Lenovo ThinkCentre M73 10B0 User Manual

Replacingtheinternalspeaker
Attention:Donotopenyourcomputerorattemptanyrepairbeforereadingandunderstandingthe
“Importantsafetyinformation”onpage1.
Thissectionprovidesinstructionsonhowtoreplacetheinternalspeaker.
Toreplacetheinternalspeaker,dothefollowing:
1.Removeallmediafromthedrivesandturnoffallattacheddevicesandthecomputer.Then,disconnect
allpowercordsfromelectricaloutletsanddisconnectallcablesthatareconnectedtothecomputer.
2.Removethecomputercover.See“Removingthecomputercover”onpage207.
3.Locatetheinternalspeakerinthecomputer.See“LocatingmajorFRUsandCRUs”onpage85.
4.Removetheharddiskdriveassembly.See“Installingorremovingtheharddiskdriveassembly”on
page209.
5.Disconnecttheinternalspeakercablefromthesystemboard.
6.Releasetheinternalspeakercablefromtheretainingcliponthesideofthethermalmodulebracket.
Figure193.Releasingtheinternalspeakercable
Chapter11.ReplacingFRUs(machinetypes:10AX,10AY,10DK,10DL,10DM,and10DN)221

Lenovo ThinkCentre M73 10B0 Specifications

General

Storage	500GB HDD
Graphics	Intel HD Graphics
Operating System	Windows 7
Form Factor	Tower, Small Form Factor (SFF)
Power Supply	240W

Summary

About This Manual

Important Safety Information

Read all caution and danger statements before performing any instructions.

Safety Information

General Safety Precautions

Follow rules for general safety, including housekeeping and lifting objects.

Electrical Safety Guidelines

Guidelines for working safely with electrical components and avoiding shock.

ESD Handling Procedures

Precautions to prevent static-electricity damage to computer components.

General Information

Computer Specifications

Physical dimensions, weight, environmental, and electrical input specifications.

Lenovo Software Overview

Details on pre-installed Lenovo programs and their functions.

Lenovo Support Web Site

Information on accessing technical support and resources online.

General Checkout Procedures

Problem Determination Tips

Information to assist in identifying hardware/software issues before service.

Troubleshooting and Diagnostics

Basic Troubleshooting Steps

Initial steps to resolve common computer issues like no power or blank screen.

Troubleshooting Procedure Guide

A systematic approach to diagnosing and resolving computer problems.

Diagnostic Tools Overview

Information on using built-in diagnostic programs like Lenovo Solution Center and UEFI.

Using the Setup Utility Program

Accessing and Starting Setup Utility

Procedure to enter and start the system's BIOS setup utility.

Managing System Passwords

Setting, changing, deleting, and recovering BIOS passwords.

Configuring Startup Devices

Selecting or changing the device sequence for booting the computer.

Changing BIOS Settings for OS Installation

Adjusting BIOS settings before installing a new operating system.

Symptom-to-FRU Index

Hard Disk Drive Boot Errors

Common causes and FRU actions for HDD boot issues.

POST Error Codes and Symptoms

Interpreting beep codes and POST error messages for diagnostics.

Undetermined Problems

Procedure for identifying failing devices when the cause is unclear.

Component Locations

Front Panel Components

Identifying connectors, controls, and indicators on the computer's front.

Rear Panel Connectors

Locating and identifying connectors on the back of the computer.

Major FRUs and CRUs Identification

Identifying Field Replaceable Units (FRUs) and Customer Replaceable Units (CRUs).

System Board Component Locations

Diagrams showing the placement of parts on the system board.

FRU Replacement Procedures (Specific Models)

Handling Static-Sensitive Devices

Essential precautions for safely handling sensitive computer components.

Removing and Reinstalling Computer Cover

Step-by-step instructions for opening and closing the computer chassis.

Memory Module Installation/Replacement

Procedure for installing or replacing RAM modules.

System Board Replacement

Detailed steps for replacing the main system board.

Completing Parts Replacement

Final steps after replacing parts, including reconnection and verification.

FRU Replacement Procedures (Alternative Models)

Handling Static-Sensitive Devices

Essential precautions for safely handling sensitive computer components.

Removing and Reinstalling Computer Cover

Step-by-step instructions for opening and closing the computer chassis.

Hard Disk Drive Replacement

Procedure for replacing the primary or secondary hard disk drive.

Optical Drive Replacement

Instructions for installing or replacing the optical drive.

System Board Replacement

Detailed steps for replacing the main system board.

Completing Parts Replacement

Final steps after replacing parts, including reconnection and verification.

FRU Replacement Procedures (Thin Client Models)

Handling Static-Sensitive Devices

Essential precautions for safely handling sensitive computer components.

Removing and Reinstalling Computer Cover

Step-by-step instructions for opening and closing the computer chassis.

Hard Disk Drive Assembly Replacement

Procedure for installing or removing the hard disk drive assembly.

System Fan Replacement

Instructions for replacing the computer's system fan.

Microprocessor Replacement

Detailed steps for replacing the computer's microprocessor.

Completing Parts Replacement

Final steps after replacing parts, including reconnection and verification.

Additional Service Information

Security Features Overview

Information on passwords, Vital Product Data, and Management Information Format.

BIOS Management and Updates

Details on BIOS levels, flash procedures, and updating the BIOS.

System Recovery Procedures

Steps for recovering from POST/BIOS or system image failures.

Power Management Features

Configuration of power management and automatic power-on features.

Appendix: Notices and Trademarks

Product Legal Notices

Legal notices, warranties, and disclaimers regarding Lenovo products.

Television Output Notice

Specific notice for models with factory-installed television-output feature.

Trademarks and Logos

List of Lenovo and third-party trademarks and registered logos.