LP37 Line Printer

This document serves as a comprehensive user's guide for the LP37 Line Printer, intended for Digital customers and Field Service personnel. It covers the printer's introduction, operational procedures, troubleshooting, maintenance, and programmer reference information.

The manual begins with an introduction to the LP37 Line Printer, detailing its hardware, general description, and specifications including electrical, environmental, performance (print speed, character spacing, paper advance), and physical dimensions. It highlights key features such as paper handling, interfaces, a digital meter package, and the Vertical Format Unit (VFU). Various options are presented, including different printer configurations, country-specific kits, character bands (e.g., 64-character, 96-character, OCR-B, Katakana), and ribbon types.

The operation section guides operators through using the printer's controls and indicators. It provides detailed instructions for loading paper of various sizes, adjusting paper tension, removing and replacing ribbons and print bands, configuring printer settings, and running self-tests. It describes the functions of the main operator control panel, rear control panel, and the digital meter package, which displays power-on time, print time, line count, and ribbon usage.

Troubleshooting and maintenance information is provided to help resolve common issues. This includes a basic troubleshooting chart for operator-level problems and a list of resettable fault conditions with their definitions and corrective actions. It also outlines nonresettable fault conditions that require service from Digital Field Service. The maintenance section details recommended operator duties and frequencies for cleaning various printer components to ensure optimal performance.

Finally, the programmer reference section explains the control codes used with the LP37 Line Printer, including ASCII and hexadecimal codes for functions like line feed, form feed, carriage return, and vertical tab. It describes the operation of the Electronic Vertical Format Unit (EVFU), providing information on its data format, channel commands, line count codes, and examples for setting up and printing EVFU files to control print formats.