Dell Latitude 2120 Service Manual Working on Your Computer Removing and Replacing Parts System Setup Diagnostics Notes, Cautions, and Warnings NOTE: A NOTE indicates important information that helps you make better use of your computer. CAUTION: A CAUTION indicates potential damage to hardware or loss of data if instructions are not followed. WARNING: A WARNING indicates a potential for property damage, personal injury, or death.
Back to Contents Page Battery Dell Latitude 2120 Service Manual WARNING: Before working inside your computer, read the safety information that shipped with your computer. For additional safety best practices information, see the Regulatory Compliance Homepage at www.dell.com/regulatory_compliance. Removing the Battery NOTE: You may need to install Adobe Flash Player from Adobe.com in order to view the illustrations below. 1. 2. Follow the procedures in Before Working Inside Your Computer.
Replacing the Battery To replace the battery, perform the above steps in reverse order.
Back to Contents Page Keyboard Dell Latitude 2120 Service Manual WARNING: Before working inside your computer, read the safety information that shipped with your computer. For additional safety best practices information, see the Regulatory Compliance Homepage at www.dell.com/regulatory_compliance. Removing the Keyboard NOTE: You may need to install Adobe Flash Player from Adobe.com in order to view the illustrations below. 1. 2. 3. Follow the procedures in Before Working Inside Your Computer.
. Starting in the top left corner of the keyboard, lift the keyboard up, and then flip the keyboard. 6. Disconnect the keyboard data cable and remove the keyboard from the computer.
Replacing the Keyboard To replace the keyboard, perform the above steps in reverse order.
Back to Contents Page Access Panel Dell Latitude 2120 Service Manual WARNING: Before working inside your computer, read the safety information that shipped with your computer. For additional safety best practices information, see the Regulatory Compliance Homepage at www.dell.com/regulatory_compliance. Removing the Access Panel NOTE: You may need to install Adobe Flash Player from Adobe.com in order to view the illustrations below. 1. 2. 3. 4.
6. Starting near the hinges, lift the access panel and remove it from the computer. Replacing the Access Panel To replace the access panel, perform the above steps in reverse order.
Back to Contents Page Memory Modules Dell Latitude 2120 Service Manual WARNING: Before working inside your computer, read the safety information that shipped with your computer. For additional safety best practices information, see the Regulatory Compliance Homepage at www.dell.com/regulatory_compliance. Removing the Memory Modules NOTE: You may need to install Adobe Flash Player from Adobe.com in order to view the illustrations below. 1. 2. 3. 4. 5.
Replacing the Memory Modules To replace the memory modules, insert the memory module in the memory slot at an angle, then press down the memory module to snap the memory module in place.
Back to Contents Page Coin-Cell Battery Dell Latitude 2120 Service Manual WARNING: Before working inside your computer, read the safety information that shipped with your computer. For additional safety best practices information, see the Regulatory Compliance Homepage at www.dell.com/regulatory_compliance. Removing the Coin-Cell Battery NOTE: You may need to install Adobe Flash Player from Adobe.com in order to view the illustrations below. 1. 2. 3. 4. 5.
Replacing the Coin-Cell Battery To replace the coin-cell battery, perform the above steps in reverse order.
Back to Contents Page WLAN Card Dell Latitude 2120 Service Manual WARNING: Before working inside your computer, read the safety information that shipped with your computer. For additional safety best practices information, see the Regulatory Compliance Homepage at www.dell.com/regulatory_compliance. Removing the WLAN Card NOTE: You may need to install Adobe Flash Player from Adobe.com in order to view the illustrations below. 1. 2. 3. 4. 5. Follow the procedures in Before Working Inside Your Computer.
7. Remove the WLAN card from the computer. Replacing the WLAN Card To replace the WLAN card, perform the above steps in reverse order.
Back to Contents Page WWAN Card Dell Latitude 2120 Service Manual WARNING: Before working inside your computer, read the safety information that shipped with your computer. For additional safety best practices information, see the Regulatory Compliance Homepage at www.dell.com/regulatory_compliance. Removing the WWAN Card NOTE: You may need to install Adobe Flash Player from Adobe.com in order to view the illustrations below. 1. 2. 3. 4. 5. Follow the procedures in Before Working Inside Your Computer.
7. Remove the WWAN card from the computer. Replacing the WWAN Card To replace the WWAN card, perform the above steps in reverse order.
Back to Contents Page Hard Drive/Hard-Drive Brackets Dell Latitude 2120 Service Manual WARNING: Before working inside your computer, read the safety information that shipped with your computer. For additional safety best practices information, see the Regulatory Compliance Homepage at www.dell.com/regulatory_compliance. Removing the Hard Drive/Hard-Drive Brackets NOTE: You may need to install Adobe Flash Player from Adobe.com in order to view the illustrations below. 1. 2. 3. 4. 5.
7. Lift the hard drive up to remove it from the computer. 8. Remove the hard-drive bracket screws from both sides of the hard drive.
9. Remove the hard-drive bracket from the hard drive. Replacing the Hard Drive/Hard-Drive Brackets To replace the hard drive/hard-drive brackets, perform the above steps in reverse order.
Back to Contents Page Heatsink Dell Latitude 2120 Service Manual WARNING: Before working inside your computer, read the safety information that shipped with your computer. For additional safety best practices information, see the Regulatory Compliance Homepage at www.dell.com/regulatory_compliance. Removing the Heatsink NOTE: You may need to install Adobe Flash Player from Adobe.com in order to view the illustrations below. 1. 2. 3. 4. 5. Follow the procedures in Before Working Inside Your Computer.
7. Loosen the captive screws on the heat sink. 8. Lift the heat sink up to remove it from the computer.
Replacing the Heatsink To replace the heatsink, perform the above steps in reverse order.
Back to Contents Page DC Power Cable Dell Latitude 2120 Service Manual WARNING: Before working inside your computer, read the safety information that shipped with your computer. For additional safety best practices information, see the Regulatory Compliance Homepage at www.dell.com/regulatory_compliance. Removing the DC Power Cable NOTE: You may need to install Adobe Flash Player from Adobe.com in order to view the illustrations below. 1. 2. 3. 4. 5.
7. Lift up to remove the DC power cable from the computer. Replacing the DC Power Cable To replace the DC power cable, perform the above steps in reverse order.
Back to Contents Page Display Assembly Dell Latitude 2120 Service Manual WARNING: Before working inside your computer, read the safety information that shipped with your computer. For additional safety best practices information, see the Regulatory Compliance Homepage at www.dell.com/regulatory_compliance. Removing the Display Assembly NOTE: You may need to install Adobe Flash Player from Adobe.com in order to view the illustrations below. 1. 2. 3. 4. 5.
7. Disconnect the display data cable from the system board. 8. Remove the screws that secure the display assembly.
9. Remove the display assembly by sliding it toward the base of the computer. Replacing the Display Assembly To replace the display assembly, perform the above steps in reverse order.
Back to Contents Page Display Bezel Dell Latitude 2120 Service Manual WARNING: Before working inside your computer, read the safety information that shipped with your computer. For additional safety best practices information, see the Regulatory Compliance Homepage at www.dell.com/regulatory_compliance. Removing the Display Bezel NOTE: You may need to install Adobe Flash Player from Adobe.com in order to view the illustrations below. 1. 2. 3. 4. 5. 6.
8. Starting at the bottom of the display bezel, disengage the display bezel from the display assembly, and then remove the display bezel. Replacing the Display Bezel To replace the display bezel, perform the above steps in reverse order.
Back to Contents Page Display-Hinge Covers Dell Latitude 2120 Service Manual WARNING: Before working inside your computer, read the safety information that shipped with your computer. For additional safety best practices information, see the Regulatory Compliance Homepage at www.dell.com/regulatory_compliance. Removing the Display-Hinge Covers NOTE: You may need to install Adobe Flash Player from Adobe.com in order to view the illustrations below. 1. 2. 3. 4. 5. 6. 7.
Back to Contents Page Camera Dell Latitude 2120 Service Manual WARNING: Before working inside your computer, read the safety information that shipped with your computer. For additional safety best practices information, see the Regulatory Compliance Homepage at www.dell.com/regulatory_compliance. Removing the Camera NOTE: You may need to install Adobe Flash Player from Adobe.com in order to view the illustrations below. 1. 2. 3. 4. 5. 6. 7. Follow the procedures in Before Working Inside Your Computer.
9. 10. Remove the screws that secure the camera to the display assembly. Lift the camera module up to remove it from the display assembly.
Replacing the Camera To replace the camera, perform the above steps in reverse order.
Back to Contents Page Display Panel/Bracket Dell Latitude 2120 Service Manual WARNING: Before working inside your computer, read the safety information that shipped with your computer. For additional safety best practices information, see the Regulatory Compliance Homepage at www.dell.com/regulatory_compliance. Removing the Display Panel/Bracket NOTE: You may need to install Adobe Flash Player from Adobe.com in order to view the illustrations below. 1. 2. 3. 4. 5. 6. 7.
9. 10. Remove the display data cable from the display panel. Remove the display panel from the display assembly.
11. Remove the screws that secure the display bracket, and then remove the display bracket from the display assembly. Replacing the Display Panel/Bracket To replace the display panel/bracket, perform the above steps in reverse order.
Back to Contents Page Display Cable Dell Latitude 2120 Service Manual WARNING: Before working inside your computer, read the safety information that shipped with your computer. For additional safety best practices information, see the Regulatory Compliance Homepage at www.dell.com/regulatory_compliance. Removing the Display Cable NOTE: You may need to install Adobe Flash Player from Adobe.com in order to view the illustrations below. 1. 2. 3. 4. 5. 6. 7. 8.
10. Remove the display cable from the display assembly. Replacing the Display Cable To replace the display cable, perform the above steps in reverse order.
Back to Contents Page Display Hinges Dell Latitude 2120 Service Manual WARNING: Before working inside your computer, read the safety information that shipped with your computer. For additional safety best practices information, see the Regulatory Compliance Homepage at www.dell.com/regulatory_compliance. Removing the Display Hinges NOTE: You may need to install Adobe Flash Player from Adobe.com in order to view the illustrations below. 1. 2. 3. 4. 5. 6. 7. 8.
Replacing the Display Hinges To replace the display hinges, perform the above steps in reverse order.
Back to Contents Page System Board/Bluetooth Module Dell Latitude 2120 Service Manual WARNING: Before working inside your computer, read the safety information that shipped with your computer. For additional safety best practices information, see the Regulatory Compliance Homepage at www.dell.com/regulatory_compliance. Removing the System Board/Bluetooth Module NOTE: You may need to install Adobe Flash Player from Adobe.com in order to view the illustrations below. 1. 2. 3. 4. 5. 6. 7. 8. 9. 10.
12. Starting from the side where the USB ports are located, lift up the system board and remove the system board. 13. Disconnect the Bluetooth module cable from the system board.
14. Remove the screw that secures the Bluetooth module to the system board. 15. Remove the Bluetooth module from the system board.
Replacing the System Board/Bluetooth Module To replace the system board/Bluetooth module, perform the above steps in reverse order.
Back to Contents Page Secure Digital (SD) Card Dell Latitude 2120 Service Manual WARNING: Before working inside your computer, read the safety information that shipped with your computer. For additional safety best practices information, see the Regulatory Compliance Homepage at www.dell.com/regulatory_compliance. Removing the SD Card NOTE: You may need to install Adobe Flash Player from Adobe.com in order to view the illustrations below. 1. 2.
Replacing the SD Card To replace the SD Card, perform the above steps in reverse order.
Back to Contents Page SIM Card Dell Latitude 2120 Service Manual WARNING: Before working inside your computer, read the safety information that shipped with your computer. For additional safety best practices information, see the Regulatory Compliance Homepage at www.dell.com/regulatory_compliance. Removing the SIM Card NOTE: You may need to install Adobe Flash Player from Adobe.com in order to view the illustrations below. 1. 2. 3. Follow the procedures in Before Working Inside Your Computer.
Replacing the SIM Card To replace the SIM Card, perform the above steps in reverse order.
Back to Contents Page Hard Drive Accelerator Card Dell Latitude 2120 Service Manual WARNING: Before working inside your computer, read the safety information that shipped with your computer. For additional safety best practices information, see the Regulatory Compliance Homepage at www.dell.com/regulatory_compliance. Removing the Hard Drive Accelerator Card NOTE: You may need to install Adobe Flash Player from Adobe.com in order to view the illustrations below. 1. 2. 3. 4. 5.
7. Remove the hard drive accelerator card metal bracket from the card. Replacing the Hard Drive Accelerator Card To replace the hard drive accelerator card, perform the above steps in reverse order.
Back to Contents Page System Setup Dell Latitude 2120 Service Manual Overview Entering System Setup Boot Menu Navigation Keystrokes System Setup Menu Options Overview Use System Setup to: l l l Change the system configuration information after you add, change, or remove any hardware in your computer Set or change a user-selectable option such as the user password Read the current amount of memory or set the type of hard drive installed Before you use System Setup, it is recommended that you write down t
l System Information l Battery Information ¡ Memory Technology ¡ DIMM A Size Processor Information ¡ Processor Type ¡ Core Count ¡ Processor ID ¡ Current Clock Speed Device Information ¡ Primary Hard Drive ¡ Video Controller ¡ Video BIOS Version ¡ Video Memory ¡ Panel Type ¡ Native Resolution ¡ Audio Controller ¡ Wi-Fi Device ¡ Cellular Device ¡ Bluetooth Device ¡ Integrated NIC MAC Displays the status of the battery and the type of AC adapter connected to the computer.
NOTE: Successful password changes take effect immediately. Internal HDD Password This field lets you set, change, or delete the password on the system's internal hard disk drive (HDD). Successful changes take place immediately and require a system restart. The HDD password travels with the hard drive, so the HDD is protected even when installed in another system. Allows you to bypass the system and internal hard drive password prompts when your computer restarts or resumes from standby.
Allows you to enable or disable the Fast Boot feature. The following options are available: l Fast Boot l l Minimal — Boot quickly unless the BIOS has been updated, memory changed, or the previous POST did not complete. Thorough — Do not skip any steps in the boot process. Auto — Allow the operating system to control this setting (this works only when the operating system supports Simple Boot Flag).
Back to Contents Page Diagnostics Dell Latitude 2120 Service Manual Device Status Lights Battery Status Lights Battery Charge and Health Keyboard Status Lights LED Error Codes Device Status Lights Turns on when you turn on the computer and blinks when the computer is in a power management mode. Turns on when the computer reads or writes data. Turns on steadily or blinks to indicate battery charge status. Turns on when wireless networking is enabled.
LCD panel error OFF-FLASH-OFF 1. 2. 3. Reseat the LCD cable. Replace the LCD panel. Replace the video card/system board. 1. 2. Install compatible memory modules. If two modules are installed, remove one and test. Try the other module in the same slot and test. Test the other slot with both modules. Replace the memory. Replace the system board. Memory compatibility error 3. 4. ON-FLASH-ON 1. 2. Memory is detected but has errors 3. 4. Reseat the memory.
Back to Contents Page Adding and Replacing Parts Dell Latitude 2120 Service Manual Secure Digital Card Battery SIM Card Keyboard Access Panel Memory Coin-Cell Battery WLAN Card WWAN Card Hard Drive Accelerator Card Heatsink Hard Drive/Hard-Drive Bracket DC Power Cable Display Assembly Display-Hinge Covers Display Bezel Display/Display Brackets Camera Display Hinge Display Cable System Board/Bluetooth Module Back to Contents Page
Back to Contents Page Specifications System Information Processor Memory Video Audio Communications Ports and Connectors Drives Display Keyboard Touchpad Battery AC Adapter Environmental Physical NOTE: Offerings may vary by region. For more information regarding the configuration of your computer, click Start® Help and Support and select the option to view information about your computer.
Hard drive 2.5" SATA 2 HDD Display Type WSVGA (1024 x 600 pixels) and HD (1366 x 768 pixels), high definition, anti glare (AG), white lightemitting diode (WLED) Size 10.1 inches Active area (X/Y) WSVGA 222.72 mm x 125.28 mm (8.76 inches x 4.93 inches) HD 222.73 mm x 125.22 mm (8.76 inches x 4.93 inches) Dimensions Height 235.00 mm (9.2 inches) Width 143.00 mm (5.6 inches) Diagonal 256.00 mm (10.
Storage Coin-cell battery –40 °C to ~65 °C (–40 °F to ~149 °F) 3 V CR2032 lithium coin cell AC Adapter Input voltage 100 VAC–240 VAC Input current (maximum) 1.5 A Input frequency 50 Hz–60 Hz Output power 65 W Output current 4.34 A (maximum at 4-second pulse) 3.34 A (continuous) Depth 66.00 mm (2.59 inches) Height 16.00 mm (0.63 inches) Width 127.00 mm (4.
Working on Your Computer Dell™ Latitude™ 2120 Service Manual Before Working Inside Your Computer Recommended Tools Turning Off Your Computer After Working Inside Your Computer Before Working Inside Your Computer Use the following safety guidelines to help protect your computer from potential damage and to help to ensure your personal safety.
l In Windows® 7: Click Start l Click Start l , then click Shut Down. In Windows Vista®: , then click the arrow in the lower-right corner of the Start menu as shown below, and then click Shut Down. In Windows® XP: Click Start →Turn Off Computer →Turn Off. The computer turns off after the operating system shutdown process is complete. 2. Ensure that the computer and all attached devices are turned off.