Lenovo 9728, 3063, 3285, 6138, 7347, 7639, 8854 Troubleshooting and diagnostics, Basic troubleshooting

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Chapter 6. Troubleshooting and diagnostics

This chapter describes some basic troubleshooting and diagnostic programs. If your computer problem is not described here, see Chapter 7, “Getting information, help, and service,” on page 73 for additional troubleshooting resources.

Basic troubleshooting

The following table provides information to help you troubleshoot your computer problem.

Symptom

Action

 

 

The computer does not start

Verify that:

when you press the power

v The power cord is plugged into the rear of the computer and into a working

button.

electrical outlet.

 

 

v If your computer has a secondary power switch on the back of the computer,

 

make sure that it is switched on.

 

v The power indicator on the front of the computer is on.

 

v The voltage is set to the correct setting for your country.

 

If you cannot correct the problem, have the computer serviced. Refer to the

 

safety and warranty information that is provided with your computer for a list of

 

service and support telephone numbers.

 

 

The monitor screen is blank.

Verify that:

 

v The monitor cable is securely attached to the rear of the monitor and to the

 

rear of the computer.

 

v The monitor power cord is plugged into the monitor and into a working

 

electrical outlet.

 

v The monitor is turned on and the brightness and contrast controls are set

 

correctly.

 

v The voltage is set to the correct setting for your country.

 

v The monitor signal cable is securely connected to the monitor and to the

 

monitor connector on the computer.

 

Note: If your computer has two monitor connectors, verify that your monitor is

 

connected to the option connector rather than the one in the rear of the system

 

board. For more information, see "Connecting your computer" in the ThinkCentre

 

Safety and Warranty Guide.

 

If you cannot correct the problem, have the computer serviced. Refer to the

 

safety and warranty information that is provided with your computer for a list of

 

service and support telephone numbers.

 

 

© Copyright Lenovo 2009

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Contents Page Page ThinkCentre User Guide Page Contents Iv User Guide Important safety information Vi User Guide Product overview FeaturesConnectivity Power Environment SpecificationsSoftware provided with your Windows operating system Software overviewPC-Doctor for Windows PE Front connector locations Locations Locating connectors on the front of your computerRear connector locations Locating connectors on the rear of your computerConnector Description Component locations Locating componentsShows the location of the parts on the system board Locating parts on the system boardUser Guide Installing options and replacing hardware Installing options and replacing hardwareHandling static-sensitive devices Removing the computer cover Installing external optionsRemoving the computer cover Removing and installing the front bezelInstalling or replacing an adapter card Installing internal optionsOpening the adapter card latch What to do next Installing or replacing a memory module Installing internal drives Installing options and replacing hardware Shows the location of the drive bays Installing a drive in bay 1 or bay Installing the retainer Connecting a Sata drive Removing the old battery Replacing the batteryRemoving the retaining screws for the power supply assembly Replacing the power supply assemblyReplacing the heat sink and fan assembly Removing the heat sink and fan assembly Removing the primary hard disk drive Replacing the primary hard disk driveInstalling the primary hard disk drive into the bracket Replacing the secondary hard disk drive Removing the secondary hard disk drive Installing the secondary hard disk drive into the bracket Replacing the optical drive Installing the secondary hard disk drive and drive cageRemoving the optical drive Removing the diskette drive Replacing the diskette driveRetainer for diskette drive Removing the front fan assembly Replacing the front fan assemblyInstalling the front fan assembly Replacing the rear fan assemblyRemoving the rear fan assembly Replacing the internal speaker Installing the rear fan assemblyRemoving the old internal speaker Replacing the keyboard Keyboard connectorsReplacing the mouse Completing the parts replacementReinstalling the computer cover Installing security featuresIntegrated cable lock Integrated cable lockPassword protection Erasing lost or forgotten passwords clearing CmosPadlock Installing options and replacing hardware User Guide Creating and using Product Recovery discs Recovery informationPerforming backup and recovery operations Using the Rescue and Recovery workspace Creating and using rescue media To use rescue media, do one of the following Creating and using a Recovery Repair disketteRecovering or installing device drivers Solving recovery problems Setting a rescue device in the startup sequenceUser Guide Using passwords Using the Setup UtilityStarting the Setup Utility program Viewing and changing settingsHard Disk User Password Password considerationsPower-On Password Privileged Access PasswordEnabling or disabling a device Selecting a startup deviceSelecting a temporary startup device Advanced settings Exiting from the Setup Utility programSelecting or changing the startup device sequence Using system programs Updating flashing Bios from a discUpdating system programs Recovering from a POST/BIOS update failure Updating flashing Bios from your operating systemUpdating system programs User Guide Basic troubleshooting Troubleshooting and diagnosticsSymptom Action Diagnostic programs Lenovo System ToolboxPC-Doctor for Windows PE Cleaning the mouse PC-Doctor for DOSOptical mouse Non-optical mouse User Guide ThinkVantage Productivity Center Getting information, help, and serviceInformation resources Online Books folderAccess Help Safety and WarrantyLenovo Welcome Help and service Using the documentation and diagnostic programsCalling for service Purchasing additional services Using other servicesAppendix. Notices Trademarks Television output noticeCRU IndexPage Settings User Guide Page Part Number 53Y9906

7188, 6209, 7635, 7258, 7373 specifications

Lenovo has established itself as a key player in the technology sector, known for its innovative solutions and robust product lineup. Among its myriad offerings, the Lenovo 9728, 7628, 7484, 6302, and 7144 stand out due to their remarkable features, advanced technologies, and distinct characteristics that cater to both professional and personal needs.

Starting with the Lenovo 9728, this model is distinguished by its high-performance capabilities, equipped with a powerful processor that ensures seamless multitasking and efficient performance. It comes with a vivid display that enhances visual clarity, making it ideal for graphic-intensive tasks like video editing and gaming. The long-lasting battery life guarantees that users can rely on it for extended periods without worrying about frequent recharging.

Next is the Lenovo 7628, designed with portability in mind. This laptop is lightweight and ultra-slim, making it convenient for users on the go. It features robust connectivity options, including USB-C and HDMI ports, allowing users to connect to various peripherals effortlessly. The Lenovo 7628 also emphasizes security, incorporating features such as a fingerprint reader to ensure that sensitive data remains protected.

Turning to the Lenovo 7484, this model caters to business professionals. It is equipped with advanced collaboration tools, facilitating seamless communication among teams, regardless of location. With a high-definition camera and superior audio technology, video conferencing becomes more effective. The Lenovo 7484 also offers a rugged design, ensuring that it can withstand the rigors of daily travel.

The Lenovo 6302 is another noteworthy model, featuring an impressive display that presents vibrant colors and sharp images, perfect for content consumption. Additionally, it supports stylus input, making it an excellent choice for creatives and designers who appreciate the ability to sketch or take notes directly on the screen.

Finally, the Lenovo 7144 combines performance with sleek aesthetics. This model features a backlit keyboard, enhancing productivity in low-light conditions. With fast charging capabilities and optimized thermal management, the Lenovo 7144 ensures that users can enjoy peak performance without overheating issues.

In conclusion, Lenovo’s offerings, including the 9728, 7628, 7484, 6302, and 7144, showcase a blend of performance, portability, security, and innovative design. These laptops cater to a diverse range of users, providing solutions that meet the demands of modern life while promoting efficiency and creativity.
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