Dell Latitude 7220 Service Manual

Also see for Latitude 7220: Setup and specifications User guide Quick start Setup and specifications

Contents

Working on your tabletSafety instructionsPrerequisitesUse the following safety guidelines to protect your tablet from potential damage and to ensure your personal safety. Unless otherwisenoted, each procedure in this document assumes that the following conditions exist:• You have read the safety information that shipped with your tablet.• A component can be replaced or, if purchased separately, installed by performing the removal procedure in reverse order.About this taskNOTE: Disconnect all power sources before opening the tablet. After you finish working inside your tablet, replace allthe components and screws before connection the power source.WARNING: Before working inside your tablet, read the safety information that shipped with your tablet. For more safetypractices information, see the Regulatory Compliance HomepageCAUTION: Many repairs may only be done by a certified service technician. You should only perform troubleshooting andsimple repairs as authorized in your product documentation, or as directed by the online or telephone service andsupport team. Damage due to servicing that is not authorized by Dell is not covered by your warranty. Read and followthe safety instructions that came with the product.CAUTION: To avoid electrostatic discharge, ground yourself by using a wrist grounding strap or by periodically touchingan unpainted metal surface simultaneously as touching a connector on the back of the tablet.CAUTION: Handle components and cards with care. Do not touch the components or contacts on a card. Hold a card byits edges or by its metal mounting bracket. Hold a component such as a processor by its edges, not by its pins.CAUTION: When you disconnect a cable, pull on its connector or on its pull-tab, not on the cable itself. Some cableshave connectors with locking tabs; if you are disconnecting this type of cable, press in on the locking tabs before youdisconnect the cable. As you pull connectors apart, keep them evenly aligned to avoid bending any connector pins. Also,before you connect a cable, ensure that both connectors are correctly oriented and aligned.NOTE: The color of your tablet and certain components may appear differently than shown in this document.Before working inside your tabletAbout this taskTo avoid damaging your tablet, perform the following steps before you begin working inside the tablet:Steps1. Ensure that you follow the Safety Instruction.2. Ensure that your work surface is flat and clean to prevent the tablet cover from being scratched.3. Turn off your tablet.4. If the tablet is connected to a docking device (docked) such as the mobile keyboard or a docking station, undock it.5. Disconnect your tablet and all attached devices from their electrical outlets.6. Press and hold the power button while the tablet is unplugged to ground the system board.16 Working on your tablet