SPT - 1972

November-December 1972 issue of the Society of Photo-Technologists Service Notes, pages 483–498. This technical service manual covers maintenance and repair procedures for Polaroid instant cameras, offering the detailed guidance needed by technicians working on Color Pack models in the field. The Polaroid section addresses parts availability policies and provides direct technical contacts for shutter and converter repairs. A comprehensive visual and mechanical checkout guide walks through shutter housing disassembly, magnet and bobbin assembly inspection, blade mechanism operation, and spring tension adjustment—the core procedures for diagnosing shutter faults. Coverage of Color Pack models 100, 102, 220, 230, 240, 250, 340, 350, 103, 104, 210, 125, 320, and 330 documents baseplate assembly variants and battery system configurations specific to each model. Technical specifications detail switch operations, electrical contact layouts, and shutter speed calibration methods essential for accurate repair. A complete bellows replacement section provides step-by-step access instructions and battery interlock modification procedures. The CP-11 flash cube holder repair guide describes safe disassembly techniques designed to preserve internal connector strips and components during service work. This workshop manual serves as an authoritative reference for professional camera repair and maintenance.