HP Cell Phone storage works modular smart array 20 manual Removing and Replacing Components

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Removing and Replacing Components

Some enclosure components are hot-pluggable, while others should be replaced only after you have disconnected the enclosure from the AC power source.

Table 3-1: Classification of Components

Hot-pluggable	Not hot-pluggable
Mounting bracket covers (bezel ears)	Midplane board
Hard drive or drive blank	Backplane board
Power supply unit	UID circuit board
Fan assembly	VRM power supply
Controller module

Preventing Electrostatic Damage

A discharge of static electricity from a finger or other conductor might damage system boards or other static-sensitive devices. This type of damage can reduce the life expectancy of the device.

To prevent electrostatic damage when setting up the system or handling parts:

•Avoid hand contact by transporting and storing products in static-safe containers.

•Keep electrostatic-sensitive parts in their containers until they arrive at static-free workstations.

•Place parts on a grounded surface before removing them from their containers.

•Avoid touching pins, leads, or circuitry.

•Always be properly grounded when touching a static-sensitive component or assembly.

Grounding Methods

There are several methods for grounding. Use one or more of the following methods when handling or installing electrostatic-sensitive parts:

HP StorageWorks Modular Smart Array 20 Maintenance and Service Guide 3-1