GF-480 3 ADJUSTMENTS AND CHECKS
3-1 TUNER SECTION
Use a screwdriver with a plastic or ceramic grip for all adjustment.
3-1-1 FM adjustment
1. Set the function switch to the FM position. 2. Connect the signal generator output through a 75 ohm dummy antenna to "ANT" on MAIN PCB. 3. Connect the oscilloscope to the speaker terminal. 4. Set the signal generator as listed in the alignment chart.
3-1-2 AM adjustment
1. Set the function switch to the AM position. 2. Connect the test loop antenna across the output of the signal generator. 3. Connect the oscilloscope to the speaker terminal. 4. Set the signal generator as listed in the alignment chart.
