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Lenovo ThinkCentre M70q Gen 2 Hardware Maintenance Manual
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Lenovo ThinkCentre M70q Gen 2 Hardware Maintenance Manual

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Summary of Contents for Lenovo ThinkCentre M70q Gen 2

  • Page 1 M70q Gen 2 and M90q Gen 2 Hardware Maintenance Manual...
  • Page 2 First Edition (April 2021) © Copyright Lenovo 2021. 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 Front Wi-Fi antenna ... Microprocessor ... . . Antenna bracket ... . . System board .

  • 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 2021...
  • Page 6 M70q Gen 2 and M90q 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 2021...

  • 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) M70q Gen 2 and M90q 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 M70q Gen 2 and M90q 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: M70q Gen 2 and M90q 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 2021...

  • 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. Always On USB 3.2 connector Gen 2 6. Headset connector M90q Gen 2 ® 1. ThinkCentre 2. Power button 3. Storage drive activity indicator 4. USB-C (3.2 Gen 2) connector 5. Always On USB 3.2 connector Gen 2 6. Headset connector © Copyright Lenovo 2021...

  • Page 36: Rear

    Rear 1. Optional connectors* 2. Security-lock slot ® 3. Wi-Fi antenna slot* 4. Ethernet connector 6. USB 3.2 connector Gen 1 (with smart power-on 5. USB 3.2 connectors Gen 2 feature) 7. HDMI™ out connector 8. USB 3.2 connector Gen 1 ®...

  • 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 2021...

  • 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 • Some basic system-board operations • Memory operation • Video operation • Whether the boot drive is working If the POST detects a problem, an error message appears on the screen. A single problem might cause several error messages to appear. When you correct the cause of the first error message, the other error messages probably will not appear on the screen the next time.

  • Page 41: Miscellaneous Error Conditions

    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.
  • Page 42 Message/Symptom FRU/Action Incorrect memory size during POST 1. Run the Memory tests. 2. Memory Module 3. System Board "Insert a Diskette" icon appears with a known-good 1. System Board diagnostics diskette in the first 3.5-inch diskette drive. 2. Diskette Drive Cable 3.

  • Page 43: Undetermined Problems

    Message/Symptom FRU/Action Serial or parallel connector device failure (adapter 1. External Device Self-Test OK? connector) 2. External Device 3. Cable 4. Alternate Adapter 5. System Board Some or all keys on the keyboard do not work 1. Keyboard 2. Keyboard Cable 3.
  • Page 44 M70q Gen 2 and M90q 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] • MEMORY [E] • SMART INFORMATION [F5] • MOTHERBOARD [H] • PCI EXPRESS [P] •...

  • 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 2021...

  • 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 M70q Gen 2 Number Description Self-service CRU Optional-service CRU Computer cover Heat sink System fan Coin-cell battery Chapter 6 Hardware removal and installation...
  • Page 60 Number Description Self-service CRU Optional-service CRU Internal speaker Antenna bracket Wi-Fi card* Wi-Fi card shield* Memory module Computer chassis M.2 solid-state drive* Bottom cover Front Wi-Fi antenna* Rear Wi-Fi antenna cable* External Wi-Fi antenna* I/O board* Hard disk drive cable* Hard disk drive* Hard disk drive bracket* System board...
  • Page 61 M90q Gen 2 Number Description Self-service CRU Optional-service CRU Computer cover Dust shield* System fan Heat sink Microprocessor Coin-cell battery Chapter 6 Hardware removal and installation...
  • Page 62 Mouse* ® VESA mount bracket* External optical drive box* External optical drive* For detailed FRU and CRU information, such as the FRU part numbers and supported computer models, go http://www.lenovo.com/serviceparts-lookup M70q Gen 2 and M90q Gen 2 Hardware Maintenance Manual...

  • Page 63: System Board

    System board M70q Gen 2 Chapter 6 Hardware removal and installation...
  • Page 64 I/O board connector Microprocessor socket Coin-cell battery System fan connector Internal speaker connector SATA connector for hard disk drive M.2 Wi-Fi card slot Cover presence switch connector (intrusion switch Serial connector (COM1) connector) Clear CMOS (Complementary Metal Oxide M.2 solid-state drive slot Semiconductor)/Recovery jumper Memory slot (DIMM1) Memory slot (DIMM2)
  • Page 65 M90q Gen 2 I/O board connector Microprocessor socket Coin-cell battery Internal speaker connector System fan connector Chapter 6 Hardware removal and installation...

  • Page 66: Removing And Installing Hardware

    SATA connector for hard disk drive M.2 Wi-Fi card slot Cover presence switch connector (intrusion switch PCIe x8 card slot connector) Serial connector (COM1) Clear CMOS (Complementary Metal Oxide Semiconductor)/Recovery jumper M.2 solid-state drive slot (SSD1) M.2 solid-state drive slot (SSD2) Memory slot (DIMM1) Memory slot (DIMM2) Removing and installing hardware...

  • Page 67: Power Adapter Bracket

    Removal steps Power adapter bracket Prerequisite Before you start, read Generic Safety and Compliance Notices, and print the following instructions. For access, do the following: 1. Turn off the computer and remove all connected devices and cables. 2. Disconnect the computer from ac power and all connected cables. Chapter 6 Hardware removal and installation...

  • Page 68: Vertical Stand

    Replacement procedure Vertical stand Prerequisite Before you start, read Generic Safety and Compliance Notices, and print the following instructions. For access, do the following: 1. Turn off the computer and remove all connected devices and cables. 2. Disconnect the computer from ac power and all connected cables. M70q Gen 2 and M90q Gen 2 Hardware Maintenance Manual...

  • Page 69: Vesa Mount Bracket

    Removal step VESA mount bracket Prerequisite Before you start, read Generic Safety and Compliance Notices, and print the following instructions. For access, do the following: 1. Turn off the computer and remove all connected devices and cables. 2. Disconnect the computer from ac power and all connected cables. Removal steps Chapter 6 Hardware removal and installation...

  • Page 70: External Optical Drive Box And External Optical Drive

    External optical drive box and external optical drive Prerequisite Before you start, read Generic Safety and Compliance Notices, and print the following instructions. For access, do the following: 1. Turn off the computer and remove all connected devices and cables. 2.

  • Page 71: Dust Shield

    Dust shield Prerequisite Before you start, read Generic Safety and Compliance Notices, and print the following instructions. For access, do the following: 1. Turn off the computer and remove all connected devices and cables. 2. Disconnect the computer from ac power and all connected cables. Chapter 6 Hardware removal and installation...
  • Page 72 Replacement procedure M70q Gen 2 and M90q Gen 2 Hardware Maintenance Manual...

  • Page 73: External Wi-Fi Antenna

    External Wi-Fi antenna Prerequisite Before you start, read Generic Safety and Compliance Notices, and print the following instructions. For access, do the following: 1. Turn off the computer and remove all connected devices and cables. 2. Disconnect the computer from ac power and all connected cables. Removal steps Computer cover Prerequisite...

  • Page 74: Hard Disk Drive And Hard Disk Drive Bracket

    Removal steps Hard disk drive and hard disk drive bracket Prerequisite Before you start, read Generic Safety and Compliance Notices, 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 75 Replacement procedure Chapter 6 Hardware removal and installation...

  • Page 76: Pcie Card And Pcie Converter (For M90Q Gen 2 Only)

    PCIe card and PCIe converter (for M90q Gen 2 only) Prerequisite Before you start, read Generic Safety and Compliance Notices, and print the following instructions. For access, remove the computer cover. See “Computer cover” on page 67. M70q Gen 2 and M90q Gen 2 Hardware Maintenance Manual...
  • Page 77 Replacement procedure Chapter 6 Hardware removal and installation...
  • Page 78 M70q Gen 2 and M90q Gen 2 Hardware Maintenance Manual...

  • Page 79: Internal Speaker

    Internal speaker Prerequisite Before you start, read Generic Safety and Compliance Notices, and print the following instructions. For access, do the following: 1. Remove the computer cover. See “Computer cover” on page 67. 2. Disconnect the internal speaker cable from the internal speaker connector on the system board. Removal steps System fan Prerequisite...
  • Page 80 For access, do the following: 1. Remove the computer cover. See “Computer cover” on page 67. 2. Remove the internal speaker. See “Internal speaker” on page 73. 3. Disconnect the system fan cable from the system fan connector on the system board. Replacement procedure •...

  • Page 81: Coin-Cell Battery

    Coin-cell battery Prerequisite Before you start, read Generic Safety and Compliance Notices, 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). A coin-cell battery keeps this information active when you turn off the computer.

  • Page 82: Wi-Fi Card And Wi-Fi Card Shield

    Removal steps Note: After installing a new coin-cell battery, reset the system date and time in the UEFI BIOS menu. Wi-Fi card and Wi-Fi card shield Prerequisite Before you start, read Generic Safety and Compliance Notices, and print the following instructions. For access, remove the following parts in order, if any: •...

  • Page 83: Bottom Cover

    Note: While installing, ensure that you connect the gray cable to the connector labeled 1 (auxiliary) and the black cable to connector labeled 2 (main) on the card. Bottom cover Prerequisite Before you start, read Generic Safety and Compliance Notices, and print the following instructions. For access, do the following: •...

  • Page 84: M.2 Solid-State Drive

    M.2 solid-state drive Prerequisite Before you start, read Generic Safety and Compliance Notices, and print the following instructions. Attention: The M.2 solid-state drive is sensitive. Inappropriate handling might cause damage and permanent loss of data. When handling the M.2 solid-state drive, observe the following guidelines: •...
  • Page 85 • M90q Gen 2 Chapter 6 Hardware removal and installation...
  • Page 86 M70q Gen 2 and M90q Gen 2 Hardware Maintenance Manual...

  • Page 87: Memory Module

    Memory module Prerequisite Before you start, read Generic Safety and Compliance Notices, 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: •...
  • Page 88 Replacement procedure M70q Gen 2 and M90q Gen 2 Hardware Maintenance Manual...

  • Page 89: Rear Wi-Fi Antenna Cable

    Rear Wi-Fi antenna cable Prerequisite Before you start, read Generic Safety and Compliance Notices, and print the following instructions. For access, remove the following parts in order, if any: • “Computer cover” on page 67. • “Hard disk drive and hard disk drive bracket” on page 68. •...

  • Page 90: Antenna Bracket

    Antenna bracket Prerequisite Before you start, read Generic Safety and Compliance Notices, and print the following instructions. For access, remove the following parts in order, if any: • “Computer cover” on page 67. • “Hard disk drive and hard disk drive bracket” on page 68. •...

  • Page 91: I/O Board

    Removal steps I/O board Prerequisite Before you start, read Generic Safety and Compliance Notices, and print the following instructions. For access, remove the following parts in order, if any: • “Computer cover” on page 67. • “Hard disk drive and hard disk drive bracket” on page 68. •...

  • Page 92: Heat Sink

    Heat sink Prerequisite Before you start, read Generic Safety and Compliance Notices, 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. For access, remove the following parts in order, if any: •...

  • Page 93: Microprocessor

    Microprocessor Prerequisite Before you start, read Generic Safety and Compliance Notices, 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. For access, remove the following parts in order, if any: •...

  • Page 94: System Board

    System board Prerequisite Before you start, read Generic Safety and Compliance Notices, and print the following instructions. 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. Notes: •...
  • Page 95 • “Memory module” on page 81. • “Rear Wi-Fi antenna cable” on page 83. • “Front Wi-Fi antenna” on page 83. • “Antenna bracket” on page 84. • “Heat sink” on page 86. • “Microprocessor” on page 87. Removal steps 1.
  • Page 96 The failing system board must be returned with a microprocessor socket cover to protect the pins during shipping and handling. Microprocessor socket cover installation procedure 1. After you have removed the microprocessor from the failing system board, close the microprocessor retainer.

  • Page 97: Chapter 7. Notices And Trademarks

    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 98 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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Thinkcentre m90q gen 2

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