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Music Man Schematics typo?

In comparing the schematic for my 2475-150  and the Transformer diagram attached in the same PDF I noticed that the schematic shows a OR-Y connection (see image 1 attached). This OR-Y connection does not show on the Transformer diagram (image 2 attached) however does show a R-Y connection that doesn't show up on the schematic. 
Can I assume that this is just a typo on the schematic with an O added to the RY?

Full Name
Micajah Smithson
Music Man Equipment
Music Man112RD-100-EVM, Musicman RD100, Musicman 210HD, Silvertone 1484, Gretsch 2156 Playboy, VOX Royal Guardsman, Harmony H303, Tiesco Melody B-3

Member for

11 years 9 months

MidCenturyAudio Thu, 04/16/2026 - 17:08

PS - this also occurs on the 2100-150 schematic.