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ThinkPad T420 - User Manual

ThinkPad T420
186 pages
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Table of Contents

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Summary

Chapter 1. Safety Information

General Safety

General safety rules for working with machines during and after maintenance.

Electrical Safety

Safety rules to observe when working on electrical equipment.

Safety Inspection Guide

Checklist to help identify potentially unsafe conditions in the machine.

Chapter 2. Important Service Information

Strategy for Replacing FRUs

Guidelines and strategy for replacing Field Replaceable Units (FRUs).

Strategy for Replacing a Hard Disk Drive

Procedure and considerations for replacing a hard disk drive.

Important Notice for Replacing a System Board

Key precautions when handling and replacing the system board.

Chapter 3. General Checkout

Chapter 4. Related Service Information

Passwords

Information on Power-On, Hard-Disk, and Supervisor passwords.

Symptom-to-FRU Index

Index that lists symptoms and their likely FRU or action.

Chapter 7. FRU Replacement Notices

Chapter 8. Removing and Replacing a FRU

Chapter 10. Parts List

Overall Parts List

Comprehensive list of all Field Replaceable Units (FRUs) for the computer.

LCD FRUs

List of Field Replaceable Units specific to the LCD module.

Keyboard Parts List

List of keyboard FRUs categorized by language.

AC Power Adapters

Information on available AC power adapter models.

ThinkPad T420 Specifications

General IconGeneral
RAMUp to 16GB DDR3
WirelessWi-Fi 802.11 a/b/g/n, Bluetooth 3.0
ProcessorIntel Core i5 or i7 (2nd generation)
StorageHDD or SSD options
Display14-inch, 1366x768 or 1600x900
GraphicsIntel HD Graphics 3000 or NVIDIA NVS 4200M
Operating SystemWindows 7 Professional
Battery6-cell or 9-cell
Ports2 x USB 2.0, 1 x USB 3.0, VGA, DisplayPort, Ethernet

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