NIKON - nikon finder photomic t

Comprehensive service and repair manual for the Nikon F Photomic-T Finder system (Work No. 20FD4). This technical document provides detailed disassembly and component replacement procedures for this essential viewfinder system. The disassembly and replacement sections cover over 15 critical components including ASA film speed scale assembly, T-dial knob, T-dial coupling, T-dial gear, top cover assembly, switch assembly, mirror holder assembly, aperture coupling assembly, meter assembly, functional resistor assembly, semi-fixed resistor, and CdS cells. The manual features comprehensive adjustment procedures with complete electrical parts specifications. A dedicated section outlines all necessary tools and testing equipment required for proper service and calibration work. Technical illustrations and step-by-step instructions guide technicians through complex procedures systematically. This resource is essential for professional camera service technicians and vintage camera restoration specialists seeking to properly maintain and repair this classic Nikon viewfinder system.