Troubleshooting - Ramsey Electronics FM-100 Assembly And Instruction Manual

14P. Plug your microphone into the microphone jack, and crank up the
microphone gain.
15P. Press the MIC button, verify the MIC LED turns on.
16P. Talk into the microphone; you should hear sound from the receiver
and the LED meters should indicate sound.
17P. Connect your sound source to either J5 or J6, the stereo RCA jacks.
18P. Play some tunes through the unit and make sure the controls on the
front are working.
19P. Press the AUTO AGC button once, the MIC ON LED should blink
rapidly. This indicates that the AUTO AGC mute function is enabled.
20P. Talk into the microphone and verify that the music mutes while you
talk.
21P. Press the AUTO AGC button again to turn it off. Talk into the
microphone and verify your voice is now mixed with un-muted music.
22P. The LED meters should be indicating the music level at this point.
23P. Adjust R23 and R35 so that the volume of your station on the
receiver is less than or the same as other commercial stations and that
the balance is set well. The LED displays at this point should be at an
average of 0dB.
24P. Adjust R15 until the audio quality is good and in stereo. You will
need to use your audiophile judgment for this.Generally, leaving R15 in
the center of rotation is good.
25P. Any troubles? Consult the troubleshooting section. It will help you
know where to look for mistakes.
FM-100 Page 47