CANON - canon camera eos650 20

Comprehensive service manual for the Canon EOS 650 and EOS 620 35mm SLR cameras. This technical reference is the complete workshop manual for authorized service technicians, covering full disassembly and assembly procedures, mechanical adjustments, and electrical calibration of both models. The manual is structured in three main sections: the first covers external component removal, front panel disassembly, shutter unit access, and front panel reassembly including mirror mechanism reinstallation; the second addresses all electrical adjustments performed via the EOS Tool, including shutter speed calibration, AE (autoexposure) fine-tuning, autofocus sensor alignment, film advance settings, and inhibit voltage configuration; the third provides general specifications, functional block descriptions, detailed electrical schematics, and complete wiring diagrams for reference. Each procedure is supported by technical illustrations, component color identification guides, and specific instructions for using specialized service equipment such as the FS-5300 Shutter Tester and EV-500 Exposure Meter. The manual includes comprehensive troubleshooting guidance and adjustment procedures for shutter timing accuracy, exposure compensation, AF positioning, and user preference defaults. An essential repair and maintenance reference for anyone servicing these professional-grade SLR systems.