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Product Number: PWR-GSR12-AC=
This document contains instructions for installing or replacing an AC-input power supply in the Cisco 12012 Gigabit Switch Router (GSR). The Cisco 12012 is a member of the Cisco 12000 series of Internet routing products. The Cisco 12012 is aimed at scaling the Internet and enterprise backbones to speeds of OC-3/STM-1 (155 Mbps), OC-12/STM-4 (622 Mbps), and OC-48/STM-16 (2.4 Gbps). The Cisco 12012 is built around a high-speed switching fabric that is scalable from 5 to 60 Gbps, providing high-performance to support Internet Protocol (IP) -based local-area networks (LANs) and wide-area networks (WANs).
The sections in this document include the following:
The Cisco 12012 has two card cages; the upper card cage and the lower card cage. (Refer to Figure 1.) The upper card cage has 12 user-configurable slots available for line cards and a Gigabit Route Processor (GRP). One additional slot (rightmost slot) in the upper card cage is non-configurable; it is reserved for an alarm card. The line cards and the GRP are not slot dependent; you can install the line cards and the GRP in any of the first 12 available slots.

The lower card cage, located behind the air filter, has five horizontal slots for switch fabric cards.
Below the lower card cage is a power supply bay. Up to four AC-input power supplies or two DC-input power supplies can be installed in the bay.
The AC-input power supply is a modular power supply for the Cisco 12012. The Cisco 12012 supports up to four AC-input power supplies in a power supply bay located below the lower card cage. (Refer to Figure 1.) The power supply bay is divided into four positions designated A1, A2, B1, and B2 (from left to right). Cisco 12012 systems come standard with two AC-input power supplies installed in power supply bay positions A1 and B1. You can install a third and fourth AC-input power supply in power supply bay positions A2 and B2 for power supply redundancy and current sharing. Unoccupied power supply bay positions must have power supply blanks installed to maintain the airflow and for EMI considerations.
The Cisco 12012 supports online insertion and removal of redundant power supplies, which means you can remove and replace an AC-input power supply in systems equipped with three or four AC-input power supplies. In systems with only two power supplies, you must power down the system before you replace an AC-input power supply.
![]() | Warning AC operation requires a minimum configuration of two AC-input power supplies |
The AC-input power supply is a modular unit measuring 3.8 inches (9.6 cm) wide by 10 inches (25.4 cm) high by 15 inches (38 cm) deep and weighs 18 lb (8 kg). (Refer to Figure 2.) The power supply slides in and out of the power supply bay and is secured in place by a combination of a single captive screw on the power supply faceplate and a latch that is part of the power switch also located on the power supply faceplate.
Electrical connections between the power supply and the Cisco 12012 backplane are made through a connector located at the back of the power supply.
![]() | Caution Do not mix AC-input and DC-input power supplies in the same Cisco 12012. This configuration is not supported and can cause system damage. |

Table 1 lists the AC-input power supply power specifications.
| Specifications | Nominal Value | Acceptable Value Ranges |
|---|---|---|
| AC input voltage | 200/240 VAC1 | 180 to 264 VAC, single-phase |
| AC input line frequency | 50/60 Hz | 47 to 63 Hz |
| AC input current | 10 amps (A) @200 VAC | - |
| Source AC service requirement | 20 amps (A) North America 16 or 10 amps (A) International | - |
| DC output voltages | +5.2 and -48 VDC2 | +5.35 to +5.0 VDC -52.8 to -43.2 VDC |
If you are upgrading your system with an additional AC-input power supply, make sure that you also ordered the correct AC power cord for your site. Table 2 lists AC power cords and their part numbers.

| AC Power Cord Style | Product Number |
|---|---|
| North America | CAB-GSR12-US= |
| Australia | CAB-GSR12-AU= |
| Europe | CAB-GSR12-EU= |
| Italy | CAB-GSR12-IT= |
| United Kingdom | CAB-GSR12-UK= |
The faceplate of the AC-input power supply has two LEDs: a green AC OK LED and a red output fail LED. (Refer to Figure 4.) These LEDs indicate the following:

Before you begin the replacement procedure, review the safety guidelines in this section to avoid injuring yourself or damaging the equipment. This section also repeats in multiple languages the warnings in this document.
In addition, review the safety warnings listed in the document Regulatory Compliance and Safety Information for the Cisco 12012 Gigabit Switch Router (Document Number 78-4347-xx) that accompanied your Cisco 12012 before installing, configuring, or maintaining the router.
Following are translations for the warning statements used in this document:

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.
The following guidelines will help ensure your safety and protect the equipment. This list is not inclusive of all potentially hazardous situations, so be alert..
The line cards, Gigabit Route Processor (GRP), switch fabric cards, alarm card, blower modules, and redundant power supplies are designed to be removed and replaced while the system is operating without presenting an electrical hazard or damage to the system.
Follow these basic guidelines when working with any electrical equipment:
In addition, use the guidelines that follow when working with any equipment that is disconnected from a power source, but still connected to telephone or network wiring:
Electrostatic discharge damage, which can occur when electronic boards or components are handled improperly, can result in complete or intermittent failures.
Following are guidelines for preventing ESD damage:
![]() | Caution You should periodically check the resistance value of the antistatic strap. The measurement should be between 1 and 10 megohms. |
You need the following tools and parts to install or replace an AC-input power supply:
This section provides two procedures that describe how to remove and how to replace an AC-input power supply in the Cisco 12012. If you are upgrading your system with additional power supplies, go to the section "Replacing or Adding a Power Supply."
![]() | Caution Always wear an antistatic wrist strap to prevent ESD when removing and replacing an AC-input power supply. |
To remove an AC-input power supply, perform the following steps:
Step 1 Attach an antistatic wrist strap to yourself and to one of the two ESD connection sockets located on the front edges of the upper card cage or to bare metal on the frame.
Step 2 If you have not already done so, turn the power supply power switch to the STANDBY position on the power supply you want to remove. (Refer to Figure 5a.)
Step 3 Release the spring clip on the power supply faceplate. (Refer to Figure 5b.)
Step 4 Disconnect the AC power cord from the power supply AC receptacle. (Refer to Figure 5c.)
Step 5 Disconnect the AC power cord from the source AC receptacle. (Refer to Figure 5d.)
Step 6 Loosen the captive screw on the power supply faceplate. (Refer to Figure 5e.)

Step 7 Grasp the power supply handle and pull straight out to disconnect the power supply from the backplane connector. Slide the power supply halfway out of the bay. (Refer to Figure 6.)

![]() | Caution The AC-input power supply weighs 18 lb (8 kg). Use two hands when handling the power supply. |
Step 8 Place your free hand underneath the power supply for support and slide the power supply completely out of the bay.
If you plan to return the old power supply to the factory, repackage it in the shipping container you received with the replacement power supply.
If you are upgrading your system by installing additional power supplies, you can install the power supply without removing power from the system.
![]() | Caution Do not mix AC-input and DC-input power supplies in a Cisco 12012. |
![]() | Caution The AC-input power supply weighs 18 lb (8 kg). Use two hands when handling the power supply. |
Perform the following steps to install a new or replacement AC-input power supply:
Step 1 Attach an antistatic wrist strap to yourself and to one of the two ESD connection sockets located on the front edges of the upper card cage or to bare metal on the frame.
Step 2 Verify that the power switch on the replacement supply is in the STANDBY position. (Refer to Figure 7.)
Step 3 If you are upgrading your Cisco 12012 with an additional AC-input power supply, you must remove the power supply blank covering the empty power supply bay position before installing the power supply. To remove a power supply blank:
(a) Loosen the captive screw on the power supply blank faceplate.
(b) Slide the power supply blank out of the power supply bay.
(c) Retain the power supply blank for possible future use.
![]() | Caution To prevent damaging the power supply backplane connector, do not use excessive force when installing a power supply into the power supply bay. |
Step 4 Using two hands to support and guide the power supply, slide it into the vacant bay position. (Refer to Figure 7.) Push the power supply all the way into the bay until the faceplate makes contact with the front of the bay.

Step 5 Tighten the captive screw on the power supply faceplate. (Refer to Figure 8a.)
Step 6 Connect the AC power cord to the power supply AC receptacle. (Refer to Figure 8b.)
Step 7 Attach the spring clip over the power cord plug. (Refer to Figure 8c.)
Step 8 Connect the other end of the AC power cord to the source AC receptacle. (Refer to Figure 8d.)
Step 9 Turn the power supply power switch to ON (|). (Refer to Figure 8e.)

Step 10 Verify that any empty power supply bay positions have power supply blanks installed.
This completes the AC-input power supply replacement procedure.
Proceed to the following section, "Checking the Installation," to verify the installation.
To complete the installation, observe the LEDs on the faceplate to verify that the power supply is operating properly, then perform the following steps:
Step 1 Check the following components to make sure they are secure:
Step 2 Verify that the Cisco 12012 powers up correctly. Visually check that the green AC OK LED on the power supply faceplate is on. This indicates that the source AC voltage is within the range of 180 to 264 VAC.
If the AC OK LED is off, check for the following:
Step 3 Visually check that the red output fail LED flashes on and off for five seconds, then goes off.
If the power supply fails to operate properly after several attempts to power it up, contact a service representative for assistance.
This equipment has been tested and found to comply with the limits for a Class A digital device, pursuant to part 15 of the FCC rules. These limits are designed to provide reasonable protection against harmful interference when the equipment is operated in a commercial environment. This equipment generates, uses, and can radiate radio-frequency energy and, if not installed and used in accordance with the instruction manual, may cause harmful interference to radio communications. Operation of this equipment in a residential area is likely to cause harmful interference, in which case users will be required to correct the interference at their own expense.
You can determine whether your equipment is causing interference by turning it off. If the interference stops, it was probably caused by the Cisco equipment or one of its peripheral devices. If the equipment causes interference to radio or television reception, try to correct the interference by using one or more of the following measures:
Modifications to this product not authorized by Cisco Systems, Inc. could void the FCC approval and negate your authority to operate the product.
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