Venturis GL and Celebris GL Service

This document is a comprehensive service and maintenance manual for the Digital Equipment Corporation Venturis GL and Celebris GL computers. Published in September 1996, it serves as a troubleshooting guide and details procedures for Field Replaceable Unit (FRU) replacement.

Key areas covered include:

• Product Description: Outlines the specifications of various Venturis GL and Celebris GL models, categorizing them by form factor (Short Tower, Low Profile), operating system (without OS, Windows 95, Windows NT 3.51, Windows NT 4.0), and hardware configurations (video, HDD, RAM, CD-ROM, country kits). It highlights features such as Pentium Pro processors, EDO DRAM, Plug and Play, PCI local bus, Matrox/S3 graphics, onboard Ethernet, and ESS audio.
• BIOS Setup Utility: Explains how to access and configure the computer's BIOS settings, covering main options (time, date, language, diskette/IDE drive settings, video system), advanced options (Plug & Play, P6 BIOS update, large disk access, integrated peripherals like Ethernet, serial/parallel ports, audio, USB), security settings (passwords, diskette access), power management options (standby, suspend timers), and boot sequence. It also describes the Flash Utility for BIOS updates.
• System Software: Details the factory-installed software, including Windows NT Workstation or Windows 95, device drivers, and on-line documentation (System Reference, Using Your Computer, Digital Service and Support, Readme.txt). It lists pre-installed applications like Adobe Acrobat Reader, ClientWORKS (for asset management), Netscape/Internet Explorer, Power Management Utility, PC Care diagnostics, and audio/video utilities. Instructions are provided for restoring the operating system and installing additional device drivers using the Software Backup CD and supplied diskettes.
• Troubleshooting: Offers a structured approach to diagnosing and resolving computer issues, starting with initial checks (LEDs, POST errors, beep codes, cable connections, device drivers). It provides detailed troubleshooting tables for various problems related to the computer itself, disk drives (IDE/SCSI, diskette), monitors (display, drivers), audio systems, network interfaces, and CD-ROM drives, along with possible causes and recommended actions. It also describes the Customer Replaceable Unit (CRU) process for specific parts like monitors, mice, keyboards, and speakers.
• FRU Replacement: Provides step-by-step instructions for removing and replacing key components, including the main logic board, adapter cards, SIMMs, video memory, lithium battery (with a warning about explosion risk), processor heat sink, processor, voltage regulator module (VRM), backplanes, expansion boards, power supplies, control panel assembly, front air duct, fans, and mass storage devices (3.5-inch and 5.25-inch). It emphasizes static electricity precautions and lists recommended tools.
• Device Mapping: Contains tables listing the full range processor memory address map, I/O address map, computer interrupt levels (IRQs), and DMA channel assignments, useful for advanced configuration and resolving hardware conflicts.

The manual includes contact information for diagnostic software and BIOS updates, accessible via the Internet or Digital's Bulletin Board Service.