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

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 instructionsare applicableonly tosystems thatare alreadyoperational andfor whichﬁrst-time installation and startupveriﬁcation has been performed.If you have notalready installed the system and veriﬁed that it operates properly, or if you are moving the chassis to anew 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 Systems, Inc.

• Cisco Information Online, page 48

Product Overview

The Cisco7000 andCisco 7507 replacementchassis comprisethe sheet metalhousing, frontchassis 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 processormodules 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 ofthe 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

Upper power supply

Captive installation screw

Lower power supply

DC FAIL AC POWER

H2358

Slot 0

3 4 SP

slot SSP slot

2 Cisco 7000 and Cisco 7507 Chassis Replacement Instructions

Figure 2 Cisco 7507 Chassis Rear View

aptive stallation screw

pper

ower supply

DC FAIL AC POWER

NORMAL

Product Overview

ENABLE

hassis

rounding

ceptacles

aptive stallation screw

ower ower supply

DC FAIL AC POWER

Slot 0

EJECT

SLOT 1

SLOT 0

MASTER

SLAVE

SLAVE/MASTER

CPU HALT

RESET

AUX.

ROUTE SWITCH PROCESSOR 2

CONSOLE

34 5 6

ENABLE

H3888

RSP slots

The lower power supply bay is the default bay for systems with a single supply. The upper bay houses thesecond power supplyin systemswith redundantpower.Power suppliesslide intothe 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 forthe off position, and | forthe 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

H1315a

Locking device in ON and locked positions

Cable-retention clip

Safety interlock switch

To the rightof the powersupply bays, the processorslots house the processormodules. In the Cisco 7000, theRP isalwayslocated inthe farright slot(the RPslot), andthe SP(or SSP)is alwayslocated in the adjacent slot. The remaining ﬁve interface processor slots, numbered 0–4 from left to right, support anycombination of network interfacetypes: serial, FDDI,Ethernet, and Token Ring, andso 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 processormodules slideinto theslots andconnect directlyto thebackplane. Thebackplane 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

Interface processor

slots 0–5

Top key guide

SSP (or SSP)

Rear of processor card

Bottom

Interface processor

slots 0–5

SSP (or SSP)

Bottom key guide

4 Cisco 7000 and Cisco 7507 Chassis Replacement Instructions

H3144

Figure 5 Cisco 7507 System Backplane Slot Key Guides

Key guides on interface

processors and RSP2

Top

RSP2

Top key guide

Product Overview

Interface processor

slots

RSP2

slots

Bottom

Rear of processor card

Bottom key guide

H3126

Spring-loaded ejectorlevers helpto ensure thatthe processormodules are eitherfully inserted inthe 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 descriptionsof all system components, refer tothe Cisco 7000 Hardware Installation and Maintenance or Cisco 7507 Hardware Installation and Maintenance publications.

Figure 8 on page 19 shows a detail ofthe bottom ejector lever function. Whenyou push the bottom ejector leverupward, andpush thecorresponding topejector leverdownward,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 backplaneconnectors on the card are fully seatedin, or

fully ejectedfrom, the backplane. Failureto use theejector levers couldresult in a partialbackplane connection, which can hang the system.

Cisco 7000 and Cisco 7507 Chassis Replacement Instructions 5

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 Thiswarning symbol meansdanger. You arein a situationthat could causebodily 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 letselkan veroorzaken.Voordat uaan enige apparatuurgaat werken, dientu zichbewust 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 Tämävaroitusmerkkimerkitsee vaaraa. Olettilanteessa,joka voijohtaaruumiinvammaan.

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

Körperverletzungführen könnte. Bevor Siemit derArbeit anirgendeinem Gerätbeginnen, 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 relativiai circuitielettrici edessere alcorrentedelle pratichestandard perla 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 elektriskekretser innebærer,samt gjøredeg kjentmed vanlig praksisnår detgjelder åunngå ulykker.

Aviso Este símbolo de aviso indicaperigo. Encontra-se numasituação que lhepoderá 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

Safety Guidelines

Prerequisites

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 whenthe power cord isconnected. (For translations ofthis 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 areafor 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 76pounds 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 tolift the chassis. Grasp the chassis underneath the lower edge

and lift with both hands.To prevent injury, keep your back straightand 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 thepower supplies or on theinterface processors, or by theplastic panels on the front of the chassis. These handles were not designed to supportthe 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,neverattempt tolift thechassis withthe handleson thepower 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 theDC circuit, switch thecircuit breaker tothe OFF position,and tape the switchhandle 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

Safety with Electricity

Prerequisites

Follow these basic guidelines when working with any electrical equipment:

• Before beginning any procedures, locate the emergency power-off switch forthe room in which

you are working.

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

• Always disconnectall cables (including network interface andtelephone wiring) andremove 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

• Never touch uninsulated telephone wires or terminals unless the telephone line has been

• Use caution when installing or modifying telephone lines.

Cable Strain Relief

If possible,position thenew replacementchassis close enoughto the existing systemso thatyou can avoidhaving todisconnect powerand interface cables.Be sure to disengage anystrain reliefdevices before attempting to pull the cables from the port. Following are descriptions of the different methodsof strainrelief thatare usedon thepowersupplies andthe varioustypes ofnetworkinterface ports:

• On the AC-input power supplies, a cable retention clip snaps up around the connector on the

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

• Serial interface cables (alltypes) use thumbscrews on the cableconnectors that secure the cable

locations.

disconnected at the network interface.

power cord to prevent it from being inadvertently pulled out of the power supply port. Before attempting to disconnect the power cord, be sure topush the retention clip down away from the cable connector.

cables.

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 ofthe connectorthat actlike springsand areconstrained by theinside ofthe connectorport. 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 someor all of thefollowing toolsand parts to performthis replacement procedure.Before you begin, read through the procedure to determine which tools you need for this replacement procedure.

• Number 2 Phillips or3/16-inch ﬂat-blade screwdriver forthe captive installationscrews on each

processor module. (Most systems use Phillips screws, but some of the earlier systemsproduced use slotted screws.)

• A 1/4-inchﬂat-blade or Number 2Phillips screwdriver toinstall the power supply. Earlier power

supplies (the ﬁrst few hundred shipped) have a slotted-head captive installation screw.

• ESD-preventionequipment orthe disposable groundingwrist strapincluded withall 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 thatis ﬁxed in a metal carrier. Electromagnetic interference (EMI) shielding, connectors,and ahandle are integral componentsof the carrier. TheLED board,however, isnot intendedto behandled andhas noframe orshielding.Handle theLED boardby theedges 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 removingor installing anLED board, connectthe equipment endof the groundstrap to an

unpainted surface of the chassis, suchas the vertical metal frame that is exposed when thefront 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 surfaceor in a staticshielding bag. If

you are returning the board tothe factory, immediately placeit in a static shielding bag to avoid ESD damage.

• Avoid contactbetween the boardand clothing. Thewrist strap only protectsthe board fromESD

voltages on the body; ESD voltages on clothing can still cause damage.

Caution Forsafety,periodically checkthe resistancevalue ofthe antistaticstrap. Themeasurement

should be within the range of 1 and 10 megohms.

Preparing the Work Area

Althoughsome networkdowntime isunavoidablewhile youremove theRP andSP andreplacethem in the new chassis, you can minimize network downtime by placing the old and new chassis close together.If your existingchassis is mounted ina rack, and thereis space in thesame 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 anexisting chassis that israck mounted, you are ableto install the new chassis

in the same rack or an adjacent rack, and moving theprocessor modules to the new chassis will not strain the interface cables.

If these conditionsare not true, for instance,if you must remove a rack-mountedchassis 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 (DocumentNumber 78-1067-xx), which ships with every newchassis; this

document is also available on UniverCD.

Replacing a Rack-Mounted Chassis

This section describes how to replacethe 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) chassisbefore youremovethe existingsystem, youcanminimize downtime and avoidhaving to disconnectnetwork interfacecables byleaving theexisting systemoperating whileyou installthe replacementchassis inthe rack.Justensure thatboth chassis,when installed, will beclose enoughto avoidstraining cablesconnected tothe interfaceprocessors. If thisoption 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 therack to make room for thereplacement 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 tothe interface ports.As you disconnectcables from theinterface processors, completethe conﬁguration worksheetprovided atthe end ofthis document tohelp you reconnectthe 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 tolift the chassis. Grasp the chassis underneath the lower edge

12 Cisco 7000 and Cisco 7507 Chassis Replacement Instructions

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 Ensurethat there are atleast 20 inches of verticalspace free in therack 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 ensurethat the system remains stable. The followingguidelines 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.)

Replacing a Rack-Mounted Chassis

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 rack- mounting

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 Proceedto the section“Verifying the Installation”on page 24to verify thatall 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 attemptto lift orsupport the frontof the chassiswith 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 rackgrasp the chassis alongthe metal undersidesbehind the plastic frontpanels. 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 rackspace isnot available toinstall bothchassis (ifyou mustremove theexisting system from the rack to make room for the replacement chassis), you will have to disconnect all network interface cables and remove the powersupplies before removing the existing system from therack. Be sureto labelthe interface cables to avoid crossingthem whenyou reconnect themto theinterface ports. Asyou disconnectcables fromthe interfaceprocessors, complete theconﬁguration worksheet to help you reconnect the cables to the correct ports.

Step 1 Usethe conﬁguration worksheetprovided at the endof this document oryour 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

Step 3 Afterreviewing thedescriptions in the section“Cable Strain Relief” on page9, 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 tippingwhile you move the chassisinto 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 installedin the chassis.) Referto the section “Moving Power Supplies” on page 21

Cisco 7000 and Cisco 7507 Chassis Replacement Instructions 15

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