read the installation instructions before connecting the system to the power source. statement 1004

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

    this equipment must be grounded. never defeat the ground conductor or operate the equipment in the absence of a suitably installed ground conductor.contact the appropriate electrical inspection authority or an electrician if you are uncertain that suitable grounding is available. statement 1024

    before working on equipment that is connected to power lines, remove jewelry (including rings, necklaces, and watches). metal objects will heat up when connected to power and ground and can cause serious burns or weld the metal object to the terminals. statement 43

    ultimate disposal of this product should be handled according to all national laws and regulations. statement 1040

    this chapter tells you how to remove and replace catalyst 4500 series

    field-replaceable units (frus). the information is presented in these sections:

    1 removing and replacing the power supply.

    2 removing and replacing the chassis fan assembly.

    3 replacing backplane modules on a catalyst 4507r or 4510r switch.

    for instructions on installing and replacing supervisor engine and switching modules, refer to the catalyst 4500 series module installation guide.