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Americas Headquarters:

© 2008 Cisco Systems, Inc. All rights reserved.

Cisco Systems, Inc., 170 West Tasman Drive, San Jose, CA 95134-1706 USA

Installing and Upgrading Fans in the Cisco 2821 
and Cisco 2851 Series Routers

This document describes how to install or upgrade fans inside your Cisco 2821 and Cisco 2851 series 
routers. 

This document is intended for the fan installer who is familiar with electronic circuitry and wiring 
practices and has experience as an electronic or electromechanical technician. 

Note

Use this document in conjunction with the following documents: 

•

Cisco 2800 Series Hardware Installation

 guide:

http://www.cisco.com/en/US/docs/routers/access/2800/hardware/installation/guide/hw.html

•

Cisco 2800 Series and Cisco 3800 Series Integrated Services Routers Regulatory Compliance and 
Safety Information

 document:

http://www.cisco.com/en/US/docs/routers/access/2800/hardware/rcsi/2838rcsi.html

If you have questions or need help, see the 

“Obtaining Documentation, Obtaining Support, and Security 

Guidelines” section on page 20

. 

This document contains the following sections:

•

Safety Warnings and Guidelines, page 2

•

Items in the Fan Replacement Kit, page 10

•

Required Tools and Equipment, page 10

•

Location of the Cisco 2821 and Cisco 2851 Router Fans, page 11

•

Upgrading the Cisco 2821 and Cisco 2851 Fan Unit, page 11

•

Obtaining Documentation, Obtaining Support, and Security Guidelines, page 20

.

Содержание 2821 Series

Страница 1: ...re Installation guide http www cisco com en US docs routers access 2800 hardware installation guide hw html Cisco 2800 Series and Cisco 3800 Series Integrated Services Routers Regulatory Compliance and Safety Information document http www cisco com en US docs routers access 2800 hardware rcsi 2838rcsi html If you have questions or need help see the Obtaining Documentation Obtaining Support and Sec...

Страница 2: ...isco 2851 series routers It contains the following sections Safety Warnings page 2 Safety Guidelines page 9 Safety with Electricity page 9 Preventing Electrostatic Discharge Damage page 10 Safety Warnings Note Use this section in conjunction with the Cisco 2800 Series and Cisco 3800 Series Integrated Services Routers Regulatory Compliance and Safety Information document http www cisco com en US do...

Страница 3: ...sia vammoja Ennen kuin käsittelet laitteistoa huomioi sähköpiirien käsittelemiseen liittyvät riskit ja tutustu onnettomuuksien yleisiin ehkäisytapoihin Turvallisuusvaroitusten käännökset löytyvät laitteen mukana toimitettujen käännettyjen turvallisuusvaroitusten joukosta varoitusten lopussa näkyvien lausuntonumeroiden avulla SÄILYTÄ NÄMÄ OHJEET Attention IMPORTANTES INFORMATIONS DE SÉCURITÉ Ce sym...

Страница 4: ... Você está em uma situação que poderá ser causadora de lesões corporais Antes de iniciar a utilização de qualquer equipamento tenha conhecimento dos perigos envolvidos no manuseio de circuitos elétricos e familiarize se com as práticas habituais de prevenção de acidentes Utilize o número da instrução fornecido ao final de cada aviso para localizar sua tradução nos avisos de segurança traduzidos qu...

Страница 5: ...5 Installing and Upgrading Fans in the Cisco 2821 and Cisco 2851 Series Routers 78 18643 02 Safety Warnings and Guidelines ...

Страница 6: ... Use o número da declaração fornecido ao final de cada aviso para localizar sua tradução nos avisos de segurança traduzidos que acompanham o dispositivo GUARDE ESTAS INSTRUÇÕES Advarsel VIGTIGE SIKKERHEDSANVISNINGER Dette advarselssymbol betyder fare Du befinder dig i en situation med risiko for legemesbeskadigelse Før du begynder arbejde på udstyr skal du være opmærksom på de involverede risici d...

Страница 7: ...7 Installing and Upgrading Fans in the Cisco 2821 and Cisco 2851 Series Routers 78 18643 02 Safety Warnings and Guidelines ...

Страница 8: ...activity Statement 1001 Warning Before opening the chassis disconnect the telephone network cables to avoid contact with telephone network voltages Statement 1041 Warning Network hazardous voltages are present in the BRI cable If you detach the BRI cable detach the end away from the router first to avoid possible electric shock Network hazardous voltages also are present on the system card in the ...

Страница 9: ...over in a safe place Keep tools away from walk areas where you or others could fall over them Do not wear loose clothing that may get caught in the chassis Fasten your tie or scarf and roll up your sleeves Wear safety glasses when working under conditions that may be hazardous to your eyes Do not perform any action that creates a potential hazard to people or makes the equipment unsafe Safety with...

Страница 10: ...t the clip to an unpainted surface of the chassis frame to safely channel unwanted ESD voltages to ground To properly guard against ESD damage and shocks the wrist strap and cord must operate effectively 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 ...

Страница 11: ...nnected together as one unit Figure 1 Fan Unit Location in the Cisco 2821 and Cisco 2851 Routers Upgrading the Cisco 2821 and Cisco 2851 Fan Unit The fan unit and cabling for the Cisco 2821 and Cisco 2851 routers are contained inside the chassis Note The fan unit upgrade procedure will take approximately one hour To upgrade the fan unit complete these procedures Removing the Router Cover page 12 R...

Страница 12: ...tch 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 Statement 4 If your router uses DC power observe the following warning Warning Before performing any of the following procedures ensure that power is removed from the DC circuit Statement 1003 Step 1 Power down the router and disconnect th...

Страница 13: ...g arrow located at the top and center of the front bezel See Figure 2 Figure 2 Location of the Arrow on the Bezel 1 Location of the arrow 121069 Do Not Remove During Network Operation COMPACT FLASH 0 1 OPTIONAL RPS INPUT SYS PWR AUX PWR SYS ACT CF 12V 18A 48V 8A CONSOLE AUX 100 240V 8A 50 60 Hz Do Not Remove During Network Operation COMPACT FLASH SYS PWR AUX PWR SYS ACT CF 0 1 1 ...

Страница 14: ...8 to 1 4 inch 3 to 8 mm away from the chassis See number 1 in Figure 3 Figure 3 Removing the Bezel c While holding the bezel away from the chassis slide it toward the left side input power side until it comes off the chassis as shown in Figure 3 See number 2 in Figure 3 1 Pull top of bezel away from chassis 2 Slide bezel to release it from chassis 117350 Plastic bezel 1 2 ...

Страница 15: ...ee screws at the back of the top cover Set the screws aside in a safe place b Lift the cover up at a 45 degree angle as shown in Figure 4 Figure 4 Removing the Cover from a Cisco 2821 or Cisco 2851 Router c Slide the cover to the side toward the side with the fans until the tabs are free from the slots as shown in Figure 4 d Lift the cover away from the router chassis and set the cover aside 1 Lif...

Страница 16: ...ve the router cover follow these steps to remove the fan unit Note Before you begin read the safety warnings as described in the Safety Warnings and Guidelines section on page 2 Step 1 Locate the three fan connectors on the motherboard and remove them by lifting the connector away from the receptacle as shown in Figure 5 Figure 5 Lifting the Connector from the Receptacle 280476 ...

Страница 17: ...old the fan unit to the side of the chassis See number 1 in Figure 6 Figure 6 Removing Fan Mounting Screws from the Chassis Step 3 Remove the one screw that holds the fan unit to the front of the chassis See number 2 in Figure 6 Step 4 Lift the fan unit out of the chassis 1 Fan mounting screws on the side of the chassis 2 Fan mounting screw on the front of the chassis 280571 1 2 ...

Страница 18: ...onnector on the motherboard See number 3 and 4 in Figure 7 Step 4 Attach fan 3 to the J7 connector on the motherboard See number 5 and 6 in Figure 7 Caution The connectors are polarized keyed to allow easy insertion in one orientation only Orient the fan connectors correctly before you insert them Incorrect orientation can damage the connector pins Figure 7 Attaching Fan Cable to the J Connectors ...

Страница 19: ...nes section on page 2 To replace the chassis cover on a Cisco 2821 or Cisco 2851 router follow these steps You need a number 2 Phillips screwdriver Step 1 Place the chassis on a flat surface Step 2 Hold the cover at a 45 degree angle and insert the tabs into the slots along the front bezel edge of the chassis as shown in Figure 8 Figure 8 Installing the Cover on the Cisco 2821 or Cisco 2851 Router...

Страница 20: ...iumVision the Cisco logo DCE and Welcome to the Human Network are trademarks Changing the Way We Work Live Play and Learn is a service mark and Access Registrar Aironet AsyncOS Bringing the Meeting To You Catalyst CCDA CCDP CCIE CCIP CCNA CCNP CCSP CCVP Cisco the Cisco Certified Internetwork Expert logo Cisco IOS Cisco Press Cisco Systems Cisco Systems Capital the Cisco Systems logo Cisco Unity Co...

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