G848

This document is a proprietary schematic (copyright 1971 by Digital Equipment Corporation) for a Motor Control circuit (drawing number CS 6848-0-1), explicitly intended for test and maintenance purposes only.

The main section presents a detailed electronic circuit diagram, illustrating the motor control system with various components including transistors (e.g., 2N4920, 2N3791, DEC3715), diodes (e.g., D672, 1N4001, 1N758A Zener), resistors, and capacitors. It shows power inputs (+38V for the motor, +5V, -15V) and control signal inputs (e.g., OSC Ø, OSC 1, OFF).

Accompanying the schematic is a comprehensive parts list (Bill of Materials), detailing the quantity, designation, and description for all components, ranging from electronic parts to mechanical hardware like screws, spacers, nuts, and handles. The document also includes a transistor and diode conversion chart for Digital Equipment Corporation's internal part numbers to standard industry designations, and a supplementary diagram likely showing component layout or specific interconnections.