Table Of Contents
Installing and Removing Packet Voice/fax DSP Modules
Tools and Equipment Needed
Safety Warnings
Warning Conventions
Power Supply Warnings
Electrical Warnings
Preventing Electrostatic Discharge Damage
Installing PVDMs
Accessing the Motherboard
Removing PVDMs
Installing PVDMs
Closing the Chassis
Obtaining Documentation
World Wide Web
Documentation CD-ROM
Ordering Documentation
Documentation Feedback
Obtaining Technical Assistance
Cisco.com
Technical Assistance Center
Contacting TAC by Using the Cisco TAC Website
Contacting TAC by Telephone
Installing and Removing Packet Voice/fax DSP Modules
This document describes how to install and remove packet voice/fax digital signal processor (DSP) modules (PVDM) in Cisco 1750 or Cisco 1751 router motherboards.
Use this document with your router installation and configuration guide and the regulatory compliance and safety information for your router.
Tools and Equipment Needed
You need the following tools and equipment to remove and install PVDMs in Cisco 1750 or Cisco 1751 routers:
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Number-1 Phillips screwdriver
•ESD-preventive wrist strap
•Antistatic mat
Safety Warnings
Safety warnings appear throughout this publication in procedures that can harm you if they are performed incorrectly. A warning symbol precedes each warning statement.
Warning Conventions
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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.
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Waarschuwing
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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.
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Varoitus
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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).
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Attention
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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.
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Warnung
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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.
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Avvertenza
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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.
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Advarsel
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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.
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Aviso
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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.
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¡Advertencia!
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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.
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Varning!
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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.
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Power Supply Warnings
The following warnings apply when you are installing a card or working with the power supply:
Warning Read the installation instructions before you connect the system to its power source.
Warning Only trained and qualified personnel should be allowed to install or replace this equipment.
Warning Before working on a system that has an on/off switch, turn OFF the power and unplug the power cord.
Warning Ultimate disposal of this product should be handled according to all national laws and regulations.
Electrical Warnings
The following warnings apply when you are working with electricity:
Warning To avoid electric shock, do not connect safety extra-low voltage (SELV) circuits to telephone-network voltage (TNV) circuits. LAN ports contain SELV circuits, and WAN ports contain TNV circuits. Both LAN and WAN ports may use RJ-45 connectors. Use caution when connecting cables.
Warning No operator-serviceable parts inside. Refer servicing to qualified personnel.
Follow these guidelines when working on equipment powered by electricity:
•Locate the emergency power-off switch in the room in which you are working. Then, if an electrical accident occurs, you can quickly shut the power off.
•Before working on the router, turn off power to the router and unplug the power cord.
•Disconnect all power before doing the following:
–Installing or removing a router chassis
–Working near power supplies
•Do not work alone if potentially hazardous conditions exist.
•Never assume that power is disconnected from a circuit. Always check.
•Look carefully for possible hazards in your work area, such as moist floors, ungrounded power extension cables, and missing safety grounds.
If an electrical accident occurs, proceed as follows:
•Use caution; do not become a victim yourself.
•Turn off power to the router.
•If possible, send another person to get medical aid. Otherwise, determine the condition of the victim and then call for help.
•Determine if the victim needs rescue breathing or external cardiac compressions; then take appropriate action.
Preventing Electrostatic Discharge Damage
Electrostatic discharge (ESD) can damage equipment and impair electrical circuitry. It can occur when printed circuit cards are improperly handled and can result in complete or intermittent failures. Always follow ESD prevention procedures when removing and replacing cards. Ensure that the router chassis is electrically connected to earth ground. Wear an ESD-preventive wrist strap, ensuring that it makes good skin contact. Connect the clip to an unpainted surface of the chassis frame to safely channel unwanted ESD voltages to ground. To guard against ESD damage and shocks, the wrist strap and cord must be used properly. If no wrist strap is available, ground yourself by touching the metal part of the chassis.
Caution For safety, periodically check the resistance value of the antistatic strap, which should be between 1 and 10 megohms (Mohm).
Installing PVDMs
This section describes how to install PVDMs on the Cisco 1750 or Cisco 1751 router motherboards.
Accessing the Motherboard
To remove or install PVDMs on the Cisco 1750 or Cisco 1751 router motherboard, you must open the chassis. Opening the chassis requires a number-1 Phillips screwdriver.
Follow these steps to open the chassis:
Step 1 Make sure the router is turned off and is disconnected from the power supply.
Step 2 Turn the router upside down, and place the router on a flat surface.
Step 3 Use the Phillips screwdriver to remove the four screws that hold the top and bottom of the chassis together. (See Figure 1.)
Figure 1 Removing the Chassis Screws
Step 4 Turn the router right-side up.
Step 5 Gently pull the top of the router (which is facing up toward you) up and away from the bottom of the router (which is resting on the flat surface).
At this point, disconnect the fan, which is inside the top of the router chassis, from the motherboard. Disconnect the fan cable from the connector (labeled FAN) on the motherboard.
Step 6 Place the router bottom on an antistatic mat, and locate the PVDM slot.
The motherboard in the Cisco 1750 series router has one 72-pin socket for a PVDM, located on top of the motherboard, behind the stacked WIC/VIC slots 0 and 1. (See Figure 2.) The motherboard in the Cisco 1751 series router has two 72-pin sockets for a PVDM. (See Figure 3.)
Figure 2 PVDM Slot Location on a Cisco 1750 Router Motherboard
Figure 3 PVDM Slot Location on a Cisco 1751 Router Motherboard
Removing PVDMs
Follow these steps to remove PVDMs:
Step 1 Find the PVDM sockets on the Cisco 1750 series router motherboard (see Figure 2), or on the Cisco 1751 series router motherboard (see Figure 3).
Caution Handle PVDMs by the card edges only. PVDMs are ESD-sensitive components and can be damaged by mishandling.
Step 2 Remove the PVDM. To lift the PVDM out of its socket, pull the locking spring clips on both sides outward and tilt the PVDM toward the right side of the board, free of the clips. (See Figure 4.)
Figure 4 Removing PVDMs
Step 3 Hold the PVDM by the edges with your thumb and index finger. Lift the PVDM out of the socket. Place the removed PVDM in an antistatic bag to protect it from ESD damage.
Step 4 Repeat Step 2 and Step 3 for each PVDM.
Installing PVDMs
Follow these steps to install PVDMs:
Step 1 Find the PVDM slots on the Cisco 1750 or Cisco 1751 router motherboard (see Figure 2 or Figure 3).
Caution Handle PVDMs by the card edges only. PVDMs are ESD-sensitive components and can be damaged by mishandling. To avoid damaging ESD-sensitive components, observe all ESD precautions.
PVDMs are manufactured with a polarization notch to ensure proper orientation and alignment holes proper positioning. Figure 5 shows the polarization notch and alignment holes on a PVDM card. PVDM cards are installed with the connector edge down, the polarization notch near the front of the board, and the component side facing the right side of the board.
Figure 5 PVDM Orientation
Step 2 Hold the PVDM with the polarization notch on the right, near the front of the board, and the component side away from you, with the connector edge at the bottom. (See Figure 4.)
Step 3 Beginning with band 0, insert the PVDM into the connector slot at an angle, tilted toward the right side of the board. When the PVDM is properly seated, the socket guide posts fit through the alignment holes, and the connector springs click into place.
Step 4 Ensure that each PVDM is straight and that the alignment holes (as shown in Figure 6) line up with the plastic guides on the socket.
Figure 6 Installing PVDMs
Caution It is normal to feel some resistance, but do not use excessive force on the PVDM, and do not touch the surface components.
Step 5 Repeat Step 2 through Step 4 for each PVDM.
Closing the Chassis
To close the chassis, follow these steps:
Step 1 If you disconnected the fan from the motherboard as described in the "Accessing the Motherboard" section, reconnect the fan cable to the connector labeled FAN on the motherboard.
Step 2 Locate the posts that protrude from the inside of the chassis cover, and locate the corresponding openings on the chassis bottom.
Step 3 Line up the posts with the corresponding openings (see Figure 7), and carefully slide the posts into the openings. Be careful not to damage the router motherboard with the posts.
Caution Be careful not to damage the slot guides on the DIMM socket. If the guides are open, caution is necessary while installing the top of the chassis because improper installation can break the guides off of the DIMM socket. (The Cisco 1751 series router is shipped with a blank DIMM in the slot to keep the guides up and out of the way.)
Figure 7 Closing the Router Chassis
Step 4 Replace the screws that you removed when opening the chassis. (See Figure 1.)
Step 5 To install a voice interface card in the chassis, see the Cisco WAN Interface Cards Hardware Installation Guide publication. If you do not need to install a voice interface card, and if the router was previously running, reinstall the network interface cables and turn ON power to the router.
Obtaining Documentation
The following sections provide sources for obtaining documentation from Cisco Systems.
World Wide Web
You can access the most current Cisco documentation on the World Wide Web at the following sites:
•http://www.cisco.com
•http://www-china.cisco.com
•http://www-europe.cisco.com
Documentation CD-ROM
Cisco documentation and additional literature are available in a CD-ROM package, which ships 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 as 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, in North America, by calling 800 553-NETS(6387).
Documentation Feedback
If you are reading Cisco product documentation on the World Wide Web, you can submit technical comments electronically. Click Feedback in the toolbar and select Documentation. After you complete the form, click Submit to send it to Cisco.
You can e-mail your comments to bug-doc@cisco.com.
To submit your comments by mail, for your convenience many documents contain a response card behind the front cover. Otherwise, you can mail your comments to the following address:
Cisco Systems, Inc.
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. For Cisco.com registered users, additional troubleshooting tools are available from the TAC website.
Cisco.com
Cisco.com is the foundation of a suite of interactive, networked services that provides immediate, open access to Cisco information and resources at anytime, from anywhere in the world. This highly integrated Internet application is a powerful, easy-to-use tool for doing business with Cisco.
Cisco.com provides a broad range of features and services to help customers and partners streamline business processes and improve productivity. Through Cisco.com, you can find information about Cisco and our networking solutions, services, and programs. In addition, you can resolve technical issues with online technical support, download and test software packages, and order Cisco learning materials and merchandise. Valuable online skill assessment, training, and certification programs are also available.
Customers and partners can self-register on Cisco.com to obtain additional personalized information and services. Registered users can order products, check on the status of an order, access technical support, and view benefits specific to their relationships with Cisco.
To access Cisco.com, go to the following website:
http://www.cisco.com
Technical Assistance Center
The Cisco TAC website is available to all customers who need technical assistance with a Cisco product or technology that is under warranty or covered by a maintenance contract.
Contacting TAC by Using the Cisco TAC Website
If you have a priority level 3 (P3) or priority level 4 (P4) problem, contact TAC by going to the TAC website:
http://www.cisco.com/tac
P3 and P4 level problems are defined as follows:
•P3—Your network performance is degraded. Network functionality is noticeably impaired, but most business operations continue.
•P4—You need information or assistance on Cisco product capabilities, product installation, or basic product configuration.
In each of the above cases, use the Cisco TAC website to quickly find answers to your questions.
To register for Cisco.com, go to the following website:
http://www.cisco.com/register/
If you cannot resolve your technical issue by using the TAC online resources, Cisco.com registered users can open a case online by using the TAC Case Open tool at the following website:
http://www.cisco.com/tac/caseopen
Contacting TAC by Telephone
If you have a priority level 1(P1) or priority level 2 (P2) problem, contact TAC by telephone and immediately open a case. To obtain a directory of toll-free numbers for your country, go to the following website:
http://www.cisco.com/warp/public/687/Directory/DirTAC.shtml
P1 and P2 level problems are defined as follows:
•P1—Your production network is down, causing a critical impact to business operations if service is not restored quickly. No workaround is available.
•P2—Your production network is severely degraded, affecting significant aspects of your business operations. No workaround is available.
