NIKON - Nikon N4004 Service Manual

Comprehensive service manual for the Nikon F-401 (N4004), an autofocus single-lens reflex camera introduced for the American market. This workshop repair manual delivers the technical depth needed by professional technicians and serious repair specialists working on 35mm SLR equipment. The document covers complete operational specifications and detailed mechanical mechanisms throughout the camera body. The F-401 features the AP2 autofocus detection system using phase-contrast methodology, motorized autofocus lenses with dedicated AF circuitry, and TTL metering integrated with autofocus operation. Four exposure modes—Program (P), Shutter Priority (S), Aperture Priority (A), and Manual (M)—are documented alongside the built-in flash system with automatic TTL flash synchronization. Comprehensive sections address the motorized film advance and rewind systems, the 24×36mm frame format on DX-coded and standard 35mm film cartridges, and the Nikon F-mount interface. The electronically controlled Seiko MFD focal-plane shutter receives detailed treatment, as do the core electronic systems: CPU, HDIC, and EEPROM components. Autofocus servo operation, lens mount electrical contacts, and their integration into the camera's control architecture are thoroughly explained. Model variants FAA21051, FAA21251, and FAA21151 are all covered. An essential reference for anyone performing maintenance, troubleshooting, or component-level repair on this camera platform.

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