NIKON - Nikon MB22 service manual

Official Nikon service and repair manual for the MB-22 external power regulator, engineered for Nikon F4 and F4s SLR cameras. This comprehensive technical document, published by Nikon Corporation in 1989, delivers detailed specifications and assembly information essential for professional technicians and repair specialists. The manual opens with a complete specifications section detailing all operational characteristics: compatible power sources including AC/DC converters rated 9V to 20V, external power terminals featuring the proprietary connector type (compatible with MC-11 cords), front-mounted remote control terminal, and grip electrical contacts with five-terminal configuration for power distribution, pre-release signaling, and release triggering. Technical specifications include precise dimensions, unit weight, maximum shooting speed of 5.7 frames per second when supplied with 15V DC, and mounting methodology on camera body. Extensive exploded diagram pages (Fig. 1 and supplementary pages) provide comprehensive visual breakdowns of both the MB-21G and MB-22B sub-assemblies, with precise component numbering and complete parts references. These technical schematics enable accurate identification of all internal components and facilitate systematic disassembly and repair procedures.