Dell Vostro 2521 Owner's Manual

Dell Vostro 2521Owner's ManualRegulatory Model: P27FRegulatory Type: P27F001

Installing the Battery1. Slide the battery into its slot until it clicks into place.2. Follow the procedures in After Working Inside Your Computer.Rem

3. Install the battery.4. Follow the procedures in After Working Inside Your Computer.Removing the Memory Module1. Follow the procedures in Before Wor

4. Slide the hard drive in the direction shown and lift the tab to remove it from the computer.5. Remove the screw that secures the hard-drive caddy t

Installing the Hard-Drive Assembly1. Align the hard drive on the hard-drive bracket and snap it into place.2. Tighten the screws to secure the hard dr

5. Remove the optical-drive bracket from the optical-drive assembly.6. Pry the optical-drive bezel and remove it from the optical-drive assembly.Insta

5. Disconnect the keyboard cable from the connector on the system board and lift the keyboard off the palmrest assembly.Installing the Keyboard1. Conn

Removing the Wireless Mini-Card1. Follow the procedures in Before Working Inside Your Computer.2. Remove:a) batteryb) access panelc) memory moduled) o

4. Flip the computer and disconnect the touchpad cable and power-button cables from the system board.5. Remove the screws that secure the palmrest to

Installing the Palmrest1. Align and press the plamrest on the computer until it snap into place at all sides.2. Connect the touchpad cable and the pow

Installing the Input/Output (I/O) Board1. Place the I/O board in its slot and snap it in place.2. Tighten the screw to secure the I/O board to the com

Notes, Cautions, and WarningsNOTE: A NOTE indicates important information that helps you make better use of your computer.CAUTION: A CAUTION indicates

c) I/O board cable6. Remove the screw that secures the system board to the computer.7. Lift the system board from the computer.Installing the System B

6. Install:a) wireless mini-cardb) palmrestc) keyboardd) optical-drive assemblye) SD cardf) hard-drive assemblyg) memory moduleh) access paneli) batte

3. Follow the procedures in After Working Inside Your Computer.Removing the Heatsink1. Follow the procedures in Before Working Inside Your Computer.2.

Removing the System Fan1. Follow the procedures in Before Working Inside Your Computer.2. Remove:a) batteryb) access panelc) memory moduled) hard-driv

i) battery5. Follow the procedures in After Working Inside Your Computer.Removing the Speakers1. Follow the procedures in Before Working Inside Your C

Installing the Speakers1. Place the speaker assembly in its slot and route the cables through the channels.2. Replace the LED silicon tubes to the com

4. Move the LVDS and camera cable aside and remove the screws that secure the display assembly to the computer and lift the display assembly off the c

c) memory moduled) hard-drive assemblye) optical-drive assemblyf) keyboardg) palmresth) display assembly3. Press the hinge cover on the side. Lift and

e) hard-drive assemblyf) memory moduleg) access panelh) battery4. Follow the procedures in After Working Inside Your Computer.Removing the Display Hin

f) hard-drive assemblyg) memory moduleh) access paneli) battery4. Follow the procedures in After Working Inside Your Computer.Removing the Display Pan

ContentsNotes, Cautions, and Warnings...21 Working on

Installing the Display Panel1. Connect the display cable to display panel.2. Affix the tape to secure the display cable.3. Place the display panel on

3. Remove the screw, peel the tape and disconnect the camera cable from the connector and remove the camera module from the display assembly.Installin

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3System SetupSystem Setup enables you to manage your computer hardware and specify BIOS‐level options. From the System Setup, you can:• Change the NVR

Keys Navigation<Enter> Allows you to select a value in the selected field (if applicable) or follow the link in the field.Spacebar Expands or co

Option DescriptionL3 Cache Displays the processor L3 cache size.Fixed HDD Displays the model number and capacity of the hard drive.SATA ODD Displays t

Option DescriptionMiscellaneous Devices These fields let you enable or disable various on-board devices.External USB Ports Enables or disables externa

Table 5. Boot OptionsOption DescriptionSecure Boot Allows you to boot securely. (Default: Disabled)Load Legacy Option ROM Allows you to load legacy op

Password Type DescriptionSystem password Password that you must enter to log on to your system.Setup password Password that you must enter to access a

1. In the System BIOS or System Setup screen, select System Security and press <Enter>.The System Security screen is displayed.2. In the System

Removing the Speakers...

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4DiagnosticsIf you experience a problem with your computer, run the ePSA diagnostics before contacting Dell for technical assistance. The purpose of r

• Light off — Battery in full charge mode with AC adapter present.• White light on — Battery in charge mode with AC adapter present.42

5TroubleshootingEnhanced Pre-Boot System Assessment (ePSA) DiagnosticsThe ePSA diagnostics (also known as system diagnostics) performs a complete chec

Turns on when wireless networking is enabled.If the computer is connected to an electrical outlet, the battery light operates as follows:Table 7. Batt

Code Cause and Troubleshooting StepsMemory failure5 Real-time clock power failCMOS battery failure6 Video BIOS test failureVideo card failure7 CPU - c

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6Technical SpecificationsNOTE: Offerings may vary by region. For more information regarding the configuration of your computer, click Start (Start ic

Feature DescriptionStereo conversion 24-bit (analog to digital and digital to analog)Interface Intel HDA busSpeakers 2 x 2 WVolume controls program me

Feature DescriptionNOTE: The powered USB 3.0 connector also supports Microsoft Kernel Debugging.Media card reader one 8-in-1 slotTable 17. DisplayFeat

1Working on Your ComputerBefore Working Inside Your ComputerUse the following safety guidelines to help protect your computer from potential damage an

Feature DescriptionHeight 12.50 mm (0.49 inch)Width 66.00 mm (2.60 inches)Depth 291.70 mm (11.48 inches)Weight 0.30 kg (0.66 lb)Life span 600 discharg

Table 23. EnvironmentalFeature DescriptionTemperature:Operating 0 °C to 35 °C (32 °F to 95 °F)Storage –40 °C to 65 °C (–40 °F to 149 °F)Relative humid

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7Contacting DellNOTE: If you do not have an active Internet connection, you can find contact information on your purchase invoice, packing slip, bill,

6. Close the display and turn the computer upside-down on a flat work surface.NOTE: To avoid damaging the system board, you must remove the main batte

After Working Inside Your ComputerAfter you complete any replacement procedure, ensure you connect any external devices, cards, and cables before turn

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2Removing and Installing ComponentsThis section provides detailed information on how to remove or install the components from your computer.Recommende