6 Removing and Replacing Components
This chapter provides a detailed description of the server customer replaceable unit (CRU)
removal and replacement procedures. The sections contained in this chapter are:
Customer Replaceable Units (CRUs)
The following section lists the different types of CRUs the server supports.
Hot-plug CRUs
A CRU is defined as hot-plug if it can be removed from the chassis while the system remains
operational, but requires software intervention prior to removing the CRU.
The following are remove and replace procedures for hot-plug CRUs:
• Removing and Replacing a Disk Drive
• Removing and Replacing a Slimline DVD Drive
• Removing and Replacing a Dual Slimline DVD Carrier
• Removing and Replacing a PCI/PCI-X Card
Hot-Swap CRUs
A CRU is hot-swap if it can be removed from the chassis while the server remains operational
and requires no software intervention before it is removed.
The following list identifies procedures for removing and replacing the hot-swap CRUs in the
server:
• Removing and Replacing a Front Smart Fan Assembly
• Removing and Replacing a Rear Smart Fan Assembly
• Removing and Replacing a PCI Smart Fan Assembly
• Removing and Replacing a Bulk Power Supply
• Removing and Replacing the PCI Power Supply
• Removing and Replacing the System Clock
Other CRUs
To remove and replace the CRUs that are neither hot-plug nor hot-swap, you must shut down
HP-UX in the nPartition where the CRU resides and turn off power to the CRU before removing
it. Refer to “Powering Off Hardware Components and Powering On the Server” (page 142) and
Chapter 4 “Operating System Boot and Shutdown” for complete instructions.
Procedures for these CRUs include:
• Removing and Replacing a Half-Height DVD/DAT Drive
• Removing and Replacing PCA Front Panel Board
• Removing and Replacing a PCI-X Power Supply
Customer Replaceable Units (CRUs) 141
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