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Termorilis · 25th Feb 2021, 9:54 pm

through the old discussion I saw that to test if the pilot tone circuit works, you need to do a test: it consists of connecting the R833 and C831 of the record / playback circuit. This produces a loud hum through the speaker which should trip the relay (if the pilot tone circuit works). I would like to perform this test but I cannot read R833 and c831 because the schematic has too low a resolution. Do any of you have a higher resolution schematic?

25th Feb 2021, 9:54 pm	#22
Termorilis Triode Join Date: Jan 2021 Location: Palermo, Italy Posts: 21	Re: Schaub Lorenz Music Center 5001 through the old discussion I saw that to test if the pilot tone circuit works, you need to do a test: it consists of connecting the R833 and C831 of the record / playback circuit. This produces a loud hum through the speaker which should trip the relay (if the pilot tone circuit works). I would like to perform this test but I cannot read R833 and c831 because the schematic has too low a resolution. Do any of you have a higher resolution schematic?