3Com 5017C with load sharing, 5017C-LS installation and operation guide Command. If this fails to

Page 53

Table 2-4. Troubleshooting with Controller Module LEDs (Continued)

LED

State

Possible

Troubleshooting

Problem

Suggestions

 

 

 

 

 

 

 

 

 

 

Primary

Steady

The primary

Reinstall the primary

Power

blinking

power supply

power supply and turn it

(cont.)

(cont.)

is not properly

on.

 

 

 

 

installed.

 

 

 

 

 

 

 

 

 

Two blinks,

The power

If a management module

 

 

then a pause

load-sharing

is installed, the

 

 

(in unison

hardware is in

concentrator should

 

 

with Backup

an error state.

recover automatically

 

 

Power LED)

 

from this condition. If it

 

 

 

 

 

doesn't, reset the

 

 

 

 

 

concentrator using the

 

 

 

 

 

RESET CONCENTRATOR

 

 

 

 

 

command. If this fails to

 

 

 

 

 

correct the condition,

 

 

 

 

 

turn both power

 

 

 

 

 

supplies OFF, then ON

 

 

 

 

 

again.

 

 

 

 

 

If a management module

 

 

 

 

 

is not installed, turn both

 

 

 

 

 

power supplies OFF, then

 

 

 

 

 

ON again.

 

 

 

 

 

Backup

Off

The Backup

Press the LED Test button

Power

 

 

Power LED is

to verify that the LED is

 

 

 

 

broken.

working properly.

 

 

 

 

 

 

 

 

 

 

The backup

Reinstall the backup

 

 

 

 

power supply

power supply and turn it

 

 

 

 

is not properly

on.

 

 

 

 

installed.

 

 

 

 

 

 

 

Installation and Troubleshooting 2 - 23

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Contents Document Number Printed March VDE Class B Compliance Restricted Rights Page Contents Maintenance Appendix B Slot Usage Chart Appendix C Technical Support Page Figures Page Tables Page Audience How to Use This GuideThis guide contains the following chapters Structure of This GuideConvention Indicates Example Document ConventionsRelated Documents Reference Documents 3Com DocumentsPage Introducing the ONline System Concentrator IntroductionMultiple 17-Slot Concentrator Environment Front Panel Back PanelONline System Concentrator Front View ONline System Concentrator FeaturesModular Design Modular ONline ConfigurationTriChannel Architecture Port-Switching TechnologyONline System Concentrator Using Multiple Networks Load Sharing Fault-Tolerance CapabilitiesBackup Power Supply Redundant Cable Links Backup Controller ModuleRedundant Cable Link Configuration Backup ConcentratorHot Swapping of Media Modules Backup Concentrator ConfigurationSynchronous Backplane Contents of the Shipping Box Installation and TroubleshootingONline System Concentrator Shipping Box Contents FCC Regulations Ventilation Site Selection ConsiderationsLocation Requirements Rack Mount Installation Requirements Power RequirementsTable Top Installation Requirements InstallationInstalling the Cable Tray Cable Tray Rack Mounting Rack Mount SettingsRack Mount Positions Cable Tray Table Mounting Cable Tray Installation in RackRack Mounting the ONline System Concentrator Installing the ONline System ConcentratorAttaching the Rack Mount Flanges Chassis Mounted in Rack Table Top Mounting the ONline ConcentratorRemoving Fan Unit Installing the Backup Power Supply OptionalUnplugging the Fan Unit Power Supply Connectors 10. Installed Backup Power Supply Selecting the Power Supply Voltage11. Setting the Voltage Selector Switch Connecting Network Cables Installing ONline Modules12. Network Cable Connections Power Up and VerificationFan Operation Verification Power Supply Operation VerificationTroubleshooting with Controller Module LEDs Command. If this fails to See Primary Power LED Technical Assistance Configuration of your concentrator Where To Go From HereMaintenance Replacing the Power Supply Routine MaintenanceRemoving the Power Supply Unplugging the Power Supply Power Supply Plugs in ONline System Concentrator Backup Power Supply Installed Removing the Fan Unit Replacing the Fan UnitUnplugging the Fan Unit Other System Components ONline Module MaintenancePage Environmental GeneralRegulatory Compliance Power SourceMechanical Accessories Page Slot Usage Chart Table B-1. Concentrator Slot Usage Chart Table B-1. Concentrator Slot Usage Chart Page On-line Technical Support Technical SupportWorld Wide Web Site Support from Your Network SupplierEmail Technical Support Support from 3Com Returning Products for Repair Accessing the 3Com MIB3Com Technical Publications Page Index Index