Icom IP501M Service Manual page 14

■ JIG
[JIG cable 1]
MICROPHONE
CONNECTOR
(Front view)
8..........1
(MIC)
to pin 6
(GND)
to pin 7
MODULAR CABLE
[JIG cable 2]
(PTT)
to pin 4
(AFO)
to pin 3
33 kΩ
PTT
4.7 µF
OPC-2407
to pin 8
to pin 7
to pin 22
AC millivoltmeter
(1 mV to 5 V)
Audio generator
(300~3000 Hz/1~500 mV)
+
Audio generator
(300~3000 Hz/1~500 mV)
(EXMOD)
+
4.7 µF
(GND)
AC millivoltmeter
(1 mV to 5 V)
(AFO)
5-2
+ −
AC millivoltmeter
(1 mV to 5 V)
+ − + −
AC millivoltmeter
(1 mV to 5 V)
+ −
+ −
+ −