S440 Hmm En

Hardware Maintenance Manual

ThinkPad S440

Note: Before using this information and the product it supports, be sure to read the general information under Appendix A 'Notices' on page 105.

Second Edition (December 2013)

© Copyright Lenovo 2013.

LIMITED AND RESTRICTED RIGHTS NOTICE: If data or software is delivered pursuant a General Services Administration 'GSA' contract, use, reproduction, or disclosure is subject to restrictions set forth in Contract No. GS-35F-05925.

Contents

Table Caption: This table appears to be an index or table of contents for a technical manual, listing chapters, sections, and their corresponding page numbers, with some columns containing fragmented or incomplete information.

Table Caption: This table appears to be an index or table of contents for a technical manual, listing various topics related to computer hardware, passwords, power management, troubleshooting, and component replacement, along with their corresponding page numbers.

Table Caption: This table lists various laptop components, their associated part numbers or descriptions, and corresponding page numbers for further information.

Table Caption: This table appears to be an index or table of contents, listing various parts of an LCD assembly with corresponding page numbers. It includes entries for different models, some of which have touch panels, and also lists appendix sections for notices and trademarks.

About this manual

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

ThinkPad S440

Machine Type (MT) 20AY and 20BB

Use this manual along with the advanced diagnostic tests to troubleshoot problems.

Important:

This manual is intended only for trained service technicians who are familiar with ThinkPad products. Use this manual along with the advanced diagnostic tests to troubleshoot problems effectively. Before servicing a ThinkPad product, be sure to read all the information under Chapter 1 'Safety information' on page 1 and Chapter 2 'Important service information' on page 21.

Chapter 1. Safety information

This chapter presents following safety information that you need to be familiar with before you service a ThinkPad notebook computer.

• 'General safety' on page 1
• 'Electrical safety' on page 2
• 'Safety inspection guide' on page 3
• 'Handling devices that are sensitive to electrostatic discharge' on page 3
• 'Grounding requirements' on page 4
• 'Safety notices (multilingual translations)' on page 4

General safety

Follow these rules to ensure general safety:

• Observe good housekeeping in the area of the machines during and after maintenance.
• When lifting any heavy object:

1. Ensure that you can stand safely without slipping.
2. Distribute the weight of the object equally between your feet.
3. Use a slow lifting force. Never move suddenly or twist when you attempt to lift.
4. Lift by standing or by pushing up with your leg muscles; this action removes the strain from the muscles in your back. Do not attempt to lift any object that weighs more than 16 kg (35 lb) or that you think is too heavy for you.

• Do not perform any action that causes hazards to the customer, or that makes the equipment unsafe.
• Before you start the machine, ensure that other service technicians and the customer's personnel are not in a hazardous position.
• Place removed covers and other parts in a safe