BELL & HOWELL - bh projector 266a

Comprehensive service manual for the Bell & Howell Design 266A 8mm autoload projector. This technical document provides detailed instructions for operation, maintenance, and repair of this automatic film projector. It begins with an introduction to autoload threading principles and explains the complete film path through the projection mechanism. The manual features dedicated sections on disassembly, reassembly, and adjustments with precise step-by-step instructions for each maintenance procedure. A detailed lubrication table specifies application points and lubricant types required for proper operation. Final testing procedures encompass safety shutter operation test, optical alignment verification, and full operational testing. An extensive troubleshooting guide addresses common issues including picture flicker, film scratches, soft focus, jumpy images, noisy operation, film spillage, and auto-threading failures, providing probable causes and remedies for each problem. The illustrated replacement parts catalog, organized by figure references and part numbers, enables technicians to quickly identify and order replacement components. Detailed wiring diagrams and technical schematics support the instructions for comprehensive understanding of the projector's mechanical and electrical systems.