Important: This manual is intended only for trained service technicians who are familiar with Lenovo computers. Use this manual along with the advanced diagnostic tests to troubleshoot problems effectively. Before servicing a Lenovo computer, be sure to read and understand Chapter 1 “Read this first: Important safety information” on page 1.
• Place removed covers and other parts in a safe place, away from all personnel, while you are servicing the machine. • Keep your tool case away from walk areas so that other people will not trip over it. • Do not wear loose clothing that can be trapped in the moving parts of a machine. Ensure that your sleeves are fastened or rolled up above your elbows.
• Find the room emergency power-off (EPO) switch, disconnecting switch, or electrical outlet. If an electrical accident occurs, you can then operate the switch or unplug the power cord quickly. • Do not work alone under hazardous conditions or near equipment that has hazardous voltages. •...
Safety inspection guide The intent of this inspection guide is to assist you in identifying potentially unsafe conditions on these products. Each machine, as it was designed and built, had required safety items installed to protect users and service personnel from injury. This guide addresses only those items. However, good judgment should be used to identify potential safety hazards due to attachment of features or options not covered by this inspection guide.
• Wear a grounded wrist strap against your skin to eliminate static on your body. • Prevent the part from touching your clothing. Most clothing is insulative and retains a charge even when you are wearing a wrist strap. • Use the black side of a grounded work mat to provide a static-free work surface. The mat is especially useful when handling ESD-sensitive devices.
• Connect to properly wired outlets any equipment that will be attached to this product. • When possible, use one hand only to connect or disconnect signal cables. • Never turn on any equipment when there is evidence of fire, water, or structural damage. •...
≥18 kg (37 lb) ≥32 kg (70.5 lb) ≥55 kg (121.2 lb) CAUTION: Use safe practices when lifting. CAUTION: 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 cord.
≥18 kg (37 lb) ≥32 kg (70.5 lb) ≥55 kg (121.2 lb) PERIGO A corrente elétrica proveniente de cabos de alimentação, de telefone e de comunicações é perigosa. Chapter 1 Read this first: Important safety information...
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. • Conecte todos os cabos de alimentação a tomadas elétricas corretamente instaladas e aterradas. •...
• A utilização de controles ou ajustes ou a execução de procedimentos diferentes dos especificados aqui pode resultar em exposição prejudicial à radiação. PERIGO Alguns produtos a laser contêm diodo de laser integrado da Classe 3A ou da Classe 3B. Observe o seguinte: Radiação a laser quando aberto.
DANGER Le courant électrique provenant de l'alimentation, du téléphone et des câbles de transmission peut présenter un danger. Pour éviter tout risque de choc électrique : • Ne manipulez aucun câble et n'effectuez aucune opération d'installation, d'entretien ou de reconfiguration de ce produit au cours d'un orage.
ATTENTION: Si des produits à laser (tels que des unités de CD-ROM, de DVD-ROM, des unités à fibres optiques, ou des émetteurs) sont installés, prenez connaissance des informations suivantes : • Ne retirez pas le carter. En ouvrant l'unité de CD-ROM ou de DVD-ROM, vous vous exposez au rayonnement dangereux du laser.
VORSICHT An Netz-, Telefon- und Datenleitungen können gefährliche Spannungen anliegen. Aus Sicherheitsgründen: • Bei Gewitter an diesem Gerät keine Kabel anschließen oder lösen. Ferner keine Installations-, Wartungs- oder Rekonfigurationsarbeiten durchführen. • Gerät nur an eine Schutzkontaktsteckdose mit ordnungsgemäß geerdetem Schutzkontakt anschließen.
• über 100 C erhitzen. • reparieren oder zerlegen. Die örtlichen Bestimmungen für die Entsorgung von Sondermüll beachten. ACHTUNG: Bei der Installation von Lasergeräten (wie CD-ROM-Laufwerken, DVD- aufwerken, Einheiten mit Lichtwellenleitertechnik oder Sendern) Folgendes beachten: • Die Abdeckungen nicht entfernen. Durch Entfernen der Abdeckungen des Lasergeräts können gefährliche Laserstrahlungen freigesetzt werden.
Chapter 1 Read this first: Important safety information...
PERICOLO La corrente elettrica proveniente dai cavi di alimentazione, del telefono e di comunicazione può essere pericolosa. Per evitare il rischio di scosse elettriche: • Non collegare o scollegare qualsiasi cavo oppure effettuare l'installazione, la manutenzione o la riconfigurazione del prodotto durante un temporale. •...
ATTENZIONE: Quando vengono installati prodotti laser (quali CD-ROM, unità DVD-ROM, unità a fibre ottiche o trasmittenti), tener presente quanto segue: • Non rimuovere gli sportelli. L'apertura di un'unità laser può determinare l'esposizione a radiazioni laser pericolose. All'interno dell'unità non vi sono parti su cui effettuare l'assistenza tecnica. •...
Chapter 1 Read this first: Important safety information...
PELIGRO La corriente eléctrica procedente de cables de alimentación, teléfonos y cables de comunicación puede ser peligrosa. Para evitar el riesgo de descarga eléctrica: • No conecte ni desconecte los cables ni realice ninguna tarea de instalación, mantenimiento o reconfiguración de este producto durante una tormenta eléctrica. •...
• No encienda nunca un equipo cuando hay señales de fuego, agua o daños estructurales. • 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.
Algunos productos láser tienen incorporado un diodo láser de clase 3A o clase 3B. Tenga en cuenta lo siguiente: Cuando se abre, queda expuesto a radiación láser. No mire directamente al rayo láser, ni siquiera con instrumentos ópticos, y evite exponerse directamente al rayo láser. ≥18 kg ≥32 kg ≥55 kg...
Power indicator Storage drive activity indicator Internal speakers (2) • Brightness-down control Used to reduce the screen brightness. • Brightness-up control Used to enhance the screen brightness. • Integrated camera Used to take pictures or hold a video conference. • Integrated camera activity indicator When the integrated camera activity indicator is on, the camera is in use.
If you want to use the computer with the stand removed, do not turn on the computer before contacting the Lenovo Customer Support Center for the additional thermal solution. • If your computer does not come with a computer stand, do not tear off the Mylar on the rear of the computer.
• Card reader slot Used to hold a card-shaped storage medium so that the card reader can read the data on the storage medium. • DisplayPort in/out connector Used to receive or send audio and video signals. When a high-performance monitor is attached to this connector, the computer automatically changes to the computer mode.
Computer components Note: Depending on your computer model, some of the following components might not be available. Figure 3. Computer components Tilt-only monitor stand base UltraFlex II Stand Tilt-only monitor stand Back cover Memory module Memory module shield Storage drive Storage drive bracket Power cord Major FRUs and CRUs...
Figure 4. Major FRUs and CRUs The following table lists the major FRUs shown in the illustration above and identifies which FRUs are also self-service CRUs or optional-service CRUs. Notes: • Self-service CRUs: These CRUs unplug or are secured by no more than two screws. Examples of these types of CRUs include the keyboard, the mouse, any USB device, and the power cord.
Number FRU description Self-service CRU Optional-service CRU Storage drive bracket System fan Control button board For detailed FRU information, such as the FRU part numbers and supported computer models, go to: http:/www.lenovo.com/serviceparts-lookup ThinkCentre M900z Hardware Maintenance Manual...
Parts on the system board Note: For the parts that are displayed on the following figure but not introduced in the following table, see “Front view” on page 27 and “Rear view” on page 29. Figure 5. Parts on the system board LCD power connector Integrated camera connector Microprocessor socket...
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 side of your computer as shown.
Your computer is preinstalled with Windows 7 or Windows 10 operating system. Additional operating systems might be identified by Lenovo as compatible with your computer. To determine if an operating system has been certified or tested for compatibility, check the Web site of the operating system provider.
Security features For more information, see Chapter 5 “Security” on page 59. System management features • Ability to store power-on self-test (POST) hardware test results • Desktop Management Interface (DMI) Desktop Management Interface provides a common path for users to access information about all aspects of a computer.
Accessing a program on your computer Note: For Windows 7, depending on your computer model, 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.
An introduction to Lenovo programs This section provides information about the major Lenovo programs available on your operating system. Note: Depending on your computer model, some of the following programs might not be available.
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.
If you want to use the computer with the stand removed, do not turn on the computer before contacting the Lenovo Customer Support Center for the additional thermal solution. • If your computer does not come with a computer stand, do not tear off the Mylar on the rear of the computer.
You can manage cables (such as cables of the keyboard and mouse) by routing the cables through the cable loop on the stand as shown. Figure 8. Cable loop on the tilt-only monitor stand Adjusting the UltraFlex II Stand You can use the UltraFlex II Stand to adjust the computer by doing the following: 1.
2. After you adjust your computer to the rear, you can adjust the UltraFlex II Stand downward within a range of 59° as shown. Figure 10. Adjusting the UltraFlex II Stand downward 3. You can adjust the angle of the computer between 45° to the left and 45° to the right as shown. Figure 11.
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.
3. If the icon is still not displayed in the Windows notification area, repeat step 1. Using a disc This section provides information about using a disc and the optical drive. Guidelines about using the optical drive When using the optical drive, follow these guidelines: •...
Note: If the tray does not slide out of the drive when you press the eject/close button, turn off your computer. Then, insert a straightened paper clip into the emergency-eject hole adjacent to the eject/close button. Use the emergency eject only in an emergency. Recording a disc If your optical drive supports recording, you can record a disc.
DANGER To avoid the risk of electrical shock, do not connect the telephone cable to the Ethernet connector. Connecting to a wireless LAN You can connect your computer to a wireless LAN without the use of an Ethernet cable but by means of radio waves only.
• To make it easier to read or edit a document, use two fingers to zoom in, zoom out, scroll, or rotate on the touch screen. ThinkCentre M900z Hardware Maintenance Manual...
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. You also can get the most up-to-date accessibility information from the following Web site: http://www.lenovo.com/accessibility...
Ease of Access Center Ease of Access Center on the Windows operating system enables users to configure their computers to suit their physical and cognitive needs. To use Ease of Access Center, do the following: 1. Click the Start button to open the Start menu. 2.
3. Follow the instructions on the screen. Screen-reader technologies Screen-reader technologies are primarily focused on software program interfaces, help information systems, and various online documents. For additional information about screen readers, see the following: • Using PDFs with screen readers: http://www.adobe.com/accessibility.html?promoid=DJGVE •...
Then, you can type a message on your computer and send it to the telephone. Documentation in accessible formats Lenovo provides electronic documentation in accessible formats, such as properly tagged PDF files or HyperText Markup Language (HTML) files. Lenovo electronic documentation is developed to ensure that visually impaired users can read the documentation through a screen reader.
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.
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: –...
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 13.
• For Windows 7: Use the Fingerprint Manager Pro or ThinkVantage Fingerprint Software program provided by Lenovo. To open the program, see “Accessing a program on your computer” on page 39. For more information about using the program, refer to the help system of the program.
For more information about how to use your antivirus software, refer to the help system of your antivirus software. Computrace Agent software embedded in firmware The Computrace Agent software is an IT asset management and computer theft recovery solution. The software detects if changes have been made on the computer, such as hardware, software, or the computer call-in location.
Enabling or disabling 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.
Enabling or disabling the ICE Thermal Alert feature If you enable the ICE thermal alert feature, when critical thermal situations occur, such as malfunctioning fans, abnormally high temperature, or poor cooling performances, an alert log will be written into the Windows system log.
Using BIOS passwords By using the Setup Utility program, you can set passwords to prevent unauthorized access to your computer and data. You do not have to set any passwords to use your computer. However, using passwords improves computer security. If you decide to set any passwords, read the following topics. Setup Utility program password types The following types of passwords are available: •...
3. Depending on the password type, select Set Power-On Password, Set Administrator Password, or Hard Disk Password and press Enter. 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”...
To update the BIOS, do the following: 1. Go to http://www.lenovo.com/drivers. 2. Download the flash BIOS update driver for the operating system version or the ISO image version (used to create a flash update disc). Then, download the installation instructions for the flash BIOS update driver you download.
5. Recover your operating system. See “Recovery information” on page 79. 6. If none of these actions solve your problem, contact the Lenovo Customer Support Center. For a list of Lenovo Support phone numbers, go to http://www.lenovo.com/support/phone. For more information about help, service, and technical assistance, see Chapter 10 “Getting information, help, and service”...
• If your computer has a secondary power switch on the rear of the computer, ensure that it is switched on. • The power indicator on the front of the computer is on. • The computer voltage matches the voltage available at the electrical outlet for your country or region. The operating system fails to start up Solution: Ensure that the startup sequence includes the device where the operating system resides.
Note: If the volume icon is not displayed in the Windows notification area, add the icon to the notification area. See “Adding an icon to the Windows notification area” on page 46. CD problems This section provides solutions to CD-related problems. A CD or DVD does not work Solutions: •...
Playback is slow or choppy Solutions: • Disable any background programs, such as AntiVirus or Desktop Themes. • Ensure that video resolution is set to less than 1152 x 864 pixels. 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 the storage drive your computer starts up from is listed as the first startup device in the Setup Utility program. Refer to “Changing the startup device sequence permanently” on page 67. Note: In rare cases, the storage drive with the operating system might get corrupted or damaged. In such cases, you might need to replace the storage drive.
Ethernet LAN problems My computer cannot be connected to an Ethernet LAN Solutions: • Connect the cable from the Ethernet connector to the RJ45 connector of the hub. • Enable the Ethernet LAN feature in the Setup Utility program. See “Starting the Setup Utility program” on page 63.
1. Depending on your Windows version, do one of the following: – For Windows 7: Click the Start button to open the Start menu. – For Windows 10: Right-click the Start button to open the Start context menu. 2. Click Control Panel. View Control Panel using Large icons or Small icons, and then click Network and Sharing Center ➙...
Excessive number of fragmented files Solution: Use the Windows disk defragmentation or disk optimization feature to clean up the files. Note: Depending on the volume of the storage drives and amount of data stored on the storage drives, the disk-defragmentation process might take up to several hours. 1.
• Detach and reconnect the USB connector to reset the USB device. I cannot install the Windows 7 operating system using an external USB device Solution: Go to http://www.lenovo.com/support to download and install USB drivers. Software and driver problems This section provides solutions to software- and driver-related problems.
If you are unable to isolate and repair the problem yourself after running Lenovo Solution Center, save and print the log files created by the program. You might need the log files when you speak to a Lenovo technical support representative.
Recovery information This section provides instructions about how to recover your operating system. Note: If a device does not work normally after recovering the operating system, update the device driver. See “Keeping your computer current” on page 56. Recovery information for Windows 7 To recover your Windows 7 operating system, use the following solutions: •...
67. 2. Follow the instructions on the screen to choose the appropriate recovery solution. • Use the recovery disc set provided by Lenovo to restore the entire storage drive to the factory-default settings. – If your computer comes with the recovery disc set, follow the instructions shipped with the disc set.
“Undetermined problems” on page 86. Notes: • The Symptom-to-FRU index is not specific to any machine type and are applicable to all Lenovo computers. • If you have both an error message and an incorrect audio response, diagnose the error message first.
Error FRU/Action The boot sector on the startup drive is corrupted. The drive must be formatted. Do the following: 1. Attempt to back up the data on the failing hard disk drive. 2. Using the operating system programs, format the hard disk drive.
If the POST detects a problem, an error message appears on the screen. A single problem can cause several error messages to appear. When you correct the cause of the first error message, the other error messages probably will not be displayed next time you turn on the system. Error code POST error message Description/Action...
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”...
Message/Symptom FRU/Action Program loads from the hard disk with a known-good 1. Run the Setup Utility program and check Startup diagnostics diskette in the first 3.5-inch diskette drive sequence. 2. Diskette Drive 3. Diskette Drive Cable 4. System Board 5. Power Supply RPL computer cannot access programs from its own hard 1.
• When installing or replacing an option, use the appropriate instructions in this section along with the instructions that come with the option. • In most areas of the world, Lenovo requires the return of the defective CRU. Information about this will come with the CRU or will come a few days after the CRU arrives.
Use the instructions shipped with the option to help you make the connection and install any software or device drivers that are required for the option. Replacing the computer stand Attention: Do not open your computer or attempt any repair before reading and understanding the Chapter 1 “Read this first: Important safety information”...
5. Insert the screw on the base into the corresponding hole in the new tilt-only monitor stand. Then, tighten the screw to secure the monitor stand. Figure 16. Installing the tilt-only monitor stand to the base 6. Insert the two hooks on the new tilt-only monitor stand into the corresponding holes in the computer cover as shown.
3. Press the retaining latch on the UltraFlex II Stand as shown to disengage the latch. Then, remove the UltraFlex II Stand from the computer cover. Figure 18. Removing the UltraFlex II Stand from the computer cover 4. Insert the two hooks on the new UltraFlex II Stand into the corresponding holes in the computer cover as shown.
3. Place a soft, clean towel or cloth on the desk or surface. Hold the sides of your computer and gently lay it down so that the screen is against the surface and the computer cover is facing up. 4. Remove the computer stand. See “Replacing the computer stand” on page 88. 5.
5. Insert the straight edge of the new memory module shield into the hole as shown. Then, pivot it downward until it snaps into position. Figure 22. Installing the memory module shield What to do next: • To work with another piece of hardware, go to the appropriate section. •...
5. Insert the notched end of the new memory module into the slot . Press the memory module firmly and pivot the memory module until it snaps into position. Ensure that the memory module is secured in the slot and does not move easily. Figure 24.
6. Flex the sides of the storage drive bracket to remove the storage drive from the bracket. Figure 26. Removing the storage drive from the bracket 7. Flex the sides of the storage drive bracket and insert the four pins on the bracket into the corresponding holes in the new storage drive.
9. Insert the two tabs on the storage drive bracket into the corresponding holes in the chassis. Then, pivot the storage drive bracket downward until it snaps into position. Figure 28. Installing the storage drive bracket and the storage drive What to do next: •...
4. Loosen the screw that secures the optical drive, and then push the optical drive out of the bay with a screwdriver. Figure 29. Removing the optical drive Note: If you are replacing the optical drive, remove the two screws that secure the optical drive holder, and then remove the holder from the optical drive.
6. Pivot the two tabs on the side I/O cover upward, and then remove the side I/O cover from the chassis as shown. Figure 31. Removing the side I/O cover 7. Loosen the two screws that secure the computer cover, and then press the computer cover downward to disengage the three tabs from the chassis.
8. Remove the two screws that secure the control button board, and then remove the control button board from the computer cover. Figure 33. Removing the control button board 9. Align the two holes in the control button board with the corresponding screw holes in the new computer cover.
6. Remove the two screws that secure the side I/O bracket, and then remove the side I/O bracket from the system board shield. Then, remove the five screws that secure the system board shield, and then remove the system board shield from the chassis. Figure 34.
6. Remove the four screws that secure the VESA mount bracket, and then lift the VESA mount bracket upward to remove it. Figure 35. Removing the VESA mount bracket 7. Disconnect the cover presence switch cable from the system board. 8.
Replacing the power supply assembly 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. Although there are no moving parts in your computer after the power cord has been disconnected, the following warnings are required for your safety and proper Underwriters Laboratories (UL) certification.
8. Remove the seven screws that secure the power supply assembly, and then remove the power supply assembly from the chassis. Figure 37. Removing the power supply assembly 9. Align the seven holes in the new power supply assembly with the corresponding screw holes in the chassis.
9. Remove the four screws that secure the two internal speakers, and then remove the internal speakers from the chassis. Figure 38. Removing the internal speakers 10. Align the four holes in the two new internal speakers with the corresponding screw holes in the chassis. Then, install the four screws to secure the internal speakers.
9. Lift the thermal sensor out of the chassis. Figure 39. Removing the thermal sensor 10. Insert the new thermal sensor into the corresponding holes in the chassis. 11. Route the thermal sensor cable, and then connect the cable to the system board. See “Parts on the system board”...
8. Remove the three screws that secure the system fan, and then remove the system fan from the chassis. Figure 40. Removing the system fan 9. Align the three holes in the new system fan with the corresponding screw holes in the chassis. Then, install the three screws to secure the system fan.
6. Remove the two screws that secure the integrated camera, and then lift the integrated camera to disconnect the cable from it. Remove the integrated camera from the chassis. Figure 41. Removing the integrated camera 7. Connect the integrated camera cable to the new integrated camera. 8.
7. Tear off the Wi-Fi antennas from the chassis. Figure 42. Removing the Wi-Fi antennas 8. Position the new Wi-Fi antennas over the appropriate position, and then stick them onto the chassis. 9. Route the the Wi-Fi antenna cables, and then connect the cables to the Wi-Fi card. See “Replacing the Wi-Fi card”...
6. Loosen the screw that secures the Wi-Fi card, and then remove the Wi-Fi card shield from the chassis. Disconnect the Wi-Fi antenna cables from the Wi-Fi card. Note: The screw cannot be removed from the Wi-Fi card shield. Figure 43. Removing the Wi-Fi card shield and disconnecting the Wi-Fi antenna cables 7.
The coin-cell battery normally requires no charging or maintenance throughout its life; however, no coin-cell battery lasts forever. If the coin-cell battery fails, the date, time, and configuration information (including passwords) are lost. An error message is displayed when you turn on the computer. Refer to the “Lithium coin-cell battery notice”...
Replacing the card reader 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. To replace the card reader, do the following: 1. Remove any media from the drives and turn off all connected devices and the computer. Then, disconnect all power cords from electrical outlets and disconnect all cables that are connected to the computer.
4. Remove the system board shield. See “Replacing the system board shield” on page 98. 5. Locate the serial connector module. See “Major FRUs and CRUs” on page 31. 6. Disconnect the serial connector module cable from the serial connector module. 7.
6. Follow the sequence shown below to loosen screw 1 through screw 5, and then remove the heat sink from the chassis. Notes: a. Carefully remove the five screws from the system board to avoid any possible damage to the system board.
9. Remove the serial connector module. See “Replacing the serial connector module” on page 110. 10. Record the cable routing and cable connections, and then disconnect all cables from the system board. See “Parts on the system board” on page 35. 11.
To install the microprocessor socket cover, do the following: 1. After you have removed the microprocessor from the failing system board, close the microprocessor retainer. Then, put the lever to the locked position to secure the retainer in place. 2. Note the orientation of the socket cover, and install one side of the socket cover into the microprocessor socket.
• Your microprocessor and socket might look different from the one illustrated. • Touch only the edges of the microprocessor. Do not touch the gold contacts on the bottom. • Do not drop anything onto the microprocessor socket while it is exposed. The socket pins must be kept as clean as possible.
13. Close the microprocessor retainer and lock it into position with the small handle to secure the new microprocessor in the socket. 14. Reinstall the heat sink. See “Replacing the heat sink” on page 111. 15. Reinstall the system board shield. See “Replacing the system board shield” on page 98. 16.
User Guide. 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 also can do the following: • Shop for desktop and notebook computers, monitors, projectors, upgrades and accessories for your computer, and special offers.
• Engineering Change management - There might be changes that are required after a product has been sold. Lenovo or your reseller will make selected Engineering Changes (ECs) that apply to your hardware available.
For technical assistance with the installation of or questions related to Service Packs for your preinstalled Microsoft Windows product, go to the Microsoft Product Support Web site at http://support.microsoft.com. You also can contact the Lenovo Customer Support Center for help. Some fees might apply. Purchasing additional services During and after the warranty period, you can purchase additional services.
• 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.
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.
The ac power cord shipped with your product can be used only for this specific product. Do not use the ac power cord for other devices. Lenovo product service information for Taiwan Keyboard and mouse compliance statement for Taiwan Eurasian compliance mark Brazil audio notice Ouvir sons com mais de 85 decibéis por longos períodos pode provocar danos ao sistema auditivo.
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/UserManuals. ThinkCentre M900z Hardware Maintenance Manual...
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.
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...
For more information about Lenovo worldwide compliance on RoHS, go to: http://www.lenovo.com/social_responsibility/us/en/RoHS_Communication.pdf Turkish RoHS The Lenovo product meets the requirements of the Republic of Turkey Directive on the Restriction of the Use of Certain Hazardous Substances in Waste Electrical and Electronic Equipment (WEEE). Ukraine RoHS India RoHS RoHS compliant as per E-Waste (Management &...
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 1.
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.
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