BELL & HOWELL - bh projector 202 302

Comprehensive service and maintenance manual for Bell & Howell Filmosound optical-magnetic projectors, models 202 and 302. This technical reference covers complete disassembly, repair procedures, and reassembly of these 16mm projectors designed for optical projection and magnetic sound recording and playback on film. The manual includes an extensive troubleshooting chart addressing common issues such as missing optical sound, magnetic sound failures, recording level problems, and various noise conditions. Progressive disassembly procedures detail all major assemblies: amplifier, projector mechanism, drive system, sound drum, magnetic heads, stabilizer rollers, film transport, blower housing, motor governor, case components, and related subsystems. Each repair and reassembly procedure is supported by detailed exploded-view illustrations, technical specifications, and step-by-step instructions. A dedicated section on specialized Bell & Howell service tools clarifies maintenance operations. The comprehensive parts catalog lists every component with part numbers and applicability codes for different models. Includes complete electrical schematics, wiring diagrams, cleaning and lubrication procedures, critical adjustments (speed control, pressure plate positioning, magnetic head alignment), and a detailed final testing procedure to ensure optimal projector performance. Specifications for recommended service station test equipment are also provided.