Modified schematic for the Yamaha PA-2400 power amplifier, an 83 KB PDF marked as version 1 and apparently a copy of an earlier file. The name indicates the drawing has been altered from the original, so values may differ from factory documentation. Technicians or builders use it to follow the amplifier stages, bias and power supply, and to compare against a working unit. Treat the modifications with care and cross-check with a stock PA-2400 schematic before changing parts.
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.