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Product Number: CISCO3660-FanAssy=
This document describes how to replace the fan cage in Cisco 3660 routers.
Use this document in conjunction with the Cisco 3600 Series Hardware Installation Guide and the Regulatory Compliance and Safety Information document for your router. If you have questions or need help, refer to the "Cisco Connection Online" section.
This document contains the following sections:
Follow these guidelines to ensure general safety:
Safety warnings appear throughout this publication in procedures that, if performed incorrectly, may harm you. A warning symbol precedes each warning statement.
 | Warning 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 Regulatory Compliance and Safety Information document that accompanied this device. |
Waarschuwing 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 document Regulatory Compliance and Safety Information (Informatie over naleving van veiligheids- en andere voorschriften) raadplegen dat bij dit toestel is ingesloten.
Varoitus 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 laitteen mukana olevasta Regulatory Compliance and Safety Information -kirjasesta (määräysten noudattaminen ja tietoa turvallisuudesta).
Attention Ce symbole d'avertissement indique un danger. Vous vous trouvez dans une situation pouvant causer des blessures ou des dommages corporels. Avant de travailler sur un équipement, soyez conscient des dangers posés par les circuits électriques et familiarisez-vous avec les procédures couramment utilisées pour éviter les accidents. Pour prendre connaissance des traductions d'avertissements figurant dans cette publication, consultez le document Regulatory Compliance and Safety Information (Conformité aux règlements et consignes de sécurité) qui accompagne cet appareil.
Warnung 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 Dokument Regulatory Compliance and Safety Information (Informationen zu behördlichen Vorschriften und Sicherheit), das zusammen mit diesem Gerät geliefert wurde.
Avvertenza Questo simbolo di avvertenza indica un pericolo. La situazione potrebbe causare infortuni alle persone. 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 nel documento Regulatory Compliance and Safety Information (Conformità alle norme e informazioni sulla sicurezza) che accompagna questo dispositivo.
Advarsel Dette varselsymbolet betyr fare. Du befinner deg i en situasjon som kan føre til personskade. Før du utfører arbeid på utstyr, må du vare 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 dokumentet Regulatory Compliance and Safety Information (Overholdelse av forskrifter og sikkerhetsinformasjon) som ble levert med denne enheten.
Aviso Este símbolo de aviso indica perigo. Encontra-se numa situação que lhe poderá causar danos físicos. 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 documento Regulatory Compliance and Safety Information (Informação de Segurança e Disposições Reguladoras) que acompanha este dispositivo.
¡Advertencia! 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 una traducción de las advertencias que aparecen en esta publicación, consultar el documento titulado Regulatory Compliance and Safety Information (Información sobre seguridad y conformidad con las disposiciones reglamentarias) que se acompaña con este dispositivo.
Varning! 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 förkommer i denna publikation i dokumentet Regulatory Compliance and Safety Information (Efterrättelse av föreskrifter och säkerhetsinformation), vilket medföljer denna anordning.
| Warning Read the installation instructions before you connect the system to its power source. |
| Warning Only trained and qualified personnel should be allowed to install or replace this equipment. |
| Warning Before working on a chassis or working near power supplies, unplug the power cord on AC units; disconnect the power at the circuit breaker on DC units. |
| Warning Ultimate disposal of this product should be handled according to all national laws and regulations. |
| Warning The ISDN connection is regarded as a source of voltage that should be inaccessible to user contact. Do not attempt to tamper with or open any public telephone operator (PTO)-provided equipment or connection hardware. Any hardwired connection (other than by a nonremovable, connect-one-time-only plug) must be made only by PTO staff or suitably trained engineers. |
| 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. |
| Warning To avoid electric shock, do not connect safety extra-low voltage (SELV) circuits to telephone-network voltage (TNV) circuits. LAN ports contain SELV circuits, and WAN ports contain TNV circuits. Both LAN and WAN ports may use RJ-45 connectors. Use caution when connecting cables. |
| Warning Hazardous network voltages are present in WAN ports regardless of whether power to the router is OFF or ON. To avoid electric shock, use caution when working near WAN ports. When detaching cables, detach the end away from the router first. |
| Warning Before opening the chassis, disconnect the telephone-network cables to avoid contact with telephone-network voltages. |
| Warning Do not work on the system or connect or disconnect cables during periods of lightning activity. |
| Warning Do not touch the power supply when the power cord is connected. For systems with a power switch, line voltages are present within the power supply even when the power switch is OFF and the power cord is connected. For systems without a power switch, line voltages are present within the power supply when the power cord is connected. |
Follow these guidelines when working on equipment powered by electricity:
Electrostatic discharge (ESD) can damage equipment and impair electrical circuitry. ESD can occur when printed circuit cards are improperly handled and can result in complete or intermittent failures. Always follow ESD prevention procedures when removing and replacing cards. Ensure that the router chassis is electrically connected to earth ground. Wear an ESD-preventive wrist strap, ensuring that it makes good skin contact. Connect the clip to an unpainted surface of the chassis frame to safely channel unwanted ESD voltages to ground. To guard against ESD damage and shocks, the wrist strap and cord must be used properly. If no wrist strap is available, ground yourself by touching the metal part of the chassis.
 | Caution For safety, periodically check the resistance value of the antistatic strap, which should be between 1 and 10 megohms (Mohm). |
You need the following tools and equipment to remove and install the fan cage assembly in a Cisco 3660 router:
The fan cage in the Cisco 3660 router is part of the bezel/fan cage assembly. In order to replace the fan cage, first remove the bezel/fan cage assembly, and then separate the fan cage from the bezel.
Use the following procedure to remove the bezel/fan cage assembly:
Step 1 Facing the front of the router, locate the two screw covers on the bezel's right edge.
(See part 1 in Figure 1.)
Step 2 Using the Phillips screwdriver, loosen the two captive screws. (See part 2 in Figure 1.)
Step 3 Swing out the bezel/fan cage assembly (to approximately 85 degrees), and lift it slightly to disengage it from the chassis tab slots. (See parts 1 and 2 in Figure 2.)
 | Caution Do not swing the bezel/fan cage assembly further than 90 degrees out from the chassis. Doing so will bend the tabs and prevent correct installation of the bezel/fan cage assembly. |
Step 4 Separate the bezel/fan cage assembly from the chassis. (See part 3 in Figure 2.)
| Caution Do not operate the router for an extended length of time with the fan cage removed. The resulting out-of-range operating temperatures could affect router operation. |
Step 1 Close the bezel screw covers. (See Figure 1.)
Step 2 Place the bezel/fan cage assembly (bezel side down) on a flat surface.
Step 3 Using the Torx screwdriver, remove the Torx screw securing the bezel to the fan cage. (See part 1 in Figure 3.)
Save this screw. It will be used to assemble the bezel and replacement fan cage.
Step 4 Slide the fan cage in the direction of its tabbed edge, and lift it away from the bezel. (See part 2 in Figure 3.)
Step 1 Place the bezel (face down) on a flat surface.
Step 2 Position the fan cage (fan side up) on the bezel. (See Figure 3.)
Step 3 Make sure that the fan cage lays flat on the bezel; the tabbed edge of the fan cage will extend slightly beyond the bezel's edge.
Step 4 Slide the fan cage away from the tabbed edge so that all sides are aligned. (See part 2 in Figure 3.)
Step 5 Replace the Torx screw securing the bezel to the fan cage. (See part 1 in Figure 3.)
The Torx screw was removed earlier in Step 3 of the "Separating the Bezel from the Fan Cage" section.
Step 1 Facing the front of the router, align the tabbed edge of the bezel/fan cage assembly with the chassis tab slots (see 3 in Figure 2), and push down slightly to engage the tabs
(see 2 in Figure 2).
Step 2 Swing the bezel/fan cage assembly into the chassis. (See 1 in Figure 2.)
Step 3 Locate the two screw covers on the bezel's right edge. (See 1 in Figure 1.)
Step 4 Using the Phillips screwdriver, tighten the two captive screws and close the screw covers. (See 2 in Figure 1.)
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Posted: Thu Jul 29 08:27:46 PDT 1999
Copyright 1989-1999©Cisco Systems Inc.
