HP dc7800 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

Preventing Electrostatic Damage 39

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Contents Hardware Reference Guide dc7800 Series Ultra- Slim Desktop Page About This Book Iv About This Book Table of contents Index Standard Configuration Features Product FeaturesFront Panel Components Drive configuration may vary by model2Rear Panel Components Rear Panel Components3Keyboard Components Keyboard4Windows Logo Key Functions Using the Windows Logo KeySerial Number Location 5Serial Number and Product ID Location Product FeaturesChanging from Desktop to Tower Configuration Enww Serviceability Features Hardware UpgradesRemoving the Computer Access Panel 2Lifting the Fan Shroud Removing and Replacing the Front BezelEnww 5Removing a Bezel Blank Removing a Bezel BlankInstalling Additional Memory SODIMMsDDR2-SDRAM SODIMMs 6SODIMM Socket Locations Populating Sodimm SocketsInstalling SODIMMs Enww Enww 9Unlocking the Hard Drive Carrier Upgrading the Hard Drive11Removing the Hard Drive Guide Screw Hardware Upgrades 13Transferring the Guide Screws Enww Enww Removing the Existing Optical Drive Replacing the Optical Drive17Removing the Optical Drive Preparing the New Optical Drive 18Aligning the Release Latch Hardware Upgrades20Connecting the Cable and Locking the Drive in Place Installing the New Optical DriveEnww 22Removing a Port Cover Installing and Removing a Port CoverTable A-1Specifications SpecificationsRated Input Current maximum1 Battery Replacement Type Enww Installing a Security Lock Security Lock ProvisionsCable Lock Padlock HP Business PC Security Lock Enww Electrostatic Discharge Preventing Electrostatic DamageGrounding Methods Computer Operating Guidelines and RoutineCare Cleaning Optical Drive PrecautionsSafety Shipping PreparationKeyboard IndexScrews
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