HP dx2420 manual 1Removing the Computer Access Panel

Page 15

Removing the Computer Access Panel

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.

5.Loosen the screw (1) that secures the access panel to the computer chassis.

6.Slide the access panel back (2) about 1.3 cm (1/2 inch), then lift it off the unit.

NOTE: You may want to lay the computer on its side to install internal parts. Be sure the side with the access panel is facing up.

Figure 2-1Removing the Computer Access Panel

ENWW	Removing the Computer Access Panel 9

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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 BezelInstalling Additional Memory DIMMsDDR2-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 Installing a Security Lock External Security DevicesCable Lock HP Business PC Security Lock PadlockEnww Enww Electrostatic Discharge Preventing Electrostatic DamageGrounding Methods Computer Operating Guidelines and Routine Care Shipping Preparation Optical Drive PrecautionsCleaning SafetyIndex Enww

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