3Com 9400 manual Fan Tray Assembly Removal and Replacement

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Fan Tray Assembly Removal and Replacement

The CoreBuilder 9400 is cooled by the fan tray assembly, which contains two 12-volt DC fans. The fans are thermally controlled, which means that they run at slower speeds when the system is operating at temperatures of less than 30 °C and at full speed when the system temperature is above that.

You need no tools to remove the fan tray. You can remove and replace the fan tray with the power on.

To remove and replace the fan tray assembly, follow these steps:

1Facing the front of the system, squeeze the fan tray latching tab.

2Slide the fan tray out of the system.

3Slide the new fan tray into the system chassis.

4To seat the fan tray, ensure that the connectors are aligned, and then push the fan tray inward until the connectors engage and the fan tray latches. You feel a slight resistance as the connectors engage.

CAUTION: If the resistance is too great, the connectors may not be aligned. Forcing the fan tray inward could damage the connectors. If necessary, remove and reinsert the fan tray, ensuring that the connectors are properly aligned.

Fan Tray Assembly Removal and Replacement

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Figure 14 Removing and Replacing the Fan Trays

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Contents CoreBuilder Japan Vcci Class a Compliance United States Government LegendsAustralian EMC Frameworks Compliance Page Contents System Specifications Introduction Finding Specific Information in This GuideFor information on For information on Turn to ConventionsIcon Type Description Convention DescriptionPaper Documents CoreBuilder 9400 DocumentationDocumentation Comments Year 2000 ComplianceSoftware and Documents on CD-ROM System Features and Benefits CoreBuilder 9400 Intelligent SwitchNetwork Configuration Example Speeding Up Server AccessSystem 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 Installing the System on a Table Top Before You BeginQty 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 Pin No Signal Description Cabling the Out-of-Band Management PortConsole Port Pin Assignments Male RJ-45 connector 10BASE-T cable Power Up System Power UPPower-up Diagnostics System DiagnosticsGigabit Ethernet Port Diagnostics System Checks Next Step Software ConfigurationCheck Description SystemSystem Power UP About CoreBuilder 9400 System Management Access Allows you to Using MechanismTerminal Connection Modem ConnectionIP Management Interface Changing the Console Port Baud Setting Initial Management AccessConfiguring the IP Interface In-band ManagementOut-of-band Management Power Failures Diagnosing ProblemsGetting Additional Help Abnormal LED ActivitySymptom 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 Safety Agency Certifications Specifications Physical DimensionsPower Supply Environmental RequirementsStandard Type RFC/IEEE Supported Software Tftp RFC InstallationSnmp protocol RFC MIB II RFCPower Supply Assembly Removal and Replacement Safety PrecautionsRemoving and Replacing the Power Supply AudienceRemoving 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 RequirementsDistribution Rack Requirements Protective Grounding for the RackSpace 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 Online Technical Services 3Com Knowledgebase Web ServicesWorld Wide Web Site 3Com Facts Automated Fax Service 3Com Bulletin Board Service3Com FTP Site Country Data Rate Telephone NumberSupport from 3Com Support from Your Network SupplierCountry Country Telephone Number Asia Pacific RimEurope Latin AmericaCountry 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