HP dx2420 manual Type

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NOTE: On some computer models, it may be necessary to remove an internal component to gain access to the battery.

7.Depending on the type of battery holder on the system board, complete the following instructions to replace the battery.

Type 1

a.Lift the battery out of its holder.

Figure B-1Removing a Coin Cell Battery (Type 1)

b.Slide the replacement battery into position, positive side up. The battery holder automatically secures the battery in the proper position.

Type 2

a.To release the battery from its holder, squeeze the metal clamp that extends above one edge of the battery. When the battery pops up, lift it out (1).

b.To insert the new battery, slide one edge of the replacement battery under the holder’s lip with the positive side up. Push the other edge down until the clamp snaps over the other edge of the battery (2).

Figure B-2Removing and Replacing a Coin Cell Battery (Type 2)

Type 3

a.Pull back on the clip (1) that is holding the battery in place, and remove the battery (2).

ENWW

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Contents Hardware Reference Guide dx2420 Microtower Model Hardware Reference Guide About This Book Iv About This Book Table of contents Appendix D Electrostatic Discharge Standard Configuration Features Product Features1Front Panel Components Front Panel Components2Media Card Reader Components Media Card Reader Components3Rear Panel Components Rear Panel Components4Keyboard Components Keyboard5Windows Logo Key Functions Using the Windows Logo Key6Serial Number and Product ID Location Serial Number LocationHardware Upgrades 1Removing the Computer Access Panel Removing the Computer Access Panel2Replacing the Computer Access Panel Hardware Upgrades Replacing the Computer Access Panel3Removing the Front Bezel Removing the Front BezelRemoving Bezel Blanks 5Replacing the Front Bezel Replacing the Front BezelDIMMs Installing Additional MemoryDDR2-SDRAM DIMMs 1DIMM Socket Locations Populating Dimm SocketsInstalling DIMMs Enww 2Expansion Slot Locations Removing or Installing an Expansion CardRemoving or Installing an Expansion Card 11Removing a Standard PCI Expansion Card Hardware Upgrades Enww Enww 15Drive Positions Drive Positions16Extra Drive Retainer Screws Location Hardware Upgrades Installing Additional DrivesInstalling Additional Drives 3System Board Drive Connections System Board Drive ConnectionsRemoving an Optical Drive 19Removing the Optical Drive Hardware Upgrades 20Installing the Optical Drive Installing an Optical Drive into the 5.25-inch Drive BayRemoving an External 3.5-inch Drive Enww 24Removing a 3.5-inch Device Media Card Reader Shown Installing a Drive into the 3.5-inch External Drive BayEnww Removing an Internal 3.5-inch Hard Drive Enww 30Removing the Hard Drive Hardware Upgrades 31Installing the Hard Drive in the Drive Cage Installing an Internal 3.5-inch Hard Drive33Installing the Hard Drive Cage Hardware Upgrades Enww Table A-1Specifications SpecificationsRated Input Current maximum Battery Replacement Type Enww External Security Devices Installing a Security LockCable Lock HP Business PC Security Lock PadlockEnww Enww Preventing Electrostatic Damage Electrostatic DischargeGrounding Methods Computer Operating Guidelines and Routine Care Cleaning Optical Drive PrecautionsSafety Shipping PreparationIndex Enww

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