Digital Alpha XL Family

This user's guide provides comprehensive information for operating, configuring, maintaining, and troubleshooting the Digital Alpha XL Family system, which includes both Model 4 (XL 233 and 266) and Model 5 (XL 300, 366, and 433) versions.

The document begins with initial setup instructions, covering system startup, restart, and shutdown procedures, along with recommendations for posture and work habits, identifying correct AC power cords, and managing preloaded operating system software (Windows NT). It offers a system overview, detailing components like the motherboard, keyboard, system controls, indicators, ports, and connections, highlighting the PCI and SCSI architectures.

A key section focuses on system configuration, explaining how to use AlphaBIOS firmware (for Model 5 systems) to manage boot options, display system information, set up hard disks, and configure various system parameters. For Model 4 systems, it refers to using the ARC Console for similar configuration tasks, including setting date and time, environment variables, SCSI termination, and PCI parity.

The guide provides detailed instructions for installing system options, such as additional memory modules (SIMMs), expansion boards, and mass storage devices (hard disk, CD-ROM, tape drives) in both upper and lower drive bays, along with crucial information on SCSI bus length, addressing, and termination. Troubleshooting steps are outlined for general system issues, disk drives, monitors, keyboards, and mice, including specific error beep codes for different models and diagnostic LED interpretations for Model 4 systems.

Appendices deliver technical specifications (e.g., system dimensions, environmental conditions, power requirements, connector pinouts, motherboard jumpers), system care guidelines (cleaning, moving), device mapping information (I/O address map, interrupt assignments, DMA channel assignments), firmware update procedures, and instructions for installing Windows NT. An equipment log is also included to record hardware and software details for support purposes.