DURST - Durst 401 MK2 Color Head Manual

Comprehensive service manual for the DURST 401 MK II Color Head, a professional color enlarging system designed to upgrade the DURST L-1000 bench enlarger for high-quality color print production from negatives up to 5 x 4 inches. This workshop manual covers detailed installation procedures, mounting kit assembly, and complete operational guidance for achieving precise color balance and optimal print quality. It includes lamp installation with critical safety protocols, filter positioning and optical system alignment, and systematic exposure testing methods. An extensive troubleshooting section addresses common faults—complete light loss, uneven illumination, color imbalance, and thermal issues—with step-by-step diagnosis and correction procedures. Technical documentation features color filtration correction tables, comprehensive parts lists, component specifications, wiring diagrams, and exploded assembly illustrations with numbered reference components. This guide serves professional laboratory operators and experienced darkroom technicians who need to master advanced color printing techniques with precision control and reliability.