Bottom copper layout for the universal dos vas Matrix board, probably a dual voltage amplifier stage module, tagged langsung print for direct printing. The 130 KB PDF provides the track pattern for etching or for following signal and supply connections on an existing board. It is helpful when hunting cracked tracks or checking where feedback and bias lines run. Combine it with the top overlay file, print without scaling and verify footprints with real parts before transfer.
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.