Power Supply Installation Card

This installation card outlines the step-by-step procedure for adding an H7899-AA 675 W redundant power supply to an AlphaServer DS20. The document covers:

• Preparation: Powering down the system and removing the pedestal cabinet covers.
• Hardware Removal: Removing the existing fan tray assembly to access the power compartment.
• Installation: Positioning the new power supply unit and securing it with screws to the internal frame.
• Cabling: Detailed instructions and a diagram for connecting the power supply harness to the Power Distribution Module.
• Verification: Procedures to verify the new power supply installation status using the 'show power' command for DIGITAL UNIX, OpenVMS, and Windows NT systems.