VXT 2000 Model VX225 Windowing Terminal

This document serves as a comprehensive guide for the installation, servicing, and operation of the VXT 2000 Model VX225 monochrome windowing terminal.

The guide begins with an overview of the terminal's hardware, connectors, operating features, and site requirements, including its ability to connect via Ethernet or serial port and support multiple X window and terminal sessions across UNIX, ULTRIX, and VMS systems. It details the steps for unpacking and installing the terminal, connecting peripherals, and verifying the initial setup.

A substantial part of the document is dedicated to diagnostics and troubleshooting. It explains how to run built-in self-tests, interpret memory status messages, and address both hard (fatal) and soft (nonfatal) errors using on-screen codes and diagnostic LEDs. Troubleshooting tables provide specific error codes and suggested solutions for various problems, including network failures and display issues.

Maintenance procedures cover the removal and replacement of Field Replaceable Units (FRUs), such as memory modules, network modules, system logic modules, and monitor components. Safety instructions for handling internal parts and disposing of the Cathode Ray Tube (CRT) are also provided.

Furthermore, the document offers detailed instructions for aligning the video display, which includes adjusting deflection, video amplification, cutoff, and gain using specific test patterns and a radiance meter. The guide concludes with step-by-step procedures for initiating and managing user sessions on host systems, configuring display language and keyboard types, and using both mouse and keyboard navigation. Appendices offer a list of related documents, recommended spare parts, and comprehensive self-test error descriptions.