R215F Expander Addenda to Customer Hardware Information

This document, titled "R215F Expander Addenda to Customer Hardware Information," provides comprehensive installation and operational guidance for the R215F expander. It is specifically tailored for various Digital Equipment Corporation (DEC) systems, including:

• MicroVAX II Systems
• MicroVAX 3300/3400 Systems
• MicroVAX 3500/3800 Systems
• DECsystem 5400 Pedestal Systems (210QS)

Key aspects covered include:

1. Installation: Procedures vary depending on the system and whether the expander is factory-configured or an add-on. While some systems allow customer installation (e.g., MicroVAX 3300/3400, DECsystem 5400 210QS, and specific factory-configured MicroVAX II/3500/3800), add-on installations for previously installed MicroVAX II, 3500, or 3800 systems require a Digital service representative or qualified self-maintenance customer. Installation steps detail site preparation, unpacking, positioning the expander, connecting DSSI and power cables, numbering Integrated Storage Elements (ISEs), and attaching front panels.
2. Operation: This section, consistent across all system addenda, covers operating the expander's sliding front window (including key positions and access levels), removing and attaching the front panel, turning the expanded system on/off, managing RF-series Integrated Storage Elements (ISEs) (including their functions and controls like "Fault," "Write-Protect," and "Ready" indicators), and understanding the power supply's circuit breaker and "DC OK" light.

The document emphasizes important cautions, such as proper system shutdown to prevent data loss and verifying power requirements to avoid equipment damage. It is intended to be added to the customer's existing Customer Hardware Information binder.