Cisco Systems CHAS-7K, CHAS-7507, MAS-7507, MAS-7K User Manual

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Doc. No. 78-1064-02

Cisco 7000 and Cisco 7507

Chassis Replacement Instructions

Product Numbers: CHAS-7K, MAS-7K, CHAS-7507, MAS-7507

Customer Order Number: DOC-781064=

This document contains instructions for replacing a Cisco 7000 and Cisco 7507 chassis as a spare part.

Note With a few exceptions, the chassis replacement procedures are identical for both chassis; therefore, throughout this document, both chassis are referred to as the chassis; the exceptions are clearly noted.

You will remove the processor modules and power supplies from your existing chassis and install them in the replacement chassis. The term processor modules refers to the RP, SP (or SSP), and interface processors in the Cisco 7000, and the RSP2 and interface processors in the Cisco 7507.

These instructions are applicable only to systems that are already operational and for which first-time installation and startup verification has been performed. If you have not already installed the system and verified that it operates properly, or if you are moving the chassis to a new location, refer to the

Cisco 7000 Hardware Installation and Maintenance or Cisco 7507 Hardware Installation and Maintenance publications for installation information.

The sections in this document include the following:

Product Overview, page 2

Prerequisites, page 6

Unpacking the Chassis, page 11

Replacing a Rack-Mounted Chassis, page 11

Moving System Components, page 18

Verifying the Installation, page 24

Cisco Information Online, page 48

Copyright © 1995

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Cisco Systems, Inc.

All rights reserved.

Product Overview

Product Overview

The Cisco 7000 and Cisco 7507 replacement chassis comprise the sheet metal housing, front chassis panels, and all internal components (MAS-7K and MAS-7507, respectively). An optional replacement chassis is shipped with a spare power supply (CHAS-7K and CHAS-7507, respectively).

The rear of the chassis contains the seven processor slots and the two power supply bays. The processor slots in the replacement chassis contain blank board carriers, which you will remove individually as you install the interface processors from the old system. You will complete the system by installing the processor modules and power supplies that you remove from your existing system.

All of the components you will move to the new chassis are accessible from the rear of the chassis. The descriptions that follow assume that you are viewing the chassis from the rear, or interface-processor end, which is the orientation of the Cisco 7000 shown in Figure 1 or the

Cisco 7507 shown in Figure 2.

Figure 1 Cisco 7000 Chassis Rear View

Captive installation screw

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2 Cisco 7000 and Cisco 7507 Chassis Replacement Instructions

Cisco Systems CHAS-7K, CHAS-7507, MAS-7507, MAS-7K User Manual

Product Overview

Figure 2 Cisco 7507 Chassis Rear View

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The lower power supply bay is the default bay for systems with a single supply. The upper bay houses the second power supply in systems with redundant power. Power supplies slide into the bays and must be fully inserted before the power switch can be turned on. On each power supply, the on/off switch prevents the power supply from being removed from the chassis when the power supply switch (labeled O for the off position, and | for the on position) is in the on (|) position. (See Figure 3.) When the switch is on, a metal tab extends into a slot in the chassis. When the switch is turned off (O), the tab is raised and clears the slot. A captive installation screw at the top of each supply secures the supply in the bay and provides grounding for the system.

Cisco 7000 and Cisco 7507 Chassis Replacement Instructions 3

Product Overview

Figure 3 Power Supply Safety Interlocks

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Safety interlock

Locking device

 

 

in ON and

Cable-retention clip

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locked positions

To the right of the power supply bays, the processor slots house the processor modules. In the Cisco 7000, the RP is always located in the far right slot (the RP slot), and the SP (or SSP) is always located in the adjacent slot. The remaining five interface processor slots, numbered 0–4 from left to right, support any combination of network interface types: serial, FDDI, Ethernet, and Token Ring, and so forth.

In the Cisco 7507, the RSP2 is always located in slot 2 or 3. The remaining six interface processor slots, numbered 0 and 1 and 4 through 6, from left to right, support any combination of network interface type.

The processor modules slide into the slots and connect directly to the backplane. The backplane slots are keyed to guides on each type of board. (See Figure 4 for the Cisco 7000 and Figure 5 for the Cisco 7507.) The keys ensure that the processor modules can be installed only in their designated slots.

Figure 4 Cisco 7000 System Backplane Slot Key Guides

Key guides on interface processors, RP and SP (or SSP)

 

Top

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key guide

slots 0–5

 

 

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4 Cisco 7000 and Cisco 7507 Chassis Replacement Instructions

Product Overview

Figure 5 Cisco 7507 System Backplane Slot Key Guides

Key guides on interface processors and RSP2

 

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Interface processor slots

Rear of processor card

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Spring-loaded ejector levers help to ensure that the processor modules are either fully inserted in the backplane or fully dislodged from it. It is particularly important to use the ejector levers when removing or installing processor modules because the bus connectors on the boards must be either fully inserted in the backplane or fully dislodged from it when the system is operating. Any processor module that is only partially connected to the backplane can hang the bus.

Captive installation screws at the top and bottom of each processor module faceplate, when tightened, provide EMI shielding and also help ensure proper seating in the backplane. (See Figure 8.) After using the ejector levers to install a processor module, tighten the top and bottom captive installation screws to prevent the module from becoming partially dislodged from the backplane. These screws must be tightened to meet EMI specifications.

For complete descriptions of all system components, refer to the Cisco 7000 Hardware Installation and Maintenance or Cisco 7507 Hardware Installation and Maintenance publications.

Figure 8 on page 19 shows a detail of the bottom ejector lever function. When you push the bottom ejector lever upward, and push the corresponding top ejector lever downward, the ejector levers push the board connectors into the backplane at the rear of the slot inside the chassis. Push the bottom ejector lever a full 90 degrees upward, and push the upper ejector lever 90 degrees downward, to ensure that the board connectors are fully seated in the backplane.

Caution The ejector levers ensure that the backplane connectors on the card are fully seated in, or fully ejected from, the backplane. Failure to use the ejector levers could result in a partial backplane connection, which can hang the system.

Cisco 7000 and Cisco 7507 Chassis Replacement Instructions 5

Prerequisites

Prerequisites

Before you move a chassis or any of the system components, review the safety guidelines and requirements in this section and ensure that you have the necessary parts and tools you will need.

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.

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.

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.

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.

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.

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.

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.

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.

¡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.

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.

6 Cisco 7000 and Cisco 7507 Chassis Replacement Instructions

Prerequisites

Safety Guidelines

The following guidelines will help to ensure your safety and protect the equipment. This list is not inclusive of all potentially hazardous situations, so be alert.

Warning Before working on a system that has an on/off switch, turn OFF the power and unplug the power cord. (For translations of this safety warning, refer to the section “Power Disconnection Warning” on page 36.)

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. For systems without a power switch, line voltages are present within the power supply when the power cord is connected. (For translations of this safety warning, refer to the section “Power Supply Warning” on page 36.)

Warning Before working on a chassis or working near power supplies, unplug the power cord on AC units; disconnect the power at the circuit breaker on DC units. (For translations of this safety warning, refer to the section “Power Supply Disconnection Warning” on page 37.)

Warning This unit might have more than one power cord. To reduce the risk of electric shock, disconnect the two power supply cords before servicing the unit. (For translations of this safety warning, refer to the section “Electric Shock Warning” on page 38.)

Never try to lift the chassis by yourself; two people are required to lift the chassis.

Use a hand truck or pallet jack to move the chassis between locations.

Always disconnect all power cords and interface cables before moving the chassis.

Keep tools and chassis components away from walk areas.

Do not work alone when potentially hazardous conditions exist.

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.

Cisco 7000 and Cisco 7507 Chassis Replacement Instructions 7

Prerequisites

Lifting the Chassis Safely

The chassis weighs 76 pounds when empty (no processor modules or power supplies installed) and 145 pounds when fully configured with two power supplies and all interface slots populated. Whenever you lift the chassis or any heavy object, follow these guidelines:

Warning Two people are required to lift the chassis. Grasp the chassis underneath the lower edge and lift with both hands. To prevent injury, keep your back straight and lift with your legs, not your back. To prevent damage to the chassis and components, never attempt to lift the chassis with the handles on the power supplies or on the interface processors, or by the plastic panels on the front of the chassis. These handles were not designed to support the weight of the chassis. (For translations of this safety warning, refer to the section “Chassis Lifting Warning” on page 39.)

Figure 6 Lifting Safely

H2336

Caution To prevent damage, never attempt to lift the chassis with the handles on the power supplies or the interface processors. These handles are not designed to support the weight of the chassis.

Note The following warning is for units equipped with DC-input power supplies.

Warning Before performing any of the following procedures, 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. (For translations of this safety warning, refer to the section “DC Power Disconnection Warning” on page 40.)

Remove all power supplies before lifting the chassis. Each supply weighs 20 pounds.

Always disconnect all external cables before lifting or moving the chassis.

8 Cisco 7000 and Cisco 7507 Chassis Replacement Instructions

Prerequisites

Safety with Electricity

Follow these basic guidelines when working with any electrical equipment:

Before beginning any procedures, locate the emergency power-off switch for the room in which you are working.

Never assume that power has been disconnected from a circuit; always check.

Always disconnect all cables (including network interface and telephone wiring) and remove all power supplies before moving or lifting the chassis.

Warning Always disconnect all cables before moving or working on the chassis. Even when the chassis is disconnected from all power sources, telephone wiring can still deliver potentially lethal electrical surges.

Never install telephone wiring during a lightning storm.

Warning Do not work on the system or connect or disconnect cables during periods of lightning activity. (For translations of this safety warning, refer to the section “Lightning Activity Warning” on page 41.)

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.

Cable Strain Relief

If possible, position the new replacement chassis close enough to the existing system so that you can avoid having to disconnect power and interface cables. Be sure to disengage any strain relief devices before attempting to pull the cables from the port. Following are descriptions of the different methods of strain relief that are used on the power supplies and the various types of network interface ports:

On the AC-input power supplies, a cable retention clip snaps up around the connector on the power cord to prevent it from being inadvertently pulled out of the power supply port. Before attempting to disconnect the power cord, be sure to push the retention clip down away from the cable connector.

On the DC-input power supplies, two nylon cable ties provide strain relief for the DC-input cables.

Serial interface cables (all types) use thumbscrews on the cable connectors that secure the cable to the FSIP port.

Ethernet interface cables use either slide-type locks or thumbscrews. The Ethernet Interface Processor (EIP) ports are shipped from the factory with slide-type locks on each port; however, a conversion kit is also shipped for replacing the slide-type locks with jackscrews to accommodate Ethernet interface cables with thumbscrews.

Cisco 7000 and Cisco 7507 Chassis Replacement Instructions 9

Prerequisites

Multimode Fiber Distributed Data Interface (FDDI) connectors use small plastic arms on two sides of the connector that act like springs and are constrained by the inside of the connector port. To remove a multimode cable from a FIP port, pinch the two plastic arms inward while pulling the connector out of the port.

When removing any cable, pull the cable out at the connector; never pull or tug on the cable itself. For detailed descriptions of the interface connectors and ports, refer to the Cisco 7000 Hardware Installation and Maintenance or Cisco 7507 Hardware Installation and Maintenance publications.

List of Parts and Tools

You need some or all of the following tools and parts to perform this replacement procedure. Before you begin, read through the procedure to determine which tools you need for this replacement procedure.

Number 2 Phillips or 3/16-inch flat-blade screwdriver for the captive installation screws on each processor module. (Most systems use Phillips screws, but some of the earlier systems produced use slotted screws.)

A 1/4-inch flat-blade or Number 2 Phillips screwdriver to install the power supply. Earlier power supplies (the first few hundred shipped) have a slotted-head captive installation screw.

ESD-prevention equipment or the disposable grounding wrist strap included with all upgrade kits

Antistatic mat, foam pad, or bag for removed processor modules in case you are not able to immediately insert them into the new chassis.

If your chassis is mounted in a rack, you will need the following tools to remove and replace the mounting hardware:

Number 2 Phillips screwdriver

3/16-inch flat-blade screwdrivers

Tape measure

Level

One 7/16-inch open-end (or adjustable) wrench if you will remove the chassis feet

Preventing Electrostatic Discharge Damage

Electrostatic discharge (ESD) damage, which occurs when electronic boards or components are improperly handled, can result in complete or intermittent failures. The processor modules each comprise a printed circuit board that is fixed in a metal carrier. Electromagnetic interference (EMI) shielding, connectors, and a handle are integral components of the carrier. The LED board, however, is not intended to be handled and has no frame or shielding. Handle the LED board by the edges only; never touch the board components, traces, or connector pins.

Caution Always handle an LED board by the edges only; avoid touching the board components, traces, or connector pins.

10 Cisco 7000 and Cisco 7507 Chassis Replacement Instructions

Unpacking the Chassis

Following are guidelines for preventing ESD damage:

Always use an ESD strap and ensure that it makes good skin contact.

When removing or installing an LED board, connect the equipment end of the ground strap to an unpainted surface of the chassis, such as the vertical metal frame that is exposed when the front chassis panels are removed.

Handle boards by the edges only; avoid touching the board components, traces, or connector pins.

Place a removed board component-side-up on an antistatic surface or in a static shielding bag. If you are returning the board to the factory, immediately place it in a static shielding bag to avoid ESD damage.

Avoid contact between the board and clothing. The wrist strap only protects the board from ESD voltages on the body; ESD voltages on clothing can still cause damage.

Caution For safety, periodically check the resistance value of the antistatic strap. The measurement should be within the range of 1 and 10 megohms.

Preparing the Work Area

Although some network downtime is unavoidable while you remove the RP and SP and replace them in the new chassis, you can minimize network downtime by placing the old and new chassis close together. If your existing chassis is mounted in a rack, and there is space in the same rack or another rack close by, install the new chassis in the rack before shutting down the existing chassis. Leave network interface cables connected to the interface ports only if the following conditions are true:

You are able to place the new chassis next to the existing chassis, and moving the processor modules to the new chassis will not strain the interface cables.

You will not have to lift the new chassis after the processor modules and power supplies are installed.

The new chassis is already located in its permanent location, or you will need to move it only a few feet into the space vacated by the old chassis when it is removed.

Before removing an existing chassis that is rack mounted, you are able to install the new chassis in the same rack or an adjacent rack, and moving the processor modules to the new chassis will not strain the interface cables.

If these conditions are not true, for instance, if you must remove a rack-mounted chassis before you can install the new chassis, you must disconnect all power and network interface cables.

Unpacking the Chassis

To unpack the new chassis, follow the directions in the document Cisco 7000 and Cisco 7507 Unpacking Instructions (Document Number 78-1067-xx), which ships with every new chassis; this document is also available on UniverCD.

Replacing a Rack-Mounted Chassis

This section describes how to replace the chassis in a system that is installed in an equipment rack. The order in which you remove the existing system, install the new chassis, and replace the components will vary depending upon the space available in the rack and in the work area. Assess your rack and lab configuration and choose the appropriate replacement plan from the following:

Cisco 7000 and Cisco 7507 Chassis Replacement Instructions 11

Replacing a Rack-Mounted Chassis

If there is sufficient space available in the same rack (or an adjacent rack) to install the replacement (empty) chassis before you remove the existing system, you can minimize downtime and avoid having to disconnect network interface cables by leaving the existing system operating while you install the replacement chassis in the rack. Just ensure that both chassis, when installed, will be close enough to avoid straining cables connected to the interface processors. If this option is possible, proceed to the section “Adding a New Chassis to the Rack.”

If sufficient rack space is not available to install both chassis (if you must remove the existing system from the rack to make room for the replacement chassis), you will have to disconnect all network interface cables and remove the power supplies before removing the existing system from the rack. Be sure to label the interface cables to avoid crossing them when you reconnect them to the interface ports. As you disconnect cables from the interface processors, complete the configuration worksheet provided at the end of this document to help you reconnect the cables to the correct ports. (For the Cisco 7000, refer to Figure 17, and for the Cisco 7507, refer to Figure 18.)

If the existing system is installed in an enclosed rack, or if a power strip or other rack fixture blocks access to the power supply bays, you may have to remove the existing system with the power supplies intact and then install them in the replacement chassis before you install that chassis in the rack. If you must choose this method, ensure that you have sufficient assistance to lift and support the chassis and the rack. The chassis weights over 100 pounds with two power supplies installed, and the rear of the chassis is heaviest.

Note Be sure that you have sufficient help (assistants) to lift and support the chassis and the rack when performing these procedures. The empty replacement chassis weights 75 pounds. A fully configured chassis weighs 145 pounds. Whenever possible, remove all power supplies before moving or lifting the chassis.

Warning Two people are required to lift the chassis. Grasp the chassis underneath the lower edge and lift with both hands. To prevent injury, keep your back straight and lift with your legs, not your back. To prevent damage to the chassis and components, never attempt to lift the chassis with the handles on the power supplies or on the interface processors, or by the plastic panels on the front of the chassis. These handles were not designed to support the weight of the chassis. (For translations of this safety warning, refer to the section “Chassis Lifting Warning” on page 39.)

12 Cisco 7000 and Cisco 7507 Chassis Replacement Instructions

Replacing a Rack-Mounted Chassis

Adding a New Chassis to the Rack

If there is sufficient rack space to install the replacement chassis before you remove the existing system, proceed as follows.

Step 1 Follow the instructions in the section “Unpacking the Chassis” on page 11 to unpack the rack mounting hardware and, after the mounting hardware is installed, to unpack the chassis.

Step 2 Ensure that there are at least 20 inches of vertical space free in the rack above or below the existing system, or in a nearby rack, in which to install the replacement chassis.

Warning To prevent bodily injury when mounting or servicing this unit in a rack, you must take special precautions to ensure that the system remains stable. The following guidelines are provided to ensure your safety:

This unit should be mounted at the bottom of the rack if it is the only unit in the rack.

When mounting this unit in a partially filled rack, load the rack from the bottom to the top with the heaviest component at the bottom of the rack.

If the rack is provided with stabilizing devices, install the stabilizers before mounting or servicing the unit in the rack. (For translations of this safety warning, refer to the section “Chassis Warning—Rack-Mounting and Servicing” on page 42.)

Warning Do not use a ramp inclined at more than 10 degrees. (For translations of this safety warning, refer to the section “Ramp Warning” on page 44.)

Step 3 Follow the instructions in the Cisco 7000 and Cisco 7507 Rack-Mount Kit Installation Instructions (Document Number 78-1058-xx), which is included with the rackmounting hardware, to install the mounting hardware and replacement chassis in the rack.

Step 4 When the replacement chassis is secured in the rack, turn off all power supplies in the existing system.

Step 5 Proceed to the section “Moving System Components” on page 18 to move the power supplies and processor modules to the new chassis.

Caution When removing and replacing interface processors, be careful not to strain or bend network interface cables.

Step 6 When all of the components are moved to the new chassis, ensure that all of the captive installation screws on the power supplies and all interface processors are tightened.

Step 7 Proceed to the section “Verifying the Installation” on page 24 to verify that all components are installed correctly.

Step 8 To remove the old chassis (which should now be empty), use a 1/4-inch flat-blade screwdriver to loosen the four binder-head screws that secure the left and right ears to the front mounting strips on the equipment rack. (See Figure 7).

Cisco 7000 and Cisco 7507 Chassis Replacement Instructions 13

Replacing a Rack-Mounted Chassis

Caution To prevent damage, never attempt to lift or support the front of the chassis with the plastic front panels. The panels can break away and allow the chassis to drop.

Step 9 To remove the empty chassis from the rack, position one person in the back of the rack to push the chassis out the front, and position two people in front of the rack to support the chassis as it is pushed forward out of the rack.

Caution The following step might shift the chassis’ center of gravity to the front of the rack and may cause the rack or the chassis to tip or fall. Before proceeding, ensure that you have sufficient assistance to prevent the rack from toppling and the chassis from falling out of the rack.

Step 10 Slowly push the chassis out of the front of the rack while the two assistants in the front of the rack grasp the chassis along the metal undersides behind the plastic front panels. When the chassis is clear of the rack, lower it to the floor.

Step 11 Follow the safety guidelines in the section “Lifting the Chassis Safely” on page 8, and remove the empty chassis from the area.

Replacing the Existing Rack-Mounted Chassis

If sufficient rack space is not available to install both chassis (if you must remove the existing system from the rack to make room for the replacement chassis), you will have to disconnect all network interface cables and remove the power supplies before removing the existing system from the rack. Be sure to label the interface cables to avoid crossing them when you reconnect them to the interface ports. As you disconnect cables from the interface processors, complete the configuration worksheet to help you reconnect the cables to the correct ports.

Step 1 Use the configuration worksheet provided at the end of this document or your own method to label the interface cables and record the port connection for each cable. (For the Cisco 7000, refer to Figure 17, and for the Cisco 7507, refer to Figure 18.)

Step 2 Turn all power supplies OFF.

Note The following warning is for units equipped with DC-input power supplies.

Warning Before performing any of the following procedures, 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. (For translations of this safety warning, refer to the section “DC Power Disconnection Warning” on page 40.)

Step 3 After reviewing the descriptions in the section “Cable Strain Relief” on page 9, disconnect all power and network interface cables from the rear of the existing system.

14 Cisco 7000 and Cisco 7507 Chassis Replacement Instructions

Replacing a Rack-Mounted Chassis

Caution If the existing chassis is installed in an enclosed rack, or if a power strip or other rack fixture blocks access to the power supply bays, you might have to remove the existing system with the power supplies intact, and then install them in the replacement chassis before you install that chassis in the rack. Ensure that you have sufficient assistance to support the chassis and to prevent the rack from tipping while you move the chassis into or out of the rack. A fully-configured chassis weighs 145 pounds, and the rear of the chassis is heaviest.

Step 4 Remove all power supplies from the existing system and place them aside (leave the processor modules installed in the chassis.) Refer to the section “Moving Power Supplies” on page 21

Cisco 7000 and Cisco 7507 Chassis Replacement Instructions 15

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