Dell Latitude 9420 User Manual

Latitude 9420
Service Manual
Regulatory Model: P141G/P142G
Regulatory Type: P141G001/P142G001
April 2021
Rev. A00

Dell Latitude 9420 Specifications

General

RAM	Up to 32GB LPDDR4x
Graphics	Intel Iris Xe Graphics
Processor	11th Gen Intel Core i5/i7
Storage	Up to 1TB PCIe NVMe SSD
Operating System	Windows 10 Pro, Windows 11 Pro
Battery	4-Cell 60 Whr ExpressCharge™ Battery
Ports	2 x Thunderbolt 4, USB 3.2 Gen 1, HDMI 2.0, MicroSD card reader, Audio jack
Wireless	Wi-Fi 6 (802.11ax), Bluetooth 5.1
Camera	720p IR camera
Audio	Stereo speakers
Security	Fingerprint reader, IR camera for Windows Hello

Summary

Working inside your computer

Before working inside your computer

Safety precautions

Essential safety measures to follow before performing any disassembly or reassembly procedures on the computer.

Electrostatic discharge—ESD protection

Information and methods to prevent damage to electronic components from electrostatic discharge.

ESD field service kit

Removing and installing components

Solid-state drive

WWAN Card

Heat sink

Display assembly

Detailed procedure for removing and installing the entire display assembly.

Battery

Step-by-step guide for removing and installing the computer's battery.

System board

Comprehensive guide for removing and installing the main system board.

Software

Downloading the drivers

Instructions on how to download and install necessary drivers and software updates for the computer.

System setup

Boot Sequence

Updating the BIOS in Windows

Guide for updating the system BIOS from within the Windows operating system.

System and setup password

Troubleshooting

Dell SupportAssist Pre-boot System Performance Check diagnostics

Running the SupportAssist Pre-Boot System Performance Check

Diagnostic error messages

List and description of diagnostic error messages and their potential causes.

System error messages

List and description of system error messages encountered during boot.