Icom IC F121S Stereo System User Manual


 
ANT
CHASSIS
J1
to DC cable
W2
1
4
8
5
18
169
1
8
16
9
1
to Optional unit
15
30 16
J1
GND
5V
VCC
NC
AFONO
BEEPO
NC
DET
DISC
NC
CCS
CIRQ
SO
SI
SCK
PTTI
PTTO
MCOT
MCIN
NC
BUSY
NC
SIGO
OPT1
OPT2
OPT3
GND
OPV3
OPV2
OPV1
DIM
40 2
39
to FRONT unit J2
1
J2
DAST
RMUT
MMUT
OPT3
OPT2
OPT1
BUSY
SCK
SI
SO
CIRQ
CCS
MIC
EPTT
HORNO
BEEP
PWON
8V
GND
GND
TONE
TENC
NOIS
NWC
TMUT
UNLK
PLST
CDEC
SDEC
OV12
RSSI
LVIN
TEMP
BATV
RXC
AFON
5V
CPU5
AFO
VCC
1
11
J6
DIM
HORN
GND
AFO
GND
DISC
GND
IN
GND
PTT
to Optional
cable OPC-617
SP
-
1
to
speaker
2
J7
SP+
IC3
EP3 EP2
9-2 MAIN UNIT
TOP VIEW
9 - 3