3Com 9400 manual Audience, Safety Precautions, Power Supply Assembly Removal and Replacement

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B	FIELD-REPLACEABLE UNITS

This appendix contains information on how to remove and replace the CoreBuilder® 9400 Field-Replaceable Units (FRUs). The FRUs include:

■Power supply assembly

■Fan tray assembly

Only trained technical personnel should remove and install the power supply.

Audience

This appendix is intended for trained technical personnel only. Do not attempt to remove or replace a CoreBuilder 9400 power supply if you have not had the proper training from 3Com. For training information, call 1-800-NET-3COM or see the numbers for your country in Appendix D.

WARNING: Hazardous energy exists within the CoreBuilder 9400 system. Use extreme caution when you remove or replace the FRUs. Always be careful to avoid electric shock or equipment damage. See “Safety Precautions” next.

Safety Precautions

Be sure that you follow all safety precautions when you replace components in a CoreBuilder 9400 system. Hazardous energy exists inside the system chassis. To avoid electric shocks, burns, or equipment damage, read and following these warnings:

WARNING: Always unplug the power cord before you open any electronics chassis box or enclosure.

When the system is on, do not touch any connections within the chassis. Do not insert metal objects into the system.

Power Supply Assembly Removal and Replacement

The CoreBuilder 9400 system operates using a single power supply assembly. You can add a second power supply to the system for redundancy. If either power supply fails, the Fault LED lights yellow.

Removing and Replacing the Power Supply

1Remove the power cord from the power supply.

2Loosen the captive screws that secure the power supply to the chassis.

3Grasp the power supply handle and gently slide the power supply out of the chassis.

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Contents CoreBuilder Japan Vcci Class a Compliance United States Government LegendsAustralian EMC Frameworks Compliance Page Contents System Specifications Finding Specific Information in This Guide IntroductionFor information on Convention Description ConventionsFor information on Turn to Icon Type DescriptionPaper Documents CoreBuilder 9400 DocumentationYear 2000 Compliance Documentation CommentsSoftware and Documents on CD-ROM System Features and Benefits CoreBuilder 9400 Intelligent SwitchSpeeding Up Server Access Network Configuration ExampleSystem Management 10BASE-TX System Overview Front PanelBack Panel of the CoreBuilder 9400 System System Overview Back PanelSystem Overview Sample Application SuperStackII SwitchSystem and Setup Overview Before You Begin Installing the System on a Table TopQty To use Installing System Mounting Brackets Installing the System in a Distribution RackOverview of Cabling Fiber Safety PrecautionsGuidelines for Gigabit Ethernet Cabling Cabling Gigabit Ethernet PortsCabling Gigabit Ethernet Ports Cabling 1000BASE-SX PortsCabling 1000BASE Gbic Ports System is powered on and runningSC connector cover Connecting the LX Transceiver to MMF When you cable Gbic transceivers, note that the SC Cabling the Console Port Cabling the Out-of-Band Management Port Pin No Signal DescriptionConsole Port Pin Assignments Male RJ-45 connector 10BASE-T cable Power Up System Power UPSystem Diagnostics Power-up DiagnosticsGigabit Ethernet Port Diagnostics System Next Step Software ConfigurationSystem Checks Check DescriptionSystem Power UP About CoreBuilder 9400 System Management Access Allows you to Using MechanismModem Connection Terminal ConnectionIP Management Interface Changing the Console Port Baud Setting Initial Management AccessIn-band Management Configuring the IP InterfaceOut-of-band Management Abnormal LED Activity Diagnosing ProblemsPower Failures Getting Additional HelpSymptom Possible Sources of the Problem Steps to Take LED Status Possible Sources of the Problem Steps to Take Diagnosing ProblemsCleaning Dirty Fiber Optic Ports and Connectors Environmental Requirements Specifications Physical DimensionsSafety Agency Certifications Power SupplyMIB II RFC Software Tftp RFC InstallationStandard Type RFC/IEEE Supported Snmp protocol RFCAudience Safety PrecautionsPower Supply Assembly Removal and Replacement Removing and Replacing the Power SupplyRemoving and Replacing the Power Supplies Fan Tray Assembly Removal and Replacement Fan Tray Assembly Removal and ReplacementAppendix B FIELD-REPLACEABLE Units Wiring Closet Recommendations General Safety RequirementsProtective Grounding for the Rack Distribution Rack RequirementsSpace Requirements for the Rack Mechanical Requirements for the Rack Recommended Service AccessBuilding Codes Building and Electrical CodesElectrical Codes NfpaAppendix C Site Requirements and Safety Codes 3Com Knowledgebase Web Services Online Technical ServicesWorld Wide Web Site Country Data Rate Telephone Number 3Com Bulletin Board Service3Com Facts Automated Fax Service 3Com FTP SiteSupport from 3Com Support from Your Network SupplierLatin America Country Telephone Number Asia Pacific RimCountry EuropeCountry Telephone Number Fax Number Returning Products for RepairAppendix D Technical Support Numbers IndexIndex Recommendations World Wide Web WWW 50, 51 Index CoreBuilder 9400 High-Availability Switch 3Com Corporation Limited WarrantyWarranties Exclusive