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Cisco 7000 and 7507 LED Board MAS-7KLED Replacement Instructions Manual

Cisco systems cisco 7000 and cisco 7507 led board replacement instructions
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Doc. No.
78-1060-02
Cisco 7000 and Cisco 7507
LED Board Replacement Instructions
Product Number: MAS-7KLED
Customer Order Number: DOC-781060=
This document contains instructions for replacing the top and bottom front chassis panels and the
LED board in the Cisco 7000 and Cisco 7507.
Note
throughout this document, both chassis are referred to as the chassis, with differences clearly noted.
The top and bottom front chassis panels comprise plastic bezels on a metal frame and should be
replaced if they become warped or broken. The LED board, which contains the light-emitting diodes
(LEDs) for the three front-panel system status indicators (normal, upper power, and lower power), is
mounted inside the front of the chassis.
The sections in this document include the following:
•
•
•
•
•
Caution
from a Cisco 7000 and replace them with DC-input power supplies, you might need to replace the
LED board in the chassis, if it was shipped before November 1, 1994. In this earlier chassis, the LED
circuitry will not recognize and indicate the presence of the new DC-input power supplies. If
replacement is necessary, use this document to replace the LED board. (This document is also
available on UniverCD.)
If the chassis was shipped after November 1, 1994, no LED board replacement is required.
Copyright © 1995
Cisco Systems, Inc.
All rights reserved.
The LED board installation and functionality are identical for both chassis; therefore,
Product Overview, page 2
Prerequisites, page 5
Removing and Replacing the Front Chassis Panels, page 7
Removing and Replacing the LED Board, page 12
Cisco Information Online, page 20
The following applies to Cisco 7000 chassis only: if you remove AC-input power supplies
1

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Summary of Contents for Cisco Cisco 7000 and Cisco 7507 LED Board MAS-7KLED

  • Page 1 LED board. (This document is also available on UniverCD.) If the chassis was shipped after November 1, 1994, no LED board replacement is required. Copyright © 1995 Cisco Systems, Inc. All rights reserved.

  • Page 2: Product Overview

    Product Overview Product Overview This section describes the top and bottom front chassis panels and the LED board. Top and Bottom Front Chassis Panels The top and bottom front chassis panels each comprise a plastic injected-molded bezel on a metal frame.
  • Page 3 LED Board Location and Description The LED board contains the three LEDs that report system software (normal) and power supply (upper power and lower power) status through semiopaque panels on the front of the chassis. Figure 2 shows the three system status indicators. Figure 2 System Status Indicators (Front-Panel LEDs) The LED board is mounted to the backplane on a horizontal plane near the top of the chassis interior...
  • Page 4 Product Overview Two pins in the brackets and a metal spring that butts up against the ceiling of the chassis keep the board in place. (See Figure 3.) You must remove the top front chassis panel to access the LED board. Carefully follow the top front chassis panel removal instructions to avoid damaging the LEDs or the LED board.
  • Page 5 Prerequisites Before you begin an installation, review the safety guidelines in this section to avoid injuring yourself or damaging the equipment. Warning This warning symbol means danger. You are in a situation that could cause bodily injury. Before you work on any equipment, be aware of the hazards involved with electrical circuitry and be familiar with standard practices for preventing accidents.

  • Page 6: Safety Guidelines

    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. • Always turn all power supplies off and disconnect power cords before removing the top front chassis panel.
  • Page 7 • 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;...

  • Page 8: Removing The Panels

    Removing and Replacing the Front Chassis Panels Before performing any of the following procedures, ensure that power is removed from Warning 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.
  • Page 9 Figure 6 Removing the Top Front Panel With your other hand, grasp the front of the panel by inserting your fingers into the opening Step 5 on the underside of the bezel. (See Figure 6a.) While pushing slightly against the top of the panel to constrain it, pivot the bottom edge of Step 6 the frame outward about two inches.
  • Page 10 Removing and Replacing the Front Chassis Panels While holding the panel in place, place one palm against the top front center of the panel Step 6 to brace it, and place the other against the lip near the bottom edge of the frame. (See Figure 7d.) Push the panel upward and back into the chassis opening until the tabs on the front sides of Step 7...
  • Page 11 Figure 7 Replacing the Top Front Panel Removing and Replacing the Front Chassis Panels Guide tab slides up into slot in chassis Cisco 7000 and Cisco 7507 LED Board Replacement Instructions...

  • Page 12: Removing The Led Board

    Removing and Replacing the LED Board Removing and Replacing the LED Board The LED board slides horizontally into two mounting brackets near the top of the chassis interior and connects directly to the backplane. You must turn all system power off and remove the top and bottom front chassis panels to access the chassis interior.
  • Page 13 Keep the spring depressed as you pull the board straight out at a 90-degree orientation to Step 7 the backplane. Place the board in an antistatic bag if returning it to the factory. Step 8 Installing a New LED Board To install the new LED board, perform the following steps: Ensure that the power supplies are still turned OFF and disconnected from the power Step 1...

  • Page 14: Installation Checkout

    Removing and Replacing the LED Board Installation Checkout Perform the following steps to verify that the new LED board functions correctly. The following warning is for units with DC-input power supplies. Note After wiring the DC power supply, remove the tape from the circuit breaker switch handle Warning and reinstate power by moving the handle of the circuit breaker to the ON position.

  • Page 15: Translated Safety Warnings

    Translated Safety Warnings Following are translations of the safety warnings that appear throughout this publication: Lightning Activity Warning Do not work on the system or connect or disconnect cables during periods of lightning Warning activity. Waarschuwing werken of kabels aan te sluiten of te ontkoppelen. Älä...

  • Page 16: Power Supply Disconnection Warning

    Translated Safety Warnings Før kabinettet åpnes, skal kablene for telenettet kobles fra for å unngå å komme i kontakt Advarsel med spenningen i telenettet. Antes de abrir o chassis, desligue os cabos da rede telefónica para evitar contacto com a Aviso tensão da respectiva rede.

  • Page 17: Electric Shock Warning

    Electric Shock Warning This unit might have more than one power cord. To reduce the risk of electric shock, Warning disconnect the two power supply cords before servicing the unit. Waarschuwing schok te verminderen, dient u de stekkers van de twee netsnoeren uit het stopcontact te halen voordat u het toestel een servicebeurt geeft.
  • Page 18 Translated Safety Warnings Avant de pratiquer l'une quelconque des procédures ci-dessous, vérifier que le circuit en Attention courant continu n'est plus sous tension. Pour en être sûr, localiser le disjoncteur situé sur le panneau de service du circuit en courant continu, placer le disjoncteur en position fermée (OFF) et, à l'aide d'un ruban adhésif, bloquer la poignée du disjoncteur en position OFF.

  • Page 19: Installation Warning

    Nach Verdrahtung des Gleichstrom-Netzgeräts entfernen Sie das Klebeband vom Warnung Schaltergriff des Unterbrechers und schalten den Strom erneut ein, indem Sie den Griff des Unterbrechers auf EIN stellen. Avvertenza dall’interruttore automatico e ristabilire l’alimentazione spostando all'interruttore automatico in posizione ON. Etter at likestrømsenheten er tilkoblet, fjernes teipen fra håndtaket på...

  • Page 20: Cisco Information Online

    VirtualStream, WNIC, Workgroup Director, Workgroup Stack, and XCI are trademarks, Access by Cisco and Bringing the power of internetworking to everyone are service marks, and Cisco, Cisco Systems, the Cisco Systems logo, EtherSwitch, IGRP, Kalpana, LightStream, and UniverCD are registered trademarks of Cisco Systems, Inc. All other trademarks, service marks, registered trademarks, or registered service marks mentioned in this document are the property of their respective owners.

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