If you find a bottom-layer photo but need the top diagram, mirror the image horizontally and mentally rotate components 180° (except for polarized parts). Better yet, contact the original poster to request a top scan.
: Standard designs use 1/4W resistors and polarized capacitors rated for at least 50V. Key Tronic KB 5150 Keyboard If your query refers to the KB 5150 keyboard kb 5150 schematic diagram top