HP Cell Phone storage works modular smart array 20 manual Mounting Bracket Covers

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Removing and Replacing Components

5.Remove the cache from the controller board:

a.Open the ejector levers on each side of the memory module socket (1).

b.Pull the cache board out of the socket (2).

If the cache battery must be replaced:

a.Press down on the plastic retainer tabs and push them through to the other side of the cache board (3).

b. Lift the battery pack off the cache board.

6.Replace whichever battery pack is degraded with the new battery pack.

7.Reinstall the cache and battery packs in the controller module.

IMPORTANT: After installing a new battery pack and replacing the controller module in the enclosure, it might take up to 45 minutes for the battery to recharge and the battery-backed write cache to become fully enabled.

Mounting Bracket Covers

To remove the mounting bracket covers, pull them horizontally straight off the mounting bracket.

To install new covers, push them firmly onto the bracket until they are securely in place.

Replacement Procedures for Non-Hot-Pluggable Components

All non-hot-pluggable components are inside the enclosure. To reach these components: 1. Disconnect the AC power cords from both power supply units on the enclosure.

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HP StorageWorks Modular Smart Array 20 Maintenance and Service Guide

Image 21 Contents
July 2004 First Edition Part Number Page Contents Chapter Specifications About This Guide Audience AssumptionsTechnician Notes Telephone Numbers Where to Go for Additional HelpIllustrated Parts Catalog Enclosure parts Description Spare part number Identifying Enclosure and Component Features Buttons and LEDs on Enclosure RearItem Description Drive in carrier and drive blank Disk Drives and Drive BlanksInterpreting the Drive Status LEDs Online LED Fault/ID LED Meaning Green Amber/blueController module Controller ModuleFan assembly Fan AssemblyPower supply unit Power Supply UnitPreventing Electrostatic Damage Removing and Replacing ComponentsGrounding Methods Hot-pluggable Not hot-pluggableDisk Drive or Drive Blank Replacement Procedures for Hot-Pluggable ComponentsPower Supply Unit Fan AssemblyController Module Battery Packs and Cache in the Controller ModuleRemoving and Replacing Components Mounting Bracket Covers Replacement Procedures for Non-Hot-Pluggable ComponentsMidplane Board Removing and Replacing Components Ribbon Cable Backplane BoardUID Circuit Board VRM Power SupplyPower Specifications SpecificationsEnvironmental Specifications Nominal Value RangeForm Dimensions Weight International cm Physical Specifications