VIVITAR - Vivitar 285 parts

This comprehensive illustrated parts list is the definitive reference document for the Vivitar 285 electronic flash unit (part number 3900008). Published in November 1978, this technical manual covers all mechanical and electronic components of the device. The publication features a complete series of numbered, detailed exploded views enabling precise identification of each flash component. Contents include the main body assembly, sensor assembly, circuit board assemblies A and D, board B, and board C with related components. Complete schematic diagrams and internal connection layouts provide comprehensive technical documentation. A practical instruction section guides users on locating part reference numbers in the exploded drawings and ordering replacement parts. General specifications for the flash unit are provided: flash duration ranging from 1/1000 to 1/30000 of a second, adjustable illumination angles depending on optical configuration, 6000K color temperature, and synchronization capabilities via hot shoe and PC sync cord. Essential for maintenance technicians, equipment repair specialists, and vintage photography enthusiasts seeking to restore or service this iconic electronic flash model.