Accessing a program on your computer . . . Selecting a startup device ..An introduction to Lenovo programs ..Enabling ErP LPS compliance mode ..ICE performance mode ..
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....Lenovo Web site ... . Creating and using recovery media ..
– Use only one hand when working with powered-on electrical equipment; keep the other hand in your pocket or behind your back. Remember: There must be a complete circuit to cause electrical shock. By observing the above rule, you may prevent a current from passing through your body. ThinkCentre M79 Hardware Maintenance Manual...
– When using a tester, set the controls correctly and use the approved probe leads and accessories for that tester. – Stand on suitable rubber mats (obtained locally, if necessary) to insulate you from grounds such as metal floor strips and machine frames. Observe the special safety precautions when you work with very high voltages;...
– Use the round ground-prong of the ac plug on ac-operated computers. Grounding requirements Electrical grounding of the computer is required for operator safety and correct system function. Proper grounding of the electrical outlet can be verified by a certified electrician. ThinkCentre M79 Hardware Maintenance Manual...
Safety notices (multi-lingual translations) The caution and danger safety notices in this section are provided in the following languages: • English • Arabic • Brazilian/Portuguese • Chinese (simplified) • Chinese (traditional) • French • German • Hebrew • Italian • Korean •...
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The power control button on the device and the power switch on the power supply do not turn off the electrical current supplied to the device. The device also might have more than one power ThinkCentre M79 Hardware Maintenance Manual...
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cord. To remove all electrical current from the device, ensure that all power cords are disconnected from the power source. Chapter 1 Read this first: Important safety information...
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≥18 kg (37 lb) ≥32 kg (70.5 lb) ≥55 kg (121.2 lb) ThinkCentre M79 Hardware Maintenance Manual...
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PERIGO A corrente elétrica proveniente de cabos de alimentação, de telefone e de comunicações é perigosa. Para evitar risco de choque elétrico: • Não conecte nem desconecte nenhum cabo ou execute instalação, manutenção ou reconfiguração deste produto durante uma tempestade com raios. •...
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O dispositivo também pode ter mais de um cabo de alimentação. Para remover toda a corrente elétrica do dispositivo, assegure que todos os cabos de alimentação estejam desconectados da fonte de alimentação. ThinkCentre M79 Hardware Maintenance Manual...
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Chapter 1 Read this first: Important safety information...
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Chapter 1 Read this first: Important safety information...
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(sauf instruction contraire mentionnée dans les procédures d'installation et de configuration). • Lorsque vous installez, que vous déplacez, ou que vous manipulez le présent produit ou des périphériques qui lui sont raccordés, reportez-vous aux instructions ci-dessous pour connecter et déconnecter les différents cordons. ThinkCentre M79 Hardware Maintenance Manual...
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Connexion Déconnexion 1. Mettez les unités HORS TENSION. 1. Mettez les unités HORS TENSION. 2. Commencez par brancher tous les cordons sur les 2. Débranchez les cordons d'alimentation des prises. unités. 3. Débranchez les câbles d'interface des connecteurs. 3. Branchez les câbles d'interface sur des connecteurs. 4.
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Schutzkontakt anschließen. • Die Signalkabel nach Möglichkeit einhändig anschließen oder lösen, um einen Stromschlag durch Berühren von Oberflächen mit unterschiedlichem elektrischem Potenzial zu vermeiden. • Geräte niemals einschalten, wenn Hinweise auf Feuer, Wasser oder Gebäudeschäden vorliegen. ThinkCentre M79 Hardware Maintenance Manual...
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• Die Verbindung zu den angeschlossenen Netzkabeln, Telekommunikationssystemen, Netzwerken und Modems ist vor dem Öffnen des Gehäuses zu unterbrechen, sofern in den Installations- und Konfigurationsprozeduren keine anders lautenden Anweisungen enthalten sind. • Zum Installieren, Transportieren und Öffnen der Abdeckungen des Computers oder der angeschlossenen Einheiten die Kabel gemäß...
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Mit dem Netzschalter an der Einheit und am Netzteil wird die Stromversorgung für die Einheit nicht unterbrochen. Die Einheit kann auch mit mehreren Netzkabeln ausgestattet sein. Um die Stromversorgung für die Einheit vollständig zu unterbrechen, müssen alle zum Gerät führenden Netzkabel vom Netz getrennt werden. ThinkCentre M79 Hardware Maintenance Manual...
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Chapter 1 Read this first: Important safety information...
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• Non collegare o scollegare qualsiasi cavo oppure effettuare l'installazione, la manutenzione o la riconfigurazione del prodotto durante un temporale. • Collegare tutti i fili elettrici a una presa di alimentazione correttamente cablata e dotata di messa a terra. ThinkCentre M79 Hardware Maintenance Manual...
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• Collegare alle prese elettriche appropriate tutte le apparecchiature che verranno utilizzate per questo prodotto. • Se possibile, utilizzare solo una mano per collegare o scollegare i cavi di segnale. • Non accendere assolutamente apparecchiature in presenza di incendi, perdite d'acqua o danno strutturale.
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Il pulsante di controllo dell'alimentazione presente sull'unità e l'interruttore dell'alimentatore non disattivano l'alimentazione corrente fornita all'unità. E' possibile che l'unità disponga di più cavi di alimentazione. Per disattivare l'alimentazione dall'unità, accertarsi che tutti i cavi di alimentazione siano scollegati dalla fonte di alimentazione. ThinkCentre M79 Hardware Maintenance Manual...
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Chapter 1 Read this first: Important safety information...
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• Cualquier equipo que se conecte a este producto también debe conectarse a tomas de corriente debidamente cableadas. • Siempre que sea posible, utilice una sola mano para conectar o desconectar los cables de señal. • No encienda nunca un equipo cuando hay señales de fuego, agua o daños estructurales. ThinkCentre M79 Hardware Maintenance Manual...
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• Desconecte los cables de alimentación, los sistemas de telecomunicaciones, las redes y los módems conectados antes de abrir las cubiertas de los dispositivos, a menos que se indique lo contrario en los procedimientos de instalación y configuración. • Conecte y desconecte los cables, como se describe en la tabla siguiente, cuando instale, mueva o abra las cubiertas de este producto o de los dispositivos conectados.
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Además, el dispositivo podría tener más de un cable de alimentación. Para suprimir toda la corriente eléctrica del dispositivo, asegúrese de que todos los cables de alimentación estén desconectados de la toma de corriente. ThinkCentre M79 Hardware Maintenance Manual...
• Locations of parts on the system board • Locations of internal drives • Computer features • Software programs provided by Lenovo Locations This section provides the following topics: • “Locating connectors, controls, and indicators on the front of your computer” on page 28 •...
The following illustration shows the locations of the connectors, controls, and indicators on the front of your computer. Figure 1. Front connector, control, and indicator locations Hard disk drive activity indicator Power indicator Power button Optical drive eject/close button USB 2.0 connector Microphone connector Headphone connector USB 2.0 connector ThinkCentre M79 Hardware Maintenance Manual...
Locating connectors on the rear of your computer The following illustration shows the locations of the connectors on the rear of your computer. Some connectors on the rear of your computer are color-coded to help you determine where to connect the cables on your computer.
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USB hub, which you can use to connect additional USB devices. VGA connector Used to attach a VGA monitor or other devices that use a Video Graphics Array (VGA) connector. ThinkCentre M79 Hardware Maintenance Manual...
Locating components The following illustration shows the locations of the various components in your computer. To remove the computer cover, see “Removing the computer cover” on page 103. Figure 3. Component locations Microprocessor Heat sink and fan assembly Memory modules Front bezel Optical drive Slim card reader (available on some models)
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Figure 4. Locating major FRUs and CRUs ThinkCentre M79 Hardware Maintenance Manual...
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Rear Wi-Fi antenna (available on some models) PCI Express card Cover presence switch (intrusion switch) (available on some models) Rear fan assembly Keyboard Mouse For detailed FRU information, such as the FRU part numbers and supported computer models, go to: http:/www.lenovo.com/serviceparts-lookup Chapter 2 Product overview...
Locating internal drives Internal drives are devices that your computer uses to read and store data. You can add drives to your computer to increase storage capacity and enable your computer to read other types of media. Internal drives are installed in bays. When you install or replace an internal drive, note the type and size of the drive that each bay supports and correctly connect the required cables.
Locating the machine type and model label The machine type and model label identifies your computer. When you contact Lenovo for help, the machine type and model information helps support technicians to identify your computer and provide faster service. The machine type and model label is attached on the bottom of your computer as shown.
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• On the Microsoft Windows 8.1 operating system, go to the desktop and move your pointer to the top-right or bottom-right corner of the screen to display the charms. Then click Settings ➙ PC info to view the information. • On the Microsoft Windows 10 operating system, click the Start button to open the Start menu. Then, click Settings ➙...
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Wake on LAN is an Ethernet computer networking standard that allows a computer to be turned on or woken up by a network message. The message is usually sent by a program running on another computer on the same local area network. ThinkCentre M79 Hardware Maintenance Manual...
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The operating system(s) listed here are being certified or tested for compatibility at the time this publication goes to press. Additional operating systems might be identified by Lenovo as compatible with your computer following the publication of this manual. This list is subject to change. To determine if an operating system has been certified or tested for compatibility, check the Web site of the operating system vendor.
Accessing a program on your computer Note: For Windows 7, some of the Lenovo programs might be ready to be installed, so you need to install them manually. Then, you can access and use these programs. To install a program that is ready to be ®...
The Lenovo PowerENGAGE program enables you to register your computer with Lenovo. – Message Center Plus The Message Center Plus program automatically displays messages informing you about important notices from Lenovo, such as alerts on system updates and alerts on conditions that require your attention. Chapter 2...
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BIOS updates. The program gathers information from the Lenovo Help Center about new updates for your computer, then sorts and displays the updates for download and installation. You have complete control of which updates to download and install.
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The SHAREit or Lenovo SHAREit program provides a quick and easy way to share files and folders among computers, smartphones, tablets, or smart TVs with the Android or the Windows operating system installed. SHAREit or Lenovo SHAREit uses any type of network or even no network at all to share files and folders.
• CD-ROM drive: Used to read CDs only. • DVD-ROM drive: Used to read DVDs and CDs. • BD-ROM drive: Used to read blu-ray discs (BDs), DVDs, and CDs. • Recordable optical drive: Used to read and record a disc. ThinkCentre M79 Hardware Maintenance Manual...
When using the optical drive, follow these guidelines: • Do not place the computer in a location where the drive is exposed to any of the following conditions: – High temperature – High humidity – Excessive dust – Excessive vibration or sudden shock –...
• Move the pointer to the extreme bottom-left corner of the screen and then move the pointer upward along the left edge of the screen. Representations of all available workspaces are displayed along the left edge of the screen. ThinkCentre M79 Hardware Maintenance Manual...
For the answers to more frequently asked questions about using your computer, go to: http://www.lenovo.com/support/faq How can I get my user guide in another language? The user guide is available in various languages at: http://www.lenovo.com/UserManuals...
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USB key. If your computer does not come with it, contact the Lenovo Customer Support Center to order a recovery disc set or recovery USB key. For a list of Lenovo Support phone numbers, go to http://www.lenovo.com/support/phone. If you cannot find the support telephone number for your country or region, contact your Lenovo reseller.
For more information about power cords, see “Power cords and power adapters” on page 1. Accessibility information Lenovo is committed to providing users who have hearing, vision, and mobility limitations with greater access to information and technology. This section provides information about the ways these users can get the most out of their computer experience.
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Keyboard shortcut Function Windows logo key + U Open Ease of Access Center Right Shift for eight seconds Turn on or turn off Filter Keys Shift five times Turn on or turn off Sticky Keys Num Lock for five seconds Turn on or turn off Toggle Keys Left Alt+Left Shift+Num Lock Turn on or turn off Mouse Keys...
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• To change the item size temporarily, use the Magnifier tool in Ease of Access Center. See “Ease of Access Center” on page 53. • To change the item size permanently, do the following: – Change the size of all the items on your screen. ThinkCentre M79 Hardware Maintenance Manual...
Lenovo for help. In addition, some locations offer extended privileges and services to registered users. To register your computer with Lenovo, ensure that your computer is connected to the Internet. Then, go to http://www.lenovo.com/register and follow the instructions on the screen.
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For power cord information and part numbers, go to: http://www.lenovo.com/powercordnotice ThinkCentre M79 Hardware Maintenance Manual...
The cable lock also locks the buttons used to open the computer cover. This is the same type of lock used with many notebook computers. You can order such a cable lock directly from Lenovo by searching for Kensington at: http://www.lenovo.com/support Figure 9.
– For Windows 7: Click the Start button to open the Start menu, and then click Control Panel ➙ User Accounts. – For Windows 8.1: Move the pointer to the top-right or bottom-right corner of the screen to display the charms. Then, click Settings ➙ Change PC settings ➙ Accounts. ThinkCentre M79 Hardware Maintenance Manual...
Your computer is preinstalled with an antivirus program to help you guard against, detect, and eliminate viruses. Lenovo provides a full version of antivirus software on your computer with a free 30-day subscription. After 30 days, you must renew the license to continue receiving the antivirus software updates.
To set, change, or delete a password, do the following: 1. Start the Setup Utility program. See “Starting the Setup Utility program” on page 63. 2. From the Setup Utility program main menu, select Security. ThinkCentre M79 Hardware Maintenance Manual...
3. Depending on the password type, select Set Power-On Password, Set Administrator Password, or Hard Disk Password. 4. Follow the instructions on the right side of the screen to set, change, or delete a password. Note: A password can be any combination of up to 64 alphabetic and numeric characters. For more information, see “Password considerations”...
68. Enabling ErP LPS compliance mode Lenovo computers meet the eco-design requirements of the ErP Lot 3 regulation. For more information, go http://www.lenovo.com/ecodeclaration You can enable ErP LPS compliance mode in the Setup Utility program to reduce the consumption of electricity when your computer is off or in sleep mode.
The wake up on alarm feature enables your computer to wake up at a set time. To enable the wake up on alarm feature, do the following: 1. Start the Setup Utility program. 2. From the Setup Utility program main menu, select Power ➙ Automatic Power On, and press Enter. 3.
Setup Utility program. Updating or recovering the BIOS Lenovo might make changes and enhancements to the BIOS. When updates are released, they are available as downloadable files on the Lenovo Web site at http://www.lenovo.com/drivers. Instructions for using the BIOS updates are available in a TXT file that is included with the update files.
Lenovo might make changes and enhancements to the POST and BIOS. When updates are released, they are available as downloadable files on the Lenovo Web site at http://www.lenovo.com. Instructions for using the POST and BIOS updates are available in a TXT file that is included with the update files.
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11. Reconnect any cables that were disconnected and reinstall the PCI card if removed. 12. Reinstall the computer cover and reconnect any cables that were disconnected. 13. Press the power button to turn on the computer and restart the operating system. ThinkCentre M79 Hardware Maintenance Manual...
To get the latest system updates for your computer, ensure that your computer is connected to the Internet and do one of the following: • Use one of the following Lenovo programs to get the system updates, such as device driver updates, software updates, and BIOS updates: –...
4. Check the surface on which you are using the mouse. If you have a very intricate picture or pattern beneath the mouse, it might be difficult for the digital signal processor to determine changes in the mouse position. 5. Reconnect the mouse cable to the computer. 6. Turn your computer back on. ThinkCentre M79 Hardware Maintenance Manual...
The cause of a problem might be change in hardware, change in software, or any other actions that might have taken place. A log book can help you or a Lenovo technician determine the cause of a problem. • Back up your data on the storage drive regularly. You can restore the storage drive from a backup.
1. Back up all files and data from the hard disk drive. There are a variety of backup programs available commercially. If you use the Windows 7 operating system, Lenovo provides the Rescue and Recovery program to help you back up and restore data. See “Performing backup and recovery operations”...
Note: If you cannot correct the problem, have the computer serviced. For a list of service and support telephone numbers, refer to the Safety, Warranty, and Setup Guide that comes with your computer or go to the Lenovo Support Web site at: http://www.lenovo.com/support/phone...
If this does not correct the problem, continue with the next step. 6. Run the diagnostic program. See “Lenovo Solution Center” on page 86 for more information. • If the diagnostic program detects a hardware failure or if you are unable to run the diagnostic program, contact the Lenovo Customer Support Center.
If the symptom occurred immediately after you installed new software or a new hardware option, do the following before referring to the troubleshooting information: 1. Remove the new hardware option or software. If you must remove the computer cover to remove a hardware option, ensure that you review and follow the electrical safety information provided with your computer.
Invalid disc or no disc found message Solutions: • Ensure that a DVD disc is in the drive with the shiny side of the disc facing down. • Ensure that video resolution is set to less than 1152 x 864 pixels. ThinkCentre M79 Hardware Maintenance Manual...
(one to five hard disk drives) or the LSI MegaRAID SAS adapter is installed. If these actions do not correct the problem, run the diagnostic program Lenovo Solution Center. See “Lenovo Solution Center” on page 86. If you need technical assistance, see Chapter 12 “Getting information, help, and service”...
If these actions do not correct the problem, run the diagnostic program Lenovo Solution Center. See “Lenovo Solution Center” on page 86. Problems with the keyboard or mouse This section provides solutions to keyboard-related and mouse-related problems. The mouse does not work Solutions: •...
• Press the power button to resume the computer from sleep or hibernation mode. The monitor works when I turn on the computer, but goes blank when I start some application programs Solutions: • Connect the monitor signal cable from your monitor to an appropriate connector on the computer. A loose cable might cause intermittent problems.
Note: Bluetooth is supported only on some computer models. I have connected an option to my computer, but it does not work Solution: Refer to the documentation that comes with the option to ensure that you have connected the option correctly. ThinkCentre M79 Hardware Maintenance Manual...
Performance and lockup problems This section provides solutions to performance-related problems of your computer. Insufficient free hard disk drive space Solutions: Free up hard disk drive space. • Clean out your Inbox, Sent Items, and Deleted Items folders from your e-mail application. •...
Check with your software manufacturer to see if any updates are available. Many software manufacturers make updates available from the World Wide Web. Some application programs do not work as expected Symptom: Software does not work as expected. ThinkCentre M79 Hardware Maintenance Manual...
Actions: • Most software programs have built-in help systems that provide instructions for most tasks. If you are having difficulty performing a specific task within a software program, refer to the help system for that program. Help systems are typically accessible from a menu or button in the program, and frequently from the F1 key.
Note: If you cannot isolate and repair the problem yourself after running the program, save and print the log files. You will need the log files when you speak to a Lenovo technical support representative. For additional information, refer to the Lenovo Solution Center help system.
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Table 1. Items on the main screen of the UEFI diagnostic program DIAGNOSTICS TOOLS • LCD test • System information • Memory - Quick test • Recover bad sectors tool • Memory - Extended test • Generate configuration file • Motherboard test •...
• If you did not receive any error message, look for a description of your error symptoms in the first part of this index. Hard disk drive boot error A hard disk drive boot error can have the following causes. ThinkCentre M79 Hardware Maintenance Manual...
Error FRU/Action The start-up drive is not in the boot sequence in Check the configuration and ensure the start-up drive is configuration. in the boot sequence. No operating system installed on the boot drive. Install an operating system on the boot drive. The boot sector on the startup drive is corrupted.
1. Ensure that network is in startup sequence as first device or first device after diskette. 2. Ensure that network adapter is enabled for RPL. 3. Network adapter (Advise network administrator of new MAC address) ThinkCentre M79 Hardware Maintenance Manual...
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Message/Symptom FRU/Action ® Computer will not perform a Wake On LAN (if applicable) 1. Check power supply and signal cable connections to network adapter. 2. Ensure that the operating system settings are set to enable Wake on LAN. 3. Ensure Wake On LAN feature is enabled in Setup/Configuration (see “Starting the Setup Utility program”...
4. Repeat steps 1 through 3 until you find the failing device or adapter. If all devices and adapters have been removed, and the problem continues, replace the system board. See “Replacing the system board” on page 121. ThinkCentre M79 Hardware Maintenance Manual...
Product Recovery program installed. If the Enhanced Backup and Restore icon in the Lenovo ThinkVantage Tools program is dimmed, it indicates that you must install the Rescue and Recovery program manually before enabling its features. To install the Rescue and Recovery program, do the following: 1.
Note: On the Windows 7 operating system, you can create recovery media using discs or external USB storage devices. To create recovery media on the Windows 7 operating system, click Start ➙ All Programs ➙ Lenovo ThinkVantage Tools ➙ Factory Recovery Disks. Then, follow the instructions on the screen.
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To perform a recovery operation using the Rescue and Recovery program on the Windows 7 operating system, do the following: 1. From the Windows desktop, click Start ➙ All Programs ➙ Lenovo ThinkVantage Tools ➙ Enhanced Backup and Restore. The Rescue and Recovery program opens.
Creating a rescue medium To create a rescue medium on the Windows 7 operating system, do the following: 1. From the Windows desktop, click Start ➙ All Programs ➙ Lenovo ThinkVantage Tools ➙ Enhanced Backup and Restore. The Rescue and Recovery program opens.
Reinstalling preinstalled programs and device drivers Your computer enables you to reinstall preinstalled programs and device drivers. Reinstalling preinstalled programs To reinstall programs preinstalled on your Lenovo computer, do the following: 1. Turn on the computer. 2. Go to C:\SWTOOLS.
Attention: If you reset your computer, all your personal files and settings will be deleted. To avoid data loss, make a backup copy of all the data that you want to keep. To reset your computer, do the following: ThinkCentre M79 Hardware Maintenance Manual...
1. Move the pointer to the top-right or bottom-right corner of the screen to display the charms. Click Settings ➙ Change PC settings ➙ Update and recovery ➙ Recovery. 2. In the Remove everything and reinstall Windows section, click Get started. Using the advanced startup options Advanced startup options enable you to change the startup settings of your Windows operating system, start the computer from an external device, or restore the Windows operating system from a system image.
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Note: To create a recovery medium, see “Good maintenance practices” on page 73. • Use the recovery USB key provided by Lenovo to restore the entire storage drive to the factory-default settings. – If your computer comes with the recovery USB key, follow the instructions shipped with the USB key.
1 “Read this first: Important safety information” on page 1. Notes: • Use only computer parts provided by Lenovo. • When installing or replacing an option, use the appropriate instructions in this section along with the instructions that come with the option.
To remove and reinstall the front bezel, do the following: 1. Turn off the computer and disconnect all power cords from electrical outlets. 2. Remove the computer cover. See “Removing the computer cover” on page 103. ThinkCentre M79 Hardware Maintenance Manual...
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3. Remove the front bezel by releasing the plastic tabs on the left side and pivoting the front bezel outward. Figure 12. Removing the front bezel 4. To reinstall the front bezel, align the plastic tabs on the right side of the front bezel with the corresponding holes in the chassis, then pivot the front bezel inwards until it snaps into position on the left side.
2. Remove the computer cover. See “Removing the computer cover” on page 103. 3. At the rear of the computer, remove the screw that secures the card latch. Figure 14. Removing the screw that secures the PCI Express card latch ThinkCentre M79 Hardware Maintenance Manual...
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4. Depending on whether you are installing or replacing a PCI card, do one of the following: • If you are installing a PCI card, remove the appropriate metal slot cover. • If you are replacing an old PCI card, grasp the old card that is currently installed and gently pull it out of the slot.
The numbers 1, 2, 3, and 4 indicate the installation sequence. To locate the memory module slots, see “Locating parts on the system board” on page 34. ThinkCentre M79 Hardware Maintenance Manual...
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UDIMM DIMM 1 DIMM 2 DIMM 3 DIMM 4 One UDIMM Two UDIMMs X, 1 X, 2 Three UDIMMs X, 1 X, 3 X, 2 Four UDIMMs X, 1 X, 3 X, 2 X, 4 To install or replace a memory module, do the following: 1.
1 “Read this first: Important safety information” on page 1. To install or replace an optical drive, do the following: To install or replace an optical drive, do the following: 1. Turn off the computer and disconnect all power cords from electrical outlets. ThinkCentre M79 Hardware Maintenance Manual...
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2. Remove the computer cover. See “Removing the computer cover” on page 103. 3. Remove the front bezel. See “Removing and reinstalling the front bezel” on page 104. 4. Depending on whether you are installing or replacing an optical drive, do one of the following: •...
1. Remove all media from the drives and turn off all attached devices and the computer. Then, disconnect all power cords from electrical outlets and disconnect all cables that are connected to the computer. 2. Remove the computer cover. See “Removing the computer cover” on page 103. ThinkCentre M79 Hardware Maintenance Manual...
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3. Remove the front bezel. See “Removing and reinstalling the front bezel” on page 104. 4. Record the cable routing of the installed slim card reader and disconnect the cable of the slim card reader from the system board. 5. Remove the screw that secures the slim card reader bracket and then remove the bracket from the chassis.
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34. What to do next: • To work with another piece of hardware, go to the appropriate section. • To complete the installation or replacement, go to “Completing the parts replacement” on page 142. ThinkCentre M79 Hardware Maintenance Manual...
Replacing the battery Attention: Do not open your computer or attempt any repair before reading and understanding the Chapter 1 “Read this first: Important safety information” on page 1. Your computer has a special type of memory that maintains the date, time, and settings for built-in features, such as parallel-connector assignments (configuration).
4. Locate the heat sink and fan assembly. See “Locating parts on the system board” on page 34. 5. Disconnect the heat sink and fan assembly cable from the microprocessor fan connector on the system board. See “Locating parts on the system board” on page 34. ThinkCentre M79 Hardware Maintenance Manual...
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6. Follow the following sequence to remove the four screws that secure the heat sink and fan assembly to the system board: a. Partially remove screw , then fully remove screw , and then fully remove screw b. Partially remove screw , then fully remove screw , and then fully remove screw Note: Carefully remove the four screws from the system board to avoid any possible damage to the...
3. Disconnect the power supply assembly cables from the system board and all drives. See “Locating parts on the system board” on page 34. 4. Release the power supply assembly cables from the cable clips and ties in the chassis. ThinkCentre M79 Hardware Maintenance Manual...
8. Install and tighten the four screws to secure the power supply assembly. Note: Use only screws provided by Lenovo. 9. Reconnect the power supply assembly cables to the system board and each of the drives.
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6. Lift the small handle to release the microprocessor secured on the system board. Figure 32. Accessing the microprocessor 7. Lift the microprocessor straight up and out of the microprocessor socket. Figure 33. Removing the microprocessor Notes: ThinkCentre M79 Hardware Maintenance Manual...
a. Your microprocessor and socket might look different from the one illustrated. b. Note the orientation of the microprocessor in the socket. You can look for the small triangle on one corner of the microprocessor. This is important when installing the new microprocessor on the system board.
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11. Install the heat sink and fan assembly and connect the heat-sink-and-fan-assembly cable to the new system board. See “Replacing the heat sink and fan assembly” on page 116. Note: If necessary, apply the appropriate amount of thermal grease on the bottom of the heat sink and fan assembly. ThinkCentre M79 Hardware Maintenance Manual...
12. Install all memory modules and PCI Express cards removed from the failing system board on the new system board. See “Installing or replacing a memory module” on page 108 and “Installing or replacing a PCI card” on page 106. 13.
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9. Slide the new hard disk drive into the drive cage until it snaps into position. 10. Align the screw holes in the new hard disk drive with the corresponding holes in the drive bay. Then, install the four screws to secure the new hard disk drive in place. ThinkCentre M79 Hardware Maintenance Manual...
Figure 38. Installing the hard disk drive 11. Connect the signal cable and the power cable to the new hard disk drive. What to do next: • To work with another piece of hardware, go to the appropriate section. • To complete the installation or replacement, go to “Completing the parts replacement” on page 142. Installing the solid-state drive Attention: Do not open your computer or attempt any repair before reading and understanding the Chapter 1 “Read this first: Important safety information”...
3. Locate the rear fan assembly. See “Locating components” on page 31. 4. Disconnect the rear fan assembly cable from the system fan connector on the system board. See “Locating parts on the system board” on page 34. ThinkCentre M79 Hardware Maintenance Manual...
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5. The rear fan assembly is attached to the chassis by four rubber mounts. Remove the rear fan assembly by breaking or cutting the rubber mounts and gently pulling the rear fan assembly out of the chassis. Note: The new rear fan assembly will have four new rubber mounts attached. Figure 40.
5. Disconnect the front audio and USB assembly cables from the system board. See “Locating parts on the system board” on page 34. Note: Ensure that you note the locations of the cables when you disconnect the cables from the system board. ThinkCentre M79 Hardware Maintenance Manual...
6. Remove the screw that secures the front audio and USB assembly bracket to the chassis to remove the bracket from the chassis. Figure 42. Removing the screw that secures the front audio and USB assembly to the chassis 7. Remove the two screws that secure the front audio and USB assembly to its bracket and remove the failing front audio and USB assembly from the bracket.
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Then disengage the thermal-sensor plastic holder from the chassis. Figure 43. Removing the thermal sensor 7. Pull the entire thermal sensor out of the chassis. ThinkCentre M79 Hardware Maintenance Manual...
8. Insert the new thermal sensor cable into the hole in the chassis. Then align the two tabs on the thermal-sensor plastic holder with the two holes in the chassis, and push the plastic holder until it snaps into position. Figure 44.
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See “Locating parts on the system board” on page 34. 5. Remove the screw that secures the cover presence switch and remove the cover presence switch from the chassis. Figure 45. Removing the cover presence switch ThinkCentre M79 Hardware Maintenance Manual...
6. Position the new cover presence switch so that the screw hole in the cover presence switch is aligned with the corresponding hole in the chassis. Then install the screw to secure the cover presence switch to the chassis. Figure 46. Installing the new cover presence switch 7.
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Figure 48. Installing the front WiFi antenna 6. Connect the front antenna cable to the Wi-Fi card module. What to do next: • To work with another piece of hardware, go to the appropriate section. ThinkCentre M79 Hardware Maintenance Manual...
• To complete the installation or replacement, go to “Completing the parts replacement” on page 142. Removing the front Wi-Fi antenna To remove the front Wi-Fi antenna, do the following: 1. Remove all media from the drives and turn off all attached devices and the computer. Then, disconnect all power cords from electrical outlets and disconnect all cables that are connected to the computer.
• To complete the installation or replacement, go to “Completing the parts replacement” on page 142. Replacing the Wi-Fi units Attention: Do not open your computer or attempt any repair before reading and understanding the Chapter 1 “Read this first: Important safety information” on page 1. ThinkCentre M79 Hardware Maintenance Manual...
This section provides instructions on how to replace the Wi-Fi units. The Wi-Fi units include a Wi-Fi adapter card, a Wi-Fi card module, and a rear Wi-Fi antenna cable. Replacing the Wi-Fi units involves the following operations: • “Removing the Wi-Fi card module” on page 137 •...
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2. Remove the computer cover. See “Removing the computer cover” on page 103. 3. If your computer comes with a Wi-Fi card module that supports the Bluetooth function, disconnect the Bluetooth cable from the Wi-Fi adapter card. ThinkCentre M79 Hardware Maintenance Manual...
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Figure 55. Disconnecting the Bluetooth cable Note: The Bluetooth cable connects the Bluetooth connector on the Wi-Fi adapter card to the front USB connector on the system board to support the Bluetooth function. 4. At the rear of the computer, press the release button to open the PCI card latch Figure 56.
1. Insert the Wi-Fi card module into the mini PCI Express slot, and then install the two screws to secure the Wi-Fi card module to the Wi-Fi adapter card. Figure 57. Installing the Wi-Fi card module ThinkCentre M79 Hardware Maintenance Manual...
2. Connect the front antenna cable and rear antenna cable to the Wi-Fi card module. Figure 58. Installing the Wi-Fi antenna cables 3. Install the Wi-Fi adapter card into the PCI Express x1 slot on the system board. See “Locating parts on the system board”...
2. If you have removed the front bezel, reinstall it. 3. Ensure that the cables are routed correctly before reinstalling the computer cover. Keep cables clear of the hinges and sides of the computer chassis to avoid interference with reinstalling the computer cover. ThinkCentre M79 Hardware Maintenance Manual...
8. To update your configuration, refer to “Using the Setup Utility program” on page 63. Note: In most areas of the world, Lenovo requires the return of the defective Customer Replaceable Unit (CRU). Information about this will come with the CRU or will come a few days after the CRU arrives.
Lenovo Web site The Lenovo Web site (http://www.lenovo.com) provides up-to-date information and services to help you buy, upgrade, and maintain your computer. You can also do the following: •...
Most computers come with a diagnostic program that help you identify hardware problems. You can also get the latest technical information and download device drivers and updates from Lenovo Support Web site at: http://www.lenovo.com/support...
You must retain your proof of purchase to obtain warranty service. For a list of Lenovo Support phone numbers, go to http://www.lenovo.com/support/phone or refer to the Safety, Warranty, and Setup Guide that comes with your computer.
• Consult an authorized dealer or service representative for help. Lenovo is not responsible for any radio or television interference caused by using other than specified or recommended cables and connectors or by unauthorized changes or modifications to this equipment.
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Geräte der Klasse B. Dieses Gerät ist berechtigt, in Übereinstimmung mit dem Deutschen EMVG das EG-Konformitätszeichen - CE - zu führen. Verantwortlich für die Konformitätserklärung nach Paragraf 5 des EMVG ist die Lenovo (Deutschland) GmbH, Gropiusplatz 10, D-70563 Stuttgart. Informationen in Hinsicht EMVG Paragraf 4 Abs. (1) 4: Das Gerät erfüllt die Schutzanforderungen nach EN 55024 und EN 55022 Klasse B.
All regulatory notices are available on the Lenovo Support Web site in electronic format. To access electronic copies of the documentation, go to http://www.lenovo.com/support and click User Guides & Manuals.
Collecting and recycling a disused Lenovo computer or monitor If you are a company employee and need to dispose of a Lenovo computer or monitor that is the property of the company, you must do so in accordance with the Law for Promotion of Effective Utilization of Resources.
If you need to replace it with a new one, contact your place of purchase or contact Lenovo for service. If you need to dispose of a disused lithium battery, insulate it with vinyl tape, contact your place of purchase or an industrial-waste-disposal operator, and follow their instructions.
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Customer participation is important to minimize any potential effects of batteries and accumulators on the environment and human health due to the potential presence of hazardous substances. For proper collection and treatment, go to: http://www.lenovo.com/recycling Appendix B. WEEE and recycling information...
(RoHS) European Union RoHS Lenovo products sold in the European Union, on or after 3 January 2013 meet the requirements of Directive 2011/65/EU on the restriction of the use of certain hazardous substances in electrical and electronic equipment (“RoHS recast” or “RoHS 2”).
For more information about ENERGY STAR, go to: http://www.energystar.gov Lenovo encourages you to make efficient use of energy an integral part of your day-to-day operations. To help in this endeavor, set the following power-management features to take effect when your computer has been inactive for a specified duration: Table 2.
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3. Follow the instructions on the screen. ThinkCentre M79 Hardware Maintenance Manual...
Lenovo representative for information on the products and services currently available in your area. Any reference to a Lenovo product, program, or service is not intended to state or imply that only that Lenovo product, program, or service may be used. Any functionally equivalent product, program, or service that does not infringe any Lenovo intellectual property right may be used instead.
Trademarks The following terms are trademarks of Lenovo in the United States, other countries, or both: Lenovo The Lenovo logo Rescue and Recovery ThinkCentre ThinkVantage Microsoft, Windows, and Windows Media are trademarks of the Microsoft group of companies. Intel is a trademark of Intel Corporation in the U.S. and/or other countries.
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Self-service CRUs parts replacement, completing serial connector password service Administrator and help considerations customer support center Hard disk getting Power-on password services setting, changing, deleting other passwords purchasing additional erasing setting lost or forgotten password ThinkCentre M79 Hardware Maintenance Manual...