PCB artwork for the top side of an R2 class power amplifier rated around 500 watts into a 4 ohm load, saved as a 177 KB PDF. The top layer normally shows component placement, so it helps locate output transistors, drivers, resistors and connectors when assembling or repairing the board. Pair it with the matching bottom-side copper layout for a complete picture. Open it in any PDF viewer and print at true scale, checking dimensions with a ruler before etching or comparing against an existing amplifier module.
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.