HP dc7700 manual Battery Replacement

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B Battery Replacement

The battery that comes with the computer provides power to the real-time clock. When replacing the battery, use a battery equivalent to the battery originally installed in the computer. The computer comes with a 3-volt lithium coin cell battery.

WARNING! The computer contains an internal lithium manganese dioxide battery. There is a risk of fire and burns if the battery is not handled properly. To reduce the risk of personal injury:

Do not attempt to recharge the battery.

Do not expose to temperatures higher than 60°C (140ºF).

Do not disassemble, crush, puncture, short external contacts, or dispose of in fire or water.

Replace the battery only with the HP spare designated for this product.

CAUTION Before replacing the battery, it is important to back up the computer CMOS settings. When the battery is removed or replaced, the CMOS settings will be cleared. Refer to the Computer Setup (F10) Utility Guide on the Documentation and Diagnostics CD for information on backing up the CMOS settings.

Static electricity can damage the electronic components of the computer or optional equipment. Before beginning these procedures, ensure that you are discharged of static electricity by briefly touching a grounded metal object.

NOTE The lifetime of the lithium battery can be extended by plugging the computer into a live AC wall socket. The lithium battery is only used when the computer is NOT connected to AC power.

HP encourages customers to recycle used electronic hardware, HP original print cartridges, and rechargeable batteries. For more information about recycling programs, go to http://www.hp.com/ recycle.

1.Remove/disengage any security devices that prohibit opening the computer.

2.Remove all removable media, such as diskettes or compact discs, from the computer.

3.Turn off the computer properly through the operating system, then turn off any external devices.

4.Disconnect the power cord from the power outlet and disconnect any external devices.

CAUTION Regardless of the power-on state, voltage is always present on the system board as long as the system is plugged into an active AC outlet. You must disconnect the power cord to avoid damage to the internal components of the computer.

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 Cleaning Optical Drive PrecautionsSafety Shipping PreparationKeyboard IndexEnww
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