Removing and Replacing FRUs


Warning

Only trained and qualified personnel should be allowed to install, replace, or service this equipment. Statement 1030

Online Insertion and Removal

The online insertion and removal (OIR) feature allows you to remove and replace modules while the system is online. You can shut down the modules before removal and restart them after insertion, without causing other software or interfaces to shut down.


Note
Do not remove or install more than one module at a time. After you remove or install a module, check the module LEDs before continuing.

When a module is removed or installed, the switch stops processing traffic for the module and scans the system for a configuration change. Each interface type is verified against the system configuration, and then the system runs diagnostics on the new module. There is no disruption of normal operation during module insertion or removal.

The switch can bring up only an identical replacement module online. To support the OIR of an identical module, the module configuration is not removed from the running-config file when you remove a module.

If the replacement module is different from the removed module, you must configure it before the switch can bring it online.

Layer 2 MAC addresses are stored in an EEPROM, which allows modules to be replaced online without requiring the system to update switching tables and data structures. Regardless of the types of modules installed, the Layer 2 MAC addresses do not change unless you replace the supervisor engine. If you do replace the supervisor engine, the Layer 2 addresses of all the ports change to those specified in the address allocator on the new supervisor engine.

Removing and Installing Power Supplies

This section describes how to remove and install PSMs.

Note

  • The PSMs installed in the switch chassis should be AC input only.

  • The PSM is designed to be removed and replaced while the system is operating without presenting an electrical hazard or damage to the system.


Caution

Use both hands to install and remove power supplies.

Related Concepts
Power Supply Module
Power Entry Module
Related References
Power Supply Module LEDs
3000 W Power Supply AC Power Cords

Installing AC Power Supplies

To install an AC input PSM, follow these steps:


Warning

High leakage current-earth connection essential before connecting to system power supply. Statement 342

Before You Begin

  • For ground connection instructions, see Establishing System Ground

  • You may require a flat-blade or Number 2 Phillips-head screwdriver to tighten the screw on the PSM.

Procedure
    Step 1   Remove the blank cover from the power supply bay if there is one installed. Grasp the two retaining clips with your thumb and forefinger and squeeze to detatch the blank cover from the power supply bay.
    Figure 1. Removing the Power Supply Blank

    1

    System On/ Off switch

    3

    Retaining clips on the blank cover.

    2

    Power supply blank

    		   
    Step 2   Remove the PSM from its shipping packaging.
    Step 3   Slide the PSM into the power supply bay. Make sure that the power supply is fully seated in the bay.
    Tip   

    The slot inside the power supply bay ensures that PSM is installed in only one direction.

    Figure 2. Installing the Power Supply Module

    1

    Slot in the power supply bay

    3

    Latch

    2

    Nub on the PSM that slides into the slot

    4

    Captive installation screw
    Step 4   Rotate the latch up and tighten the captive installation screw to lock the latch in place.
    Step 5   Plug the AC power cord (connected to a power source on one end) into the corresponding power entry module (PEM). For example, if you have installed the PSM in bay 1, plug the power cord into AC1.

    For a list of supported AC power cords for your particular AC input power supply, see 3000 W Power Supply AC Power Cords.

    Step 6   Tighten the screw on the cable clamp next to the PEM. This ensures that the power cord is not accidentally pulled out. See callout (5) in Figure 1

    Removing AC Power Supplies

    Each power supply module has a power hold-up time of 20 milliseconds at 100 percent load and fully supports OIR. To remove an AC-input power supply, follow these steps:


    Warning

    Hazardous voltage or energy is present on the backplane when the system is operating. Use caution when servicing. Statement 1034

    Before You Begin

    You may require a flat-blade or Number 2 Phillips-head screwdriver to loosen the captive installation screw.

    Procedure
      Step 1   Loosen the captive installation screw on the power supply module and push the latch down.
      Figure 3. PSM and PEM

      1

      Dual variable speed fans

      4

      Captive installation screw

      2

      PSM LEDs

      5

      Cable clamp next to the PEM

      3

      Latch

      		   
      Step 2   Grasp the power supply latch and pull to slide the power supply part of the way out of the chassis. Place your other hand underneath the power supply, and slide the power supply clear out of the chassis.
      Step 3   If the power supply bay is to remain empty:
      1. Install a blank (Cisco part number C6800-PS-CVR=), which is a part of the accessory kit, over the opening.
      2. Optional: Remove the corresponding power cord by loosening the cable clamp and then detaching the power cord.

      Removing and Installing the Fan Tray

      This section describes how to remove and install the fan tray.


      Note

      The fan tray is designed to be removed and installed while the system is operating (powered on) without presenting an electrical hazard or damage to the system.

      Related Concepts
      Fan Tray
      Air Flow
      Related References
      Fan Tray LED

      Installing the Fan Tray

      To install the new fan tray, perform these steps:

      Procedure
        Step 1   Remove the fan tray from its packaging.
        Step 2   Hold the fan tray handle with one hand. Place your other hand underneath the fan tray. (The correct position involves the fan tray LEDs being on top).
        Step 3   Place the fan module into the front of the fan tray bay so that it rests on the chassis, lift the fan module up slightly to align it with the top and bottom of the bay, and then push the fan module into the chassis until it sits in the backplane. The fan module willl snap in.
        What to Do Next

        Check that the new fan assembly is installed correctly. For more information, see Checking Fan Tray Installation.

        Checking Fan Tray Installation

        To verify that the new fan assembly is installed correctly, perform these steps:

        Procedure
          Step 1   If the switch is powered on, listen for the fans; you should immediately hear them operating. If you do not hear them, ensure that the fan module is inserted completely and correctly in the bay and the outside surface of the fan module is flush with the outside surface of the chassis.
          Step 2   Verify that the fan status LED is green. If the LED is red, one or more fans are faulty.
          Step 3   If, after several attempts, the fans do not operate, or if you experience trouble with the installation, contact a Cisco customer service representative for assistance.

          Removing the Fan Tray

          To remove the fan tray, perform these steps:

          Procedure
            Step 1   Locate the fan tray in the chassis.
            Step 2   Grasp and simultaneously push both spring latches with your thumb in a left to right direction. Slide the fan tray half-way out of the bay. Rock it gently, if necessary, to unseat the power connector from the backplane.
            Figure 4. Fan Tray Location and Spring Latch Operation



            1

            Spring latches and close-up view of spring latch operation

            3

            Fan tray LED

            2

            Fan tray handle

            Step 3   Grasp the handle to pull the fan assembly clear of the chassis, and set it aside.
            Warning   

            The fans might still be turning when you remove the fan assembly from the chassis. Keep fingers, screwdrivers, and other objects away from the openings in the fan assembly’s housing. Statement 263

            Removing and Installing the Power Supply Converter

            This section describes how to remove and install PSCs.

            Related Concepts
            Power Supply Converter
            Related References
            Power Supply Converter LEDs

            Installing the Power Supply Converter

            To install the PSC, perform these steps:

            Before You Begin

            • Ensure that the system (earth) ground connection has been made. For ground connection instructions, see Establishing System Ground

            • You may require a flat-blade or Number 2 Phillips-head screwdriver to tighten the screw on the PSC.

            Procedure
              Step 1   Remove the PSC from its packaging.
              Step 2   Slide the PSC into the PSC bay. Ensure that the power supply is fully seated in the bay.
              Step 3   Insert the mounting screw and tighten it to fully seat the connectors.

              If the system is powered on and PSC is installed properly, the PSC STATUS LED is green.

              Figure 5. Installing the PSC

              1

              Power rail connectors

              2

              Mounting screws (one for each PSC)

              Removing the Power Supply Converter

              To remove the PSC, perform these steps:

              Before You Begin

              • Ensure that the system (earth) ground connection has been made. For ground connection instructions, see Establishing System Ground.

              • You may require a flat-blade or Number 2 Phillips-head screwdriver to loosen the screw on the PSC.

              Procedure
                Step 1   Loosen the mounting screw on the PSC. This detaches the connectors.
                Step 2   Slide the PSC out of the bay.