BRONICA - Bronica 150PS

Comprehensive disassembly and reassembly workshop manual for the ZENZA BRONICA ZENZANON 150/4 PS lens, covering all PS and PE focal lengths from 50 to 250 mm. This detailed service guide provides step-by-step instructions for complete lens disassembly, progressing from ring removal through careful extraction of front and rear optical assemblies. The manual walks through critical operations including removal of aperture rings, barrel components, focusing mechanisms, and the Seiko #0 shutter assembly—detailing both vintage and current shutter variants. Safety guidance addresses proper handling of multicoated optical glass and safe solvent application to precision components. The reassembly section offers practical recommendations for cleaning procedures, appropriate lubrication methods, and correct application of screw-locking compounds to prevent loosening. Technical reference material includes the flat cable wiring diagram with color-coded pin functions for lens electronics, a detailed schematic of the diaphragm aperture circuit, and comprehensive lens contact function documentation. Every disassembly step is supported by annotated photographs showing exact component positioning and removal sequence. The parts list specifies individual part numbers and screw specifications throughout to ensure accurate identification during reassembly. Complete tool listing with supplier information included to facilitate professional-level service work.