Cisco 2821 Series Installation And Upgrades
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Cisco 2821 Series Installation And Upgrades

Cisco systems routers installing and upgrading fans
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See also: Operation , User Manual
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
Guidelines" section on page
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
•
Americas Headquarters:
Cisco Systems, Inc., 170 West Tasman Drive, San Jose, CA 95134-1706 USA
© 2008 Cisco Systems, Inc. All rights reserved.
"Obtaining Documentation, Obtaining Support, and Security
20.
20.

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Summary of Contents for Cisco 2821 Series

  • Page 1 Upgrading the Cisco 2821 and Cisco 2851 Fan Unit, page 11 • Obtaining Documentation, Obtaining Support, and Security Guidelines, page • Americas Headquarters: Cisco Systems, Inc., 170 West Tasman Drive, San Jose, CA 95134-1706 USA © 2008 Cisco Systems, Inc. All rights reserved. “Obtaining Documentation, Obtaining Support, and Security...

  • Page 2: Safety Warnings And Guidelines

    Safety Warnings and Guidelines Safety Warnings and Guidelines This section provides the safety warnings and guidelines for working with the Cisco 2821 and Cisco 2851 series routers. It contains the following sections: Safety Warnings, page 2 • Safety Guidelines, page 9 •...
  • Page 3 Safety Warnings and Guidelines Statement 1071—Warning Definition IMPORTANT SAFETY INSTRUCTIONS 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.
  • Page 4 Safety Warnings and Guidelines Avvertenza IMPORTANTI ISTRUZIONI SULLA SICUREZZA Questo simbolo di avvertenza indica un pericolo. La situazione potrebbe causare infortuni alle persone. Prima di intervenire su qualsiasi apparecchiatura, occorre essere al corrente dei pericoli relativi ai circuiti elettrici e conoscere le procedure standard per la prevenzione di incidenti. Utilizzare il numero di istruzione presente alla fine di ciascuna avvertenza per individuare le traduzioni delle avvertenze riportate in questo documento.
  • Page 5 Safety Warnings and Guidelines Installing and Upgrading Fans in the Cisco 2821 and Cisco 2851 Series Routers 78-18643-02...
  • Page 6 Safety Warnings and Guidelines Aviso INSTRUÇÕES IMPORTANTES DE SEGURANÇA Este símbolo de aviso significa perigo. Você se encontra em uma situação em que há risco de lesões corporais. Antes de trabalhar com qualquer equipamento, esteja ciente dos riscos que envolvem os circuitos elétricos e familiarize-se com as práticas padrão de prevenção de acidentes.
  • Page 7 Safety Warnings and Guidelines Installing and Upgrading Fans in the Cisco 2821 and Cisco 2851 Series Routers 78-18643-02...
  • Page 8 Safety Warnings and Guidelines 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.

  • Page 9: Safety Guidelines

    Before working on equipment that is connected to power lines, remove jewelry (including rings, Warning 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. Statement 43 Do not touch the power supply when the power cord is connected.

  • Page 10: Preventing Electrostatic Discharge Damage

    Items in the Fan Replacement Kit If an electrical accident occurs, proceed as follows: • Use caution, and do not become a victim yourself. – Turn off power to the system. – If possible, send another person to get medical aid. Otherwise, determine the condition of the –...
  • Page 11 Location of the Cisco 2821 and Cisco 2851 Router Fans Figure 1 shows the location of the fan unit in the Cisco 2821 and Cisco 2851 routers. The router contains three fans, which are connected together as one unit. Figure 1 Location of the fan unit 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.

  • Page 12: Removing The Router Cover

    Upgrading the Cisco 2821 and Cisco 2851 Fan Unit Removing the Router Cover To access the Cisco 2821 or Cisco 2851 fan unit, you must first remove the bezel and then remove the router cover. The bezel is the front plastic panel on the chassis, which has the Cisco logo, LEDs, ports, and input power connection.
  • Page 13 Grasp the bezel at the upward-facing arrow located at the top and center of the front bezel. (See Figure Figure 2 Location of the Arrow on the Bezel AUX/ Location of the arrow 78-18643-02 COMPACT FLASH Do Not Remove During Network Operation AUX/ Do Not Remove During Network Operation OPTIONAL RPS INPUT...
  • Page 14 Upgrading the Cisco 2821 and Cisco 2851 Fan Unit Pull the top of the bezel 1/8 to 1/4 inch (3 to 8 mm) away from the chassis. (See number 1 in Figure Figure 3 Removing the Bezel Pull top of bezel away from chassis 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 Installing and Upgrading Fans in the Cisco 2821 and Cisco 2851 Series Routers...
  • Page 15 Remove the router cover. Follow these steps: Step 5 Use a number 2 Phillips screwdriver to remove the three screws at the back of the top cover. Set the screws aside in a safe place. Lift the cover up at a 45-degree angle, as shown in Figure 4 Removing the Cover from a Cisco 2821 or Cisco 2851 Router Lift cover...

  • Page 16: Removing The Fan Unit

    Upgrading the Cisco 2821 and Cisco 2851 Fan Unit Removing the Fan Unit After you remove the router cover, follow these steps to remove the fan unit. Before you begin, read the safety warnings as described in the “Safety Warnings and Guidelines” section Note on page Locate the three fan connectors on the motherboard and remove them by lifting the connector away from...
  • Page 17 Remove the three screws that hold the fan unit to the side of the chassis. (See number 1 in Step 2 Figure 6 Fan mounting screws on the side of the chassis Remove the one screw that holds the fan unit to the front of the chassis. (See number 2 in Step 3 Lift the fan unit out of the chassis.

  • Page 18: Installing The Fan Unit

    Upgrading the Cisco 2821 and Cisco 2851 Fan Unit Installing the Fan Unit Follow these steps to install the fan unit. Before you begin, read the safety warnings as described in the Note on page Lower the fan unit down and onto the chassis floor. Step 1 Attach fan 1 to the J9 connector on the motherboard.
  • Page 19 Replacing the Router Cover Before you begin, read the safety warnings as described in the Note on page To replace the chassis cover on a Cisco 2821 or Cisco 2851 router, follow these steps. You need a number 2 Phillips screwdriver. Place the chassis on a flat surface.

  • Page 20: Obtaining Documentation, Obtaining Support, And Security Guidelines

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