Electrical safety CAUTION: Electrical current from power, telephone, and communication cables can be hazardous. To avoid personal injury or equipment damage, disconnect the attached power cords, telecommunication systems, networks, and modems before you open the computer covers, unless instructed otherwise in the installation and configuration procedures.
• Do not service the following parts with the power on when they are removed from their normal operating places in a machine: – Power supply units – Pumps – Blowers and fans – Motor generators and similar units. (This practice ensures correct grounding of the units.) •...
8. Check that the power-supply cover fasteners (screws or rivets) have not been removed or tampered with. Handling electrostatic discharge-sensitive devices Any computer part containing transistors or integrated circuits (ICs) should be considered sensitive to electrostatic discharge (ESD). ESD damage can occur when there is a difference in charge between objects. Protect against ESD damage by equalizing the charge so that the machine, the part, the work mat, and the person handling the part are all at the same charge.
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• Italian • Korean • Spanish DANGER Electrical current from power, telephone and communication cables is hazardous. To avoid a shock hazard: • Do not connect or disconnect any cables or perform installation, maintenance, or reconfiguration of this product during an electrical storm. •...
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CAUTION: When laser products (such as CD-ROMs, DVD-ROM drives, fiber optic devices, or transmitters) are installed, note the following: • Do not remove the covers. Removing the covers of the laser product could result in exposure to hazardous laser radiation. There are no serviceable parts inside the device. •...
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≥18 kg (37 lb) ≥32 kg (70.5 lb) ≥55 kg (121.2 lb) M75s-1 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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Quando produtos a laser (como unidades de CD-ROMs, unidades de DVD-ROM, dispositivos de fibra ótica ou transmissores) estiverem instalados, observe o seguinte: • Não remova as tampas. A remoção das tampas de um produto a laser pode resultar em exposição prejudicial à...
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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.
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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 4.
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≥18 kg (37 lb) ≥32 kg (70.5 lb) ≥55 kg (121.2 lb) ATTENTION: Soulevez la machine avec précaution. ATTENTION: L'interrupteur de contrôle d'alimentation de l'unité et l'interrupteur dubloc d'alimentation ne coupent pas le courant électrique alimentantl'unité. En outre, le système peut être équipé de plusieurs cordonsd'alimentation.
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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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Laserstrahlung bei geöffneter Verkleidung. Nicht in den Strahl blicken. Keine Lupen oder Spiegel verwenden. Strahlungsbereich meiden. ≥18 kg ≥32 kg ≥55 kg ACHTUNG: Arbeitsschutzrichtlinien beim Anheben der Maschine beachten. ACHTUNG: Mit dem Netzschalter an der Einheit und am Netzteil wird die Stromversorgung für die Einheit nicht unterbrochen.
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PERICOLO La corrente elettrica proveniente dai cavi di alimentazione, del telefono e di comunicazione può essere pericolosa. Per evitare il rischio di scosse elettriche: M75s-1 Hardware Maintenance Manual...
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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. • Collegare alle prese elettriche appropriate tutte le apparecchiature che verranno utilizzate per questo prodotto.
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• 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. • L'utilizzo di controlli, regolazioni o l'esecuzione di procedure non descritti nel presente manuale possono provocare l'esposizione a radiazioni pericolose.
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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. •...
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• 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.
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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...
Dynamic Configure To Order (CTO) model This model provides the ability for a customer to configure a Lenovo solution from a Web site, and have this configuration sent to fulfillment, where it is built and shipped directly to the customer. The machine label and eSupport will load these products as the 4-character MT, 4-character model, and 2-character country code.
Note: You are responsible for evaluating, selecting, and implementing the locking device and security feature. Lenovo makes no comments, judgments, or warranties about the function, quality, or performance of the locking device and security feature. You can purchase computer locks from Lenovo.
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Padlock Locking the computer cover through a padlock prevents unauthorized access to the inside of your computer. Kensington-style cable lock Lock your computer to a desk, table, or other fixtures through a Kensington-style cable lock. Chapter 3 Product overview...
– If it has been working, what changes were made prior to its failing? – Is this the original reported failure? • Diagnostics version – Type and version level • Hardware configuration – Print (print screen) configuration currently in use –...
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.
POST error codes Each time you turn on the system, it performs a series of tests that check the operation of the system and some options. This series of tests are called the Power-On Self-Test, or POST. POST checks the following operations: •...
8998 Not enough shadow RAM resources This error message is displayed for OPTION ROM, not all devices when the shadow RAM resources initialized. Suggest to remove some for option ROM are insufficient. add-on cards, or change to UEFI If the legacy option ROM is mode in BIOS setup.
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Message/Symptom FRU/Action Diskette drive in-use light remains on or does not light 1. Diskette Drive when drive is active. 2. System Board 3. Diskette Drive Cable Blank screen except for flashing cursor. 1. System Board 2. Primary Hard Disk Drive 3.
Message/Symptom FRU/Action RPL computer does not RPL from server 1. Check the startup sequence. 2. Check the network adapter LED status. Serial or parallel connector device failure (system board 1. External Device Self-Test OK? connector) 2. External Device 3. Cable 4.
4. Run the diagnostic program. See “Diagnostics” on page 49. 5. Recover your operating system. See “Recovery” on page 50. 6. If the problem persists, contact Lenovo. Troubleshooting Use the troubleshooting information to find solutions to problems that have definite symptoms.
Startup problems Problem Solution • Ensure that the power cord is correctly connected to the rear of the computer and to a working electrical outlet. • If the computer has a secondary power switch on the rear of the The computer does not start up when you computer, ensure that it is switched on.
Audio problems Problem Solution • If you are using powered external speakers that have an On/Off control, ensure that: – The On/Off control is set to the On position. – The speaker power cable is connected to a properly grounded, functional ac electrical outlet.
Network problems Note: The Wi-Fi and Bluetooth features are optional. Problem Solution • Connect the cable from the Ethernet connector to the RJ45 connector of the hub. • Enable the Ethernet LAN feature in UEFI BIOS. • Enable the Ethernet LAN adapter. 1.
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Problem Solution • Enable the Bluetooth feature in UEFI BIOS. • Enable all Bluetooth devices. 1. Right-click the Start button to open the Start context menu. 2. Click Device Manager. Type the administrator password or provide confirmation if prompted. 3. Expand Bluetooth to display all Bluetooth devices. Right-click each Bluetooth device, and then click Enable device.
Performance problems Problem Solution 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. Close any open programs and windows. 2. Open the Start menu. Excessive fragmented files exist on the 3.
Storage drive problems Problem Solution • Ensure that the signal cables and power cables for all the storage drives are connected correctly. • Ensure that the computer is configured correctly to support the storage drives. Some or all storage drives are missing from –...
Problem Solution • Disable any background programs, such as AntiVirus or Desktop The playback is slow or choppy. Themes. • Ensure that video resolution is less than 1152 x 864 pixels. • Ensure that the disc is in the drive with the shiny side of the disc facing down.
Use diagnostic solutions to test hardware components and report operating-system-controlled settings that interfere with the correct operation of your computer. Lenovo diagnostic tools This section introduces a set of Lenovo diagnostic tools. For more information, go to: https://pcsupport.lenovo.com/lenovodiagnosticsolutions UEFI diagnostic program A UEFI diagnostic program is preinstalled on the computer.
Table 1. Items on the main screen of the UEFI diagnostic program DIAGNOSTICS TOOLS • CPU [1] • SYSTEM INFORMATION [F1] • DISPLAY [2] • BAD BLOCK RECOVERY [F2] • KEYBOARD [3] • SMART INFORMATION [F3] • MEMORY [4] • MOTHERBOARD [5] •...
Windows recovery programs are damaged. If you did not create a recovery USB drive as a precautionary measure, you can contact Lenovo Customer Support Center and purchase one from Lenovo. For a list of the Lenovo Support phone numbers for your country or region, go to: https://pcsupport.lenovo.com/supportphonelist Create a recovery USB drive Attention: The creation process deletes anything stored on the USB drive.
Download and install the latest driver by one of the following methods: • From Lenovo Vantage: Open Lenovo Vantage to check the available update packages. If the latest UEFI BIOS update package is available, follow the on-screen instructions to download and install the package.
Note: The silicone grease can be applied to the surfaces of the microprocessor and heat sink to eliminate air gaps. The hexagonal socket is used to pick up the antenna connectors. Major FRUs and CRUs Your computer contains the following types of CRUs and FRUs: •...
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Description Self-service CRU Optional-service CRU Heat sink and fan assembly Heat sink fan duct * for selected models For detailed FRU and CRU information, such as the FRU part numbers and supported computer models, go http://www.lenovo.com/serviceparts-lookup M75s-1 Hardware Maintenance Manual...
M.2 Wi-Fi card slot PCI Express x16 graphics card slot System fan connector Removing and installing hardware This section provides instructions on how to remove and install hardware for your computer. You can expand the capabilities of your computer and maintain your computer by removing or installing hardware. Attention: Do not open your computer or attempt any repair before reading and understanding the Chapter 1 “Important safety information”...
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5. Disassemble the vertical stand. 6. Assemble the vertical stand. Chapter 6 Hardware removal and installation...
7. Install the vertical stand. 8. Reconnect the power cord and all disconnected cables to the computer. Note: If a locking device is available, use it to lock the computer. Dust shield Prerequisite Before you start, read Chapter 1 “Important safety information” on page 1 and print the following instructions.
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5. Remove the dust shield. 6. Install the dust shield. 7. Reinstall all the removed parts. Then, reconnect the power cord and all disconnected cables to the computer. Note: If a locking device is available, use it to lock the computer. Chapter 6 Hardware removal and installation...
Computer cover Prerequisite Before you start, read Chapter 1 “Important safety information” on page 1 and print the following instructions. Before you open the computer cover, turn off the computer and wait several minutes until the computer is cool. Replacement procedure 1.
8. Install the computer cover. 9. Place the computer in an upright position. 10. Reinstall all the removed parts. Then, reconnect the power cord and all disconnected cables to the computer. Note: If a locking device is available, use it to lock the computer. Front bezel Prerequisite Before you start, read Chapter 1 “Important safety information”...
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3. Remove the front bezel. 4. Install the front bezel. 5. Reinstall all the removed parts. 6. Place the computer in an upright position. Then, reconnect the power cord and all disconnected cables to the computer. Note: If a locking device is available, use it to lock the computer. M75s-1 Hardware Maintenance Manual...
Optical drive Prerequisite Before you start, read Chapter 1 “Important safety information” on page 1 and print the following instructions. Before you open the computer cover, turn off the computer and wait several minutes until the computer is cool. Replacement procedure 1.
7. Install the optical drive bracket. 8. Install the optical drive. 9. Connect the signal cable and the power cable to the new optical drive. 10. Reinstall all the removed parts. 11. Place the computer in an upright position. Then, reconnect the power cord and all disconnected cables to the computer.
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Replacement procedure 1. Lay down the computer so that the computer cover facing up. 2. Remove the computer cover. See “Computer cover” on page 62. 3. Remove the front bezel. See “Front bezel” on page 63. 4. Pivot the drive bay assembly upward. 5.
Note: If a locking device is available, use it to lock the computer. Primary storage drive (a 2.5-inch or 3.5-inch storage drive) Prerequisite Before you start, read Chapter 1 “Important safety information” on page 1 and print the following instructions. Before you open the computer cover, turn off the computer and wait several minutes until the computer is cool.
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6. Remove the primary storage drive. 7. Remove the 3.5-inch primary storage drive from the primary storage drive bracket. Note: If you replace the 2.5-inch primary storage drive, skip this step. Chapter 6 Hardware removal and installation...
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8. Install the 3.5-inch primary storage drive to primary storage drive bracket. Note: If you replace the 2.5-inch primary storage drive, skip this step. 9. Remove the 2.5-inch primary storage drive from the storage converter. Note: If you replace the 3.5-inch primary storage drive, skip this step. M75s-1 Hardware Maintenance Manual...
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10. Install the 2.5-inch primary storage drive to the storage converter. Note: If you replace the 3.5-inch primary storage drive, skip this step. 11. Install the primary storage drive. 12. Connect the signal cable and the power cable to the new primary storage drive. 13.
2.5-inch secondary storage drive Prerequisite Before you start, read Chapter 1 “Important safety information” on page 1 and print the following instructions. Before you open the computer cover, turn off the computer and wait several minutes until the computer is cool.
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6. Remove the outer 2.5-inch secondary storage drive bracket. 7. Remove the inner 2.5-inch secondary storage drive bracket. 8. Remove the 2.5-inch secondary storage drive. Chapter 6 Hardware removal and installation...
12. Connect the signal cable and the power cable to the new 2.5-inch secondary storage drive. 13. Reinstall all removed parts. 14. Place the computer in an upright position. Then, reconnect the power cord and all disconnected cables to the computer. Note: If a locking device is available, use it to lock the computer.
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Replacement procedure 1. Lay down the computer so that the computer cover facing up. 2. Remove the computer cover. See “Computer cover” on page 62. 3. Remove the front bezel. See “Front bezel” on page 63. 4. Pivot the drive bay assembly upward. See “Pivot the drive bay assembly upward and downward” on page 66.
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• Insert the stopper. 7. Refer to the following steps to replace the type 2 M.2 solid-state drive. • Pull out the stopper. • Remove the M.2 solid-state drive. Chapter 6 Hardware removal and installation...
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• Install the M.2 solid-state drive. • Insert the stopper. 8. Reinstall all removed parts. 9. Place the computer in an upright position. Then, reconnect the power cord and all disconnected cables to the computer. Note: If a locking device is available, use it to lock the computer. M75s-1 Hardware Maintenance Manual...
If the coin-cell battery is incorrectly replaced, there is danger of an explosion. The coin-cell battery contains a small amount of harmful substance. To avoid possible injury: • Replace only with a battery of the type recommended by Lenovo. • Keep the battery away from fire.
6. Install the coin-cell battery. 7. Reinstall all removed parts. 8. Place the computer in an upright position. Then, reconnect the power cord and all disconnected cables to the computer. Note: If a locking device is available, use it to lock the computer. Memory module Prerequisite Before you start, read Chapter 1 “Important safety information”...
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Replacement procedure 1. Lay down the computer so that the computer cover facing up. 2. Remove the computer cover. See “Computer cover” on page 62. 3. Remove the front bezel. See “Front bezel” on page 63. 4. Pivot the drive bay assembly upward. See “Pivot the drive bay assembly upward and downward” on page 66.
7. Reinstall all removed parts. 8. Place the computer in an upright position. Then, reconnect the power cord and all disconnected cables to the computer. Note: If a locking device is available, use it to lock the computer. PCI Express card Prerequisite Before you start, read Chapter 1 “Important safety information”...
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Note: If the card is held in place by a retaining latch, press the latch as shown to disengage the latch. Then, gently remove the card from the slot. 5. Install the PCI Express card. 6. Reinstall all removed parts. 7.
Wi-Fi card Prerequisite Before you start, read Chapter 1 “Important safety information” on page 1 and print the following instructions. Before you open the computer cover, turn off the computer and wait several minutes until the computer is cool. Replacement procedure 1.
9. Reconnect the antenna cables to the Wi-Fi card, and install the screw to secure the Wi-Fi card. 10. Install the Wi-Fi card shield. 11. Reinstall all removed parts. 12. Place the computer in an upright position. Then, reconnect the power cord and all disconnected cables to the computer.
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Although there are no moving parts in the computer after the power cord has been disconnected, the following warnings are required for your safety and proper Underwriters Laboratories (UL) certification. CAUTION: Hazardous moving parts. Keep fingers and other body parts away. CAUTION: Never remove the cover on a power supply or any part that has the following label attached.
6. Install the power supply assembly. 7. Reinstall all removed parts. 8. Place the computer in an upright position. Then, reconnect the power cord and all disconnected cables to the computer. Note: If a locking device is available, use it to lock the computer. Power button board and card reader Prerequisite Before you start, read Chapter 1 “Important safety information”...
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Before you open the computer cover, turn off the computer and wait several minutes until the computer is cool. Replacement procedure 1. Lay down the computer so that the computer cover facing up. 2. Remove the computer cover. See “Computer cover” on page 62. 3.
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8. Remove the card reader. 9. Install the card reader. 10. Install the card reader bracket. Chapter 6 Hardware removal and installation...
11. Install the power button board. 12. Install the front I/O bracket. 13. Connect the new power button board cable and the new card reader cable to the system board. 14. Reinstall all removed parts. 15. Place the computer in an upright position. Then, reconnect the power cord and all disconnected cables to the computer.
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Before you open the computer cover, turn off the computer and wait several minutes until the computer is cool. Replacement procedure 1. Lay down the computer so that the computer cover facing up. 2. Remove the computer cover. See “Computer cover” on page 62. 3.
9. Install the ThinkCentre LED cover. 10. Connect the new ThinkCentre LED cable to the system board. 11. Pivot the drive bay assembly downward, and reinstall the removed parts. 12. Place the computer in an upright position. Then, reconnect the power cord and all disconnected cables to the computer.
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Replacement procedure 1. Lay down the computer so that the computer cover facing up. 2. Remove the computer cover. See “Computer cover” on page 62. 3. Remove the front bezel. See “Front bezel” on page 63. 4. Disconnect the internal speaker cable from the system board. 5.
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8. Install the internal speaker. 9. Pivot the drive bay assembly downward. M75s-1 Hardware Maintenance Manual...
10. Connect the new internal speaker cable to the system board. 11. Reinstall all removed parts. 12. Place the computer in an upright position. Then, reconnect the power cord and all disconnected cables to the computer. Note: If a locking device is available, use it to lock the computer. Thermal sensor Prerequisite Before you start, read Chapter 1 “Important safety information”...
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7. Remove the thermal sensor. 8. Install the thermal sensor. M75s-1 Hardware Maintenance Manual...
9. Pivot the drive bay assembly downward. 10. Connect the new thermal sensor cable to the system board. 11. Reinstall all removed parts. 12. Place the computer in an upright position. Then, reconnect the power cord and all disconnected cables to the computer.
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Before you open the computer cover, turn off the computer and wait several minutes until the computer is cool. Replacement procedure 1. Lay down the computer so that the computer cover facing up. 2. Remove the computer cover. See “Computer cover” on page 62. 3.
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8. Install the rear Wi-Fi antenna. 9. Connect the new Wi-Fi antenna cables to the Wi-Fi card. 10. Reinstall all removed parts. 11. Place the computer in an upright position. Then, reconnect the power cord and all disconnected cables to the computer. Note: If a locking device is available, use it to lock the computer.
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2. Remove the computer cover. See “Computer cover” on page 62. 3. Remove the front bezel. See “Front bezel” on page 63. 4. Pivot the drive bay assembly upward. See “Pivot the drive bay assembly upward and downward” on page 66. 5.
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9. Install the heat sink fan duct. 10. Connect the new microprocessor fan cable to the system board. 11. Pivot the drive bay assembly downward, and reinstall the removed parts. 12. Place the computer in an upright position. Then, reconnect the power cord and all disconnected cables to the computer.
Microprocessor Prerequisite Before you start, read Chapter 1 “Important safety information” on page 1 and print the following instructions. Before you open the computer cover, turn off the computer and wait several minutes until the computer is cool. Replacement procedure 1.
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9. Install the microprocessor. 10. Secure the retainer with the handle. 11. Route all the cables that you disconnected from the system board, and then reconnect the cables to the system board. Chapter 6 Hardware removal and installation...
12. Pivot the drive bay assembly downward, and reinstall the removed parts. 13. Place the computer in an upright position. Then, reconnect the power cord and all disconnected cables to the computer. Note: If a locking device is available, use it to lock the computer. Cover presence switch Prerequisite Before you start, read Chapter 1 “Important safety information”...
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6. Connect the new cover presence switch cable to the system board. 7. Reinstall all removed parts. 8. Place the computer in an upright position. Then, reconnect the power cord and all disconnected cables to the computer. Note: If a locking device is available, use it to lock the computer. System board Prerequisite Before you start, read Chapter 1 “Important safety information”...
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• Do not touch the pins on the microprocessor socket or the gold contacts on the microprocessor. System board replacement procedure 1. Remove the computer cover. See “Computer cover” on page 62. 2. Remove the front bezel. See “Front bezel” on page 63. 3.
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13. Remove the microprocessor from the failing system board, and then install it onto the new system board. 14. Install the new system board into the chassis by aligning the nine screw holes in the new system board with the corresponding mounting studs on the chassis. Then, install the nine screws in the sequence as shown to secure the new system board.
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16. Connect all cables to the new system board. See “System board” on page 57. 17. Connect the external cables and the power cord to the computer. The failing system board must be returned with a microprocessor socket cover to protect the pins during shipping and handling.
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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Actual results may vary. Users of this document should verify the applicable data for their specific environment. This document is copyrighted by Lenovo and is not covered by any open source license, including any Linux agreement(s) which may accompany software included with this product. Lenovo may update this document at any time without notice.