VIVITAR - Vivitar 285 parts

This comprehensive illustrated parts list is the definitive reference for servicing and restoring the Vivitar 285 electronic flash unit (part number 3900008). Published in November 1978, this technical manual provides complete mechanical and electronic component documentation for the entire flash assembly. The document features detailed numbered exploded views that enable precise identification and sourcing of replacement parts, including the main body assembly, sensor assembly, and circuit board assemblies A, B, C, and D with all associated components and connections. Complete schematic diagrams and internal wiring layouts accompany the visual references, supporting both disassembly and repair work. A practical instruction section walks technicians through locating part reference numbers within the exploded drawings and ordering correct replacement parts. Flash specifications include a duration range from 1/1000 to 1/30000 of a second, variable illumination angles depending on optical configuration, 6000K color temperature output, and dual synchronization via hot shoe and PC sync cord. Essential for maintenance technicians, equipment repair specialists, and vintage photography enthusiasts seeking reliable technical guidance to restore or service this iconic electronic flash.