Replace Chassis Components


Note


The images in this chapter are only for representation purposes, unless specified otherwise. The chassis' actual appearance and size may vary.

Caution


Whenever you replace any card, you must always ensure to secure the ejector thumbscrews properly.

Replace Modular Port Adapters

The following sections describe how to remove or install an MPA:

Remove a Modular Port Adapter

Before you begin:

Use one of the following procedures to perform graceful shutdown of the card:

  • unscrew the captive screws, pull the release latch, and open ejector lever to trigger auto-shutdown of the card, and then verify that the Status LED is in Off state (The LED status transitions from Green to Red and Off which takes up to 5 seconds).

  • use the shutdown location location command in admin EXEC mode to shutdown the card. Then use the show platform command to verify that the Status LED is in Off state.

To remove an MPA, perform the following steps:

  1. Perform the graceful shutdown of the MPA. Run the shutdown location location command in admin EXEC mode, which gracefully shuts down MPA to prevent any of the file systems from being corrupted.

  2. Verify that the MPA Status LED for the slot that you specified turns off. Also, you can verify that the card is in the powered off state by running the show platform command.

  3. To remove the MPA from the chassis, loosen the captive screws (marked as 1 in the image) on the MPA.

  4. Press the tab down (marked as 2 in the image).


    Note


    If you are removing the MPA without shutting it down gracefully, verify that the Status LED is in an Off state before proceeding to the next step.


  5. Pull the ejector lever away from the MPA (marked as 3 in the image).

  6. Grasp the MPA and pull the MPA from the chassis (marked as 4 in the image). (You have already disconnected the cables from the MPA.

    1

    Rotate the captive screw to loosen the MPA.

    2

    Press the tab down.

    3

    Pull the ejector lever away from the MPA.

    Figure 1. Cisco 8712-MOD-M Router - Remove Modular Port Adapter
  7. Proceed with installing an MPA.

Install a Modular Port Adapter

This section provides step-by-step instructions for installing a modular port adapter (MPA) in a Cisco 8700 Series router.

To install an MPA, perform the following steps:

  1. To insert the MPA, locate the guide rails inside the chassis that hold the MPA in place.

  2. Carefully slide the MPA all the way in the chassis until the MPA is firmly seated in the MPA interface connector. When fully seated, the MPA might be slightly behind the faceplate.


    Note


    The MPA will slide easily into the slot if it is properly aligned on the tracks. If the MPA does not slide easily, do NOT force it. Remove the MPA and reposition it, paying close attention to engaging it on the tracks. Push the MPA inside the slot until you hear a click. Continue to push the MPA further until you hear a second click. The MPA is fully seated only after the second click is heard.
  3. After the MPA is properly seated, push the ejector lever towards the chassis (marked as 2 in the image).


    Note


    If the ejector is not closed within 60 seconds and remains open for an extended period, the router will automatically shut down the MPA due to the open ejector status. When this occurs, the LED status will change from Amber to Off as the MPA shuts down. After the MPA has shut down, you can safely remove it from the slot, reinsert it, and lock the ejector. The MPA will then return to its standard workflow and become operational again. Once the MPA is operational, the LED status will change to Green.


  4. Pull the tab up (marked as 3 in the image).

  5. Use a number 2 Phillips screwdriver to tighten the captive screws (marked as 4 in the image) on the MPA.

    Figure 2. Cisco 8712-MOD-M Router - Install Modular Port Adapter

    1

    Slide the back end of the MPA into the open MPA slot.

    2

    Pull the ejector lever towards the MPA.

    3

    Pull the tab up.

    4 Rotate the captive screw to tighten the MPA.

    Note


    Do not over-torque the MPA captive screws when installing the MPA. Tighten the captive screws on the MPA to a torque of 9.7 in-lbs (1.09 N-m).

Replace Blank Cards

The following sections describe how to remove or install a blank card:

Remove a Blank Card

To remove a blank card, perform the following steps:

  1. To remove the blank card from the chassis, loosen the captive screws (marked as 1 in the image) on the blank card.

  2. Secure the handle on the faceplate and then extract the blank card (marked as 2 in the image).

    1

    Rotate the captive screw to loosen the blank card.

    2

    Secure the handle on the faceplate and then extract the blank card..

    Figure 3. Cisco 8712-MOD-M Router - Remove Blank Card
  3. Proceed with installing an MPA.

Install a Blank Card

The empty MPA slots in the 8712-MOD-M router disrupt the airflow balance. To maintain the airflow balance, insert blank cards into the empty MPA slots. To install a blank card, perform the following steps:

  1. To insert the blank, slide the back end of the blank card into the open MPA slot.

  2. After the blank card is properly seated, rotate the captive screw to tighten the blank card. (marked as 2 in the image).

    Figure 4. Cisco 8712-MOD-M Router - Install Blank Card

    1

    Slide the back end of the blank card into the open MPA slot.

    2

    Rotate the captive screw to tighten the blank card.

    Note


    Do not over-torque the blank card captive screws when installing the blank card. Tighten the captive screws on the blank card to a torque of 9.7 in-lbs (1.09 N-m).

Replace Fan Modules

The fan module is designed to be removed and replaced while the system is operating without presenting an electrical hazard or damage to the system. Please keep the replacement fan modules ready prior to attempting this task.

The router supports the following types of fan modules:

  • Cisco 8711-32FH-M Router

    • port-side intake airflow - FAN-1RU-PI-V2

    • port-side exhaust airflow - FAN-1RU-PE-V2

  • Cisco 8712-MOD-M Router

    • port-side intake airflow - FAN-PI-V3

    • port-side exhaust airflow - FAN-PE-V3


Note


The airflow direction must be the same for all power supply and fan modules in the chassis. Depending upon the required airflow direction, you can change the fan type. You must then also change the power supply.

Procedure


Step 1

To remove a fan module, follow these steps:

  1. Press two latches on the fan module and grasp the handle of fan module.

    Figure 5. Cisco 8711-32FH-M Router — Remove Fans

    Figure 6. Cisco 8712-MOD-M Router — Remove Fans

    1

    Latched fan module

    2

    Fan latch

  2. As you simultaneously press the latches pull the fan module fully out of the chassis.

Step 2

To install a fan module, follow these steps:

  1. Hold the fan module with the LED at the top.

  2. Align the fan module to the open fan tray slot in the chassis, and press the module all the way into the slot until the left and right latches click and are locked on the chassis.

    Note

     
    If the fan module does not go all the way into the slot, do not force it. Remove the fan module and verify that it is the correct type for your router and in the correct orientation. To verify the status of fans and the speed, use the show environment fan command.
  3. If the chassis is powered on, listen for the sound of the fans in operation. You should immediately hear them in operation. If you do not hear them, ensure that the fan module is inserted completely in the chassis.

    Note

     

    During the fan module replacement, the other fans adjust their speed to allow for proper initialization of the new module. When you insert a new fan module, the fans may run at lower or higher speeds for a few minutes.

  4. Verify that the fan module LED turns green. If the LED is not green, one or more fans are faulty. If this situation occurs, contact your customer service representative for replacement parts.


Replace Power Supply


Note


We recommend that you occupy both the power supply slots of the fixed port routers with power supplies. In case a power module fails, it is recommended to retain the failed power module in its slot until it is replaced with a new power module. This recommendation ensures that the system airflow is not impacted adversely, which may then result in the overheating of the router and its components.

When there are two PSUs in the router, use the following steps to replace the PSUs (AC to DC or vice-versa. Routers can operate normally only with the same type of PSU in both the power slots. During replacement of PSU from one type to another, the router exhibits unexpected behaviour and the Cisco IOS XR software raises the PID mismatch alarm due to the presence of different types of PSUs. You must therefore replace the PSUs in both slots with the same type.

Power down the fixed configuration Power Distribution Unit (PDU) before removing the PDU from the chassis.

Procedure


Step 1

Ensure that both the PSUs are powered off.

Step 2

If the power supply is connected to an AC or DC circuit, shut off the circuit at the circuit breaker or PDU.

Step 3

Disconnect the power cable of the PSU that must be replaced.

Note

 
To remove the Saf-D-Grid power cord (AC or HVDC) or the low voltage DC power cord from the power supply, press the latch before pulling the power cord out.

Step 4

Press the tab inward to unlatch the PSU, and pull the handle to remove the PSU.

Step 5

Insert the new PSU.

Note

 
If the PSU does not go all the way into the slot, do not force it. Remove the PSU and verify that it is the correct type for your router and in the correct orientation.

Step 6

Connect the PSU cable. If the power supply is connected to an AC or DC circuit, turn on the circuit at the circuit breaker or PDU.source. Wait till the PSU LED color turns green. After replacing the PSU, verify the power using the show environment power command.

Step 7

Repeat steps 1 through 6 to replace the PSU in the second slot.

Figure 7. Cisco 8711-32FH Router — Remove Power Supply

Figure 8. Cisco 8712-MOD-M Router — Remove Power Supply

1

Remove power supply