Lenovo 12TD000HPB Hardware Maintenance Manual
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Lenovo 12TD000HPB Hardware Maintenance Manual

Lenovo 12TD000HPB Hardware Maintenance Manual

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ThinkCentre M70q Gen 5
ThinkCentre M90q Gen 5
Hardware Maintenance Manual

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  • Page 1 ThinkCentre M70q Gen 5 ThinkCentre M90q Gen 5 Hardware Maintenance Manual...
  • Page 2 Second Edition (February 2025) © Copyright Lenovo 2024, 2025. 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

    Clear CMOS ....trademarks ....89 Chapter 5. Diagnostics ..41 © Copyright Lenovo 2024, 2025...
  • Page 4 ThinkCentre M70q Gen 5 ThinkCentre M90q Gen 5 Hardware Maintenance Manual...

  • Page 5: About This Manual

    ThinkCentre products, please follow all instructions carefully. 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 2024, 2025...
  • Page 6 ThinkCentre M70q Gen 5 ThinkCentre M90q Gen 5 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 2024, 2025...

  • 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

    – Power supply units – Pumps – Blowers and fans – Motor generators and similar units. (This practice ensures correct grounding of the units.) • If an electrical accident occurs: – Use caution; do not become a victim yourself. – Switch off power. –...

  • Page 10: Handling Electrostatic Discharge-Sensitive Devices

    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 • 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. • Connect all power cords to a properly wired and grounded electrical outlet. •...
  • Page 12 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) ThinkCentre M70q Gen 5 ThinkCentre M90q Gen 5 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 PRECAUCIÓN: 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 ThinkCentre M70q Gen 5 ThinkCentre M90q Gen 5 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 • Geräte niemals einschalten, wenn Hinweise auf Feuer, Wasser oder Gebäudeschäden vorliegen. • 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. •...
  • Page 24 Einige Lasergeräte enthalten eine Laserdiode der Klasse 3A oder 3B. Beachten Sie Folgendes: 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. ThinkCentre M70q Gen 5 ThinkCentre M90q Gen 5 Hardware Maintenance Manual...
  • Page 27 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. • Collegare tutti i fili elettrici a una presa di alimentazione correttamente cablata e dotata di messa a terra.
  • Page 28 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. •...
  • 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 • Cualquier equipo que se conecte a este producto también debe conectarse a tomas de corriente debidamente cableadas. • Siempre que sea posible, utilice una sola mano para conectar o desconectar los cables de señal. • No encienda nunca un equipo cuando hay señales de fuego, agua o daños estructurales. •...
  • Page 32 PELIGRO 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 2024, 2025...

  • 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

    M90q Gen 5 Description Description Item Item Power button with power indicator ThinkCentre LED Storage drive activity indicator USB-C connector (USB 20Gbps) USB-A connector (USB 10Gbps, Always On USB-A connector (USB 10Gbps) USB) Headset connector © Copyright Lenovo 2024, 2025...

  • Page 36: Rear

    Statement on USB transfer rate Depending on many factors such as the processing capability of the host and peripheral devices, file attributes, and other factors related to system configuration and operating environments, the actual transfer rate using the various USB connectors on this device will vary and will be slower than the data rate listed in the connector name or below for each corresponding device.

  • Page 37: M90Q Gen 5

    Description Description Item Item ™ USB-A connector (USB 5Gbps) HDMI out connector ™ DisplayPort out connector Power adapter connector * for selected models M90q Gen 5 Description Description Item Item Optional connectors* Security-lock slot Wi-Fi antenna slot* Ethernet connector USB-A connector (USB 5Gbps) (with smart USB-A connector (USB 10Gbps) power-on feature) USB-A connector (USB 5Gbps)
  • Page 38 ThinkCentre M70q Gen 5 ThinkCentre M90q Gen 5 Hardware Maintenance Manual...

  • Page 39: Chapter 4. Service Checkout And Symptom-To-Fru Index

    • 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 2024, 2025...

  • Page 40: 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 41: 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 42: 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 43: Miscellaneous Error Conditions

    POST error message Description/Action Error code 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 44 Message/Symptom FRU/Action Blank screen except for flashing cursor. 1. System Board 2. Primary Hard Disk Drive 3. Hard Disk Drive Cable 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.

  • Page 45: Undetermined Problems

    Message/Symptom FRU/Action Serial or parallel connector device failure (system board 1. External Device Self-Test OK? connector) 2. External Device 3. Cable 4. System Board Serial or parallel connector device failure (adapter 1. External Device Self-Test OK? connector) 2. External Device 3.

  • Page 46: Clear Cmos

    Note: Depending on the computer model, the recovery process will take two to three minutes. 8. Disconnect all power cords from electrical outlets. 9. Move the jumper back to the standard position. 10. Reinstall all the parts that have been removed. Then, reconnect the power cords for the computer and the monitor to electrical outlets.

  • Page 47: Chapter 5. Diagnostics

    4. Run the diagnostic program. 5. Recover your operating system. See “Self-help resources” on page 42. 6. If the problem persists, contact Lenovo. 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 48: Lenovo Diagnostic Tools

    Note: The options on the main screen might vary, depending on the hardware configuration and the UEFI diagnostic program version preinstalled on the computer. Lenovo diagnostic tools For information about Lenovo diagnostic tools, go to: https://pcsupport.lenovo.com/lenovodiagnosticsolutions Self-help resources Use the following self-help resources to learn more about the computer and troubleshoot problems.
  • Page 49 • Setup Guide want. • This User Guide • Regulatory Notice Lenovo Support Web site with the latest support information of the following: • Drivers and software • Diagnostic solutions https://pcsupport.lenovo.com • Product and service warranty •...
  • Page 50 ThinkCentre M70q Gen 5 ThinkCentre M90q Gen 5 Hardware Maintenance Manual...

  • Page 51: Chapter 6. Hardware Removal And Installation

    Screw driver: Phillips Head 01 1, Shank length greater than 6 ThinkSation/DT Common tool inches Screw driver: Phillips Head 02 2, Shank length greater than 6 ThinkSation/SC/DT Common tool inches Screw driver: Torx Head T5 IdeaPad Common tool © Copyright Lenovo 2024, 2025...
  • Page 52 Tool name Specific Product scope Tool type Screw driver: Torx Head T15 T15, for Chassis outside ThinkSation Common tool Screw driver: Torx Head T20 T20, Shank length greater than ThinkSation Common tool 6 inches, for heatsink and CPU Screw driver: Torx Head T30 T30, Shank length greater than ThinkSation Common tool...

  • Page 53: Major Frus And Crus

    • FRUs: Refer to parts that are more complicated to replace and it is recommended that these should be replaced by trained service technicians. If customers elect to replace the FRU by themselves, we recommend that you ensure the correct instructions provided by Lenovo are carefully followed. Chapter 6...

  • Page 54: Thinkcentre Led

    M70q Gen 5 Number Description Self-service CRU Optional-service CRU Computer cover System fan and heat sink ThinkCentre LED cable Internal speaker (type 1) ThinkCentre M70q Gen 5 ThinkCentre M90q Gen 5 Hardware Maintenance Manual...
  • Page 55 Number Description Self-service CRU Optional-service CRU Internal speaker (type 2) Antenna bracket Wi-Fi card* Wi-Fi card cover* Memory module Computer chassis M.2 solid-state drive clip* M.2 solid-state drive* Chassis rubber Front Wi-Fi antenna* Rear Wi-Fi antenna cable* External Wi-Fi antenna* Optional card module* System board Microprocessor...
  • Page 56 M90q Gen 5 Number Description Self-service CRU Optional-service CRU Computer cover Dust filter* System fan and heat sink (type 1) System fan and heat sink (type 2) PCH heat sink Microprocessor ThinkCentre M70q Gen 5 ThinkCentre M90q Gen 5 Hardware Maintenance Manual...
  • Page 57 Power adapter cage (type 2)* ac power adapter Power cord Vertical stand* Keyboard* Mouse* ® VESA mount bracket* For detailed FRU and CRU information, such as the FRU part numbers and supported computer models, go http://www.lenovo.com/serviceparts-lookup Chapter 6 Hardware removal and installation...

  • Page 58: System Board Connector

    System board connector M70q Gen 5 ThinkCentre M70q Gen 5 ThinkCentre M90q Gen 5 Hardware Maintenance Manual...
  • Page 59 Description Description Item Item Clear CMOS Optional card connectors Microprocessor socket Memory slot (DIMM2) Memory slot (DIMM1) ThinkCentre LED connector Internal speaker connector System fan connector M.2 Wi-Fi card slot Intrusion switch connector M.2 solid-state drive slot (SSD2) M.2 solid-state drive slot (SSD1) Coin-cell battery Chapter 6 Hardware removal and installation...
  • Page 60 M90q Gen 5 Description Description Item Item Clear CMOS Optional card connectors Microprocessor socket ThinkCentre M70q Gen 5 ThinkCentre M90q Gen 5 Hardware Maintenance Manual...

  • Page 61: Removing And Installing Hardware

    Description Description Item Item Coin-cell battery ThinkCentre LED connector Internal speaker connector System fan connector Intrusion switch connector M.2 Wi-Fi card slot PCI-Express ×8 slot M.2 solid-state drive slot (SSD1) M.2 solid-state drive slot (SSD2) Memory slot (DIMM2) Memory slot (DIMM1) Removing and installing hardware This section provides instructions on how to remove and install hardware for your computer.

  • Page 62: Power Adapter Cage

    Removal steps Power adapter cage 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. Replacement procedure •...
  • Page 63 Chapter 6 Hardware removal and installation...
  • Page 64 • Type-2 ThinkCentre M70q Gen 5 ThinkCentre M90q Gen 5 Hardware Maintenance Manual...
  • Page 65 Chapter 6 Hardware removal and installation...
  • Page 66 Screw (quantity) Torque M4 x L5 mm, Black Zn coated (2) 3.0 ± 0.5 lb/in ThinkCentre M70q Gen 5 ThinkCentre M90q Gen 5 Hardware Maintenance Manual...
  • Page 67 Chapter 6 Hardware removal and installation...

  • Page 68: Vesa Mount Bracket

    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 Screw (quantity) Torque...

  • Page 69: Vertical Stand

    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. Removal step External Wi-Fi antenna Prerequisite...

  • Page 70: Dust Filter

    Removal steps Dust filter 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. ThinkCentre M70q Gen 5 ThinkCentre M90q Gen 5 Hardware Maintenance Manual...

  • Page 71: Computer Cover

    Removal step Computer cover Prerequisite Before you start, read Generic Safety and Compliance Notices, and print the following instructions. 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.

  • Page 72: Internal Speaker

    Removal steps Screw (quantity) Torque M4 x L5 mm, Black Zn coated (1) 3.0 ± 0.5 lb/in 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 65. 2.

  • Page 73: System Fan And Heat Sink

    System fan and 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.
  • Page 74 Replacement procedure • Type-1 Screw (quantity) Torque M3 x L3 mm, Ni coated (4) 3.0 ± 0.5 lb/in ThinkCentre M70q Gen 5 ThinkCentre M90q Gen 5 Hardware Maintenance Manual...
  • Page 75 • Type-2 (only for M90q Gen 5) Chapter 6 Hardware removal and installation...
  • Page 76 Screw (quantity) Torque M3 x L3 mm, Ni coated (4) 3.0 ± 0.5 lb/in ThinkCentre M70q Gen 5 ThinkCentre M90q Gen 5 Hardware Maintenance Manual...

  • Page 77: Pci-Express Card And Pci-Express Converter (Only For M90Q Gen 5)

    PCI-Express card and PCI-Express converter (only for M90q Gen 5) 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 65. Replacement procedure Screw (quantity) Torque M3 x L3.2 mm, Ni coated (2) 3.0 ±...
  • Page 78 Screw (quantity) Torque M3 x L3.2 mm, Ni coated (1) 3.0 ± 0.5 lb/in ThinkCentre M70q Gen 5 ThinkCentre M90q Gen 5 Hardware Maintenance Manual...
  • Page 79 Chapter 6 Hardware removal and installation...

  • Page 80: Thunderbolt 4 Card Module (Only For M90Q Gen 5)

    Thunderbolt 4 card module (only for M90q Gen 5) Prerequisite Before you start, read Generic Safety and Compliance Notices, and print the following instructions. Removal procedure 1. For access, remove the top cover, see “Computer Cover” on page 65. 2. Remove the Thunderbolt 4 card module and the PCI-Express converter. ThinkCentre M70q Gen 5 ThinkCentre M90q Gen 5 Hardware Maintenance Manual...
  • Page 81 Screw (quantity) Torque M3 x L3.2 mm, Ni coated (2) 3.0 ± 0.5 lb/in M3 x L6.8 mm, Black Zn coated (1) 3.0 ± 0.5 lb/in Screw (quantity) Torque M3 x L9.8 mm, Black Zn coated (1) 3.0 ± 0.5 lb/in Chapter 6 Hardware removal and installation...

  • Page 82: I/O Bracket (Only For M90Q Gen 5)

    Cable connection When installing the Thunderbolt 4 card module, ensure to connect the DisplayPort to Mini DisplayPort cable. I/O bracket (only for M90q Gen 5) Prerequisite Before you start, read Generic Safety and Compliance Notices, and print the following instructions. For access, remove the computer cover.

  • Page 83: Optional Card Module

    Optional card module 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 65. • “PCI-Express card and PCI-Express converter (only for M90q Gen 5)” on page 71. Removal steps Note: Depending on the model, the optional card module might look differently from illustration below.

  • Page 84: M.2 Solid-State Drive

    Replacement procedure 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: Memory Module

    Removal steps Note: Remove the film that covers the thermal pad (if any) when installing the M.2 solid-state drive. 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. •...

  • Page 86: Wi-Fi Card And Wi-Fi Card Cover

    For access, do the following: 1. Remove these parts, if any: • “Computer cover” on page 65. • “Bottom cover (only for M90q Gen 5)” on page 77. 2. For M70q Gen 5, remove the system fan. Replacement procedure Wi-Fi card and Wi-Fi card cover Prerequisite Before you start, read Generic Safety and Compliance Notices, and print the following instructions.

  • Page 87: Rear Wi-Fi Antenna Cable

    Removal steps Screw (quantity) Torque M2 x L3 mm, Ni coated (1) 1.5 ± 0.2 lb/in 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. Rear Wi-Fi antenna cable Prerequisite Before you start, read Generic Safety and Compliance Notices, and print the following instructions.

  • Page 88: Antenna Bracket

    For access, remove the following parts in order, if any: • “Computer cover” on page 65. • “PCI-Express card and PCI-Express converter (only for M90q Gen 5)” on page 71. • “Wi-Fi card and Wi-Fi card cover” on page 80. Replacement procedure Antenna bracket Prerequisite...

  • Page 89: Pch Heat Sink (Only For M90Q Gen 5)

    Removal steps Screw (quantity) Torque M3 x L4 mm, Black Zn coated (1) 3.0 ± 0.5 lb/in M3 x L5 mm, Ni coated (1) 3.0 ± 0.5 lb/in PCH heat sink (only for M90q Gen 5) Prerequisite Before you start, read Generic Safety and Compliance Notices, and print the following instructions. The PCH heat sink might be very hot.

  • Page 90: Microprocessor

    Screw (quantity) Torque M2 x L3.2 mm, Ni coated (2) 3.0 ± 0.5 lb/in M3 x L4.4 mm, Ni coated (1) 3.0 ± 0.5 lb/in Microprocessor Prerequisite Before you start, read Generic Safety and Compliance Notices, and print the following instructions. The heat sink might be very hot.

  • Page 91: System Board

    Note: Before you attach the microprocessor to the computer, clean all thermal grease that has been used and then apply new thermal grease. Apply new thermal grease at an amount of 0.65 grams, on the parts marked as shown in the following illustrations. Either too much or too less application of grease can cause a thermal problem due to imperfect contact with a component.
  • Page 92 • “Memory module” on page 79. • “Wi-Fi card and Wi-Fi card cover” on page 80. • “Rear Wi-Fi antenna cable” on page 81. • “Front Wi-Fi antenna” on page 81. • “Antenna bracket” on page 82. • “PCH heat sink (only for M90q Gen 5)” on page 83. •...
  • Page 93 Screw (quantity) Torque M3 x L5 mm, Zn coated (4) 3.0 ± 0.5 lb/in Note: The failing system board must be returned with a microprocessor socket cover to protect the pins during shipping and handling. When installing: Clean all thermal grease that have been used and then apply new thermal grease if needed. Chapter 6 Hardware removal and installation...
  • Page 94 ThinkCentre M70q Gen 5 ThinkCentre M90q Gen 5 Hardware Maintenance Manual...

  • Page 95: 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 96 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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