Letterprinter 100

This document is the Operator Guide for the Letterprinter 100 series, a microprocessor-controlled dot-matrix printer. It provides comprehensive instructions for daily operations, including:

• Controls and Indicators: Detailed descriptions of printer controls (power, voltage, paper adjustments) and indicator lights (POWER/FAULT, DSR, DPS).
• Installation: Procedures for installing ribbons and loading various paper types, including friction feed and tractor feed forms.
• Operator Selectable Features: Instructions for configuring communication switches and using the self-test functions to verify operation.
• Maintenance and Troubleshooting: Guidelines for basic care, a troubleshooting checklist for common issues, and procedures for using built-in self-tests (such as loopback tests) to diagnose problems.
• Accessories and Ordering: A list of available supplies (ribbons, paper) and accessories, along with instructions on how to order them from Digital Equipment Corporation.