With the name 1N756A and a size of 50.3 KB, this PDF appears to be the datasheet for a single JEDEC 1N diode type in its A grade, filed under schematics.

Part code 1N758A is all the name provides; it matches JEDEC diode numbering with an A suffix, pointing to a component datasheet of 50.3 KB rather than a board schematic.

Indexed as a schematic, this 50.3 KB PDF is titled 1N757A, a JEDEC 1N diode number with A suffix, so it almost certainly holds a part datasheet.

The file name 1N759A identifies a JEDEC 1N diode with an A grade suffix, so this 50.3 KB PDF is probably a datasheet, catalogued here under schematics.