3Com CS/2500 manual Voltages. There are no user-serviceable parts inside

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5-10 CHAPTER 5: MAINTENANCE AND UPGRADES

5Transfer the bracket from the original diskette drive to the new one.

a Remove the four screws (two on each side of the bracket) that hold the diskette drive.

b Slide the old drive out of the bracket. c Slide the new drive into the bracket. d Replace the four screws.

6Reconnect the power wiring harness and the short ribbon cable to the rear of the diskette drive.

Make sure you keep the power wiring harness connector keys aligned.

7Replace the bracket in the chassis.

a Slip the keyhole slots on the bottom of the bracket over the standoffs on the bottom of the chassis.

b Slide the bracket toward the front of the chassis until the front panel of the diskette drive is flush with the opening in the front panel of the chassis.

c Fasten the bracket to the chassis with the screw.

8Reconnect the ribbon cables to the daughtercard mounted on top of the diskette drive bracket.

Be sure to replace the cables in their original orientation.

9Replace the cover, as described in “Replacing the Cover” on page 5-15.

Replacing the Power	If any component in the power supply module (other than a fuse) fails,
Supply	you must replace the entire module.
	WARNING: Do not open the power supply. It contains hazardous
	voltages. There are no user-serviceable parts inside.
	VORSICHT: Öffnen Sie niemals das Netzteil. Hochspannung! Es sind
	keine zu wartenden Teile enthalten.
	AVERTISSEMENT: Ne pas ouvrir ce bloc d’alimentation. Tensions
	dangereuses à l’intérieur. Ne contient aucune piece que l’utilisateur
	puisse réparer.
	PELIGRO: No abra fuente de alimentacion. Contiene alta tensión. No
	hay partes para reemplazar adentro.

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Contents CS/2500 Series 3Com Corporation 5400 Bayfront Plaza Santa Clara, California Iii Page Contents Installation Maintenance and Upgrades PIN Assignments Technical Support Page Figures Tables Audience About this GuideIntroduction ConventionsThis Typeface Italics Italics are used to denote new terms or emphasis About this Guide Overview FeaturesFeatures Ten standard RS-232-D electrical interfacesSW/2500, can be used only with the CS/2500 and CS/2600 SoftwareCompatibility Chassis Panel, see Back Panel onHardware Interrupt Front Panel Its +5 V DC output CS/2500 and CS/2600 back panel, shown in -5, contains Power supply module and three types of connectorsBack Panel Overview Back Panel Overview Mount Kit SpecificationsOptional Rack VAC Preparation InstallationDo the following before beginning the installation Installation Install brackets Turning on the server Cabling the ServerTo the Network All ports are set to terminal SETDefault -TERM DeVice = Installation Slide-lock connection on the server End to the transceiverInstall brackets Configuration, and Appendix C, Monitor Utility ConfigurationAC power source must meet the requirements outlined ModifyingInstallation Startup Guide or software release notes Rbcs files Booting fromDiskette DisketteStartup 3Com Corporation CS/2000 Series Monitor Reading...OK Insert copy and hit return to continue Parameter changes Messages Boot ProblemsNormal Startup Shutting DownShutting Down Startup Firmware Monitor ConfigurationEntering Configuration Following menu is displayed ProcedureChanging SLP Changing the Configuration Configuration Changing the Configuration Next section SLP, and Trivial File Transfer Protocol TftpUsed with 3Com Network Control Servers NCSs Com no longer Type B Change IP/TFTP Parameters menu appears TftpConfiguration Bootp Software and to operate in mixed environments Emulating aCS/2000 or CS/2100 Changing Port Configuration Changing Port Configuration Configuration 3Com recommends the following procedures for preventive Maintenance and UpgradesMaintenance MaintenanceMaintenance and Upgrades Maintenance Reinstall the fuseholder cartridge in the receptacle Upgrades Upgrade procedures require you to remove the server coverRemoving the Server Cover Grasp both sides of the cover and carefully lift it off Rear8-F Pull taut to expose screw Voltages. There are no user-serviceable parts inside Upgrades Remove Connector from Each pin must be inserted properly into its socket EPROM. Each pin must be inserted properly into its socket Replace the cover, as described in the next sectionUpgrades Maintenance and Upgrades Troubleshooting Troubleshooting Operating Problems Troubleshooting Procedures Memory DumpEnter the density of the dump diskettes Return to use the default density 2mb Troubleshooting Figure A-1 Serial Connector Pin Numbering PIN AssignmentsTXD DTE Transceiver DO-S Slct Startup Messages Appendix B Startup Messages You can access the monitor in either of the following ways Monitor UtilityNonfunctional Set the Auto-reboot parameter to Boot monitorContinuous Self-Test and Initial Boot Source parameters Become nonfunctional, enter the following command Memory dumps, refer to Memory Dump Procedures on-2 on page 1-4. The switch is recessed into a round hole to Dump Procedures onSyntax BT Filename and address parameters specify the name Procedures onUsing this menu, refer to , Configuration From memory locationDescription Repeats the previous command Technical Support Services3Com Bulletin Board Service 3ComBBS On-line TechnicalPress Return to see the ThreeComForum main menu Country Telephone Number Hong Kong 852 2537 44 1442 408 727 Appendix D Technical Support Sender’s expense To obtain an RMA number, call or fax Returning ProductsFor Repair 10/25/95 Index NumericsCover Index Index Index Index Limited Warranty Bayfront Plaza Santa Clara, CA 408 764-5000 1/1/94