HP 680689-001 manual Grounding guidelines, Drive handling

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Drive handling

CAUTION: Drives are fragile components that must be handled with care. To prevent damage to the computer, damage to a drive, or loss of information, observe these precautions:

Before removing or inserting a hard drive, shut down the computer. If you are unsure whether the computer is off or in Hibernation, turn the computer on, and then shut it down through the operating system.

Before handling a drive, be sure that you are discharged of static electricity. While handling a drive, avoid touching the connector.

Before removing a diskette drive or optical drive, be sure that a diskette or disc is not in the drive and be sure that the optical drive tray is closed.

Handle drives on surfaces covered with at least one inch of shock-proof foam. Avoid dropping drives from any height onto any surface.

After removing a hard drive, an optical drive, or a diskette drive, place it in a static-proof bag.

Avoid exposing an internal hard drive to products that have magnetic fields, such as monitors or speakers.

Avoid exposing a drive to temperature extremes or liquids.

If a drive must be mailed, place the drive in a bubble pack mailer or other suitable form of protective packaging and label the package “FRAGILE.”

Grounding guidelines

Electrostatic discharge damage

Electronic components are sensitive to electrostatic discharge (ESD). Circuitry design and structure determine the degree of sensitivity. Networks built into many integrated circuits provide some protection, but in many cases, ESD contains enough power to alter device parameters or melt silicon junctions.

A discharge of static electricity from a finger or other conductor can destroy static-sensitive devices or microcircuitry. Even if the spark is neither felt nor heard, damage may have occurred.

An electronic device exposed to ESD may not be affected at all and can work perfectly throughout a normal cycle. Or the device may function normally for a while, then degrade in the internal layers, reducing its life expectancy.

CAUTION: To prevent damage to the computer when you are removing or installing internal components, observe these precautions:

Keep components in their electrostatic-safe containers until you are ready to install them.

Before touching an electronic component, discharge static electricity by using the guidelines described in this section.

Avoid touching pins, leads, and circuitry. Handle electronic components as little as possible. If you remove a component, place it in an electrostatic-safe container.

the following table shows how humidity affects the electrostatic voltage levels generated by different activities.

CAUTION: A product can be degraded by as little as 700 V.

32 Chapter 4 Removal and replacement procedures

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Contents HP Pavilion g7 Notebook PC First Edition November Document Part Number Safety warning notice Iv Safety warning notice Table of contents Setup Utility Bios and System Diagnostics 103 Viii Product description ProcessorsSwitchable discrete graphics Category Description Computer modelsAMD processor Intel processor ChipsetAMD processor Intel processor Switchable discrete graphics Dual graphicsPanel MemoryHard drives Optical driveAudio and video EthernetExternal media CardPower AMD processor Intel processor PortsKeyboard/pointing DevicesServiceability End-user replaceable parts External component identification TopButton Component DescriptionKeys Esc keyLights TouchPad Display FrontYouCam Component Description Speakers Produce soundLeft side Environmental NoticesRight side Bottom Illustrated parts catalog Service tagDescription Function Computer major components Computer major componentsPower button board includes cable ComponentPower connector cable TouchPad button board includes cableBattery Component Spare part numberWlan module Cable Kit Display assembly subcomponents Display Screw Kit not illustrated Mass storage devices Hard Drive Hardware Kit , includesMiscellaneous parts Sequential part number listingComponent Spare part number HP Smart AC adapter Screw KitSequential part number listing Illustrated parts catalog BACO, includes replacement thermal material Illustrated parts catalog Removal and replacement procedures Preliminary replacement requirementsService considerations Tools requiredGrounding guidelines Drive handlingTypical electrostatic voltage levels Event 10% 40% 55%Packaging and transporting guidelines Equipment guidelines Material Use Voltage protection levelComponent replacement procedures Service tagComputer feet BatteryDescription Spare part number Page Optical drive Page Hard drive or SSD Page RTC battery Memory module Wlan module Page Keyboard Page Page Top cover Page Page Power button board TouchPad button board TouchPad LED board Page Speakers LED board Description Spare part number LED board 640215-001USB board Power connector cable System board Description Spare part number AMD processorPage Optical drive cable Page Fan and heat sink Discrete video memoryPage Page Page Page Page Page Processor Page Page Display assembly Page Page Page Page Page Page Setup Utility Bios and System Diagnostics Using Setup UtilityStarting Setup Utility Changing the language of Setup UtilityNavigating and selecting in Setup Utility Displaying system informationExiting Setup Utility Restoring factory settings in Setup UtilityUpdating the Bios Determining the Bios version Using System Diagnostics Specifications Computer specifications43.9 cm 17.3 in display specifications Hard drive specifications SSD specifications CharacteristicsEnvironmental specifications Physical specificationsRandom access time Transfer modeApplicable disc Cache buffer Data transfer rateBD-ROM, BD-ROM-DL, BD-R, BD-R-DL, BD-RE, BD-RE-DL, DVD-ROM Backup and recovery RestoreCreating restore media Performing a system restore Select Start All Programs Recovery Manager Recovery ManagerRestoring using the restore media Changing the computer boot orderBacking up and recovering your information Using Windows Backup and Restore Using Windows system restore pointsCreate a system restore point Power cord set requirements Requirements for all countriesRequirements for specific countries and regions Country/region Accredited agency Applicable note numberPower cord set requirements Recycling Index Jacks