A schematic diagram. Shared as “دستورالعمل_آپگرید_و_تنظیمات_دستی_مورد_نیاز_براي_نرم_افزار_ورژن_29.pdf” — a .pdf file, 3.33 MB.
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 @tvsoftwareworld. 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.
Any PDF readerSumatraPDFFirefox / ChromeFlexBV (links PDF to boardview)