LA 36 Engineering Drawings

This document compiles a comprehensive set of engineering drawings and instructions for the Digital Equipment Corporation's "LA 36" or "DECwriter II" system. It is structured into a drawing directory, detailed mechanical assembly breakdowns, extensive electrical schematics, and packaging instructions.

The Drawing Directory on page 2 outlines the various components and sub-assemblies covered, including the LA36 option arrangement, power schematics, logic boards, power board, and packaging instructions. It also lists unit variations for different LA36 models (CE, CF, CH, CJ, DE, DF, DH, DJ) which accommodate various power frequencies (60 Hz, 50 Hz) and voltage ranges (90-132V, 180-264V), as well as numeric keypad and paper out options.

The Mechanical Drawings (pages 3-8) provide an exploded view and parts lists for the LA36 unit assembly, detailing components such as the cabinet and power supply, keyboard bezel, frame, power board, LKØ2 and 14-key keyboard assemblies, printer mechanism, print head, ribbon chassis, ribbon drive, DC motor and encoder, disk assembly, and carriage assembly.

The Electrical Schematics (pages 10-18, 21-23, 25, 28-33, 38-44) include the main power schematic, detailed circuit diagrams for various logic boards (e.g., MPC2 through MPC9), the LKØ2 keyboard, and the LA36 power board. These schematics illustrate interconnections, integrated circuits, discrete components (resistors, capacitors, diodes, transistors), and functional blocks critical to the system's operation.

Finally, the Packaging Instructions (pages 34-35) offer a step-by-step guide with a comprehensive list of required materials (e.g., stitched tubes, foam pads, poly bags, wood skids, hex-head bolts, tape, cable ties) to ensure proper and secure packaging of the DECwriter II for shipment.