CHINON - Chinon CP5 TwinProgram Service

Comprehensive service manual for the CHINON CP-5 Twin Program SLR camera, a professional 24×36mm system camera with dual-mode Program AE and aperture-priority automatic exposure control. This 77-page technical reference is designed for experienced service technicians and repair specialists working on this compact but feature-rich SLR platform. The manual guides you through complete disassembly of the camera body—top, bottom, and front covers, mirror housing extraction, shutter and film advance mechanism removal—with step-by-step procedures for accessing internal assemblies. You'll find detailed coverage of the electromagnetic shutter mechanism including synchronization contact adjustment, full mirror housing operation with combination magnet and diaphragm control, film advance and rewind mechanics, and critical focus adjustment procedures (both flange-back focus and viewfinder collimation). The electronics section provides complete circuit schematics for the microprocessor control IC (µPD49C), the bipolar analog IC (MSA421RS), and the MOS digital IC (µPD7001C), supplemented by detailed timing charts, signal flow diagrams, and Program 1/Program 2 exposure curves with corresponding EV and light value reference tables. A dedicated parts listing section with exploded diagrams and factory part numbers covers all major and sub-assemblies, essential for ordering replacement components. The troubleshooting guide systematically maps electrical and mechanical symptoms to their root causes, while factory adjustment specifications and measurement procedures ensure proper calibration and performance validation after service work. An indispensable workshop manual and repair guide for CP-5 maintenance and restoration.