Removing the Power Supply | 3Com S24x, S27x, S26x guide

Removing/Replacing Power Supply

Example

Figure 4-3shows an example of removing the power supply.

Remove the Two Holding

Screws on Inside and

Slide Power Supply Out

DC Power Supply

Terminal Block

Positive

Wire

Negative

Wire

Support Bar

®

Power Supply Cables

(P1/P2)

Remove the Four Holding Screws on the Rear Panel

Figure 4-3. Removing the Power Supply

4-8	Maintenance

Image 104

3Com S24x, S27x, S26x installation manual Removing the Power Supply

Contents

3Com Corporation Restricted Rights Notification for U.S. Government Users Restricted Rights Legend Proprietary Material Page Contents Appendix A. Cables Overview IntroductionAudience Manual About This Manual Trademarks What is Switch?PathBuilder S24x 26x, Support Meshed ClusterApplication Branch Nodes ApplicationsPerformance Regional Concentrator Regional Concentrator Example PathBuilder S24x, 26x, and 27x Switch Cluster Example Features and Protocols Description PathBuilder S24x, 26x, and 27x Switch Hardware Configuration Hardware Components Hardware ComponentsComponent Description DSPM/SM Ethernet Port 4 Limitations Enclosure Motherboard PartsMotherboard Ports Flash Simm Serial/Network Port NumbersSlot Number Port Number Associated Card DIMs without a Cable Adapter DIMs with a Cable Adapter UsedPort Number Use Back Panel Back Panel Components TI Dual Port Digital PBX Interface Card Function Cable Description Function Color LED is Indicating IndicatorsLED Status E1 Dual Port Digital PBX Interface Card DIP Switch SettingsPBX Interface Card Illustration Location RUN Sysfail DSPM/SM Card Step Action 13. DSPM/SM Card 14. Cabling T1/E1 Card to DSPM/SM Cards Dspm Card with Analog E&M Interface 15. DSPM/E&M Card LEDs Setting Jumpers for Dspm Card with Analog E&M Interface Default JumperSettings Jumper Wire/600 Wire/UK Number Complex Germany 16. UK Complex Impedance 18. Jumper Locations for Dspm E&M Card Dspm Card with FXS Analog Interface 20. Dspm Card with Analog FXS Interface Users Jumper LocationsFor Australian Dspm Host Card with FXO Analog Interface Card Illustration 21. DSPM/HC Card with Analog FXO Daughtercard Hardware Components 48V Ringer/Power Supply Card and Enclosure 22. Standard -48V RInger/Power Supply Card and Enclosure 23. Enhanced -48V RInger/Power Supply Card and Enclosure 10BaseT Transceiver 24 BaseT Transceiver General Radio Frequency Interference RegulationsCanadian DOC Telecommunications Regulations Mise en Garde FCC and Telephone Company Procedures and Requirements FCC Information Regulations ConcerningElectromagnetic Radiation FCC Information Preparation and Unpacking Environment Selecting anOperating Mise en Garde Unpacking Checking PathBuilder S24x, 26x, and 27x Switch Rackmount Kit Placement Considerations PathBuilder S24x, 26x, and 27x Switch Rackmount Kit Step Action Description Step Action Description Removing Pedestal Base Rackmount Assembly Steps for Installing the PathBuilder S24x, 26x, and 27x Switch PathBuilder S24x, 26x, and 27x Switch Hardware Installation Avertissement Setting DIP Switches Switches 1Switch Settings for Motherboard Switches 1 Set Switch For Installing the DSU DIM DSU DIM Installation Step Action Result/Description Switch Settings Configuration ProcedureINT EXT DSU Input and Output Signaling Input SignalsOutput Signals Signal Description IDL CLK Loopback Options Troubleshooting DSU Installation TroubleshootingIf Problems Arise DIM Installing DIMs Example Mise en Garde Installing SIMMs Installing SIMMs BRI Installing I/O CardsInstalling an I/O Installing a T1 or E1 Dual Port Digital PBX Interface Card Installation Place the interface card on an antistatic mat Installing the T1/CSU Daughter Card Follow these steps to install the T1/CSU Daughter card Installing T1/CSU Daughter Cards Cabling the PathBuilder S24x, 26x, and 27x Switch LAN Installing the Transceiver Transceiver Power-Up Diagnostics/Verification Power UpSequence Function Description Default Node CommandSetting Node to Default Installing Software Options Configuring Full Mesh Cluster CablingUsage Cables Mesh Diagram Maintenance Maintenance Removing/Replacing Top Cover Cover Removing the Top Cover Removing/Replacing Front Panel Cover Panel Cover Removing the Front Panel Cover Removing/Replacing Power Supply Supply Removing the Power Supply Removing an Expansion Card Removing the Support Bar Removing an Expansion Card Replacing PathBuilder S24x, 26x, and 27x Switch Motherboard Install Removing the Motherboard Replacing Removing/Replacing the Lithium BatteryBattery Removing the Lithium Battery Removing/Replacing the Lithium Battery What Is It? AlarmsStatistics Software Application Example Overview Configuring Channelized Data Configure this Record/Table To do this Configuring Channelized Data Configuring T1 and E1 Physical Ports Configure PortsStep Action Result 49 or Menu Configure Path Main.6 Node Port Port Record Guidelines Parameters Port NumberPort Type Line Framing Type Transmit Clock INT, RECLine Build Out Facility Data Link Threshold Value LES Threshold Value-LCVThreshold Value-PCV Threshold Value-CSS Threshold Value-ES Threshold Value-BES Threshold Value-SES Threshold Value Sefs Threshold Value UAS Line Coding E1 Port RecordParameters Port Type Line Impedance Threshold Value-CSS Threshold Value-SES Threshold Value UAS Booting Virtual How toEnabling/ Disabling Virtual Ports Port Configuration for Channelized Data Option Configuring Virtual Port Mapping Table What You See Configure Select Virtual Port Mapping Virtual MappingVirtual Port Mapping Table Parameters Virtual Port Number Time Slots DS0 Rate EIA 232-D Signals Motherboard and SDB Function/Signal PinFunction/Signal Name Pin Function Pin Position Signal Name35/V.36 Motherboard Function/Signal External Transmit Clock B Clock a Test Mode35/V.36 SDB Receive Receive Clock Clock B Data Data Terminal Ready V11 Signals Motherboard Position Signal V11 Signals SDB Ethernet Cable Pinouts Additional Information Ethernet RJ-45S Connector SignalsPin Signal +12V Ethernet Cable Pinouts DC Input Power OutputAC Input PathBuilder S24x, 26x, and 27x Switch Specifications Error Codes Numeric Status Service Description/Comments Display Numeric Status Service Description/Comments Technical Support Access by Analog Modem 3ComFacts Automated Fax ServiceAccess by Digital Modem Country Data Rate Telephone Number Country Telephone Number Support from3Com Country Telephone Number Fax Number CTP IndexNumerics DSU FCC Index-3 Simm URL D-1 Disabling Warm Restart World Wide Web WWW D-1 Index-6