280-Watt DC-Input Power Supply Replacement Instructions

This document explains how to remove and replace the 24V or 48V 280-Watt (W) DC-input power supply in the Cisco 7200 series routers—which consist of the two-slot Cisco 7202, four-slot Cisco 7204 and Cisco 7204VXR, and the six-slot Cisco 7206 and Cisco 7206VXR. It includes instructions for powering down the router, removing an installed power supply, and installing a new power supply. This document also includes steps for verifying the initialization of the system after you power up the router.

Note The Cisco 7206VXR and Cisco 7206 can be used as router shelves in a Cisco AS5800 Universal Access Server. References to the Cisco 7200 series routers in this document include the Cisco 7206VXR and Cisco 7206 as router shelves in a Cisco AS5800 Universal Access Server, unless indicated otherwise.

The following sections are included in this document:

DC-Input Power Supply Overview

The Cisco 7200 series routers are equipped with a single DC-input power supply (when DC-input power is specified). An optional, second DC-input power supply is available for the router; it must be ordered as a spare. The router operates with one installed power supply; however, the second power supply provides hot-swappable, load-sharing redundant power.

Two 280W DC-input power supplies are available:

A 48V power supply (PWR-7200-DC=)

This power supply operates from 48V to 60V.

A 24V power supply (PWR-7200-DC+, PWR-7200-DC+= PWR-7200/2-DC+)

This power supply operates from 24V to 60V.

The faceplates of both 280W DC-input power supplies have a green OK LED, a power switch, a handle for removing, installing, and handling the power supply, three DC-input lead receptacles, and two captive installation screws. (See Figure 1.)

Figure 1 Cisco 7200 Series DC-Input Power Supply Faceplate

The power supply handle provides a grip point for pulling the power supply out of the router (refer to Figure 1). Two captive installation screws secure the power supply in the router. Three DC-input leads (-, +[return], and ground) connect the DC-input power supply to the site DC power source.

A cable tie is shipped with each DC-input power supply to secure the leads to the power supply faceplate and provide strain relief for the leads.

LEDs

Use the following table for LED status information.

Table 1 LED Status

LED	Color	State	Status of the Power Supply and Internal DC Voltages
OK	Green	On	Continuously on when the power supply is on and is receiving DC source power providing +5V, -12V, +12V, and +3V DC to internal components and all internal DC voltages are within tolerance.
OK	Green	Off	The power supply shuts itself down when the internal DC voltages exceed allowable tolerances or the internal temperature of the DC-input power supply exceeds allowable tolerances. The power supply remains in a shut down state untilit is disconnected and reconnected to the source power, and then restarted with the power switch. The power switch turns the power supply on and starts the system.

LED

Color

State

Status of the Power Supply and Internal DC Voltages

Green

Continuously on when the power supply is on and is receiving DC source power providing +5V, -12V, +12V, and +3V DC to internal components and all internal DC voltages are within tolerance.

Green

Off

The power supply shuts itself down when the internal DC voltages exceed allowable tolerances or the internal temperature of the DC-input power supply exceeds allowable tolerances.

The power supply remains in a shut down state untilit is disconnected and reconnected to the source power, and then restarted with the power switch. The power switch turns the power supply on and starts the system.

Rules for Chassis with Dual Power Supplies

Chassis with dual power supplies, operating in a 24V environment, must use two 24V power supplies. If one 48V power supply is placed in a system requiring a 24V environment, the 48V power supply does not work. It does not cause any damage to the system.
Chassis with dual power supplies, operating in a 48V environment, may use two 48V power supplies, two 24V power supplies, or one of each.

Caution Do not mix AC- and DC-input power supplies in the same router.

Figure 2 24V Power Supply Ratings Label

To distinguish the two power supplie,s look for these characteristics:

The 48V power supply sheet metal finish is shiny.
The 24V power supply sheet metal finish is dull.
The 24V label located on the power supply next to the cable connector reads 24 - 60 V. (See Figure 2.)
The 48V label located on the power supply next to the cable connector reads 48 - 60V.

Software Requirements

The 24V power supply requires one of these four minimum Cisco IOS Releases:

Cisco IOS Release 12.1(7) E or later releases
Cisco IOS Release 12.2(2) T or later releases
Cisco IOS Release 12.2(3) or later releases
Cisco IOS Release 12.0(17) S or later releases.

Power Supply Specifications

Table 2 24V and 48V Power Supply Specifications

Power Supply	Operational Information
24V	The 24V DC-input power supply operates at nominal voltages between 24 volts direct current (VDC) and 60 VDC input voltage and supplies +5V, +12V, -12V, and +3V DC power to the router's internal components through the router midplane.
48V	The 48V DC-input power supply operates at nominal voltages between 48 VDC and 60 VDC input voltage and supplies +5V, +12V, -12V, and +3V DC power to the router's internal components through the router midplane.

Note Site wiring and circuit breakers or fuses should be chosen to meet local safety requirements.

Table 3 Voltage and Current Maximum Values

Nominal Voltage	Current (A)
24 VDC	Minimum 19A service
48 VDC	Minimum 13A service
60 VDC	Minimum 8A service

Note The values in Table 3 are absolute maximum values. Typical system configurations use substantially less. To obtain typical values for your configuration, contact your Cisco sales representative.

This product relies on the building's installation for short-circuit (overcurrent) protection. Ensure that a listed and certified fuse or circuit breaker, 35A maximum 60 VDC, is used on all current-carrying conductors. Site wiring and circuit breakers need to be sized to accommodate the maximum values (noted in the preceding table) for safety reasons.

Installation Prerequisites

This section provides a list of parts and tools you need to remove and replace the DC-input power supply in the Cisco 7200 series routers. This section also includes safety and ESD-prevention guidelines to help you avoid injury to yourself and damage to the equipment. The following releases are the minimum required Cisco IOS releases for the 24V - 60V power supply.

Cisco IOS Release Cisco IOS Release 12.1(7) E or later releases
Cisco IOS Release 12.2(2) T or later releases
Cisco IOS Release 12.2(3) or later releases
Cisco IOS Release 12.0(17) S or later releases.

Tools and Parts Required

You need the following parts and tools to remove and replace the DC-input power supply. If you need additional equipment, contact a service representative for ordering information.

A new DC-input power supply (PWR-7200-DC) or (PWR-7200-DC+, PWR-7200-DC+= PWR-7200/2-DC+) (See Rules for Chassis with Dual Power Supplies if the router has two power supplies.)
Standard wire stripper
Number 2 Phillips and a 3/16-inch, flat-blade screwdriver
Several cable ties (if the router is mounted in an equipment rack)

Note Wiring information—voltage and current maximum values—is provided in Table 3.

Safety Guidelines

Following are safety guidelines that you should follow when working with any equipment that connects to electrical power or telephone wiring.

Safety Warnings

Warning Only trained and qualified personnel should be allowed to install or replace this equipment.

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.

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.

Electrical Equipment Guidelines

Follow these basic guidelines when working with any electrical equipment:

Before beginning any procedures requiring access to the chassis interior, locate the emergency power-off switch for the room in which you are working.
Disconnect all power and external cables before moving a chassis.
Do not work alone when potentially hazardous conditions exist.
Never assume that power has been disconnected from a circuit; always check.
Do not perform any action that creates a potential hazard to people or makes the equipment unsafe; carefully examine your work area for possible hazards such as moist floors, ungrounded power extension cables, and missing safety grounds.
A DC circuit breaker sized to protect the site wiring is recommended for the DC input power source. This circuit breaker should protect against short-circuit and overcurrent faults in accordance with United States National Electrical Code NFPA 70 (United States), Canadian Electrical Code, part I, C22.1 (Canada) and IEC 364 (other countries).
Only a DC power source that complies with the safety extra-low voltage (SELV) requirements in ULL950, CSA 950, EN 60950, and IEC950 can be connected to the DC-input power supply.
A readily accessible disconnect device must be incorporated in the fixed wiring.
This unit is to be installed in a restricted access area in accordance with articles 110-16, 110-17, and 110-18 of the National Electric Code, ANSI/NFPA 70.

Telephone Wiring Guidelines

Use the following guidelines when working with any equipment that is connected to telephone wiring or to other network cabling:

Never install telephone wiring during a lightning storm.
Never install telephone jacks in wet locations unless the jack is specifically designed for wet locations.
Never touch uninsulated telephone wires or terminals unless the telephone line has been disconnected at the network interface.
Use caution when installing or modifying telephone lines.

Ensuring Easy Access to the Router

If your Cisco 7200 series router is installed in a standard 19-inch, four-post or telco rack, cables from other equipment in the rack might obstruct access to the rear of the router. Also, rack power strips or other permanent fixtures may obstruct access to the router. Review the following guidelines to ensure easy access to the rear of the router when it is installed in a rack. If the router is not installed in a rack, or if you already have clear access to the rear of the router, proceed to the following section "Removing and Replacing a DC-Input Power Supply."

Use the following guidelines to ensure easy access to the rear of the router when it is installed in a rack:

Ensure that you have at least three to four feet of working space at the rear of the router.
If cables from other equipment in the rack fall in front of the rear end of the router, carefully gather the cables (using care not to strain them) and use cable ties to anchor them away from the rear of the router.
If access to the rear of the router is partially blocked by a power strip or some other permanent rack fixture, detach the router from the rack and carefully slide it forward until there is enough clearance to remove the power supply, the network processing engine or network services engine, and the subchassis from the router. Detailed steps for detaching the router from the rack are contained in the following section "Removing and Replacing a DC-Input Power Supply."

Caution Make sure that at least one other person is available to support the front of the router as you slide it out from the rack and, if necessary, to continue to support it while you remove and insert the power supply, network processing engine or network services engine, or subchassis.

Removing and Replacing a DC-Input Power Supply

The following sections explain how to remove and replace a DC-input power supply in Cisco 7200 series routers.

Note The procedures for removing and replacing a DC-input power supply in a single or dual power supply configuration are the same for the Cisco 7200 series routers and the Cisco 7206 and Cisco 7206VXR when used as router shelves in the Cisco AS5800 Universal Access Server. Therefore, the illustrations and procedures in the following sections apply to the Cisco 7200 series and the Cisco AS5800 Universal Access Server router shelf unless indicated otherwise.

Single Power Supply Configuration

The procedures for removing and replacing the DC-input power supply in a single power supply configuration are explained in the following sections:

Powering Down the Router and Disconnecting DC-Input Power

To power down Cisco 7200 series routers that have an installed DC-input power supply, complete the following steps:

Note Before powering down the router, use the copy running-config startup-config command to save the router's running configuration to nonvolatile memory.

Warning This unit might have more than one power cord. To reduce the risk of electric shock, disconnect the two power cords before servicing the router.

Step 1 Facing the rear of the router, place the power switch (on the power supply) in the OFF (O) position. (See Figure 3.)

Step 2 Observe the following items:

The green OK LED on the power supply turns off.
The fans stop operating.
The LEDs on the I/O controller turn off.
The LEDs on the port adapters turn off.

Step 3 Turn off the power source and disconnect the DC-input power leads from the power source. You can leave the ground cable connected.

This completes the procedure for powering down Cisco 7200 series routers.

To disconnect DC-input power to the Cisco 7200 series routers, complete the following steps:

Warning Before completing any of the following steps, and to prevent short-circuit or shock hazards, ensure that power is removed from the DC circuit. To ensure that all power is OFF, locate the circuit breaker on the panel board that services the DC circuit, switch the circuit breaker to the OFF position, and tape the switch handle of the circuit breaker in the OFF position.

Warning When installing the unit, the ground connection must always be made first and disconnected last.

Figure 3 Disconnecting Power from a Cisco 7200 Series DC-Input Power Supply

Step 1 At the rear of the router, make sure that the power switch on the power supply is in the off (O) position. (For the Cisco 7200 series routers, see Figure 3.)

Step 2 Ensure that no current is flowing through the DC power supply leads. To ensure that all power is OFF, locate the circuit breaker on the panel board that services the DC circuit, switch the circuit breaker to the OFF position, and tape the switch handle of the circuit breaker in the OFF position.

Step 3 Disconnect the -V and +V and ground leads from the power supply.

Step 4 Remove the cable tie that secures the DC power line input leads and ground leads to the power supply faceplate. Save the cable tie.

Note The cable tie that accompanied your DC-input power supply can be removed and replaced on the power supply without the use of a tool. If you secured the DC-input power supply leads to the power supply faceplate using a different type of cable tie, use the wire stripper to cut that cable tie from the power supply.

Step 5 Using a 3/16-inch flat-blade screwdriver, loosen the screw below the +DC power line input lead receptacle and pull the lead from the connector (see Figure 3). Repeat this step for the -DC power power input lead and the ground lead.

Note The color coding of the DC-input power supply leads depends on the color coding of the DC power source at your site. Typically, green or green/yellow is used for ground. Make certain the lead color coding you choose for the DC-input power supply matches lead color coding used at the DC power source.

This completes the procedure for disconnecting DC-input power. Proceed to the section "Removing the DC-Input Power Supply."

Removing the DC-Input Power Supply

To remove the DC-input power supply from Cisco 7200 series routers, complete the following steps:

Step 1 Using a number 2 Phillips or a 3/16-inch flat-blade screwdriver, loosen the two captive installation screws on the faceplate of the power supply. (See Figure 4.)

If the router is not installed in a standard 19-inch, four-post or telco rack, skip to Step 5. If the router is installed in a rack, determine if any permanent rack fixtures, such as a power strip, are obstructing access to the power supply. If a rack fixture is obstructing access to the power supply, proceed to Step 2.

Figure 4 Captive Installation Screws and Handle on the DC-Input Power Supply

Step 2 Using a 3/16-inch flat-blade screwdriver, loosen the screws that secure the router to the front mounting strips of the rack.

Step 3 Position at least one person in front of the rack to support the front underside of the router.

Step 4 From the rear of the rack, carefully push the front of the router out of the rack until there is enough clearance to remove the power supply.

Step 5 Grasp the power supply handle and pull the DC-input power supply from the router.

Caution To maintain agency compliance requirements and meet EMI emissions standards for the Cisco 7200 series routers with a single power supply, the power supply filler plate must remain in the power supply adjacent to the installed power supply. Do not remove this filler plate from the router unless you intend to install a redundant power supply.

This completes the procedure for removing the DC-input power supply from Cisco 7200 series routers.

Replacing the DC-Input Power Supply

Caution Do not mix AC- and DC-input power supplies in the same router.

To install a new DC-input power supply in a Cisco 7200 series chassis, complete the following steps:

Step 1 Make sure the power switch on the power supply is in the off (O) position.

Step 2 Grasp the power supply handle with one hand and place your other hand underneath the power supply for support (refer to Figure 5).

Figure 5 Holding the DC-Input Power Supply

Step 3 Align the power supply to the power supply bay.

Step 4 Slide the power supply completely into the power supply bay until its faceplate is flush with the router's rear panel.

Caution When inserting a power supply into the router, do not use unnecessary force; slamming the power supply into the bay can damage the connectors on the rear of the supply and on the midplane.

Step 5 Seat the power supply in the router by tightening its captive installation screws with a number 2 Phillips or a 3/16-inch flat-blade screwdriver.

Note The power supply is not fully seated in the router midplane until you tighten its captive installation screws.

Step 6 If there is no second power supply, replace the filler plate on the empty power supply bay. Using a number 2 Phillips screwdriver, tighten the filler plate's captive installation screws.

Step 7 If you pushed the router from the rack, slowly guide the router back into the rack.

Step 8 Use a 3/16-inch flat-blade screwdriver to tighten the screws that secure the router to the front mounting strips of the rack.

This completes the procedures for replacing a DC-input power supply in the router. Proceed to the following section "Reconnecting DC-Input Power and Turning On the Power Supply."

Reconnecting DC-Input Power and Turning On the Power Supply

The following procedures explain how to reconnect DC-input power to Cisco 7200 series routers, power up the router, and verify a successful system boot.

Warning Read the installation instructions before you connect the system to its power source.

Note The color coding of the DC-input power supply leads depends on the color coding of the DC power source at your site. Typically, green or green/yellow is used for ground. Make certain the lead color coding you choose for the DC-input power supply matches lead color coding used at the DC power source.

To reconnect DC-input power to Cisco 7200 series routers, complete the following steps:

Warning When installing the unit, the ground connection must always be made first and disconnected last.

Step 1 To ensure that all power is OFF, locate the circuit breaker on the panel board that services the DC circuit, switch the circuit breaker to the OFF position, and tape the switch handle of the circuit breaker in the OFF position. Ensure that the DC power line input leads are disconnected from the power source.

Step 2 If necessary, use a wire stripper to strip approximately 0.55 inch (14 mm) from the DC power line input and ground leads. (See Figure 6.)

Figure 6 Stripping the DC-Input Leads

Step 3 At the rear of the router, check that the power switch on the power supply is in the off (O) position. (See Figure 7.)

Step 4 Insert the stripped end of the ground lead all the way into the ground lead receptacle on the DC-input power supply and tighten the receptacle screw using a 3/16-inch flat-blade screwdriver. (See Figure 7.)

Figure 7 Connecting DC-Input Power

Step 5 Insert the stripped end of the + DC power line input lead all the way into the + lead receptacle and tighten the receptacle screw using the same 3/16-inch flat-blade screwdriver. Repeat Step 5 for the -DC power line input lead.

Note Make sure the entire stripped end of each lead is inserted all the way into its receptacle. If any exposed wire at the stripped end of a lead is visible after inserting the lead into its receptacle, remove the lead from the receptacle, use the wire stripper to cut the stripped end of the lead, and repeat Step 2 through Step 5.

Step 6 After tightening the receptacle screw for the ground and DC power line input leads, use the cable tie you saved earlier to secure the three leads to the power supply faceplate.

Note When securing the ground and DC power line input leads to the power supply faceplate, leave a small service loop in the ground lead to ensure that it is the last lead to disconnect from the power supply if a great deal of strain is placed on all three leads (refer to Figure 7).

Step 7 Turn the circuit breaker to the ON position to restore power to the DC-input power leads..

Note Each DC-input power supply operating at 24V DC requires a minimum of 19A service.
Each DC-input power supply operating at 48 VDC requires a minimum of 13A service. Each DC-input power supply operating at 60 VDC requires a minimum of 8A service.

The preceding values are absolute maximum values. Typical system configurations use substantially less. To obtain typical values for your configuration, contact your Cisco sales representative.

This product relies on the building's installation for short-circuit (overcurrent) protection. Ensure that a listed and certified fuse or circuit breaker, 35A maximum 60 VDC, is used on all current-carrying conductors. Site wiring and circuit breakers need to be sized to accommodate the maximum values for safety reasons.

This completes the steps for connecting DC-input power to Cisco 7200 series routers.

To power up Cisco 7200 series routers that have an installed DC-input power supply, complete the following steps:

Step 1 Check for the following:

Each port adapter is inserted in its slot, and its respective port adapter lever is in the locked position.
The network processing engine or network services engine and the I/O controller are inserted in their respective slots, and their captive installation screws are tightened.
All network interface cables are connected to the port adapters.
A Flash Disk or Flash memory card is installed in its PCMCIA slot (if present).
Each DC lead is connected and secured to the power supply faceplate with a cable tie.
Each DC lead is connected and secured to the power source.
The tape (that you applied earlier) is removed from the circuit breaker switch handle, and power is restored by moving the circuit breaker handle to the on position.
The console terminal is turned on.

Step 2 At the rear of the router, place the power switch on the power supply in the on (|) position. The green OK LED on the power supply turns on.

Step 3 Listen for the fans; you should immediately hear them operating.

Step 4 During the boot process, observe the system's LEDs. The LEDs on most of the port adapters go on and off in irregular sequence. Some may go on, go out, and go on again for a short time. On the I/O controller, the IO power OK LED comes on immediately.

Step 5 Observe the initialization process. When the system boot is complete (a few seconds), the network processing engine or network services engine begins to initialize the port adapters and the I/O controller. During this initialization, the LEDs on each port adapter behave differently (most flash on and off). The enabled LED on each port adapter goes on when initialization is completed, and the console screen displays a script and system banner similar to the following:

 
Cisco Internetwork Operating System Software 

 
IOS (tm) 7200 Software (C7200-J-M), Version 11.1(10)

 
Copyright (c) 1986-1996 by cisco Systems, Inc.

 
Compiled Sun 21-Apr-96 04:10 by 

This completes the procedure for replacing the DC-input power supply in a single power supply configuration, reconnecting input power, and powering up the router.

Dual Power Supply Configuration

The procedures for removing and replacing the DC-input power supply in a dual power supply configuration are explained in the following sections:

Rules for Chassis with Dual Power Supplies

Before beginning the installation, read the following rules:

Chassis with dual power supplies, operating in a 24V environment, must use two 24V power supplies. If one 48V power supply is placed in a system requiring a 24V environment, the 48V power supply does not work. It does not cause any damage to the system.
Chassis with dual power supplies, operating in a 48V environment may use two 48V power supplies, two 24V power supplies, or one of each.

Caution Do not mix AC- and DC-input power supplies in the same router.

Figure 8 24V Power Supply Ratings Label

To distinguish the two DC power supplies, look for these characteristics:

The 48V power supply sheet metal finish is shiny.
The 24V power supply sheet metal finish is dull.
The 24V label located on the power supply next to the cable connector reads 24 - 60 V. See Figure 8.
The 48V label located on the power supply next to the cable connector reads 48 - 60V.

Turning Off the Power Supply and Disconnecting DC-Input Power

Warning When installing the unit, the ground connection must always be made first and disconnected last.

Caution It is possible to remove and replace one DC power supply while the router remains powered up and running on the other DC power supply if the two DC power supplies are on separate circuit breakers. If they are on the same circuit breaker, both power supplies must be powered off, and the circuit breaker turned to the OFF position before replacing one of the power supplies.

To turn off the DC-input power supply you plan to replace and to disconnect power, complete the following steps:

Step 1 Facing the rear of the router, place the power switch (on the power supply you wish to replace) in the off (O) position. The green OK LED on the power supply you are replacing turns off.

Step 2 To ensure that all power (to the power supply you wish to replace) is off, locate the circuit breaker on the panel board that services the DC circuit, switch the circuit breaker to the OFF position, and tape the switch handle of the circuit breaker in the OFF position.

Note Assuming the two power supplies are on separate power circuits and can have power to one turned off by turning off the circuit breaker, the second power supply maintains full system power (the system continues to operate as normal).

Step 3 Remove the cable tie that secures the DC power line input leads and ground leads to the power supply faceplate. Save the cable tie.

Note The cable tie that accompanied your DC-input power supply can be removed and replaced on the power supply without using a tool. If you secured the DC-input power supply leads to the power supply faceplate using a different type of cable tie, use the wire stripper to cut the cable tie from the power supply.

Step 4 Using a 3/16-inch flat-blade screwdriver, loosen the screw below the +DC input power lead receptacle and pull the lead from the connector (see Figure 3). Repeat this step for the -DC input power lead and the ground lead.

This completes the procedure for disconnecting DC-input power. Proceed to the section "Removing the DC-Input Power Supply."

Removing the DC-Input Power Supply

To remove the DC-input power supply from Cisco 7200 series routers, complete the following steps:

Step 1 Using a number 2 Phillips or a 3/16-inch, flat-blade screwdriver, loosen the two captive installation screws on the faceplate of the power supply (See Figure 4).

If the router is not installed in a standard 19-inch rack or in a telco rack, skip to Step 5. If the router is installed in a rack, determine if any permanent rack fixtures, such as a power strip, are obstructing access to the power supply. If a rack fixture is obstructing access to the power supply, proceed with Step 2.

Step 2 Using a 3/16-inch flat-blade screwdriver, loosen the screws that secure the router to the front mounting strips of the rack.

Step 3 Position at least one person in front of the rack to support the front underside of the router.

Step 4 From the rear of the rack, carefully push the front of the router out of the rack until there is enough clearance to remove the power supply from the router.

Step 5 Grasp the power supply handle and pull the DC-input power supply from the router.

This completes the procedure for removing the DC-input power supply from Cisco 7200 series routers.

Replacing the DC-Input Power Supply

To install a new DC-input power supply in Cisco 7200 series routers, complete the following steps:

Step 1 Make sure the power switch on the power supply is in the off (O) position.

Step 2 Grasp the power supply handle with one hand and place your other hand underneath the power supply for support (refer to Figure 5).

Step 3 Align the power supply to the power supply bay.

Step 4 Slide the power supply completely into the power supply bay until its faceplate is flush with the router's rear panel.

Step 5 Seat the power supply in the router by tightening its captive screws with a number 2 Phillips or a 3/16-inch flat-blade screwdriver.

Note The power supply is not fully seated in the router midplane until you tighten its captive installation screws.

Step 6 If you pushed the router forward in the rack, slowly guide the router back into the rack.

Step 7 Use a 3/16-inch flat-blade screwdriver to tighten the screws that secure the router to front mounting strips of the rack.

This completes the procedures for replacing a DC-input power supply in the router. Proceed to the following section "Reconnecting DC-Input Power and Turning On the Power Supply."

Reconnecting DC-Input Power and Turning On the Power Supply

Warning Read the installation instructions before you connect the system to its power source.

The following procedures explain how to reconnect DC-input power to Cisco 7200 series routers, turn on the power supply, and verify the power supply is operating properly.

To reconnect DC-input power to Cisco 7200 series routers, complete the following steps:

Warning When installing the unit, the ground connection must always be made first and disconnected last.

Step 1 Ensure that the DC power line input leads are disconnected from the power source.

Step 2 If necessary, use a wire stripper to strip approximately 0.55 inch (14 mm) from the DC power line input and ground leads. (See Figure 6).

Step 3 At the rear of the router, check that the power switch on the power supply is in the off (O) position (refer to Figure 9).

Figure 9 Cisco 7200 Series Power Supply DC Receptacles and Power Switch

Step 5 Insert the stripped end of the + DC power line input leads all the way into the + lead receptacle and tighten the receptacle screw using the same 3/16-inch flat-blade screwdriver. Repeat Step 5 for the - DC power line input lead.

Step 6 After tightening the receptacle screw for the ground and DC power line input leads, use the cable tie you saved earlier to secure the three leads to the power supply faceplate.

Step 7 Connect the ground and DC power line input leads to the power source.

Note Each DC-input power supply operating at 24 VDC requires a minimum of 19A service.
Each DC-input power supply operating at 48 VDC requires a minimum of 13A service. Each DC-input power supply operating at 60 VDC requires a minimum of 8A service.

The preceding values are absolute maximum values. Typical system configurations use substantially less. To obtain typical values for your configuration, contact your Cisco sales representative.

This product relies on the building's installation for short-circuit (overcurrent) protection. Ensure that a listed and certified fuse or circuit breaker, 35A maximum 60 VDC, is used on all current-carrying conductors. Site wiring and circuit breakers need to be sized to accommodate the maximum values for safety reasons.

This completes the steps for connecting DC-input power to Cisco 7200 series routers.

To turn on the power supply, complete the following steps:

Step 1 Place the power switch on the newly installed power supply in the on (|) position. The green OK LED on the power supply turns on.

Step 2 Listen for the fans; you should immediately hear them operating.

Step 3 During the boot process, observe the system's LEDs. The LEDs on most of the port adapters go on and off in irregular sequence. Some may go on, go out, and go on again for a short time. On the I/O controller, the IO power OK LED comes on immediately.

Step 4 Observe the initialization process. When the system boot is complete (a few seconds), the network processing engine or network services engine begins to initialize the port adapters and the I/O controller. During this initialization, the LEDs on each port adapter behave differently (most flash on and off). The enabled LED on each port adapter goes on when initialization is completed, and the console screen displays a script and system banner similar to the following:

 
Cisco Internetwork Operating System Software 

 
IOS (tm) 7200 Software (C7200-J-M), Version 11.1(10)

 
Copyright (c) 1986-1996 by cisco Systems, Inc.

 
Compiled Sun 21-Apr-96 04:10 by 

This completes the procedure for removing and replacing the DC-input power supply in a dual power supply configuration, reconnecting input power, and turning on the power supply.

Obtaining Documentation

The following sections explain how to obtain documentation from Cisco Systems.

World Wide Web

You can access the most current Cisco documentation on the World Wide Web at the following URL:

http://www.cisco.com

Translated documentation is available at the following URL:

http://www.cisco.com/public/countries_languages.shtml

Documentation CD-ROM

Cisco documentation and additional literature are available in a Cisco Documentation CD-ROM package, which is shipped with your product. The Documentation CD-ROM is updated monthly and may be more current than printed documentation. The CD-ROM package is available as a single unit or through an annual subscription.

Ordering Documentation

Cisco documentation is available in the following ways:

Registered Cisco Direct Customers can order Cisco product documentation from the Networking Products MarketPlace:

http://www.cisco.com/cgi-bin/order/order_root.pl

Registered Cisco.com users can order the Documentation CD-ROM through the online Subscription Store:

http://www.cisco.com/go/subscription

Nonregistered Cisco.com users can order documentation through a local account representative by calling Cisco corporate headquarters (California, USA) at 408 526-7208 or, elsewhere in North America, by calling 800 553-NETS (6387).

Documentation Feedback

If you are reading Cisco product documentation on Cisco.com, you can submit technical comments electronically. Click Leave Feedback at the bottom of the Cisco Documentation home page. After you complete the form, print it out and fax it to Cisco at 408 527-0730.

You can e-mail your comments to bug-doc@cisco.com.

To submit your comments by mail, use the response card behind the front cover of your document, or write to the following address:

Cisco Systems
Attn: Document Resource Connection
170 West Tasman Drive
San Jose, CA 95134-9883

We appreciate your comments.

Obtaining Technical Assistance

Cisco provides Cisco.com as a starting point for all technical assistance. Customers and partners can obtain documentation, troubleshooting tips, and sample configurations from online tools by using the Cisco Technical Assistance Center (TAC) Web Site. Cisco.com registered users have complete access to the technical support resources on the Cisco TAC Web Site.

Cisco.com

Cisco.com is the foundation of a suite of interactive, networked services that provides immediate, open access to Cisco information, networking solutions, services, programs, and resources at any time, from anywhere in the world.

Cisco.com is a highly integrated Internet application and a powerful, easy-to-use tool that provides a broad range of features and services to help you to

Streamline business processes and improve productivity
Resolve technical issues with online support
Download and test software packages
Order Cisco learning materials and merchandise
Register for online skill assessment, training, and certification programs

You can self-register on Cisco.com to obtain customized information and service. To access Cisco.com, go to the following URL:

http://www.cisco.com

Technical Assistance Center

The Cisco TAC is available to all customers who need technical assistance with a Cisco product, technology, or solution. Two types of support are available through the Cisco TAC: the Cisco TAC Web Site and the Cisco TAC Escalation Center.

Inquiries to Cisco TAC are categorized according to the urgency of the issue:

Priority level 4 (P4)—You need information or assistance concerning Cisco product capabilities, product installation, or basic product configuration.
Priority level 3 (P3)—Your network performance is degraded. Network functionality is noticeably impaired, but most business operations continue.
Priority level 2 (P2)—Your production network is severely degraded, affecting significant aspects of business operations. No workaround is available.
Priority level 1 (P1)—Your production network is down, and a critical impact to business operations will occur if service is not restored quickly. No workaround is available.

Which Cisco TAC resource you choose is based on the priority of the problem and the conditions of service contracts, when applicable.

Cisco TAC Web Site

The Cisco TAC Web Site allows you to resolve P3 and P4 issues yourself, saving both cost and time. The site provides around-the-clock access to online tools, knowledge bases, and software. To access the Cisco TAC Web Site, go to the following URL:

http://www.cisco.com/tac

All customers, partners, and resellers who have a valid Cisco services contract have complete access to the technical support resources on the Cisco TAC Web Site. The Cisco TAC Web Site requires a Cisco.com login ID and password. If you have a valid service contract but do not have a login ID or password, go to the following URL to register:

http://www.cisco.com/register/

If you cannot resolve your technical issues by using the Cisco TAC Web Site, and you are a Cisco.com registered user, you can open a case online by using the TAC Case Open tool at the following URL:

http://www.cisco.com/tac/caseopen

If you have Internet access, it is recommended that you open P3 and P4 cases through the Cisco TAC Web Site.

Cisco TAC Escalation Center

The Cisco TAC Escalation Center addresses issues that are classified as priority level 1 or priority level 2; these classifications are assigned when severe network degradation significantly impacts business operations. When you contact the TAC Escalation Center with a P1 or P2 problem, a Cisco TAC engineer will automatically open a case.

To obtain a directory of toll-free Cisco TAC telephone numbers for your country, go to the following URL:

http://www.cisco.com/warp/public/687/Directory/DirTAC.shtml

Before calling, please check with your network operations center to determine the level of Cisco support services to which your company is entitled; for example, SMARTnet, SMARTnet Onsite, or Network Supported Accounts (NSA). In addition, please have available your service agreement number and your product serial number.

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