VAX 6000 XMI Conversion Manual

This "VAX 6000 XMI Conversion Manual" (Order Number EK-650EB-UP-002) details the procedure for a full power and packaging upgrade of a VAX 6000 Model 200, 300, or 400 system (which uses an XMI-1 card cage) to a VAX 6000 Model 500 system (which uses an XMI-2 card cage).

Intended Audience: Digital customer service engineers.

Key Aspects of the Upgrade:

• Purpose: To convert older VAX 6000 models to a Model 500 by adding +3.3 volt power, an XMI-2 backplane assembly, and an H7206-B power and logic unit.
• Preparation: Before starting, the manual requires saving EEPROM contents and system parameters to tape, preparing the work area, and ensuring all components from the H9657-CU upgrade kit are present.

• Conversion Process: The core of the manual outlines a multi-step procedure:

  1. Removal of Existing Hardware: Disconnecting and removing the XMI-1 card cage, existing H7214 power regulators (position 3 and potentially position 2 based on revision), the H7231-N Battery Backup Unit (if present), and the H7206-A power and logic unit.
  2. Installation of New Hardware: Installing the new H7242 +3.3V power regulator, the XMI-2 card cage assembly, replacing the XTC power sequencer module, and installing the new H7206-B power and logic unit. This also involves extensive re-cabling.

• Wrap-Up & Troubleshooting: After the hardware conversion, the manual covers inserting new XMI processor and memory modules (KA65A, MS65A), installing DWMBB adapters, reattaching cabinet doors and labels, and systematically restoring power. It provides detailed guidance on interpreting H7206-B diagnostic LEDs during power-up and troubleshooting self-test failures.

• Module Handling: Appendices offer critical instructions on handling static-sensitive modules and detailed power-up troubleshooting procedures based on LED indicators.
• Part Return: Instructions are included for packing and returning replaced components to the Returns Sort Center.