Compaq 4200 Family manual Module Power Protection, Single-Bus Module

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3–2 Enclosure 4200 Family LVD Disk Enclosures User Guide

CXO6981A

Figure 3–1. Single-Bus I/O Module

Module Power Protection

A sensor on the +5 VDC line in the module detects overcurrent conditions. Should this error occur, the sensor disconnects the voltage from the module and the power LED is OFF (see Figure 3–2). This disables the module until one of the following conditions occurs:

■The overcurrent condition no longer exists.

■The defective module is replaced.

A disabled module prevents data transfers between the host controller and the drives, and the host controller and the EMU. An LED on the module displays the module power status.

Single-Bus Module

This section describes the unique features of the single-bus module. This module (see Figure 3–1) has one VHDCI connector and two LEDs.

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Contents Enclosure 4200 Family LVD Disk Enclosures Page Contents Appendix a Glossary Index List of Figures List of Tables Starting the Enclosure About This GuideIntroducing the Enclosure O ModuleDisk Drives Enclosure Power and CoolingAppendix B, Specifications Replacing CRUsDocumentation Conventions DescriptionSymbol Related Documents Related PublicationsChapter Introducing the EnclosureDisk Enclosure Features Disk Enclosure Rear ViewHigh Availability Power SuppliesScsi Buses Data IntegrityEnclosure Layout Status Monitoring and DisplayEMU Major Elements Element ReplacementCRU Replacement Methods Element FunctionsFan Power Supply-DualPower Supply-Single ModuleConnecting the Scsi Bus Cables Starting the EnclosureScsi Bus Cables Description Part Number Meters FeetLength Description Meters Feet Verifying Operation Applying PowerInstalling Scsi Bus Cables Rear Status LEDs Module Module Power Protection Single-Bus ModuleStatus Displays Scsi Bus ConnectorsScsi Bus Termination Single-Bus Module LED Displays Replacing an I/O ModuleScsi Address Map Disk Enclosure Bay AddressesDisk Drives Typical 1-Inch Disk DriveDisk LED Status Displays Status ReportingDisk Status Fault Status Drive Power Drive BlankReplacing a Disk Enclosure Power and Cooling Power Supply and Fan Assembly ComponentsEnclosure Power Power OptionsFan Interface Temperature SensingFans Nonoperational Status Replacing a Power Supply or FanPower Supply and Fan Status Displays Replacing CRUs Ordering a Spare CRUBefore starting the replacement procedure Basic Replacement ProceduresCommon Replacement Procedures ESD ProtectionReplacing CRUs Installing a Drive Blank Replacing a Drive with a Drive BlankInsert the drive blank part-way into the enclosure Regulatory Notices FCC Class B CertificationDenmark Safety Demco Country-Specific CertificationsSpecifications Appendix BFigure B-1. Dimensions-Vertical Orientation Table B-2 Element Physical Specifications Table B-1Table B-4 Shipping or Short Term Storage Specifications Environmental SpecificationsTable B-3 Operating Specifications Power Supply without fanAC Power Specifications Power SpecificationsTable B-5 AC and DC Power Specifications Ambient temperature GlossaryEMU RAID Scsi ID Index Enclosure 4200 Family LVD Disk Enclosures User Guide Index

4200 Family specifications

The Compaq 4200 Family represents a pivotal line of desktop computers designed by Compaq, aimed at fulfilling the increasing demand for reliable, efficient computing solutions in both business and home environments in the late 1990s. This series offered a diverse array of models, catering to varying levels of performance and user requirements, ultimately setting a standard for its time.

One of the standout features of the Compaq 4200 series was its robust performance, achieved through the integration of Intel Pentium processors, which delivered superior speed and multitasking capabilities. This made the 4200 family ideal for running productivity software, database applications, and everyday tasks efficiently. Depending on the model, users could choose configurations with varying clock speeds, allowing for tailored performance to meet specific user needs.

The Compaq 4200 Family also incorporated advanced technologies that enhanced user experience. Among these was the implementation of a high-capacity hard drive, which provided ample storage space for documents, applications, and multimedia files. This was complemented by increased RAM options, ensuring smooth performance and the ability to run multiple applications simultaneously without significant lag.

Graphics capabilities were another notable feature of the 4200 series. Many models offered integrated graphics options, allowing users to engage in light gaming and multimedia tasks without the need for additional hardware. Furthermore, the inclusion of PCI slots enabled users to upgrade their systems with dedicated graphics cards, enhancing visual performance for more demanding applications.

For connectivity, the Compaq 4200 Family included a variety of ports, such as USB, serial, and parallel connections, allowing users to easily connect peripherals like printers, scanners, and external storage devices. The inclusion of a built-in modem facilitated internet connectivity, making it convenient for users to access online resources.

Another characteristic of the Compaq 4200 series was its user-friendly design. The systems were constructed with accessibility in mind, featuring easy-to-open cases for upgrades and repairs. Additionally, Compaq provided comprehensive support resources, thereby ensuring that users could easily troubleshoot and maintain their systems.

In conclusion, the Compaq 4200 Family was emblematic of its era, showcasing a blend of impressive performance, flexibility, and user-centric design. It served a wide range of users, from professionals in corporate environments to families requiring dependable home computing solutions, making it a significant player in the landscape of late 1990s computing technology.