DEC LANcontroller 601 Problem Solving

This document, "DEC LANcontroller 601 Problem Solving," is a guide for troubleshooting issues related to the DEC LANcontroller 601, specifically focusing on the Network Interface Card (NIC) and Ethernet connectivity.

Key aspects of the document include:

• LED States: It provides a detailed explanation of the Line Card LED states (e.g., Slow flash, Fast flicker, READY, HOTSWAP, FAULT, ATTENTION) and their significance for diagnosing the NIC's status.
• Problem Solving Flowchart: A central flowchart guides users through a diagnostic process, starting with observing the NIC's LED state and leading to specific tests or actions.
• Loopback Tests: Detailed instructions are provided for performing module loopback tests on both the Ethernet cable and the NIC itself, using a dedicated loopback connector (H4080) to check for faults.
• Component Replacement: It outlines when and how to replace faulty components like the NIC or the Ethernet cable, explicitly stating that certain procedures should only be performed by service personnel.
• References: The document frequently refers to other manuals (e.g., Installation and Service Manual, DEC Network Integration Server Problem Solving, Cabling Information and Specifications) for more in-depth information and specific procedures.