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Cisco 2821 Series - page 1
Americas Headquarters: © 20 08 Cisco Syst ems, 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 ho w to i nstall or upgrade fans inside y our Cisco 2821 and Cisco 2851 series routers. This document ...
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Cisco 2821 Series - page 2
2 Installing and Upgradin g Fans in the Cisco 2821 and Cisco 2851 Series Routers 78-18643-02 Safety Warnings and Guidelines Safety Warnings and Guidelines This section pro vides the safety warnings and guidel ines for working with the Cisco 2821 and Ci sco 2851 series rout ers. It contains the follo wing sections: • Safety W arnings, page 2 • S ...
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Cisco 2821 Series - page 3
3 Installing and Upgrading Fans in the Cisco 2821 and Cisco 2851 Series Routers 78-18643-02 Safety War nin gs and Gu idelines Statement 1071—Warning Definition War ni ng IMPORT ANT SAFETY INSTRUCTIONS This warning symbol means danger . Y ou are in a situation that could cause bodily injury . Before you work on any equipment, be aware of the hazar ...
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Cisco 2821 Series - page 4
4 Installing and Upgradin g Fans in the Cisco 2821 and Cisco 2851 Series Routers 78-18643-02 Safety Warnings and Guidelines Avvertenza IMPORT ANTI ISTRUZIONI SULLA SICUREZZA Questo simbolo di avvertenza indica un pericolo. La situazione potrebbe causare infortuni alle persone. Prima di intervenire su qua lsiasi apparecchiatura, occorre essere al co ...
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Cisco 2821 Series - page 5
5 Installing and Upgrading Fans in the Cisco 2821 and Cisco 2851 Series Routers 78-18643-02 Safety War nin gs and Gu idelines ...
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Cisco 2821 Series - page 6
6 Installing and Upgradin g Fans in the Cisco 2821 and Cisco 2851 Series Routers 78-18643-02 Safety Warnings and Guidelines Avis o INSTRUÇÕES IMPORT ANTES DE SEGURANÇA Este símbolo de aviso significa perigo. V ocê se encontra em uma situação em que há risco de lesões corporais. Antes de trabalhar com qualquer equipam ento, esteja ciente do ...
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Cisco 2821 Series - page 7
7 Installing and Upgrading Fans in the Cisco 2821 and Cisco 2851 Series Routers 78-18643-02 Safety War nin gs and Gu idelines ...
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Cisco 2821 Series - page 8
8 Installing and Upgradin g Fans in the Cisco 2821 and Cisco 2851 Series Routers 78-18643-02 Safety Warnings and Guidelines War ni ng Do not touch the power supply wh en the power cord is connected. For sy stems with a power switch, line voltages are present within the power sup ply even when the power switch is off and the power cord is connected. ...
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Cisco 2821 Series - page 9
9 Installing and Upgrading Fans in the Cisco 2821 and Cisco 2851 Series Routers 78-18643-02 Safety War nin gs and Gu idelines War ni ng Before working on equipme nt that is connected to pow er lines, remove jewelry (including rings, necklaces, and watches). Met a l objects will heat up when connected to power and ground and ca n cause serious burns ...
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Cisco 2821 Series - page 10
10 Installing and Upgradin g Fans in the Cisco 2821 and Cisco 2851 Series Routers 78-18643-02 Items in the Fa n Replacement Kit • If an electrical accident oc curs, proceed as follows: – Use caution, and do not become a victim yourself. – T urn off po wer to the system. – If possible, send another person to get medical aid. Otherwise, deter ...
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Cisco 2821 Series - page 11
11 Installing and Upgrading Fans in the Cisco 2821 and Cisco 2851 Series Routers 78-18643-02 Location of the Cisco 2821 and Cisco 2851 Router Fans Location of the Cisco 2821 and Cisco 2851 Router Fans Figure 1 sho ws the location of the fa n unit in the Cisco 2821 and Ci sco 2851 routers. The router contains three fans, which are connected together ...
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Cisco 2821 Series - page 12
12 Installing and Upgradin g Fans in the Cisco 2821 and Cisco 2851 Series Routers 78-18643-02 Upgrading the Cisco 2821 and Cisco 2851 Fan Unit Removing the Router Cover T o access the Cisco 2821 or C isco 2851 fan unit, you must f irst remove the b ezel and then remov e the router cov er . The bezel is the front plastic panel on the chassis, which ...
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Cisco 2821 Series - page 13
13 Installing and Upgrading Fans in the Cisco 2821 and Cisco 2851 Series Routers 78-18643-02 Upgrading the Cisco 2821 and Cisco 2851 Fan Unit a. Grasp the bezel at the upward-facing arro w located at the top and center of the front bezel. (See Figure 2 .) Figur e 2 Location of the Ar ro w on the Bezel . 1 Location of the arrow 121069 Do Not Remove ...
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Cisco 2821 Series - page 14
14 Installing and Upgradin g Fans in the Cisco 2821 and Cisco 2851 Series Routers 78-18643-02 Upgrading the Cisco 2821 and Cisco 2851 Fan Unit b. Pull the top of the bezel 1/ 8 to 1/4 inch (3 to 8 mm) aw ay from the chassis. (See number 1 in Figure 3 .) Figure 3 Remo ving the Bez e l . c. While holding the bezel a way from the chassis, slide it to ...
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Cisco 2821 Series - page 15
15 Installing and Upgrading Fans in the Cisco 2821 and Cisco 2851 Series Routers 78-18643-02 Upgrading the Cisco 2821 and Cisco 2851 Fan Unit Step 5 Remov e the router co ver . F ollow these steps: a. Use a number 2 Phillips scre wdriv er to remove the th ree scre ws at the back of the top cov e r . Se t the screws aside in a safe place. b. Lift th ...
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Cisco 2821 Series - page 16
16 Installing and Upgradin g Fans in the Cisco 2821 and Cisco 2851 Series Routers 78-18643-02 Upgrading the Cisco 2821 and Cisco 2851 Fan Unit Removing the Fan Unit After you remov e the router cover , follo w these steps to remove th e fan unit. Note Before you begin , read the safety warnings as described in the “Safety W arnings and Gu ideline ...
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Cisco 2821 Series - page 17
17 Installing and Upgrading Fans in the Cisco 2821 and Cisco 2851 Series Routers 78-18643-02 Upgrading the Cisco 2821 and Cisco 2851 Fan Unit Step 2 Remov e the three screws that hol d the fan unit to the side of the chassis. (See number 1 in Figure 6 .) Figur e 6 Removing F an Moun ting Scr ews from th e Chassis Step 3 Remov e the one scre w that ...
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Cisco 2821 Series - page 18
18 Installing and Upgradin g Fans in the Cisco 2821 and Cisco 2851 Series Routers 78-18643-02 Upgrading the Cisco 2821 and Cisco 2851 Fan Unit Installing the Fan Unit Follo w these steps to install t h e fan uni t. Note Before you begin , read the safety warnings as described in the “Safety W arnings and Gu idelines” secti on on page 2 . Step 1 ...
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Cisco 2821 Series - page 19
19 Installing and Upgrading Fans in the Cisco 2821 and Cisco 2851 Series Routers 78-18643-02 Upgrading the Cisco 2821 and Cisco 2851 Fan Unit Replacing the Router Cover Note Before you begin , read the safety warnings as described in the “Safety W arnings and Guidelines” section on page 2 . T o replace the chassis cov er on a Cisco 2821 or Cisc ...
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Cisco 2821 Series - page 20
20 Installing and Upgradin g Fans in the Cisco 2821 and Cisco 2851 Series Routers 78-18643-02 Obtaining Documentati on, Obtaining Support, and Secur ity Guidelines Step 3 Center the cover o ver the chassis and lo wer it onto th e chassis, as shown i n Figure 8 . Step 4 Reinstall the three cover scre ws. Caution When replacing the co ver , do not pi ...
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