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Contents
About This Guide
Audience Assumptions..................................................................................................................................v
Technician Notes...........................................................................................................................................v
Where to Go for Additional Help.................................................................................................................vi
Telephone Numbers...............................................................................................................................vi
Chapter 1
Illustrated Parts Catalog
Chapter 2
Identifying Enclosure and Component Features
Buttons and LEDs on Enclosure Rear....................................................................................................... 2-1
Disk Drives and Drive Blanks................................................................................................................... 2-2
Controller Module ..................................................................................................................................... 2-4
Fan Assembly............................................................................................................................................ 2-5
Power Supply Unit .................................................................................................................................... 2-6
Chapter 3
Removing and Replacing Components
Preventing Electrostatic Damage .............................................................................................................. 3-1
Grounding Methods ............................................................................................................................ 3-1
Replacement Procedures for Hot-Pluggable Components ........................................................................ 3-2
Disk Drive or Drive Blank.................................................................................................................. 3-2
Fan Assembly ..................................................................................................................................... 3-3
Power Supply Unit.............................................................................................................................. 3-3
Controller Module............................................................................................................................... 3-4
Battery Packs and Cache (in the Controller Module) ......................................................................... 3-4
Mounting Bracket Covers................................................................................................................... 3-6
Replacement Procedures for Non-Hot-Pluggable Components ................................................................ 3-6
Midplane Board .................................................................................................................................. 3-7
Backplane Board................................................................................................................................. 3-9
Ribbon Cable ...................................................................................................................................... 3-9
UID Circuit Board ............................................................................................................................ 3-10
VRM Power Supply.......................................................................................................................... 3-10
HP StorageWorks Modular Smart Array 20 Maintenance and Service Guide iii