Lenovo ThinkCentre M75s Gen2 Hardware Maintenance Manual
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Lenovo ThinkCentre M75s Gen2 Hardware Maintenance Manual

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Hardware Maintenance Manual

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Summary of Contents for Lenovo ThinkCentre M75s Gen2

  • Page 1 M75s Gen 2 Hardware Maintenance Manual...
  • Page 2 First Edition (November 2020) © Copyright Lenovo 2020. LIMITED AND RESTRICTED RIGHTS NOTICE: If data or software is delivered pursuant to a General Services Administration “GSA” contract, use, reproduction, or disclosure is subject to restrictions set forth in Contract No. GS-...

  • Page 3: Table Of Contents

    Diagnostics ....Handling electrostatic discharge-sensitive Lenovo diagnostic tools ..devices ....4 UEFI diagnostic program .
  • Page 4 Chapter 7. Notices and Heat sink and fan assembly ..trademarks ....81 Microprocessor ... . . Cover presence switch .

  • Page 5: About This Manual

    Important: This manual is intended only for trained service technicians who are familiar with ThinkCentre computers. Use this manual along with the advanced diagnostic tests to troubleshoot problems effectively. Before servicing a ThinkCentre computer, be sure to read and understand Chapter 1 “Important safety information” on page 1. © Copyright Lenovo 2020...
  • Page 6 M75s Gen 2 Hardware Maintenance Manual...

  • Page 7: Chapter 1. Important Safety Information

    Avoid contact with hot components inside the computer. During operation, some components become hot enough to burn the skin. Before you open the computer cover, turn off the computer, disconnect power, and wait approximately 10 minutes for the components to cool. © Copyright Lenovo 2020...

  • Page 8: Electrical Safety

    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.

  • Page 9: Safety Inspection Guide

    • 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.) •...

  • Page 10: Handling Electrostatic Discharge-Sensitive Devices

    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.
  • Page 11 • 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. •...
  • Page 12 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. •...
  • Page 13 Chapter 1 Important safety information...
  • Page 14 ≥18 kg (37 lb) ≥32 kg (70.5 lb) ≥55 kg (121.2 lb) M75s Gen 2 Hardware Maintenance Manual...
  • Page 15 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. •...
  • Page 16 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...
  • Page 17 Chapter 1 Important safety information...
  • Page 18 M75s Gen 2 Hardware Maintenance Manual...
  • Page 19 Chapter 1 Important safety information...
  • Page 20 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.
  • Page 21 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.
  • Page 22 ≥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.
  • Page 23 • 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...
  • Page 24 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.
  • Page 25 Chapter 1 Important safety information...
  • Page 26 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 Gen 2 Hardware Maintenance Manual...
  • Page 27 • 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.
  • Page 28 • 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.
  • Page 29 Chapter 1 Important safety information...
  • Page 30 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. •...
  • Page 31 • 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.
  • Page 32 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...

  • Page 33: Chapter 2. Important Service Information

    • Do not drop a system board or apply any excessive force to it. • Avoid rough handling of any kind. • Avoid bending a system board and hard pushing to prevent cracking at each Ball Grid Array (BGA) chipset. © Copyright Lenovo 2020...

  • Page 34: How To Use Error Codes

    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.

  • Page 35: Chapter 3. Product Overview

    5. Storage drive activity indicator 6. ThinkCentre 7. Microphone connector 8. Headset connector ™ 9. USB-C (3.2 Gen 1) connector 10. USB 3.2 connectors Gen 1 11. USB 3.2 connectors Gen 2 12. Internal speaker * for selected models © Copyright Lenovo 2020...

  • Page 36: Rear

    Rear ® 1. Audio line-out connector 2. DisplayPort out connectors ™ 3. HDMI out connector 4. USB 2.0 connectors 5. USB 2.0 connector (with smart power-on) 6. Security-lock slot 7. Serial connector 8. Ethernet connector 9. Padlock loop 10. E-lock slots 11.

  • Page 37: Chapter 4. Service Checkout And Symptom-To-Fru Index

    • Machine type and model • Processor or hard disk drive upgrades • Failure symptom – Do diagnostics indicate a failure? – What, when, where, single, or multiple systems? – Is the failure repeatable? – Has this configuration ever worked? © Copyright Lenovo 2020...

  • Page 38: Symptom-To-Fru Index

    – 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 –...

  • Page 39: Power Supply Problems

    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.

  • Page 40: Post Error Codes

    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: •...

  • Page 41: Miscellaneous Error Conditions

    Miscellaneous error conditions Message/Symptom FRU/Action Changing display colors Display/Monitor Computer will not power-off. See “Hard disk drive boot 1. Power Switch error” on page 32. 2. System Board 3. Riser card, if installed. Computer will not RPL from server 1. Ensure that the network is in startup sequence as the first device or the first device after diskette.

  • Page 42: Undetermined Problems

    Message/Symptom FRU/Action Non-system disk or disk error-type message with a 1. Diskette Drive known-good diagnostic diskette. 2. System Board 3. Diskette Drive Cable Other display symptoms not listed above (including blank 1. Display or illegible display) 2. System Board Power-on indicator or hard disk drive in-use light not on, 1.
  • Page 43 2. Remove or disconnect the following components (if installed) one at a time. a. External devices (modem, printer, or mouse) b. Any adapters c. Memory modules d. Extended video memory e. External Cache f. External Cache RAM g. Hard disk drive h.
  • Page 44 M75s Gen 2 Hardware Maintenance Manual...

  • Page 45: Chapter 5. Troubleshooting, Diagnostics, And Recovery

    4. Run the diagnostic program. See “Diagnostics” on page 47. 5. Recover your operating system. See “Recovery” on page 48. 6. If the problem persists, contact Lenovo. Troubleshooting Use the troubleshooting information to find solutions to problems that have definite symptoms.

  • Page 46: Startup Problems

    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.

  • Page 47: Audio Problems

    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.
  • Page 48 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. Go to Control Panel and view by large icons or small icons. 2.
  • Page 49 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.

  • Page 50: Performance Problems

    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.

  • Page 51: Storage Drive Problems

    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 –...

  • Page 52: Serial Connector Problems

    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.

  • Page 53: Software Problems

    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 For information about Lenovo diagnostic tools, go to: https://pcsupport.lenovo.com/lenovodiagnosticsolutions UEFI diagnostic program A UEFI diagnostic program is preinstalled on the computer. It enables you to test memory modules and internal storage devices, view system information, and check and recover bad sectors on internal storage devices.

  • Page 54: Recovery

    Table 1. Options on the main screen of the UEFI diagnostic program DIAGNOSTICS TOOLS • CPU [U] • SYSTEM INFORMATION [F1] • DISPLAY [D] • BAD BLOCK RECOVERY [F3] • KEYBOARD [K] • SMART INFORMATION [F5] • MEMORY [E] • MOTHERBOARD [H] •...

  • Page 55: Windows Automatic Recovery

    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.
  • Page 56 • From Windows Update: Note: The device drivers provided by Windows Update might not be tested by Lenovo. It is recommended that you get device drivers from Lenovo. 1. Open the Start menu.

  • Page 57: Chapter 6. Hardware Removal And Installation

    Common tool Isolated tweezers Common tool Hexagonal socket Common tool Silicone grease Consumable tool Polyamide tape Consumable tool Mylar tape Consumable tool Eraser Consumable tool Electrical tape Consumable tool Double-sided tape Consumable tool Conductive tape Consumable tool © Copyright Lenovo 2020...

  • Page 58: Major Frus And Crus

    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: •...
  • Page 59 Number Description Self-service CRU Optional-service CRU Heat sink and fan assembly Memory module Microprocessor System board Coin-cell battery Wi-Fi card* Wi-Fi card shield* Chapter 6 Hardware removal and installation...
  • Page 60 Number Description Self-service CRU Optional-service CRU M.2 solid-state drive* M.2 solid-state drive bracket* Heat sink and thermal pad (type 2)* Heat sink and thermal pad (type 1)* Cover presence switch Card reader* Card reader bracket* Illuminated red dot cable and clip Power button Front I/O bracket Thermal sensor...

  • Page 61: System Board

    For detailed FRU and CRU information, such as the FRU part numbers and supported computer models, go http://www.lenovo.com/serviceparts-lookup System board 4-pin power connector Microprocessor socket Microprocessor fan connector Memory slot (DIMM1) Memory slot (DIMM2) Memory slot (DIMM3) Memory slot (DIMM4)

  • Page 62: Removing And Installing Hardware

    System fan connector E-lock connector Cover presence switch 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”...

  • Page 63: Front Bezel

    Before you open the computer cover, turn off the computer and wait several minutes until the computer is cool. For access, do the following: 1. Remove any media from the drives and turn off all connected devices and the computer. 2.

  • Page 64: Optical Drive

    Replacement procedure Optical drive Prerequisite Before you start, read Chapter 1 “Important safety information” on page 1 and print the following instructions. For access, do the following: 1. Remove the computer cover. See “Computer cover” on page 56. 2. Disconnect the signal and power cable from the optical drive. M75s Gen 2 Hardware Maintenance Manual...
  • Page 65 Replacement procedure Chapter 6 Hardware removal and installation...

  • Page 66: Drive Bay Assembly

    Drive bay assembly Prerequisite Before you start, read Chapter 1 “Important safety information” on page 1 and print the following instructions. For access, remove the following parts in order: • “Computer cover” on page 56 • “Front bezel” on page 57 Replacement procedure M75s Gen 2 Hardware Maintenance Manual...

  • Page 67: Hard Disk Drive

    Hard disk drive Prerequisite Before you start, read Chapter 1 “Important safety information” on page 1 and print the following instructions. Attention: The internal storage drive is sensitive. Inappropriate handling might cause damage and permanent loss of data. When handling the internal storage drive, observe the following guidelines: •...
  • Page 68 Removal steps for 2.5-inch primary hard disk drive Remove the storage converter with the 2.5-inch primary storage drive. See “3.5-inch primary hard disk drive” on page 61. M75s Gen 2 Hardware Maintenance Manual...

  • Page 69: For Access, Do The Following

    Removal steps for 2.5-inch secondary hard disk drive For access, do the following: 1. Remove the following parts in order, if any: • “Computer cover” on page 56 • “Front bezel” on page 57 • “Optical drive” on page 58 •...

  • Page 70: M.2 Solid-State Drive And Heat Sink

    M.2 solid-state drive and heat sink Prerequisite Before you start, read Chapter 1 “Important safety information” on page 1 and print the following instructions. The heat sink might be very hot. Before you open the computer cover, turn off the computer and wait several minutes until the computer is cool.
  • Page 71 • For computers with the heat sink for the M.2 solid-state drive, do one of the following depending on the computer model: – Type 1 Note: Remove the film that covers the thermal pad (if any) when installing the M.2 solid-state drive and the heat sink.
  • Page 72 Note: Remove the film that covers the thermal pad (if any) when installing the M.2 solid-state drive and the heat sink. – Type 3 Note: Remove the film that covers the thermal pad (if any) when installing the M.2 solid-state drive and the heat sink.

  • Page 73: M.2 Solid-State Drive Bracket

    M.2 solid-state drive bracket Prerequisite Before you start, read Chapter 1 “Important safety information” on page 1 and print the following instructions. For access, remove the following parts in order, if any: • “Computer cover” on page 56 • “Front bezel” on page 57 •...

  • Page 74: Front Wi-Fi Antenna

    Removal steps Front Wi-Fi antenna Prerequisite Before you start, read Chapter 1 “Important safety information” on page 1 and print the following instructions. For access, do the following: 1. Remove the following parts in order, if any: • “Computer cover” on page 56 •...

  • Page 75: Memory Module

    Replacement procedure Memory module Prerequisite Before you start, read Chapter 1 “Important safety information” on page 1 and print the following instructions. Ensure that you follow the installation order for memory modules shown in the following illustration. For access, remove the following parts in order, if any: Chapter 6 Hardware removal and installation...

  • Page 76: Pci-Express Card

    • “Computer cover” on page 56 • “Front bezel” on page 57 • “Drive bay assembly” on page 60 Replacement procedure Note: During the installation, ensure that you align the memory module to the slot and press down on both ends until the latches are fully engaged with a click.

  • Page 77: Coin-Cell Battery

    Note: Remove any PCI-Express connector cables that impede the installation of PCI-Express cards. Coin-cell battery Prerequisite Before you start, read Chapter 1 “Important safety information” on page 1 and print the following instructions. Your computer has a special type of memory that maintains the date, time, and settings for built-in features, such as parallel connector assignments (configurations).

  • Page 78: E-Lock

    Keep fingers and other parts of your body away from hazardous, moving parts. If you suffer an injury, seek medical care immediately. Never remove the cover on a power supply or any part that has the following label attached. Hazardous voltage, current, and energy levels are present inside any component that has this label attached. There are no serviceable parts inside these components.

  • Page 79: Internal Speaker

    Removal steps Internal speaker Prerequisite Before you start, read Chapter 1 “Important safety information” on page 1 and print the following instructions. For access, do the following: 1. Remove the following parts in order, if any: • “Computer cover” on page 56 •...

  • Page 80: Thermal Sensor

    • “Drive bay assembly” on page 60 2. Disconnect the illuminated red dot cable from the system board. Removal steps Thermal sensor Prerequisite Before you start, read Chapter 1 “Important safety information” on page 1 and print the following instructions. For access, do the following: 1.
  • Page 81 For access, do the following: 1. Remove the following parts in order, if any: • “Computer cover” on page 56 • “Front bezel” on page 57 • “Drive bay assembly” on page 60 2. Disconnect the power button cable and the card reader cable from the system board. Replacement procedure Chapter 6 Hardware removal and installation...

  • Page 82: Card Reader And Card Reader Bracket

    Card reader and card reader bracket Prerequisite Before you start, read Chapter 1 “Important safety information” on page 1 and print the following instructions. For access, do the following: 1. Remove the following parts in order, if any: • “Computer cover” on page 56 •...
  • Page 83 Heat sink and fan assembly Prerequisite Before you start, read Chapter 1 “Important safety information” on page 1 and print the following instructions. For access, do the following: 1. Remove the following parts in order, if any: • “Computer cover” on page 56 •...

  • Page 84: Heat Sink And Fan Assembly

    Microprocessor Prerequisite Before you start, read Chapter 1 “Important safety information” on page 1 and print the following instructions. CAUTION: The heat sink and microprocessor might be very hot. Before you open the computer cover, turn off the computer and wait several minutes until the computer is cool. For access, remove the following parts in order, if any: •...
  • Page 85 Removal steps Cover presence switch Prerequisite Before you start, read Chapter 1 “Important safety information” on page 1 and print the following instructions. For access, do the following: 1. Remove the computer cover. See “Computer cover” on page 56. 2. Disconnect the cover presence switch cable from the system board. Removal steps System board Prerequisite...
  • Page 86 • “Drive bay assembly” on page 60 • “M.2 solid-state drive and heat sink” on page 64 • “M.2 solid-state drive bracket” on page 67 • “Wi-Fi card” on page 67 • “Memory module” on page 69 • “PCI-Express card” on page 70 •...
  • Page 87 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.
  • Page 88 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.

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