Dell Latitude 120L Service Manual

Also see for Inspiron 120L: Quick reference guide Quick reference guide Quick reference guide Specifications

Back to Contents PageBefore You BeginDell™ Latitude™ 120L Service ManualRecommended ToolsTurning Off Your ComputerBefore Working Inside Your ComputerComputer OrientationScrew IdentificationThis section provides procedures for removing and installing the components in your computer. Unless otherwise noted, each procedure assumes that thefollowing conditions exist:l You have performed the steps in Turning Off Your Computer and Before Working Inside Your Computer.l You have followed the safety information in the Dell™ Product Information Guide.l A component can be replaced or—if purchased separately—installed by performing the removal procedure in reverse order.Recommended ToolsThe procedures in this document may require the following tools:l Small flat-blade screwdriverl Phillips screwdriverl Small plastic scribel Hex nut driverl Flash BIOS-update program CDTurning Off Your Computer1. Shut down the operating system:Save and close any open files, exit any open programs, click Start® Shut Down® Shut down® OK.The computer turns off after the operating system shutdown process finishes.2. Ensure that the computer and any attached devices are turned off. If your computer and attached devices do not automatically turn off when you shutdown your operating system, press and hold the power button for 4 seconds.Before Working Inside Your ComputerUse the following safety guidelines to help protect your computer from potential damage and to help ensure your own personal safety.1. Ensure that the work surface is flat and clean to prevent the computer cover from being scratched.2. Turn off your computer. See Turning Off Your Computer.NOTICE: To avoid losing data, save and close any open files and exit any open programs before you turn off your computer.CAUTION: Before you begin any of the procedures in this section, follow the safety instructions in the Product Information Guide.CAUTION: Handle components and cards with care. Do not touch the components or contacts on a card. Hold a card by its edges or by its metalmounting bracket. Hold a component such as a processor by its edges, not by its pins.NOTICE: Only a certified service technician should perform repairs on your computer. Damage due to servicing that is not authorized by Dell is notcovered by your warranty.NOTICE: When you disconnect a cable, pull on its connector or on its strain-relief loop, not on the cable itself. Some cables have a connector withlocking tabs; if you are disconnecting this type of cable, press in on the locking tabs before you disconnect the cable. As you pull connectors apart, keepthem evenly aligned to avoid bending any connector pins. Also, before you connect a cable, ensure that both connectors are correctly oriented andaligned.NOTICE: To prevent damage to the computer, perform the following steps before you begin working inside the computer.