PDF bundle of Bose schematics, 1.53 MB in size, whose name lists no particular model, so the covered products must be confirmed by opening it. Such collections typically gather amplifier, power-supply and speaker-module drawings from several Bose systems. Use the relevant pages to trace power rails, locate components and follow audio signals during fault diagnosis. Match the model and board number printed on your hardware to the exact sheet used, because Bose often reused similar layouts with different values.
The button opens the matching file on RM Schematics, or a source page if it is not catalogued there yet. The original attachment is from @pdf_servicemanual. Enginerys does not host this file.
How to open a .pdf file
The standard format for schematics, block diagrams, power-sequence charts and service manuals.