Table Of Contents
Cisco 12404 Router Fan Tray Assembly Replacement Instructions
Product Numbers: GSR04-BLOWER=, 12000/4-BLOWER=
This publication contains removal and replacement procedures for the fan tray assembly (also referred to as a blower module) used with the Cisco 12004 router.
Prerequisites and Preparation
Before you perform any of the procedures in this guide, we recommend:
•Read the safety and ESD-prevention guidelines in this section.
•Ensure that you have all of the necessary tools and equipment before beginning the installation (see the "Installation Guidelines" section).
•Have access to the following documents during the installation:
–Regulatory Compliance and Safety Information for the Cisco 12000 Series Router publication that shipped with the router (78-4347-xx)
–Cisco 12404 Router Installation and Configuration Guide
For additional information about obtaining documentation see the "Obtaining Documentation" section.
Before you perform any procedure in this publication, review the safety guidelines in this section to avoid injuring yourself or damaging the equipment.
Safety warnings appear throughout this publication in procedures that, if performed incorrectly, may harm you. A warning symbol precedes each warning statement. The following warning is an example of a safety warning. It identifies the warning symbol and associates it with a bodily injury hazard.
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 Regulatory Compliance and Safety Information document that accompanied this device.
Preventing Electrostatic Discharge Damage
Many router components can be damaged by static electricity. Not exercising the proper electrostatic discharge (ESD) precautions can result in intermittent or complete component failures. To minimize the potential for ESD damage, always use an ESD-preventive antistatic wrist strap (or ankle strap) and ensure that it makes good skin contact.
Note You should periodically check the resistance value of the ESD-preventive strap. Ensure the measurement is between 1 and 10 megohms.
Before performing the procedures in this guide, attach an ESD-preventive strap to your wrist and connect the leash to the chassis or to another grounded, bare metal surface as shown in Figure 1.
Figure 1 Connecting an ESD-preventive Wrist Strap to the Chassis
The fan tray assembly supports online insertion and removal (OIR), so you can remove and install the fan tray assembly while the system remains powered on without presenting an electrical hazard or damage to the system. This feature lets you replace the fan tray assembly while the system maintains all routing information and ensures session preservation.
Caution Although the fan tray assembly supports OIR and can be replaced without interruption to system operation, do not operate the system without the fan tray assembly for more than a few minutes to prevent overheating.
Tools and Equipment
You need the following tools and this equipment to remove and replace the fan tray assembly:
•3/16-inch flat-blade screwdriver
•Number 1 Phillips screwdriver
Removing and Replacing the Fan Tray Assembly
Use the following procedure to remove and replace the fan tray assembly.
Step 1 Loosen the two captive screws on the fan tray assembly (item 3 in Figure 2).
Figure 2 Cisco 12404 Internet Router Fan Tray Assembly Location
Step 2 Grasp the handle and pull the fan tray assembly out of the fan tray housing (Figure 3).
•Support the bottom of the assembly with your other hand when removing the fan tray.
•Electrical connection for the fans are automatically disconnected when the fan tray is removed from the housing.
Figure 3 Cisco 12404 Router Fan Tray Assembly
Step 3 Hold the fan tray assembly with both hands and insert the connector end of the fan try into the fan tray assembly housing channel.
Note The fan try is designed to install only one way. Excessive force is not necessary when installing the fan tray assembly in the housing channel.
Step 4 Tighten the two captive screws on the fan tray assembly.
Electrical and control line connections for the fan tray assembly are made automatically when the fan tray is properly seated in the fan tray housing.
Troubleshooting the Installation
After the fan tray assembly is connected to a power source, follow these steps to verify that the fan tray assembly is operating properly.
Step 1 Verify that the fans are operating when the connectors are properly mated at the backplane and the captive screws are tightened. If the fans are not operating check that:
•The fan tray assembly is seated properly and is flush against the chassis.
•The captive screws are tightened securely.
Step 2 If the AC or DC power source was disconnected to remove and replace the fan tray assembly, make sure the router is powered on.
Step 3 If the fan tray assembly does not operate after verifying the items in steps 1 and 2, replace the fan tray assembly.
Caution If the replacement fan assembly does not operate, shut down your router and contact a Cisco service representative for assistance.
Regulatory, Compliance, and Safety Information
This section includes regulatory, compliance, and safety information.
Translated Safety Warnings and Agency Approvals
The complete list of translated safety warnings and agency approvals is available in the Regulatory Compliance and Safety Information for Cisco 12000 Series Routers publication (78-4347-xx).
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 you are required to correct the interference at your own expense.
Modifying the equipment without Cisco 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. (That is, make certain the equipment and the television or radio are on circuits controlled by different circuit breakers or fuses.)
This apparatus complies with CISPR 22/EN55022 Class B radiated and conducted emissions requirements.
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.
This apparatus complies with EN55022 Class B and EN55024 standards when used as ITE/TTE equipment, and EN300386 for Telecommunications Network Equipment (TNE) in both installation environments, telecommunication centers and other indoor locations.
VCCI Class A Notice for Japan
Class A Notice for Hungary
Class A Notice for Taiwan and Other Traditional Chinese Markets
This is a Class A Information Product, when used in residential environment, it may cause radio frequency interference, under such circumstances, the user may be requested to take appropriate countermeasures. Statement 257
Class A Notice for Korea
This is a Class A Device and 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. Statement 294
Cisco documentation and additional literature are available on Cisco.com. Cisco also provides several ways to obtain technical assistance and other technical resources. These sections explain how to obtain technical information from Cisco Systems.
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Product Documentation DVD
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The Product Documentation DVD is available as a single unit or as a subscription. Registered Cisco.com users (Cisco direct customers) can order a Product Documentation DVD (product number DOC-DOCDVD=) from the Ordering tool or Cisco Marketplace.
Cisco Ordering tool:
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Cisco supports documentation orders using the ordering tool:
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Cisco Product Security Overview
Cisco provides a free online Security Vulnerability Policy portal at this URL:
From this site, you can perform these tasks:
•Report security vulnerabilities in Cisco products.
•Obtain assistance with security incidents that involve Cisco products.
•Register to receive security information from Cisco.
A current list of security advisories and notices for Cisco products is available at this URL:
If you prefer to see advisories and notices as they are updated in real time, you can access a Product Security Incident Response Team Really Simple Syndication (PSIRT RSS) feed from this URL:
Reporting Security Problems in Cisco Products
Cisco is committed to delivering secure products. We test our products internally before we release them, and we strive to correct all vulnerabilities quickly. If you think that you might have identified a vulnerability in a Cisco product, contact PSIRT:
•Emergencies — email@example.com
An emergency is either a condition in which a system is under active attack or a condition for which a severe and urgent security vulnerability should be reported. All other conditions are considered nonemergencies.
•Nonemergencies — firstname.lastname@example.org
In an emergency, you can also reach PSIRT by telephone:
•1 877 228-7302
•1 408 525-6532
Tip Use Pretty Good Privacy (PGP) or a compatible product to encrypt sensitive information that you send to Cisco. PSIRT can work from encrypted information that is compatible with PGP Versions 2.x through 8.x.
Never use a revoked or an expired encryption key. The correct public key to use in your correspondence with PSIRT is the one linked in the Contact Summary section of the Security Vulnerability Policy page at this URL:
The link on this page has the current PGP key ID in use.
Obtaining Technical Assistance
Cisco Technical Support provides 24-hour-a-day award-winning technical assistance. The Cisco Technical Support & Documentation website on Cisco.com features extensive online support resources. In addition, if you have a valid Cisco service contract, Cisco Technical Assistance Center (TAC) engineers provide telephone support. If you do not have a valid Cisco service contract, contact your reseller.
Cisco Technical Support and Documentation Website
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Access to all tools on the Cisco Technical Support & Documentation website requires a Cisco.com user ID and password. If you have a valid service contract but do not have a user ID or password, you can register at this URL:
Note Use the Cisco Product Identification (CPI) tool to locate your product serial number before submitting a web or phone request for service. You can access the CPI tool from the Cisco Technical Support & Documentation website by clicking the Tools & Resources link under Documentation & Tools. Choose Cisco Product Identification Tool from the Alphabetical Index drop-down list, or click the Cisco Product Identification Tool link under Alerts & RMAs. The CPI tool offers three search options: by product ID or model name; by tree view; or for certain products, by copying and pasting show command output. Search results show an illustration of your product with the serial number label location highlighted. Locate the serial number label on your product and record the information before placing a service call.
Submitting a Service Request
Using the online TAC Service Request Tool is the fastest way to open S3 and S4 service requests. (S3 and S4 service requests are those in which your network is minimally impaired or for which you require product information.) After you describe your situation, the TAC Service Request Tool provides recommended solutions. If your issue is not resolved using the recommended resources, your service request is assigned to a Cisco engineer. The TAC Service Request Tool is located at this URL:
For S1 or S2 service requests or if you do not have Internet access, contact the Cisco TAC by telephone. (S1 or S2 service requests are those in which your production network is down or severely degraded.) Cisco engineers are assigned immediately to S1 and S2 service requests to help keep your business operations running smoothly.
To open a service request by telephone, use one of the following numbers:
Asia-Pacific: +61 2 8446 7411 (Australia: 1 800 805 227)
EMEA: +32 2 704 55 55
USA: 1 800 553-2447
For a complete list of Cisco TAC contacts, go to this URL:
Definitions of Service Request Severity
To ensure that all service requests are reported in a standard format, Cisco has established severity definitions.
Severity 1 (S1)—Your network is "down," or there is a critical impact to your business operations. You and Cisco will commit all necessary resources around the clock to resolve the situation.
Severity 2 (S2)—Operation of an existing network is severely degraded, or significant aspects of your business operation are negatively affected by inadequate performance of Cisco products. You and Cisco will commit full-time resources during normal business hours to resolve the situation.
Severity 3 (S3)—Operational performance of your network is impaired, but most business operations remain functional. You and Cisco will commit resources during normal business hours to restore service to satisfactory levels.
Severity 4 (S4)—You require information or assistance with Cisco product capabilities, installation, or configuration. There is little or no effect on your business operations.
Obtaining Additional Publications and Information
Information about Cisco products, technologies, and network solutions is available from various online and printed sources.
•Cisco Marketplace provides a variety of Cisco books, reference guides, documentation, and logo merchandise. Visit Cisco Marketplace, the company store, at this URL:
•Cisco Press publishes a wide range of general networking, training and certification titles. Both new and experienced users will benefit from these publications. For current Cisco Press titles and other information, go to Cisco Press at this URL:
•Packet magazine is the Cisco Systems technical user magazine for maximizing Internet and networking investments. Each quarter, Packet delivers coverage of the latest industry trends, technology breakthroughs, and Cisco products and solutions, as well as network deployment and troubleshooting tips, configuration examples, customer case studies, certification and training information, and links to scores of in-depth online resources. You can access Packet magazine at this URL:
•iQ Magazine is the quarterly publication from Cisco Systems designed to help growing companies learn how they can use technology to increase revenue, streamline their business, and expand services. The publication identifies the challenges facing these companies and the technologies to help solve them, using real-world case studies and business strategies to help readers make sound technology investment decisions. You can access iQ Magazine at this URL:
or view the digital edition at this URL:
•Internet Protocol Journal is a quarterly journal published by Cisco Systems for engineering professionals involved in designing, developing, and operating public and private internets and intranets. You can access the Internet Protocol Journal at this URL:
•Networking products offered by Cisco Systems, as well as customer support services, can be obtained at this URL:
•Networking Professionals Connection is an interactive website for networking professionals to share questions, suggestions, and information about networking products and technologies with Cisco experts and other networking professionals. Join a discussion at this URL:
•World-class networking training is available from Cisco. You can view current offerings at this URL:
This document is to be used in conjunction with the Cisco 12404 Internet Router Installation and Configuration Guide, Part Number DOC-7813511=.
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