Dell Inspiron 14 5402 Service Manual

Inspiron 14 5402 Service 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.

Contents

Table Caption: This table of contents outlines a user manual for a Dell Inspiron 14 5402 laptop, detailing instructions for safely working inside the computer and procedures for removing and installing various internal components. It covers general safety, ESD protection, and specific component replacement like the base cover, battery, memory, SSDs, WLAN card, fan, and coin-cell battery.

Table Caption: This table serves as a table of contents, listing various hardware components and system setup procedures along with their corresponding page numbers for a technical manual. It details removal and installation instructions for parts like the coin-cell battery, display assembly, and system board, as well as sections on BIOS setup, password management, and BIOS updates.

Table Caption: This table of contents outlines troubleshooting procedures for Dell computers, including handling swollen batteries, running diagnostics like BIST and SupportAssist, recovering the operating system, and managing Intel Optane memory. It also covers system diagnostic lights, BIOS updates with BitLocker, and power-related troubleshooting steps.

Working inside your computer

Before working inside your computer

About this task

• NOTE: The images in this document may differ from your computer depending on the configuration you ordered.

Steps

1. Save and close all open files and exit all open applications.
2. Shut down your computer. Click Start > Power > Shut down .
3. NOTE: If you are using a different operating system, see the documentation of your operating system for shut-down instructions.
4. Disconnect your computer and all attached devices from their electrical outlets.
5. Disconnect all attached network devices and peripherals, such as keyboard, mouse, and monitor from your computer.
6. CAUTION: To disconnect a network cable, first unplug the cable from your computer and then unplug the cable from the network device.
7. Remove any media card and optical disc from your computer, if applicable.

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 you have read the safety information that shipped with your computer.

• WARNING: Before working inside your computer, read the safety information that is shipped with your computer. For more safety best practices, see the Regulatory Compliance home page at www.dell.com/ regulatory_compliance.
• WARNING: Disconnect your computer from 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 your computer to an electrical outlet.
• CAUTION: To avoid damaging the computer, ensure that the work surface is flat, dry, and clean.
• CAUTION: To avoid damaging the components and cards, handle them by their edges, and avoid touching the pins and the contacts.
• CAUTION: You should only perform troubleshooting and repairs as authorized or