E14 Gen 2/R14 Gen 2/E15 Gen 2 Hardware Maintenance Manual

Note: Before using this information and the product it supports, be sure to read the general information under Appendix A 'Notices' on page 97.

Sixth Edition (March 2023)

© Copyright Lenovo 2020, 2023.

LIMITED AND RESTRICTED RIGHTS NOTICE: If data or software is delivered pursuant to a General Services Administration 'GSA' contract, use, reproduction, or disclosure is subject to restrictions set forth in Contract No. GS35F-05925.

Contents

About this manual . . . . . . . . . . . . iii

Chapter 1. Safety information. . . . . . 1

General safety

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Electrical safety .

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Safety inspection guide.

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Handling devices that are sensitive to electrostatic discharge

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Grounding requirements

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Safety notices (multilingual translations)

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Chapter 2. Important service information. . . . . . . . . . . . . . . 19

Strategy for replacing FRUs

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Strategy for replacing a hard disk drive or a solid-state drive .

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Important notice for replacing a system board .

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How to use error message .

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Strategy for replacing FRUs for CTO, special bid model, and standard models.

Product definition

FRU identification

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Chapter 3. General checkout . . . . . 23

What to do first

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Checkout guide .

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Diagnosing problems .

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Quick test programs

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UEFI diagnostic program

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Bootable diagnostic programs

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Power system checkout

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Checking the ac power adapter .

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Checking the built-in battery and operational charging .

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Checking the coin-cell battery

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Chapter 4. Related service information. . . . . . . . . . . . . . . 29

Reset or restore Windows .

Passwords.

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Power-on password

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Hard disk password

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Supervisor password .

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How to remove the power-on password

How to remove the hard disk password.

Power management .

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Sleep mode

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Table Caption: This table appears to be an index or table of contents for a technical manual, likely for a computer or electronic device, detailing topics such as hibernation, error codes and messages, special keys, component locations, and FRU (Field Replaceable Unit) replacement procedures.

Table Caption: This table appears to be an index or parts list for a laptop, detailing various components with associated part numbers and page references.

About this manual

This manual contains service and reference information for the following ThinkPad ® products.

**Table Caption: This table lists specific ThinkPad laptop models and their corresponding machine types (MT) which are