BELL & HOWELL - bh projector 202

Comprehensive service and maintenance manual for the Bell & Howell Design 202 Filmosound 16mm projector. This detailed reference provides complete step-by-step disassembly and reassembly procedures for all major assemblies, supported by technical photography and exploded view diagrams. Coverage includes the amplifier, projector head assembly, film drive mechanisms, magnetic sound components, shutter mechanism, motor and governor assemblies, and both forward and rewind reel arms. A dedicated cleaning section addresses optical parts maintenance, sound head care, film handling components, and general mechanism cleaning. The repair section systematically addresses erase failures, microphone issues, input transformer problems, lamp replacement, function switch repairs, and interlock relay troubleshooting. Numbered reassembly procedures restore the projector to working condition with precise part alignment and adjustment instructions. Complete illustrated parts catalog references all serviceable components and assemblies. Supporting documentation includes electrical wiring schematics, a detailed amplifier circuit diagram with component specifications, and interlock system diagrams for comprehensive technical support.