DWTVX-Ax VME I/O Subsystem Pocket Service Guide

This Pocket Service Guide provides comprehensive information for the DWTVX-Ax VME I/O Subsystem, designed for use with DECstation 5000, DECsystem 5900, and Personal DECstation 5000 host systems.

The document details the subsystem's components:

• The PMABV-AA VME Adapter Module (installed in the host system).
• The T6000-AA VME Controller Module (installed in a separate VME subrack/enclosure).
• Various interconnect cables that link these modules.

Key aspects covered include:

1. System Overview: An introduction to the subsystem's components and general diagnostic approach.
2. Configuration: Instructions for setting jumpers and switches on the T6000-AA module to determine its role as a VME bus system controller and for configuring address ranges, especially for multiple T6000-AA modules on a single VME bus.
3. VME Test Module (P/N FC-10169-AC): Information on this specific tool used to extend diagnostic coverage, including its configuration and installation procedures.
4. Removal and Replacement: Procedures for handling the PMABV-AA and T6000-AA modules.
5. Diagnostic Tests: A primary focus is placed on diagnostic tests designed to troubleshoot the PMABV-AA module, the T6000-AA module, and the interconnect cables. This includes:
   • PMABV-AA Module Diagnostic Tests: Using a loopback connector (P/N 12-35537-01) for tests like pmabv_csr and loopback.
   • T6000-AA Module Diagnostic Tests: Including t6_csr, t6_reset, pio_exer, dma_exer, and vic_test.
   • VME Test Module Diagnostic Tests: Such as vme_access and VME Cycle Tests (VCT).
   • Power-Up Self-Tests: Automatically performed at system startup.

The guide provides step-by-step instructions for running tests, interpreting results, and identifying failing components using diagnostic flow charts and a quick reference table for error messages. It emphasizes the importance of proper module configuration and the use of specialized test equipment for accurate troubleshooting.