3Com 8807, 8814, 8810 manual Description of fan tray LEDs, Indicator State description

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78CHAPTER 6: SWITCH MONITORING AND MAINTENANCE

■The Input LED (green) and Output LED (green) stay ON, but the display power command shows that the PSU is not in position (but the other PSU operates normally). Such a problem is likely caused because of the poor contact between the PSU and the backplane due to a badly seated PSU. In this case, switch off the power supply, loosen the captive screws on the PSU, push the PSU into the chassis a little bit, tighten the captive screws, and switch on the power supply to check that the normal state is resumed.

■The Input LED (green) and Output LED (green) are OFF. In this case, check that the power cords are connected correctly, the power cords are in good condition, and the power switch has been put in the ON position.

■The Fail LED (red) is ON. In this case, check that the correct power voltage is in use (i.e., 90 to 264VAC, 50-60 Hz for AC PSU).

■The Fail LED (red) is ON. In this case, check that the air filter protecting the fan tray is clean. Excessive dust accumulated on the air filter will block the fan tray from free ventilation and even lead to power supply failure.

■If you cannot solve the problem yet after going through the above checking steps, contact 3Com technical support engineers rather than disassembling the PSU yourself.

Troubleshooting Fan The Switch 8800 Family provides two LEDs on the fan tray. You can read them and Tray know if the fan tray is OK.

Table 74 Description of fan tray LEDs

Indicator	State description

RUN	Green indicates that the fan tray is normally operating.
	OFF indicates that the fan tray has failed.
ALM	Red indicates that the fan tray has failed.
	OFF indicates that the fan tray is in normal state.

n The ALM LED on the fan tray keeps ON for 2 to 3 seconds when the switch is powered on.

If the RUN LED is OFF, check if:

■The fan tray has been well seated.

■All the cables connecting the fan tray and the backplane have been correctly connected and are in good condition.

■The fans are working normally.

■The rotation of the fans has not been blocked.

■The blank filler panels have been inserted into those I/O module slots.

Troubleshooting I/O The Switch 8800 Family provides I/O moduleX LEDs on the fabric for the user to Module observe the state of these I/O modules.

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Contents 3Com Switch 8800 Family 3Com Corporation Campus Drive Marlborough, MA USA United States Government LegendContents System Debugging Protocols that are used to interconnect LANs About this GuideConventions Lists icon conventions that are used throughout this guideRelated SwitchUsing the supported protocols and CLI commands DocumentationProduct Overview Preface8800s 3Com Switch 8810 10-Slot Chassis 3Com Switch 8814 14-Slot Chassis Chassis and Slots Switch Switch 8807 slotsSwitch Switch 8810 slotsFunctions StructureAC Power System Specifications SwitchEach Ethernet port can deliver up to 15.4 W to its PD External PoE Power Rack 3C17509 PoE entry areaMbus Introduction Normal AbnormalLabel Color State Abnormal reason Fan tray panel of the Switch 8800 Family Role and functionGbps Switch Fabric Fabric ModulesPanel Management Ports RS232/485 port specificationsCompact Flash CF slot Status LEDs for the management 10Base-T/100Base-TX portAUX port specifications Reset buttonConsole port specifications Status LEDsCF status LED Status LEDs for the 360 Gbps Switch Fabric moduleGbps Switch Fabric LED Status Status LEDs for I/O moduleGbps Switch Fabric Technical specifications 720 Gbps Switch Fabric specificationsAUX port Status LEDs for the 720 Gbps Switch Fabric module Status LEDs for the 720 Gbps Switch Fabric module Technical specifications of the Switch 8800 FamilySoftware Features Supported software featuresSoftware features of the Switch 8800 Family Lacp Software features of the Switch 8800 Family Product Overview Application Modules O modules available to the Switch 8800 Family3C17511 module specifications OverviewPanel and LEDs 3C17511 module panel 3C17512 module specifications3C17512 2-port 10GBASE-X XFP Module Port LEDs on the 3C17511 moduleSpecifications 3C17513 12-port 1000BASE-X SFP Module3C17513 module has two LEDs for each port on its panel Port LEDs on the 3C17513 module 3C17514 module specifications3C17514 24-port 1000BASE-X SFP Module Panel and LEDs 3C17514 module panel3C17525 1-port 10GBASE-X Advanced Xenpak Module 3C17516 module has one LED for each port on its panelPort LEDs on the 3C17516 module Panel and LEDs 3C17525 module panel 3C17526 module specifications3C17526 4-port 10GBASE-X XFP Module Port LEDs on the 3C17525 modulePanel and LEDs 3C17526 module panel 3C17527 module specifications3C17527 2-port 10GBASE-X XFP Advanced Module 1000 Mbps optical port LEDs on the 3C17526 module3C17528 48port 10/100/1000 BASE-T RJ-45 Module 3C17528 module has one LED for each port on its panel3C17530 24-port 1000BASE-X SFP Advanced Module 3C17531 24-port 10/100/1000BASE-T Advanced ModulePanel and LEDs 3C17530 module panel Panel and LEDs 3C17531 module panel 3C17532 module specifications3C17531 module has one LED for each port on its panel Port LEDs on the 3C17531 module3C17533 24-port 1000BASE-X SFP IPv6 Module 3C17532 module has one LED for each port on their panelPanel and LEDs 3C17533 module panel 3C17534 24-port 10/100/1000BASE-T IPv6 Module 3C17534 module specifications3C17536 module specifications 3C17536 4-port 10GBASE-X XFP Quad IPv6 ModulePanel and LEDs 3C17536 module panel 3C17538 module specifications3C17538 48-port 1000BASE-X SFP IPv6 Module 1000 Mbps optical port LEDs on the 3C17536 modulePanel and LEDs 3C17538 module panel Technical specifications for the 3C17542Front panel Port LEDs on the 3C17538 moduleAvailable cables Technical specifications for the 3C17546Technical specifications for the 3CR1754766 Status LEDs on the 3C17546Technical specifications for the 3C17548 Status LEDs on the 3CR1754766Documents the 3Com Switch 8800 Family transceivers Transceiver SpecificationsTransceivers Densities Switch 8800 PortSwitch 8800 Available Modules Description Max PortGeneral Safety Installation PreparationSafety RecommendationsInstallation Preparation Harmful gas limits in an equipment room Limitation on dust content in equipment roomMechanical active material Unit Content Gas Average mg/m3 Max. mg/m3Required installation tools Installation ToolsPower Supply Requirements Space Requirements MeasureSwitch Installation Confirming Installation PreparationInstallation Flow Mounting the Switch User-Supplied Cabinet One Switch 8807 chassis in a cabinetTwo Switch 8807 chassis in a cabinet One Switch 8807 chassis in a cabinet Switch 8807 11UOne Switch 8810 chassis in a cabinet Two Switch 8807 chassis in a cabinet Switch 8807 11UOne Switch 8814 chassis in a cabinet One Switch 8810 chassis in a cabinet Switch 8810 14UOne Switch 8814 chassis in a cabinet Switch 8814 17U CabinetConnecting Pgnd Wire and Power Cord Connecting Pgnd Wire Common grounding environmentOther grounding environment Ground the switch when ground bar is available Connecting AC Power Cord Ground the switch via AC PE wireConnect AC power cord to the Switch Connecting PoE power cable Grounding PoE chassisInstalling Fan Tray Install mounting ears onto the both sides of the switchFan tray is hot swappable Lightning Protection Box Contact take the fan tray out from the packing bagInstalling I/O modules Fasten the screw on top of the PoE lightning protection boxRJ-45 Signal Direction DB-25 DB-9 Connecting Interface CablesConnecting console cable IntroductionAUX cable AUX cable pinoutsConnecting category-5 shielded cable Connecting AUX cableIntroduction to RJ-45 connector Connecting FiberCable Routing Recommendations Cable ManagementIntertwinement or bending is allowed Cable bundling example Cable fixing example Tie-binding parameters Verifying InstallationInstallation checking list Cable bundle diameter mm Space between bundles mmSwitch Installation System Debugging Setting up Configuration EnvironmentSetting up EnvironmentPowering and Booting the Switch Verifying Installation Before Powering Switch Zbbtest System Debugging Switch Monitoring Maintenance Troubleshooting PSUDescription of the LEDs on PSU Indicator State description Description of fan tray LEDsIndicator Hardware MaintenanceRemoving AC PSU Switch 8807 as example Replacing AC PSUInstalling AC PSU Switch 8807 as example Remove and install the AC PSURemoving and cleaning the air filter of PSU Installing the air filter of PSUInstalling the air filter of the chassis Replacing and Cleaning Air Filter of ChassisRemoving and cleaning the air filter of chassis Required toolsGently pull the module out of the slot along the guides Installing a ModuleRemoving a module Replacing the Fan Tray Required toolsSoftware Upgrade Recommended upgrade procedureRequired cables Boot menu Press Ctrl+B as prompted and the system will displayUpgrading software through console port XModem Main MenuA Windows 98 operating system environment, you can perform Serial SubmenuUpgrading software through management Ethernet port Tftp Send File dialog boxFiles using Tftp and to 0x0 if using FTP Upgrading software through management Ethernet port FTP Loading using FTP Remote and local loading using Tftp Load host programNo configuration saving during I/O module reboot Password LossSoftware Upgrade No response from fabric serial interface Insufficient Flash memorySwitch Monitoring and Maintenance Lightning Protection Switch Diagram of lightning arresterInstallation Lightning Arrester for Network Port Installation procedureIs not well grounded yet Installation precautions Use the nylon ties to bundle the cables neatly

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