HP dc7700 manual Electrostatic Discharge, Preventing Electrostatic Damage, Grounding Methods

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D Electrostatic Discharge

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

Preventing Electrostatic Damage

To prevent electrostatic damage, observe the following precautions:

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:

Use a wrist strap connected by a ground cord to a grounded workstation or computer chassis. Wrist straps are flexible straps with a minimum of 1 megohm +/- 10 percent resistance in the ground cords. To provide proper ground, wear the strap snug against the skin.

Use heelstraps, toestraps, or bootstraps at standing workstations. Wear the straps on both feet when standing on conductive floors or dissipating floor mats.

Use conductive field service tools.

Use a portable field service kit with a folding static-dissipating work mat.

If you do not have any of the suggested equipment for proper grounding, contact an HP authorized dealer, reseller, or service provider.

NOTE For more information on static electricity, contact an HP authorized dealer, reseller, or service provider.

ENWW

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Contents Hardware Reference Guide-dc7700 Series Ultra-Slim Desktop Page About This Book About This Book Table of contents Grounding Methods Standard Configuration Features Product FeaturesFront Panel Components Drive configuration may vary by model2Rear Panel Components Rear Panel Components3Keyboard Components KeyboardUsing the Windows Logo Key Serial Number Location Changing from Desktop to Tower ConfigurationChanging from Desktop to Tower Configuration Enww Serviceability Features Hardware UpgradesRemoving the Computer Access Panel 2Releasing the Front Bezel Removing the Front Bezel AssemblyEnww 6Aligning the Front Bezel Assembly Connect the fan and speaker cables to the system board Rotating the Power Supply DIMMs Installing Additional MemoryDDR2-SDRAM DIMMs Description Socket Color Populating Dimm SocketsInstalling DIMMs Enww Replacing an Expansion Card Bracket Replacing an Expansion Card Bracket Upgrading the Hard Drive Upgrading the Hard Drive Enww Removing the Existing Optical Drive Replacing the Optical Drive17Removing the Optical Drive Hardware Upgrades Preparing the New Optical Drive Installing the New Optical Drive Approximate Weight SpecificationsAppendix a Specifications Battery Replacement Type Figure B-2Removing and Replacing a Coin Cell Battery Type Enww Security Lock Provisions Installing a Security LockCable Lock Padlock Preventing Electrostatic Damage Electrostatic DischargeGrounding Methods Appendix D Electrostatic Discharge Computer Operating Guidelines and RoutineCare Shipping Preparation Optical Drive PrecautionsCleaning SafetyKeyboard IndexEnww