
the
IC-HM12.