C H A P T E R5-1Cisco 6400 Hardware Installation and Maintenance GuideOL-2133-025Maintaining the Cisco 6400This chapter provides maintenance information for the Cisco 6400 carrier-class broadband aggregator.All cards, modules, and components support online insertion and removal (often referred to ashot-swapping). Hot-swapping allows you to remove, replace, and rearrange cards without turning off thesystem power. When the system detects that a card or module is added or removed, it automatically runsdiagnostic and discovery routines, acknowledges the presence or absence of the card or module, andresumes system operation without any operator intervention.Note If you are a network administrator and need personal technical assistance with a Cisco product thatis under warranty or covered by a maintenance contract, refer to the “Obtaining TechnicalAssistance” section on page xiv.Note The illustrations in this guide depict the original Cisco 6400 chassis. Your chassis may appear or lookslightly different.ContentsThis document includes the following sections:• Tools and Equipment Required, page 5-2• General Safety Precautions and Maintenance Guidelines, page 5-2• Cisco 6400 System Components—Front View, page 5-5• Replacing the Front Cover, page 5-5• Powering Down the System, page 5-8• Backing Up the PCMCIA Card, page 5-9• Maintaining the Air Filter, page 5-9• Replacing an NSP Module, page 5-11• Replacing an NRP Module, page 5-18• Installing or Replacing a Half-Height Node Line Card, page 5-28• Installing or Replacing a Full-Height Node Line Card, page 5-36• Replacing a DC Power Entry Module, page 5-41