Paper Tape Reader/Punch

This document provides a comprehensive collection of engineering drawings and circuit schematics for the Digital Equipment Corporation PC04 and PC05 Paper Tape Reader/Punch units. Included are drawing indices, unit assemblies, parts lists for modules, and detailed circuit diagrams for components such as the photo transistor amplifier, solenoid drivers, punch and reader controls, and power regulator cards. The document also includes engineering specifications and instructions for assembly and cabling.