Table Of Contents
Cisco 10720 Internet Router Fan Assembly Replacement Instructions
Contents
Overview
Tools and Equipment Required
Safety
Safety Warnings
Disconnect Device Warnings
Electrostatic Discharge
Preventing Electrostatic Discharge
Removing the Fan Assembly from the Router
Installing the Fan Assembly
Verifying Fan Assembly Functionality
Troubleshooting the Fan Assembly
Obtaining Technical Assistance
Contacting Cisco
Cisco.com
Technical Assistance Center
Contacting TAC by Using the Cisco TAC Website
Contacting TAC by Telephone
World Wide Web
Related Documentation
Obtaining Documentation
Documentation CD-ROM
Ordering Documentation
Documentation Feedback
Safety Compliance
Electromagnetic Compatibility Regulatory Statements
FCC Class A Compliance
CISPR 22
Canada
Europe (EU)
Hungarian Class A Warning
Taiwan Class A Warning
Japan VCCI Class A
Korean Class A Warning
Site Wiring Distance and Interference Guidelines
Electromagnetic Interference
Distance Limitations for Signaling and Unshielded Conductors
Translated Safety Warnings
Cisco 10720 Internet Router Fan Assembly Replacement Instructions
Customer Order Number: DOC-7813099=
Product Number: 10720-FAN=
This publication contains instructions to remove and replace the four fan assembly that is automatically equipped in the Cisco 10720 Internet Router. This publication also includes instructions for verifying the operation of the system after you replace the fan assembly.
Refer to Cisco 10720 Internet Router Installation and Configuration Guide for more information about this product line.
This publication uses the following terminology to refer to the Cisco 10720 Internet Router and fan assembly:
Product Name
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Reference
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Cisco 10720 Internet Router
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router
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four fan assembly
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fan assembly
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Contents
Overview
Tools and Equipment Required
Safety
•
Safety Warnings
•Disconnect Device Warnings
Electrostatic Discharge
Removing the Fan Assembly from the Router
Installing the Fan Assembly
Verifying Fan Assembly Functionality
Troubleshooting the Fan Assembly
Obtaining Technical Assistance
•Contacting Cisco
•Technical Assistance Center
–Contacting TAC by Using the Cisco TAC Website
–Contacting TAC by Telephone
•World Wide Web
Related Documentation
Obtaining Documentation
•Documentation CD-ROM
•Ordering Documentation
•Documentation Feedback
Safety Compliance
Translated Safety Warnings
Overview
The router is equipped with an internal four fan assembly located at the back of the chassis. The fan assembly offers redundancy, thus if one fan fails, the router can still operate without incident.
Note Fan Number 4 has a guard mounted on it and should remain that way at all times when installed in the router.
Note Replace the fan assembly when a failure has occurred.
You must power down your router before maintaining any field replaceable unit (FRU) module.
Tools and Equipment Required
You will need the following tools and equipment to install and remove the fan assembly:
•ESD-preventive wrist strap
•Number 1 Phillips screwdriver
•Antistatic bag (optional)
•Replacement fan assembly
Safety
This publication contains important safety information that you must read and understand before attempting to install, remove, or modify any hardware in your router. For more safety information, see the "Safety Compliance" section and the "Translated Safety Warnings" section.
For information about regulatory compliance and safety, see the Regulatory Compliance and Safety Information for the Cisco 10720 Internet Router publication that shipped with your router.
Please review the safety guidelines in the following sections to avoid injuring yourself or damaging the equipment:
•Safety Warnings
•Disconnect Device Warnings
Safety Warnings
Before replacing the power supply, note the following safety warnings:
Caution This router is equipped with a redundant power supply. Ensure both power supply connections are disconnected before beginning any procedure.
Warning Read the installation instructions before you connect the system to its power source.
Warning Before working on a system that has an on/off switch, turn OFF the power and unplug the power cord.
Warning Before working on equipment that is connected to power lines, remove jewelry (including rings, necklaces, and watches). Metal objects will heat up when connected to power and ground and can cause serious burns or weld the metal object to the terminals.
Disconnect Device Warnings
The Cisco 10720 Internet Router power source must be disconnected before performing any maintenance task on the hardware modules. Please refer to the safety warnings in the "Powering Down the Router" section of Chapter 5, "Maintaining the Cisco 10720 Internet Router", in the Cisco 10720 Internet Router Installation and Configuration Guide.
Electrostatic Discharge
Electrostatic discharge (ESD) can damage circuit boards and other electronic equipment if they are handled improperly. Such mishandling can result in intermittent or complete failures of the board or other components of the router.
When handling router components, observe the following guidelines to prevent ESD damage:
•Always use an ESD-preventive wrist strap and ensure that the strap makes adequate contact with your skin.
•Attach an ESD-preventive wrist strap to your wrist and to the chassis; or to a bare metal surface. (See Figure 1.)
•The ESD-preventive wrist strap protects equipment from ESD voltages on the body only; ESD voltages on clothing can still cause damage to electronic components.
Caution For safety, periodically check the resistance value of the ESD-preventive wrist strap. The resistance measurement should be between 1 and 10 megohms.
Preventing Electrostatic Discharge
Electrostatic discharge (ESD) damage can cause complete or intermittent equipment failures. Cisco recommends using an ESD-preventive strap when you handle a router or one of its components. Electromagnetic interference (EMI) shielding is an integral component of the router.
Following are guidelines for preventing ESD damage:
•Always use an ESD-preventive wrist or ankle strap and ensure that it makes good skin contact. Connect the equipment end of the connection cord to bare metal on the router chassis. (See Figure 1.)
Figure 1 Attaching an ESD-Preventive strap
•Avoid contact between the component and clothing. The wrist strap protects the component only from ESD voltages on the body; ESD voltages on clothing can still cause damage.
Removing the Fan Assembly from the Router
Perform the following steps to ensure safe removal of the fan assembly:
Step 1 If installed, remove the cable-management cover in order to power down the router. (Refer to Chapter 5, "Maintaining the Cisco 10720 Internet Router", in the Cisco 10720 Internet Router Installation and Configuration Guide.)
Step 2 Power down your router as described in Chapter 5, "Maintaining the Cisco 10720 Internet Router", in the Cisco 10720 Internet Router Installation and Configuration Guide.
Warning Before performing any maintenance on this router or its components, unplug the power cord on AC-input powered routers.
Warning Before performing any of the following procedures, ensure that the power is removed from the DC circuit. To ensure that all power is OFF, locate the circuit breaker on the panel board that services the DC circuit, switch the circuit breaker to the OFF position, and tape the switch handle of the circuit breaker in the OFF position.
Step 3 Attach an ESD-preventive wrist strap to your wrist and to the router; or to a bare metal surface. (See Preventing Electrostatic Discharge.)
Step 4 Remove the router from the wall or rack mount (if mounted). (Refer to Chapter 5, "Maintaining the Cisco 10720 Internet Router", in the Cisco 10720 Internet Router Installation and Configuration Guide.)
Step 5 Remove all interface cables from the access card and uplink card.
Step 6 Remove the access and uplink cards from the router. (Refer to Chapter 5, "Maintaining the Cisco 10720 Internet Router", in the Cisco 10720 Internet Router Installation and Configuration Guide.)
Step 7 Arrange the router so that you face a side panel. (See Figure 2.)
Figure 2 Router Left Side Panel
Step 8 Using a Number 1 Phillips screwdriver, remove the 4 screws that secure the cover to the router chassis. (See Figure 3.) Place the screws in a safe place for later use.
Figure 3 Screws on the Router Cover
Step 9 Slide the cover back toward the fan assembly until the cover disengages from the front of the router chassis. Lift the cover up and away from the router chassis and store it in a safe place until it is installed back on the router chassis. (See Figure 4.)
Figure 4 Removing the Router Cover
Note It is important to replace the cover after completing any maintenance task on the router. This will help reduce the possibility of damage to the router components while the router is not in service.
Step 10 There are 4 fans and 4 separate connectors on the main board. Fan Number 1 is located farthest away from the power supply. Fan Number 4 is located closest to the power supply and must have a guard attached at all times. (See Figure 5.)
Figure 5 Fan Locations at the Back of the Router
1
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Fan Number 1
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3
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Fan Number 3
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2
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Fan Number 2
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4
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Fan Number 4 with fan guard
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Step 11 Disconnect the power supply unit output cable (4 position) from the main board and move it behind the power supply unit in order to access Fan Number 4. (See Figure 6.)
Figure 6 Disconnecting the Power Supply Unit from the Main Board
a
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4 position power supply unit
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Step 12 Remove the power connection for the fan from the main board. (See Figure 7.)
Step 13 Using a Number 1 Phillips screwdriver, unscrew the 2 screws located behind the fan on the back end of the router. (See Figure 7.)
Figure 7 Removing Fan Assembly Mounting Screws
Step 14 After the fan has been fully unsecured from the router, slide the fan forward and lift it out of the router chassis. (See Figure 8 and Figure 9.)
Note Fan Number 4 has a fan guard mounted on it and should remain that way at all times when installed in the router.
Figure 8 Sliding Fan to Remove from Router Chassis
Figure 9 Removing Fan From the Router Chassis
Installing the Fan Assembly
To install the fan assembly, perform the following steps:
Step 1 Verify that the router is powered down. (Refer to Chapter 5, "Maintaining the Cisco 10720 Internet Router", in the Cisco 10720 Internet Router Installation and Configuration Guide.)
Step 2 Attach an ESD-preventive wrist strap to your wrist and to the router; or to a bare metal surface. (See Preventing Electrostatic Discharge.)
Note Step 3 is only required when installing Fan Number 4. To install Fan Numbers 1, 2, and 3, proceed to Step 5.
Step 3 Install the fan guard on Fan Number 4 before securing the fan to the router chassis or operating the router. To install the fan guard, perform the following:
1. Place the fan guard onto the back of the fan. (See Figure 10.)
2. Using four washers, place one on each corner of the fan guard. (See Figure 10.)
3. Using a Number 1 Phillips screwdriver, secure the fan guard and washers to the fan with four screws. (See Figure 10.)
Figure 10 Installing Fan Guard (required on Fan Number 4)
Step 4 Carefully place the fan between the main board and the back of the router chassis and slide the fan into position. (See Figure 11 and Figure 12.)
Figure 11 Placing Fan in Router Chassis
Figure 12 Positioning Fan inside Router Chassis
Step 5 Using a Number 1 Phillips screwdriver, secure the fan to the router chassis with two screws. (See Figure 13.) The fan assembly is now installed in the back of the router.
Figure 13 Replacing Screws to Secure Fan Assembly
Step 6 Move the power supply unit output cable (4 position) out from behind the power supply unit and reconnect it to the main board. (See Figure 14.)
Figure 14 Connecting the Power Supply Unit to the Main Board
c
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4 position power supply unit
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Step 7 Connect the fan power connection to the main board. (See Figure 15.)
Figure 15 Installing the Fan Power Cable to Main Board
Step 8 Arrange the router so that you face a side panel. (See Figure 2.)
Step 9 Place the router cover over the router and align the front edge of the router with the front lip of the router chassis. Slide the cover down and forward until the router cover is firmly seated under the front lip of the router chassis. Lower the back of the cover to close the router. (See Figure 16.)
Figure 16 Positioning the Cover in the Router
Step 10 Using a Number 1 Phillips screwdriver, secure the router cover with four screws. (See Figure 17.)
Figure 17 Replacing the Router Cover
Step 11 Reinstall the router on a rack, desktop, or table. (Refer to Chapter 5, "Maintaining the Cisco 10720 Internet Router", in the Cisco 10720 Internet Router Installation and Configuration Guide.)
Step 12 Reinstall the access and uplink cards in the router. (Refer to Chapter 5, "Maintaining the Cisco 10720 Internet Router", in the Cisco 10720 Internet Router Installation and Configuration Guide.)
Step 13 Reconnect all interface cables to the uplink card and access card.
Step 14 Reconnect the AC power cord or rewire the DC power supply to the router. (Refer to Chapter 5, "Maintaining the Cisco 10720 Internet Router", in the Cisco 10720 Internet Router Installation and Configuration Guide.
Note Make sure the power supply leads are secured with a cable tie on the DC power supply.
Step 15 Power up the router. (Refer to Chapter 5, "Maintaining the Cisco 10720 Internet Router", in the Cisco 10720 Internet Router Installation and Configuration Guide.
Verifying Fan Assembly Functionality
Use the show environment all command to read the status of the fans within the router chassis. See the router output example below:
router# show environment all
Power Supplies:
Power Supply is ok.
Temperature readings:
chassis inlet measured at 27C/80F
chassis outlet0 measured at 33C/91F
chassis outlet1 measured at 32C/89F
Voltage readings:
Main Board :Voltage Ok
Access Card :Voltage Ok
Uplink Card :Voltage Ok
Fans:
Fan 1 status is believed to be ok.
Fan 2 status is believed to be ok.
Fan 3 status is believed to be ok.
Fan 4 status is believed to be ok.
Power Supply Fan status is believed to be ok.
Envm stats saved 1 time(s) since reload
Router#
Troubleshooting the Fan Assembly
Please read the following checklist for troubleshooting tips for the fan assembly:
•Check for proper seating of fan connection on main board.
•Be sure all power connections have been restored to ON.
•Ensure adequate ventilation is available.
For more troubleshooting tips on the Cisco 10720 Internet Router, refer to Chapter 4, "Troubleshooting", in the Cisco 10720 Internet Router Installation and Configuration Guide.
Obtaining Technical Assistance
Cisco provides Cisco.com as a starting point for all technical assistance. Customers and partners can obtain documentation, troubleshooting tips, and sample configurations from online tools. For Cisco.com registered users, additional troubleshooting tools are available from the TAC website.
Technical assistance information is presented in the following sections:
•Contacting Cisco
•Technical Assistance Center
•World Wide Web
Contacting Cisco
Cisco provides Cisco.com as a starting point for all technical assistance. Customers and partners can obtain documentation, troubleshooting tips, and sample configurations from online tools. For Cisco.com registered users, additional troubleshooting tools are available from the TAC website.
Cisco.com
Cisco.com is the foundation of a suite of interactive, networked services that provides immediate, open access to Cisco information and resources at anytime, from anywhere in the world. This highly integrated Internet application is a powerful, easy-to-use tool for doing business with Cisco.
Cisco.com provides a broad range of features and services to help customers and partners streamline business processes and improve productivity. Through Cisco.com, you can find information about Cisco and our networking solutions, services, and programs. In addition, you can resolve technical issues with online technical support, download and test software packages, and order Cisco learning materials and merchandise. Valuable online skill assessment, training, and certification programs are also available.
Customers and partners can self-register on Cisco.com to obtain additional personalized information and services. Registered users can order products, check on the status of an order, access technical support, and view benefits specific to their relationships with Cisco.
To access Cisco.com, go to the following website:
http://www.cisco.com
Technical Assistance Center
The Cisco TAC website is available to all customers who need technical assistance with a Cisco product or technology that is under warranty or covered by a maintenance contract.
Contacting TAC by Using the Cisco TAC Website
If you have a priority level 3 (P3) or priority level 4 (P4) problem, contact TAC by going to the TAC website:
http://www.cisco.com/tac
P3 and P4 level problems are defined as follows:
•P3—Your network performance is degraded. Network functionality is noticeably impaired, but most business operations continue.
•P4—You need information or assistance on Cisco product capabilities, product installation, or basic product configuration.
In each of the above cases, use the Cisco TAC website to quickly find answers to your questions.
To register for Cisco.com, go to the following website:
http://www.cisco.com/register/
If you cannot resolve your technical issue by using the TAC online resources, Cisco.com registered users can open a case online by using the TAC Case Open tool at the following website:
http://www.cisco.com/tac/caseopen
Contacting TAC by Telephone
If you have a priority level 1(P1) or priority level 2 (P2) problem, contact TAC by telephone and immediately open a case. To obtain a directory of toll-free numbers for your country, go to the following website:
http://www.cisco.com/warp/public/687/Directory/DirTAC.shtml
P1 and P2 level problems are defined as follows:
•P1—Your production network is down, causing a critical impact to business operations if service is not restored quickly. No workaround is available.
•P2—Your production network is severely degraded, affecting significant aspects of your business operations. No workaround is available.
World Wide Web
You can access the most current Cisco documentation on the World Wide Web at the following sites:
•http://www.cisco.com
•http://www-china.cisco.com
•http://www-europe.cisco.com
Related Documentation
The following section provides some reference material out of the Cisco.com library that may be useful for configuring and maintaining the Cisco 10720 Internet Router:
•Cisco 10720 Internet Router Installation and Configuration Guide
•Regulatory Compliance and Safety Information for the Cisco 10720 Internet Router
•Cisco IOS Software Configuration for the Cisco 10720 Internet Router
•Cisco IOS Software Release 12.0SP
•Release Notes for Cisco IOS Release 12.0SP
•Cisco IOS Release 12.0 Command Reference
Obtaining Documentation
The following sections provide sources for obtaining documentation from Cisco Systems. Access to documentation is presented in the following sections:
•Documentation CD-ROM
•Ordering Documentation
•Documentation Feedback
Documentation CD-ROM
Cisco documentation and additional literature are available in a CD-ROM package, which ships with your product. The Documentation CD-ROM is updated monthly and might be more current than printed documentation. The CD-ROM package is available as a single unit or as an annual subscription.
Ordering Documentation
Cisco documentation is available in the following ways:
•Registered Cisco Direct Customers—Can order Cisco Product documentation from the Networking Products MarketPlace:
http://www.cisco.com/public/ordsum.html
•Registered Cisco.com users—Can order the Documentation CD-ROM through the online Subscription Store:
http://www.cisco.com/go/subscription
•Nonregistered Cisco.com users—Can order documentation through a local account representative by calling Cisco:
–408 526-7208
–North America—800 555-NETS(6387)
Documentation Feedback
If you are reading Cisco product documentation on the World Wide Web, you can submit technical comments electronically. Click Feedback in the toolbar and select Documentation. After you complete the form, click Submit to send it to Cisco.
You can e-mail your comments to bug-doc@cisco.com.
To submit your comments by mail, use the response card behind the front cover of your document, or write to the following address:
Attn. Document Resource Connection
Cisco Systems, Inc.
170 West Tasman Drive
San Jose, CA 95134-9883
We appreciate your comments.
Safety Compliance
Safety compliance information is presented in the following sections:
•Electromagnetic Compatibility Regulatory Statements
•Site Wiring Distance and Interference Guidelines
Electromagnetic Compatibility Regulatory Statements
FCC Class A Compliance
This equipment has been tested and found to comply with the limits for a Class A digital device, pursuant to part 15 of the FCC rules. These limits are designed to provide reasonable protection against harmful interference when the equipment is operated in a commercial environment. This equipment generates, uses, and can radiate radio-frequency energy and, if not installed and used in accordance with the instruction manual, may cause harmful interference to radio communications. Operation of this equipment in a residential area is likely to cause harmful interference, in which case users will be required to correct the interference at their own expense.
Modifying the equipment without Cisco's authorization may result in the equipment no longer complying with FCC requirements for Class A digital devices. In that event, your right to use the equipment may be limited by FCC regulation and you may be required to correct any interference to radio or television communication at your own expense.
You can determine whether your equipment is causing interference by turning it off. If the interference stops, it was probably caused by the Cisco equipment or one of its peripheral devices. If the equipment causes interference to radio or television reception, try to correct the interference by using one or more of the following measures:
•Turn the television or radio antenna until the interference stops.
•Move the equipment to one side or the other of the television or radio.
•Move the equipment farther away from the television or radio.
•Plug the equipment into an outlet that is on a different circuit from the television or radio. (In other words, make certain the equipment and the television or radio are on circuits controlled by different circuit breakers or fuses.)
CISPR 22
Warning This is a class A product. In a domestic environment, this product may cause radio interference, in which case, the user may be required to take adequate measures.
Note For CISPR 22 class B, the use of shielded (i.e. screened) CAT5 or equivalent Ethernet cable is required.
Note This apparatus complies with EN55022 class B conducted emissions requirements on AC main with unshielded or shielded CAT5 Ethernet cabling (i.e. does not require the use of shielded Ethernet cable to meet this requirement.)
Canada
English Statement of Compliance
This class A digital apparatus complies with Canadian ICES-003.
French Statement of Compliance
Cet appareil numérique de la classe A est conforme à la norme NMB-003 du Canada.
Europe (EU)
This apparatus complies with EN55022 Class A and EN55024 standards when used as ITE/TTE equipment, and EN 300 386-2 (EN55022 class B with shielded CAT5 Ethernet cable, non-central office equipment) for Telecommunications Network Equipment (TNE).
Hungarian Class A Warning
Figyelmeztetés a felhasználói kézikönyv számára:
Ez a berendezés "A" osztályú termék, felhasználására és üzembe helyezésére a magyar EMC "A" osztályú követelményeknek (MSZ EN 55022) megfelelõen kerülhet sor, illetve ezen "A" osztályú berendezések csak megfelelõ kereskedelmi forrásból származhatnak, amelyek biztosítják a megfelelõ speciális üzembe helyezési körülményeket és biztonságos üzemelési távolságok alkalmazását.
This equipment is a class A product and should be used and installed properly according to the Hungarian EMC Class A requirements (MSZEN55022). The Class A equipment are derived for typical commercial establishments for which special conditions of installation and protection distance are used.
Taiwan Class A Warning
This is a class A product. In a domestic environment this product may cause radio interference in which case you may be required to take adequate measures.
Note Bureau of Standards, Metrology and Inspection (BSMI) product approval license number is on the product label outside the system enclosure.
Japan VCCI Class A
This is a Class A product based on the standard of the Voluntary Control Council for Interference by Information Technology Equipment (VCCI). If this equipment is used in a domestic environment, radio disturbance may arise. When such trouble occurs, the user may be required to take corrective actions.
Korean Class A Warning
Class A device. This device is registered for EMC requirements for industrial use. The seller or buyer should be aware of this. If this type was sold or purchased by mistake, it should be replaced with a residential-use type.
Site Wiring Distance and Interference Guidelines
This section offers site wiring guidelines for setting up the site plant wiring and cabling. When planning the location of the new system, consider the following:
•Electromagnetic Interference
•Distance Limitations for Signaling and Unshielded Conductors
Electromagnetic Interference
Electromagnetic interference can occur between the field and the signals on the wires when the wires are run for any significant distance. This fact has two implications for the construction of plant wiring:
•Poor wiring practice can result in radio interference emanating from the plant wiring.
•Strong EMI, especially when it is caused by lightning or radio transmitters, can destroy and/or cause interference with the signal drivers and receivers in the Cisco 10720 Internet Router, and can create an electrical hazard by conducting power surges through lines and into equipment.
Note To predict and remedy strong EMI, consult experts in radio frequency interference (RFI).
A good quality twisted pair cable or shielded twisted pair cable helps limit radiation and noise induced into the cable minimizing,
•Potential for radio interference.
•Potential for interference with the data transmission.
Distance Limitations for Signaling and Unshielded Conductors
Give special consideration to the effect of a lightning strike in the site vicinity if wires exceed recommended distances, or if wires pass between buildings. The electromagnetic pulse (EMP) caused by lightning or other high-energy phenomena can easily couple enough energy into unshielded conductors to destroy electronic devices.
Provide a properly grounded and shielded environment. Consider electrical surge suppression issues by addressing the following items:
•Potential surge sources
•Distance
Caution Splicing can degrade cable performance.
Translated Safety Warnings
Safety warnings appear throughout this publication in procedures that, if performed incorrectly, may harm you. A warning symbol precedes each warning statement. The following paragraph is an example of a safety warning. It identifies the warning symbol and associates it with a bodily injury hazard. The remaining paragraphs in this section are translations of the initial safety warning.
Note For a complete list of translated safety warnings, read the Regulatory Compliance and Safety Information for the Cisco 10720 Internet Router document that accompanies your Cisco 10720 Internet Router. We recommend that you read and understand the safety warnings and guidelines before installing, configuring or maintaining the router
.
Table 1 Translated Safety Warnings
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Warning This warning symbol means danger. You are in a situation that could cause bodily injury. Before you work on any equipment, be aware of the hazards involved with electrical circuitry and be familiar with standard practices for preventing accidents. (To see translations of the warnings that appear in this publication, refer to the appendix "Translated Safety Warnings" in the installation guide that accompanied this device.)
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Waarschuwing
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Dit waarschuwingssymbool betekent gevaar. U verkeert in een situatie die lichamelijk letsel kan veroorzaken. Voordat u aan enige apparatuur gaat werken, dient u zich bewust te zijn van de bij elektrische schakelingen betrokken risico's en dient u op de hoogte te zijn van standaard maatregelen om ongelukken te voorkomen. (Voor vertalingen van de waarschuwingen die in deze publicatie verschijnen, kunt u het aanhangsel "Translated Safety Warnings" (Vertalingen van veiligheidsvoorschriften) in de installatiegids die bij dit toestel is ingesloten, raadplegen.
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Varoitus
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Tämä varoitusmerkki merkitsee vaaraa. Olet tilanteessa, joka voi johtaa ruumiinvammaan. Ennen kuin työskentelet minkään laitteiston parissa, ota selvää sähkökytkentöihin liittyvistä vaaroista ja tavanomaisista onnettomuuksien ehkäisykeinoista. (Tässä julkaisussa esiintyvien varoitusten käännökset löydät tämän laitteen mukana olevan asennusoppaan liitteestä "Translated Safety Warnings" (käännetyt turvallisuutta koskevat varoitukset).)
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Attention
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Ce symbole d'avertissement indique un danger. Vous vous trouvez dans une situation pouvant entraîner des blessures. Avant d'accéder à cet équipement, soyez conscient des dangers posés par les circuits électriques et familiarisez-vous avec les procédures courantes de prévention des accidents. Pour obtenir les traductions des mises en garde figurant dans cette publication, veuillez consulter l'annexe intitulée « Translated Safety Warnings » (Traduction des avis de sécurité) dans le guide d'installation qui accompagne cet appareil.
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Warnung
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Dieses Warnsymbol bedeutet Gefahr. Sie befinden sich in einer Situation, die zu einer Körperverletzung führen könnte. Bevor Sie mit der Arbeit an irgendeinem Gerät beginnen, seien Sie sich der mit elektrischen Stromkreisen verbundenen Gefahren und der Standardpraktiken zur Vermeidung von Unfällen bewußt. (Übersetzungen der in dieser Veröffentlichung enthaltenen Warnhinweise finden Sie im Anhang mit dem Titel "Translated Safety Warnings" (Übersetzung der Warnhinweise) in der diesem Gerät beiliegenden Installationsanleitung.)
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Avvertenza
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Questo simbolo di avvertenza indica un pericolo. Si è in una situazione che può causare infortuni. Prima di lavorare su qualsiasi apparecchiatura, occorre conoscere i pericoli relativi ai circuiti elettrici ed essere al corrente delle pratiche standard per la prevenzione di incidenti. La traduzione delle avvertenze riportate in questa pubblicazione si trova nell'appendice, "Translated Safety Warnings" (Traduzione delle avvertenze di sicurezza), del manuale d'installazione che accompagna questo dispositivo.
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Advarsel
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Dette varselsymbolet betyr fare. Du befinner deg i en situasjon som kan føre til personskade. Før du utfører arbeid på utstyr, må du være oppmerksom på de faremomentene som elektriske kretser innebærer, samt gjøre deg kjent med vanlig praksis når det gjelder å unngå ulykker. (Hvis du vil se oversettelser av de advarslene som finnes i denne publikasjonen, kan du se i vedlegget "Translated Safety Warnings" [Oversatte sikkerhetsadvarsler] i installasjonsveiledningen som ble levert med denne enheten.)
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Aviso
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Este símbolo de aviso indica perigo. Encontra-se numa situação que lhe poderá causar danos fisicos. Antes de começar a trabalhar com qualquer equipamento, familiarize-se com os perigos relacionados com circuitos eléctricos, e com quaisquer práticas comuns que possam prevenir possíveis acidentes. (Para ver as traduções dos avisos que constam desta publicação, consulte o apêndice "Translated Safety Warnings" - "Traduções dos Avisos de Segurança", no guia de instalação que acompanha este dispositivo).
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¡Advertencia!
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Este símbolo de aviso significa peligro. Existe riesgo para su integridad física. Antes de manipular cualquier equipo, considerar los riesgos que entraña la corriente eléctrica y familiarizarse con los procedimientos estándar de prevención de accidentes. (Para ver traducciones de las advertencias que aparecen en esta publicación, consultar el apéndice titulado "Translated Safety Warnings," en la guía de instalación que se acompaña con este dispositivo.)
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Varning!
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Denna varningssymbol signalerar fara. Du befinner dig i en situation som kan leda till personskada. Innan du utför arbete på någon utrustning måste du vara medveten om farorna med elkretsar och känna till vanligt förfarande för att förebygga skador. (Se förklaringar av de varningar som förekommer i denna publikation i appendix "Translated Safety Warnings" [Översatta säkerhetsvarningar] i den installationshandbok som medföljer denna anordning.)
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This document is to be used in conjunction with the documents listed in the Cisco 10720 Internet RouterInstallation and Configuration Guide.
Copyright © 2003 Cisco Systems, Inc. All rights reserved.
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