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Dell Latitude 3140 User Manual

Dell Latitude 3140
113 pages
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Latitude 3140/Latitude 3140 2-in-1
Service Manual
Regulatory Model: P32T/P33T
Regulatory Type: P32T002/P33T002
June 2023
Rev. A01

Table of Contents

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Dell Latitude 3140 Specifications

General IconGeneral
GraphicsIntel UHD Graphics
ProcessorIntel Celeron N4500, Intel Pentium Silver N6000
Display11.6-inch HD (1366 x 768) Anti-Glare
RAM4GB, 8GB DDR4
Operating SystemWindows 10 Pro, Windows 11 Pro, Ubuntu
Battery3-cell 42Whr
WirelessWi-Fi 6, Bluetooth 5.1
PortsHDMI 1.4
SecurityTPM 2.0
Storage128GB eMMC, 256GB SSD

Summary

Working Inside Your Computer

Safety Instructions

General safety guidelines for working inside the computer, including ESD precautions.

Electrostatic Discharge (ESD) Protection

Measures to prevent damage from static electricity when handling components.

Service Mode Procedures

Steps to enter and exit Service Mode for safe component replacement.

BitLocker Drive Encryption Considerations

Important considerations regarding BitLocker when updating BIOS or replacing hardware.

Removing and Installing Components

Recommended Tools and Screw List

List of tools and screw types required for component removal and installation.

Major Components Overview

Diagram and listing of the main internal components of the laptop.

Palm-rest and Keyboard Replacement

Detailed steps for removing and installing the palm-rest and keyboard assembly.

Storage Drive (M.2 SSD) Replacement

Procedure for removing and installing the M.2 Solid-State Drive.

Battery Replacement

Guidelines for replacing the 3-cell or 4-cell rechargeable Li-ion battery.

System Board Replacement

Steps for removing and installing the computer's system board.

Display Assembly Replacement

Procedure for removing and installing the laptop's display assembly.

System Setup

Entering BIOS and Navigation

How to enter BIOS setup and use navigation keys for system configuration.

Boot Sequence and One-Time Boot Menu

Configure boot order and access the one-time boot menu using F12.

System Setup Options: Overview and Boot Configuration

Details system info, processor, devices, and boot configuration settings.

System Setup Options: Power and Security

Configuration for power management, security features, and passwords.

System Setup Options: Update and Recovery

BIOS updates, OS recovery, and system management configurations.

Assigning System and Setup Passwords

Steps to create and manage system and BIOS setup passwords.

Troubleshooting

Handling Swollen Li-ion Batteries

Precautions and procedures for safely handling swollen laptop batteries.

Dell SupportAssist Pre-boot Diagnostics

Using embedded diagnostics to check hardware health and identify issues.

Built-in Self-Test (BIST) and Diagnostic Lights

How to run BIST tests and interpret diagnostic LED patterns.

System Error Messages and Recovery

Common system errors, OS recovery, and RTC reset procedures.

BIOS Update and Wi-Fi Troubleshooting

Guide to update BIOS and perform a Wi-Fi power cycle.

Drain Residual Flea Power (Hard Reset)

Procedure to drain static electricity for troubleshooting power-on issues.

Getting Help and Contacting Dell

Self-Help Resources

Accessing online resources like Dell website, app, and knowledge base.

Contacting Dell Support

Information on how to contact Dell for sales, technical support, and service.

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