SIGMA - Sigma 103EC2 Parts

Official parts catalog for the Sigma 180mm F3.5 EX APO MACRO HSM macro lens designed for Canon AF camera bodies. This comprehensive parts list and reference guide delivers the technical information needed for accurate component identification, assembly layouts, and spare part ordering for this professional-grade optical system.

The service manual features detailed exploded diagrams across multiple pages with numbered component references that map each part to its position within the lens assembly. Technical drawings clearly show how internal optical elements, focus drive mechanisms, and control systems fit together, from the front lens groups through to the rear helical mounts and electrical connections.

A complete parts inventory is provided with official Sigma reference numbers alongside bilingual English and Japanese part designations, including quantities and subassembly notes. Cross-references guide you to relevant pages for additional specifications on components supplied as complete units, allowing technicians and owners to identify and order exact replacements with confidence from authorized Sigma distributors.

This repair parts catalog serves optical technicians, professional service centers, and lens owners who need to understand the internal construction of this macro lens and source genuine replacement components. The precise technical references eliminate guesswork when ordering parts, ensuring correct compatibility and proper restoration of lens functionality.