BRONICA - Bronica ETR 40mm 50mm 150mm Repair

Comprehensive technical repair documentation for the BRONICA ETR system, covering Zenzanon lenses at 40mm, 50mm, and 150mm focal lengths. This workshop manual delivers detailed parts lists with complete reference numbers for every lens configuration, enabling precise identification and sourcing of replacement components during maintenance or restoration work.

The manual features detailed exploded diagrams for each lens assembly, with systematic numbering of all optical elements (lenses G-1 through G-8), diaphragm mechanisms, shutters, and retention systems. Technical specification tables provide quantities and commercial part numbers essential for any repair operation.

Step-by-step procedures for shutter replacement are included for both the 40mm F4 and 150mm F4 lenses, with exploded views showing complete disassembly and reassembly sequences. Electrical and mechanical component positioning is specified with precision to ensure correct installation.

This service manual functions as an authoritative reference for workshop technicians, restoration specialists, and medium-format photography enthusiasts maintaining BRONICA ETR lenses. The clearly annotated technical diagrams and exhaustive component nomenclature enable rapid parts location and provide complete structural understanding of these professional-grade lenses, making it indispensable for anyone performing maintenance or repair work on BRONICA equipment.