Icom IC-F4261DT Service Manual page 55

¤ JIG CABLE
OPC-1862
Add a jumper wire here
SPEAKER
(1 W/8 Ω)
AUDIO GENERATOR
(300–3000 Hz/1–500 mV)
− +
GND
SP
GND
MIC +
4.7 µF
GND
PTT
PTT
5 - 2
AC MILLIVOLTMETER
(10 mV to 10 V)
+ −
+ −