The nature of the schematic comes from the fact that the manufacturer does not release official datasheets to the public. Instead, these boards are sold as OEM components, forcing engineers to reverse-engineer the board to repair or repurpose it.
The controller is the proprietary part. Based on the silkscreen markings, it is labeled – likely an ASIC (Application-Specific Integrated Circuit) designed for this module. zd95gf schematic exclusive