Dell Latitude E7270 Owner's Manual

Notes, cautions, and warnings

NOTE: A NOTE indicates important information that helps you make better use of your product.

CAUTION: A CAUTION indicates either potential damage to hardware or loss of data and tells you how to avoid the problem.

WARNING: A WARNING indicates a potential for property damage, personal injury, or death.

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2018 - 9

Contents

Table Caption: This table outlines the process of working inside a computer, detailing safety instructions and the removal and installation procedures for various components. It covers items such as SIM cards, SD cards, base covers, batteries, SSDs, smart card modules, speakers, coin cell batteries, WLAN cards, and WWAN cards, along with their corresponding page numbers.

Table Caption: This table appears to be an index or table of contents for a service manual, detailing various computer components and their associated page numbers for removal and installation procedures. It covers internal hardware like the WWAN card, memory, heat sink, and system board, as well as external components such as the keyboard and display assembly.

Table Caption: This table is a table of contents, listing various system configuration options, diagnostic features, and technical specifications with corresponding page numbers. It covers a wide range of settings from general and video options to security, performance, power management, and BIOS updates, as well as hardware details like processors, memory, and ports.

Working on your computer

Safety instructions

Use the following safety guidelines to protect your computer from potential damage and to ensure your personal safety. Unless otherwise noted, each procedure included in this document assumes that the following conditions exist:

• You have read the safety information that shipped with your computer.
• A component can be replaced or, if purchased separately, installed by performing the removal procedure in the reverse order.

WARNING: Disconnect all power sources before opening the computer cover or panels. After you finish working inside the computer, replace all covers, panels, and screws before connecting to the power source.

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

CAUTION: Many repairs may only be done by a certified service technician. You should only perform troubleshooting and simple repairs as authorized in your product documentation, or as directed by the online or telephone service and