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34

A

PPENDIX

A: S

AFETY

I

NFORMATION

■

Débranchez les conducteurs électriques secteur avant de procéder
à une intervention d'entretien courant.

Wichtige Sicherheitsinformationen

Bitte unbedingt vor dem Einbauen des Advanced RPS Einheit
die folgenden Sicherheitsanweisungen durchlesen.

WARNUNG

: Die Installation des Stromversorgungsmoduls darf

ausschließlich von hinreichend ausgebildetem Wartungspersonal
durchgeführt werden. Lesen Sie dazu im Type 3 Power Module
Installation Guide nach.

Der Ein- und Ausbau der Anlage ist nur von ausgebildetem
Wartungspersonal auszuführen.

WARNUNG

: Bitte überladen Sie nicht das Chassis — bezugnehmend

auf Tabelle 2 "maximale Anzahl der Advanced RPS Powermodule per
Chassis" und halten Sie die Limitierung ein. Es ist wichtig, daß Sie die
Limitierung nicht überschreiten.

■

Das Gerät an geerdete Stromversorgung anschließen, um eine
Übereinstimmung mit den Sicherheitsbestimmungen zu
gewährleisten.

■

Es ist wichtig, daß der Netzstecker sich in unmittelbarer Nähe zum
Gerät befindet und leicht erreichbar ist. Das Gerät kann nur durch
Herausziehen des Verbindungssteckers aus der Steckdose vom
Stromnetz getrennt werden.

■

Beim Einbau des Advanced RPS Chassis in einen Stack mit
SuperStack Einheiten wird das Advanced RPS Chassis unten in
den Stack gesetzt.

■

Das Gerät wird mit Sicherheits-Kleinspannung nach IEC 60950
(SELV = Safety Extra Low Voltage) betrieben. Angeschloßen
werden k

ö

nnen nur Geräte, die ebenfalls nach SELV betrieben

werden.

■

Die Anordnung der Gerätsteckvorrichtung, d.h. die
Steckverbindung am Gerät selbst im Gegensatz zum
Wandstecker, muß in den EN60320/IEC320 Zuführungsstecker
am Gerät passen.

■

Der Anschlußkabelsatz muß mit den Bestimmungen des Landes
übereinstimmen, in dem er verwendet werden soll.

16070ug4.bk.book Page 34 Thursday, December 14, 2000 12:17 PM

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Содержание SuperStack 3

Страница 1: ...http www 3com com SuperStack 3 Advanced RPS User Guide 3C16071B Part No DUA1607 0AAA04 Rev 01 Published November 2000 ...

Страница 2: ...subject to the following All technical data and computer software are commercial in nature and developed solely at private expense Software is delivered as Commercial Computer Software as defined in DFARS 252 227 7014 June 1995 or as a commercial item as defined in FAR 2 101 a and as such is provided with only such rights as are provided in 3Com s standard commercial license for the Software Techn...

Страница 3: ... 12 Advanced RPS Chassis Rear View Detail 13 Power Sockets Mains AC Power 13 Power Module Slots 14 Management Module Slot 14 Power Modules 15 Type 1 60 W Power Module 3C16072 15 Type 1 100 W Power Module 3C16073 15 Type 2A 100 W Power Module 3C16074A 15 Type 3 325 W Power Module 3C16075 16 Power Module Cables 16 Type 1 DC Cables 16 Type 2 DC Cables 17 Type 3 DC Cables 17 Using the Advanced RPS 18 ...

Страница 4: ...s 26 Powering Up the Advanced RPS 26 Checking for Correct Operation 27 Additional Information 27 Connecting an Uninterruptible Power System UPS 28 SAFETY INFORMATION Important Safety Information 29 L information de Sécurité Importante 32 Wichtige Sicherheitsinformationen 34 Europe 35 TECHNICAL SPECIFICATIONS SuperStack 3 Advanced RPS Chassis 37 Power Modules 38 Electrical 38 Type 1 60 W Power Modu...

Страница 5: ...id Configurations 43 Power Module Usage 43 Units not supported 47 Obsolete Products 48 TROUBLESHOOTING TECHNICAL SUPPORT Online Technical Services 53 World Wide Web Site 53 3Com Knowledgebase Web Services 53 3Com FTP Site 54 Support from Your Network Supplier 54 Support from 3Com 54 Returning Products for Repair 56 INDEX 3COM CORPORATION LIMITED WARRANTY REGULATORY NOTICES ...

Страница 6: ......

Страница 7: ...tably qualified service personnel only Refer to the Type 3 Power Module Installation Guide This guide explains How to install the Advanced RPS How to set up the Advanced RPS to provide the power supply protection you need This guide does not show you How to manage the Advanced RPS How to install other SuperStack products If release notes are shipped with your product and the information there diff...

Страница 8: ...overall description of the Advanced RPS Chapter 1 How to install the Advanced RPS Chapter 2 Safety Information applicable to the Advanced RPS Appendix A Technical Information about the Advanced RPS Appendix B Permitted configurations for the Power Modules Appendix C Troubleshooting Appendix D How you can contact 3Com for support Appendix E Table 1 Notice Icons Icon Notice Type Description Informat...

Страница 9: ...n more useful to you Please e mail comments about this document to 3Com at pddtechpubs_comments 3com com Please include the following information when commenting Document title Document part number on the title page Page number if appropriate Example SuperStack 3 Advanced RPS User Guide Part Number DUA1607 0AAA03 Page 21 Product Registration You can now register your SuperStack unit on the 3Com we...

Страница 10: ...10 ABOUT THIS GUIDE ...

Страница 11: ...bility to supply power to your SuperStack network devices in the event of a failure of an internal power supply Alternatively some SuperStack 3 units can use the Advanced RPS as their default power supply and if this fails they revert to their internal power supply Check the Getting Started Guide that accompanies your Switch for more information The Advanced RPS chassis in combination with a range...

Страница 12: ...ght hand one of the two sockets labelled Primary Pwr A when looking at the rear of the unit Two OUTPUT LEDs arranged vertically are allocated to each power module slot on the rear of the Advanced RPS The numbering of the slots when looking at the rear of the unit is Top row left to right 7 5 3 1 Bottom row left to right 8 6 4 2 The OVERTEMP LED provides an indication of the chassis temperature sta...

Страница 13: ...nnected to relevant input and is OK Off AC power is not connected to relevant input or there is an AC power fault Power Module Status LEDs OUTPUT OK Green Power module is connected to a SuperStack unit and is enabled and supplying power Off Power module is not present is not enabled or is not supplying power OUTPUT FAULT Yellow Power module is required to deliver power but cannot Off Power module ...

Страница 14: ...imary power source is always connected to inlet A and the backup supply connected to inlet B If the power to inlet A fails the chassis will reset and switch to use inlet B If the power to inlet A recovers the chassis will reset again and change back to use its primary power source inlet A The reset time is approximately 13 seconds Power Module Slots You can fit a selection of power modules into th...

Страница 15: ...or is shown in Figure 3 Figure 3 Front View of Connector for 3C16072 and 3C16073 Type 1 Type 1 100 W Power Module 3C16073 This module is suitable for powering a specific range of SuperStack units See Appendix C for a list of these units A standard DC power cable is supplied with each module A front view of the module connector is shown in Figure 3 Type 2A 100 W Power Module 3C16074A This module is...

Страница 16: ...rd DC Cable supplied with each power module Use the standard DC cable to provide power redundancy by connecting the outlet of the power module to the Redundant Power System socket on the rear of the SuperStack unit Optional Y DC Cable obtained from your supplier Use a DC Y cable of the appropriate type to provide full redundancy by connecting the two short leads to two power module outlets and the...

Страница 17: ...les can be used with the Type 2 Power Module 3C16074 or the Type 2A Power Module 3C16074A Figure 6 Type 2 DC Y Cable 3C16078 Type 3 DC Cables Use a Type 3 DC cable supplied with each Type 3 Power Module to connect a Type 3 Power Module to a SuperStack unit An optional Type 3 Y DC cable 3C16077 is available to connect two Type 3 Power Modules to a SuperStack unit for full redundancy CAUTION The Typ...

Страница 18: ...r SuperStack unit directly to the power module using the standard DC cable supplied with the module see Figure 8 The power module acts as a highly reliable power supply that can be swapped in the event of a failure CAUTION Do not connect your SuperStack units to the AC mains supply Figure 8 Advanced RPS Standard Usage Configuration Managed Redundancy Managed Redundancy can only be used with a Supe...

Страница 19: ...power cycle Some SuperStack units when set up in this configuration can use the Advanced RPS as their primary source of power In the case of Advanced RPS failure the SuperStack unit s own PSU acts as a redundant power supply and will take over supplying power to the SuperStack unit Please refer to the documentation that accompanies the SuperStack unit for more information Figure 9 Advanced RPS Man...

Страница 20: ...dule will take the full load The faulty module can be hot swapped that is you do not need to remove power from the chassis before you remove or insert a power module to return the system to full redundancy This prevents the reset that occurs in the managed redundancy mode Refer to the Advanced RPS Type 3 Power Module Installation Guide and Advanced RPS Type 3 Y Cable Installation Guide Figure 10 A...

Страница 21: ...on Before installing or removing any components from the SuperStack 3 Advanced RPS or carrying out any maintenance procedures you must read the safety information provided in Appendix A of this guide AVERTISSEMENT Consignes de sécurité Avant d installer ou d enlever tout composant du SuperStack 3 Advanced RPS ou d entamer une procédure de maintenance lisez les informations relatives à la sécurité ...

Страница 22: ...cted easily Cabling is away from Sources of electrical noise such as radio transmitters broadband amplifiers and heavy electrical equipment Power lines and fluorescent lighting fixtures Water or moisture cannot enter the case of the unit Air flow around the unit and through the vents in the side of the case is not restricted 3Com recommend that you provide a minimum of 75 mm 3 in clearance To prol...

Страница 23: ...rs or a tray When mounting the unit you should take note of the guidelines given below CAUTION Disconnect all cables from the Advanced RPS before continuing Remove the self adhesive pads from underside of unit if already fitted Figure 11 Fitting a bracket for rack mounting 1 Place the unit the right way up on a hard flat surface 2 Locate a mounting bracket over the mounting holes on one side of th...

Страница 24: ...er unit line up with the recesses of the lower unit Installing a Power Module CAUTION The Type 3 DC Power Module is for installation by suitably qualified service personnel only Refer to the Type 3 Power Module Installation Guide CAUTION Never plug a hot power module into the Advanced RPS You may damage the power module Allow 10 minutes for the unit to cool down before inserting it into the power ...

Страница 25: ...DC Power Module is for installation by suitably qualified service personnel only Refer to the Type 3 Power Module Installation Guide 1 Take off the blanking plate by removing the fixing screws Keep the blanking plate and screws in a safe place If you remove the module at any time you must replace the blanking plate 2 Hold the power module so that any text on the front panel is upright and insert i...

Страница 26: ... safe as it will need to be replaced if you remove the cable at any time Connect one end of the cable to the power module outlet and the other end of the cable to the Redundant Power System socket on the rear of the SuperStack unit For more information refer to the documentation that accompanies the power module you are installing Optional Y DC Cables Refer to the Advanced RPS Type 3 Power Module ...

Страница 27: ...ug the AC power cord s into a mains outlet Checking for Correct Operation When powered up the INPUT LEDs should light green Only one LED lights if there is only one AC power cord connected If a power module is supplying power to a SuperStack unit then the OUTPUT LED corresponding to this power module will light green See LEDs on page 12 There is an approximate 5 second time delay after power up be...

Страница 28: ...rce of power In the event of Advanced RPS failure the SuperStack unit s own PSU acts as a redundant power supply and will take over supplying power to the SuperStack unit Please refer to the documentation that accompanies the SuperStack unit for more information If the product you wish to connect does not have the auto enable feature ensure the power cord is removed from it before attempting to co...

Страница 29: ...les consignes suivantes de sécurité avant d installer ou de retirer l appareil WARNHINWEIS Warnhinweise enthalten Anweisungen die Sie zu Ihrer eigenen Sicherheit befolgen müssen Alle Anweisungen sind sorgfältig zu befolgen Sie müssen die folgenden Sicherheitsinformationen sorgfältig durchlesen bevor Sie das Gerät installieren oder ausbauen Important Safety Information Please read the following saf...

Страница 30: ...t is connected also operates under SELV The appliance coupler the connector to the device itself and not the wall plug must have a configuration for mating with an EN60320 IEC320 appliance inlet Use only the special cables designed and supplied for this product Power Cord Set This must be approved for the country where it is used U S A and Canada The cord set must be UL approved and CSA certified ...

Страница 31: ...ng that 3C16071A or 3C16071B appears on the serial number label on the base of the chassis the front panel overlay and also on the packaging label If the A or B suffix is not shown the 3C16071 does not provide dual phase support and must be powered from AC sources of the same phase Disconnect both AC power leads before servicing Europe only The supply plug must comply with CEE 7 7 SCHUKO The mains...

Страница 32: ...té à une source de courant mise à la terre pour assurer la conformité aux normes de sécurité C est essentiel que le socle soit installé près de l unité et soit accessible Vous pouvez seulement débrancher l unité en enlevant la fiche d alimentation de la prise de courant Si vous installez le Advanced RPS Chassis dans une pile de modules SuperStack placez le Advanced RPS Chassis en bas de la pile Ce...

Страница 33: ... n est pas indiqué le 3C16071 ne fournit pas la fonction double phase et il faut le mettre sous tension à partir des sources de courant alternatif de la même phase Etats Unis et Canada Le cordon doit avoir reçu l homologation des UL et un certificat de la CSA Le cordon souple doit respecter à titre minimum les spécifications suivantes calibre 18 AWG type SV ou SJ à 3 conducteurs Le cordon doit êtr...

Страница 34: ...imitierung nicht überschreiten Das Gerät an geerdete Stromversorgung anschließen um eine Übereinstimmung mit den Sicherheitsbestimmungen zu gewährleisten Es ist wichtig daß der Netzstecker sich in unmittelbarer Nähe zum Gerät befindet und leicht erreichbar ist Das Gerät kann nur durch Herausziehen des Verbindungssteckers aus der Steckdose vom Stromnetz getrennt werden Beim Einbau des Advanced RPS ...

Страница 35: ...en SCHUKO 3Com verlangt von Ihnen die Bestätigung daß Ihr Chassis die duale Phasenfunktion unterstützt indem Sie nachprüfen daß 3C16071A oder 3C16071B auf der Seriennummernplakette an der Chassis Basis am Frontplatten Overlay sowie am Verpackungsetikett erscheint Falls weder A moch B im suffix erscheint sorgt 3C16071 nicht für duale Phasenunterstützung und muß von AC Quellen derselben Phase gespei...

Страница 36: ...36 APPENDIX A SAFETY INFORMATION ...

Страница 37: ... 3Com schedule Package testing paras 2 1 2 2 2 30 and 2 32 Operational testing paras 2 1 2 2 2 30 and 2 13 Safety Agency Certifications IEC 60950 UL 1950 EN60950 CSA 22 2 No 950 EMC Emissions CISPR22 Class A EN55022 Class A FCC Part 15 Subpart B Class A ICES 003 Class A VCCI Class A AS NZS3548 Class A CNS13438 Class A EN61000 3 2 EN61000 3 3 Immunity EN55024 Output Power 480 W 650 W when used with...

Страница 38: ...ical Input Power 167 W Type 2A 100 W Power Module Typical Input Power 167 W Maximum power output 5 V 8 5 A 12 6 V 2 5 A 12 0 V 1 0 A Total output power 60 W maximum Maximum power output 5 V 15 0 A 12 6 V 2 5 A 12 0 V 1 0 A Total output power 100 W maximum Maximum power output 3 3 V 25 0 A 5 V 15 0 A 12 6 V 2 5 A Total output power 100 W maximum ...

Страница 39: ... by suitably qualified service personnel only Refer to the Type 3 Power Module Installation Guide Typical Input Power 365 W Physical Dimensions Maximum power output 27 V 12 0 A Total continuous output power 325 W maximum Weight 550g 1 21lb Height 40 mm 1 6 in Width 86 mm 3 4 in Depth 267 mm 10 5 in ...

Страница 40: ...40 APPENDIX B TECHNICAL SPECIFICATIONS ...

Страница 41: ...le per Chassis und halten Sie die Limitierung ein Es ist wichtig daß Sie die Limitierung nicht überschreiten Valid Configurations Single Module Configurations The maximum output DC power of the Advanced RPS is 480 W However this can be exceeded only if installing two Type 3 Power Modules All other power module combinations must not exceed 480 W Refer to Table 2 for details on the chassis loading l...

Страница 42: ...r to the Type 3 Power Module Installation Guide Install the power modules in slots 7 and 8 Install the 100 W and Type 3 Module in slots 7 and 8 and the 60 W Module in slot 5 or 6 whichever is next to the 100 W Module Install the Type 3 Module in slot 7 and the 60 W Modules in slots 8 and 5 Install two Type 3 Modules in the chassis using single DC cables that is both modules drawing power separatel...

Страница 43: ...n 480 W unless you are installing two Type 3 Power Modules For example five Type 1 100 W or Type 2 100W modules using the standard DC cable supplied with the modules will cause over heating to occur within the chassis Connect a power module to a SuperStack unit whose input DC power exceeds the output DC power of the power module The documentation that accompanies your SuperStack unit will provide ...

Страница 44: ...lder 227 3C8228C NETBuilder 228 3C8252A LinkConverter II 252 3C8254A LinkConverter II 254 3C8323C NETBuilder 323 3C8327C NETBuilder 327 3C8352A LinkConverter II 352 3C8354A LinkConverter II 354 3C8421C NETBuilder 421 3C8422C NETBuilder 422 3C8423C NETBuilder 423 3C8424C NETBuilder 424 3C8427C NETBuilder 427 3C8523C NETBuilder 523 3C8527C NETBuilder 527 3C16400 Port Switch Hub 10 12 port also with ...

Страница 45: ...ch 610 3C16900A Switch 1000 24 port also with 3C1206x or 3C16920 2 modules fitted 3C16901A Switch 1000 12 port also with 3C1206x or 3C16920 2 modules fitted 3C16950 Switch 1100 24 port also with 3C1206x or 3C16920 2 modules fitted 3C16951 Switch 1100 12 port also with 3C1206x or 3C16920 2 modules fitted 3C16902 Desk Top Switch also with 3C1206x or 3C16920 2 modules fitted 3C16940A Switch 3000 FX a...

Страница 46: ...3C16950 Switch 1100 24 port fitted with 3C16970 1 5 modules 3C16951 Switch 1100 12 port fitted with 3C16970 1 5 modules 3C16902 Desk Top Switch fitted with 3C16930 module 3C16940A Switch 3000 FX fitted with 3C16930 module 3C16941A Switch 3000 TX fitted with 3C16930 module 3C16942 Switch 3000 TX 12 port also with 3C16920 2 or 3C16930 modules fitted 3C220000A Switch 2200 with modules SuperStack Prod...

Страница 47: ...5 Baseline 10 100 Switch 24 port SuperStack Products requiring a Type 3 Power Module 3C17700 Switch 4900 3C17702 Switch 4900SX SuperStack Products NOT supported by the Advanced RPS 3C16910 Switch 3800 3C16990 Switch 9000 3C81600 Enterprise Monitor including various RMON Probes 3C8930A DC Voltage Converter 3 port 3C8960A DC Voltage Converter 6 port 3C16010 1 2 UPS 3C565047A RPS ...

Страница 48: ...24 port TP also with 3C16630A or 3C16632 Management Module and 3C1206X Transceiver Module fitted 3C16672 FMS II Telco also with 3C16630A or 3C16632 Management Module and 3C1206X Transceiver Module fitted 3C510510B FMS TR 12 port 3C510511B FMS TR 24 port NETBuilder Routers 3C8200C NETBuilder Remote Office 200 3C8201C NETBuilder Remote Office 201 3C8221C NETBuilder Remote Office 221 3C8222C NETBuild...

Страница 49: ...d 3C16941 LinkSwitch 3000 TP also with 3C16920 2 modules fitted 3C32700A Switch 2700 OC 3 Multimode ATM 3C32710A Switch 2700 DS 3 ATM 3C32711A Switch 2700 OC 3 Singlemode ATM AccessBuilder 3C7204 AccessBuilder 2204 3C7208 AccessBuilder 2208 LinkConverter 3C8252A LinkConverter II 252 3C8254A LinkConverter II 254 3C8352A LinkConverter II 352 3C8354A LinkConverter II 354 Superseded Product requiring ...

Страница 50: ...50 APPENDIX C MODULE CONFIGURATIONS 3C32700A Switch 2700 OC 3 Multimode ATM 3C32710A Switch 2700 DS 3 ATM 3C32711A Switch 2700 OC 3 Singlemode ATM 3C220000A LinkSwitch 2200 ...

Страница 51: ...ON Mains power is not present AC cable may be incorrectly connected Power cord may be faulty LED has failed Contact your supplier Power module present No Output LED ON Power module is incorrectly installed DC cable is not connected SuperStack unit is not connected SuperStack unit does not require RPS power LED has failed Contact your supplier Power module present Yellow LED ON Power module connect...

Страница 52: ...52 APPENDIX D TROUBLESHOOTING ...

Страница 53: ...gebase Web Services 3Com FTP site World Wide Web Site To access the latest networking information on the 3Com Corporation World Wide Web site enter this URL into your Internet browser http www 3com com This service provides access to online support information such as technical documentation and software as well as support options that range from technical education to maintenance and professional...

Страница 54: ...our network supplier Many suppliers are authorized 3Com service partners who are qualified to provide a variety of services including network planning installation hardware maintenance application training and support services When you contact your network supplier for assistance have the following information ready Product model name part number and serial number A list of system hardware and sof...

Страница 55: ...bers Country Telephone Number Asia Pacific Rim Australia Hong Kong India Indonesia Japan Malaysia New Zealand Pakistan Philippines P R of China Singapore S Korea From anywhere in S Korea From Seoul Taiwan R O C Thailand 1 800 678 515 800 933 486 61 2 9937 5085 001 800 61 009 0531 61 6439 1800 801 777 0800 446 398 61 2 9937 5083 1235 61 266 2602 10800 61 00137 or 021 6350 1590 800 6161 463 82 2 345...

Страница 56: ... Poland Portugal Russia South Africa Spain Sweden Switzerland U K 0800 297468 0800 71429 800 17309 0800 113153 0800 917959 0800 1821502 06800 12813 1800 553117 1800 9453794 1678 79489 0800 3625 1800 945 3794 0800 0227788 800 11376 00800 3111206 0800 831416 0800 995014 0800 995014 900 983125 020 795482 0800 55 3072 0800 966197 Latin America Argentina Brazil Colombia Mexico Puerto Rico South America...

Страница 57: ...ee numbers select option 2 and then option 2 Austria Belgium Denmark Finland France Germany Hungary Ireland Israel Italy Netherlands Norway Poland Portugal South Africa Spain Sweden Switzerland U K 0800 297468 0800 71429 800 17309 0800 113153 0800 917959 0800 1821502 00800 12813 1800553117 1800 9453794 1678 79489 0800 0227788 800 11376 00800 3111206 0800 831416 0800 995014 900 983125 020 795482 08...

Страница 58: ...58 APPENDIX E TECHNICAL SUPPORT ...

Страница 59: ...is Guide 8 D Dual phase support 13 F FTP site 54 fuses 25 L LEDs 12 loading limitations chassis 41 M mains AC power Backup Pwr B 13 27 power sockets 13 Primary Pwr A 13 27 management module 14 MIBs 54 N network supplier support 54 O online technical services 53 P power cord 28 30 power cycle 19 27 Power Module dimensions 39 electrical 38 full redundancy configurations 43 invalid configurations 43 ...

Страница 60: ...roducts for repair 56 RPS connector 19 S Safety Information English 29 French 32 German 34 SNMP 14 stacking units 24 T technical support 3Com Knowledgebase Web Services 53 3Com URL 53 network suppliers 54 product repair 56 U UPS Uninterruptible Power System 14 28 URL 53 W World Wide Web WWW 53 ...

Страница 61: ...ts software products will meet Customer s requirements or work in combination with any hardware or applications software products provided by third parties that the operation of the software products will be uninterrupted or error free or that all defects in the software products will be corrected For any third party products listed in the 3Com software product documentation or specifications as b...

Страница 62: ...or five 5 years after which time it may be available for a specified fee but in either case only if Customer provides a purchase order number credit card number or other method of payment acceptable to 3Com to be used if 3Com needs to charge Customer for the replacement as explained below 3Com will make commercially reasonable efforts to ship the replacement product not later than five 5 business ...

Страница 63: ...TA OR OTHER FINANCIAL LOSS ARISING OUT OF OR IN CONNECTION WITH THE SALE INSTALLATION MAINTENANCE USE PERFORMANCE FAILURE OR INTERRUPTION OF ITS PRODUCTS EVEN IF 3COM OR ITS AUTHORIZED RESELLER HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES AND LIMITS ITS LIABILITY TO REPAIR REPLACEMENT OR REFUND OF THE PURCHASE PRICE PAID AT 3COM S OPTION THIS DISCLAIMER OF LIABILITY FOR DAMAGES WILL NOT BE ...

Страница 64: ...e the equipment away from the receiver Plug the equipment into a different outlet so that equipment and receiver are on different branch circuits If necessary the user should consult the dealer or an experienced radio television technician for additional suggestions The user may find the following booklet prepared by the Federal Communications Commission helpful How to Identify and Resolve Radio T...

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