Lenovo ThinkCentre M70a Hardware Maintenance Manual
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Lenovo ThinkCentre M70a Hardware Maintenance Manual

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  • Page 1 M70a and M90a Hardware Maintenance Manual...
  • Page 2 • Setup Guide Third Edition (January 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

    ....4 Lenovo diagnostic tools ..Grounding requirements ... . 4 Recovery .
  • Page 4 Card reader ....116 Front decoration cover ..133 System board ....119 Wi-Fi antennas .

  • 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 M70a and M90a 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) M70a and M90a 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 M70a and M90a 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: M70a and M90a 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

    • Breathing (blinking slowly): The computer is in sleep or modern standby mode. 7. Storage drive activity indicator This indicator is on when the storage drive is in use. 8. Microphone mute/unmute This indicator is on when the microphones are muted. indicator* © Copyright Lenovo 2021...
  • Page 36 Gen 1) • Connect to USB-C accessories to help expand your computer functionality. To purchase USB-C accessories, go to https://www.lenovo.com/accessories Connect USB-compatible devices, such as a USB keyboard, USB mouse, USB 12. USB 3.2 connector Gen 2 storage device, or USB printer.

  • Page 37: Rear

    Rear Lock your computer to a desk, table, or other fixtures through a Kensington-style 1. Security-lock slot cable lock. Press the button to access the covered connectors and cables. 2. Cable cover eject button Note: For easy access, do not cover the button with any external parts. 3.
  • Page 38 * for selected models M70a and M90a Hardware Maintenance Manual...

  • Page 39: 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 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: Miscellaneous Error Conditions

    • 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 43 Message/Symptom FRU/Action ® Computer will not perform a Wake On LAN (if applicable) 1. Check the power supply and signal cable connections to the network adapter. 2. Ensure that the operating system settings are set to enable Wake on LAN. 3.

  • Page 44: Undetermined Problems

    Message/Symptom FRU/Action Program loads from the hard disk with a known-good 1. Run the Setup Utility program and check the Startup diagnostics diskette in the first 3.5-inch diskette drive sequence. 2. Diskette Drive 3. Diskette Drive Cable 4. System Board 5.
  • Page 45 4. Repeat steps 1 through 3 until you find the failing device or adapter. If all devices and adapters have been removed, and the problem continues, replace the system board. See “System board” on page 119. Chapter 4 Service checkout and symptom-to-FRU index...
  • Page 46 M70a and M90a Hardware Maintenance Manual...

  • Page 47: Chapter 5. Troubleshooting, Diagnostics, And Recovery

    3. See Chapter 5 “Troubleshooting, diagnostics, and recovery” on page 41 to resolve the problem you are experiencing, run the diagnostic program, and recover your operating system. 4. If the problem persists, contact Lenovo. Troubleshooting Use the troubleshooting information to find solutions to problems that have definite symptoms.

  • Page 48: 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 49: Screen Problems

    Screen problems Problem Solution • The computer voltage matches the voltage available at the electrical outlet for your country or region. • Press a key to exit the screen saver. • Press the power button to wake the computer from sleep or The screen goes blank while the computer is hibernation mode.

  • Page 50: 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 51 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 52 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 53: 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 54: 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 55: 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 56: 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 Recovery This section introduces the recovery information of the Windows 10 operating system. Ensure that you read and follow the on-screen recovery instructions.

  • Page 57: Use Advanced Options

    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 58: Update The Device Driver

    • 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 59: Chapter 6. Hardware Removal And Installation

    Consumable tool Eraser Consumable tool Electrical tape Consumable tool Double-sided tape Consumable tool Conductive tape Consumable tool Note: The silicone grease can be applied to the surfaces of the microprocessor and heat sink to eliminate air gaps. © Copyright Lenovo 2021...

  • Page 60: Major Frus And Crus

    Major FRUs and CRUs Your computer contains the following types of CRUs and FRUs: • Self-service CRUs: Refer to parts that can be installed or replaced easily by customer themselves or by trained service technicians at an additional cost. • Optional-service CRUs: Refer to parts that can be installed or replaced by customers with a greater skill level.
  • Page 61 Number Description Self-service CRU Optional-service CRU UltraFlex IV Stand* UltraFlex IV Stand base* Full-function monitor stand* Full-function monitor base* VESA mount bracket cover VESA mount bracket Cable cover Integrated camera and microphone module* Bump cover Main frame LCD bracket LCD panel Wi-Fi antennas Front decorative cover LCD backlight cable...
  • Page 62 Optical drive* Optical drive cable* Rear cover Power cord Power adapter Keyboard* Mouse* * 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 M70a and M90a Hardware Maintenance Manual...
  • Page 63 Major FRUs and CRUs of M90a Number Description Self-service CRU Optional-service CRU UltraFlex IV Stand* UltraFlex IV Stand base* Full-function monitor stand* Full-function monitor base* VESA mount bracket cover VESA mount bracket Cable cover Integrated camera and microphone module* Bump cover Main frame Chapter 6 Hardware removal and installation...
  • Page 64 Number Description Self-service CRU Optional-service CRU Side I/O brackets LCD bracket LCD panel Speakers Wi-Fi antennas Front decorative cover LCD backlight cable Touch board cable LCD LVDS cable Storage drive* Storage drive cable* Storage drive bracket E-Privacy button board* Cover presence switch (intrusion switch)* Serial connector module* Memory module System board...

  • Page 65: System Board

    * 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 System board Figure 1. M70a system board Integrated camera and microphone module connector LCD LVDS connector Microprocessor socket...

  • Page 66: Removing And Installing Hardware

    Figure 2. M90a system board LCD backlight connector LCD LVDS connector Integrated camera and microphone module connector Microprocessor socket Serial (COM1) connector Memory slots M.2 solid-state drive slot M.2 Wi-Fi card slot Coin-cell battery Touch board connector Internal speaker connector Optical drive connector E-Privacy connector Cover presence switch connector (intrusion switch...

  • Page 67: External Options

    External options You can connect external options to your computer, such as external speakers, a printer, or a scanner. For some external options, you must install additional software in addition to making the physical connection. When installing an external option, see Chapter 3 “Product overview” on page 29 to identify the required connector.
  • Page 68 Figure 4. Removing the full-function monitor stand base Figure 5. Installing the full-function monitor stand base M70a and M90a Hardware Maintenance Manual...
  • Page 69 Figure 6. Installing the full-function monitor stand • UltraFlex IV Stand Figure 7. Removing the UltraFlex IV Stand Chapter 6 Hardware removal and installation...
  • Page 70 Figure 8. Removing the UltraFlex IV Stand base Figure 9. Installing the UltraFlex IV Stand base M70a and M90a Hardware Maintenance Manual...

  • Page 71: Rear Cover

    Figure 10. Installing the UltraFlex IV Stand 5. Place the computer in an upright position. 6. Reconnect the ac power adapter and all disconnected cables to the computer. Rear cover Prerequisite Before you start, read Chapter 1 “Important safety information” on page 1 and print the following instructions.

  • Page 72: Optical Drive

    Figure 11. Removing the rear cover Figure 12. Installing the rear cover 7. Reinstall the computer stand. See “Computer stand” on page 61. 8. Place the computer in an upright position. 9. If a locking device is available, use it to lock the computer. 10.
  • Page 73 3. Disconnect the power and signal cable from the optical drive. 4. Depending on your computer model, refer to one of the following to replace the optical drive. • M70a Figure 13. Removing the optical drive Figure 14. Removing the optical drive bracket Figure 15.
  • Page 74 Figure 16. Installing the optical drive • M90a Figure 17. Removing the optical drive Figure 18. Removing the optical drive bracket M70a and M90a Hardware Maintenance Manual...

  • Page 75: Optical Drive Holder

    Figure 19. Installing the optical drive bracket Figure 20. Installing the optical drive 5. Reconnect the power and signal cable to the optical drive. 6. Reinstall the removed parts. 7. Place the computer in an upright position. 8. If a locking device is available, use it to lock the computer. 9.
  • Page 76 Figure 21. Removing the optical drive holder Figure 22. Installing the optical drive holder • M90a M70a and M90a Hardware Maintenance Manual...

  • Page 77: System Board Shield

    Figure 23. Removing the optical drive holder Figure 24. Installing the optical drive holder 5. Place the computer in an upright position. 6. If a locking device is available, use it to lock the computer. 7. Reconnect the external cables and power cords to the corresponding connectors on the computer. System board shield Prerequisite Before you start, read Chapter 1 “Important safety information”...
  • Page 78 2. Remove the rear cover. See “Rear cover” on page 65. 3. Remove the optical drive. See “Optical drive” on page 66. 4. Remove the optical drive holder. See “Optical drive holder” on page 69. 5. Depending on your computer model, refer to one of the following to replace the system board shield. •...
  • Page 79 Figure 27. Installing the system board shield screw • M90a Figure 28. Removing the system board shield Figure 29. Installing the system board shield Chapter 6 Hardware removal and installation...

  • Page 80: Vesa Mount Bracket Cover

    6. Reinstall the removed parts. 7. Place the computer in an upright position. 8. If a locking device is available, use it to lock the computer. 9. Reconnect the external cables and power cords to the corresponding connectors on the computer. VESA mount bracket cover Prerequisite Before you start, read Chapter 1 “Important safety information”...
  • Page 81 Figure 31. Removing the VESA mount bracket cover Figure 32. Installing the VESA mount bracket cover • M90a Figure 33. Opening the cable cover Chapter 6 Hardware removal and installation...

  • Page 82: Vesa Mount Bracket

    Figure 34. Removing the VESA mount bracket cover Figure 35. Installing the VESA mount bracket cover 7. Reinstall the removed parts. 8. Place the computer in an upright position. 9. If a locking device is available, use it to lock the computer. 10.
  • Page 83 3. Remove the optical drive. See “Optical drive” on page 66. 4. Remove the optical drive holder. See “Optical drive holder” on page 69. 5. Remove the system board shield. See “System board shield” on page 71. 6. Remove the VESA mount bracket cover. See “VESA mount bracket cover” on page 74. 7.

  • Page 84: Storage Drive And Storage Drive Bracket

    Figure 38. Removing the VESA mount bracket Figure 39. Installing the VESA mount bracket 8. Reinstall the removed parts. 9. Place the computer in an upright position. 10. If a locking device is available, use it to lock the computer. 11.
  • Page 85 3. Remove the optical drive. See “Optical drive” on page 66. 4. Remove the optical drive holder. See “Optical drive holder” on page 69. 5. Remove the system board shield. See “System board shield” on page 71. 6. Depending on your computer model, refer to one of the following to replace the storage drive and the storage drive bracket.
  • Page 86 Figure 42. Disconnecting the storage drive cable Figure 43. Connecting the storage drive cable Figure 44. Installing the storage drive to the bracket M70a and M90a Hardware Maintenance Manual...
  • Page 87 Figure 45. Installing the storage drive and the bracket • M90a Figure 46. Removing the storage drive and the bracket Figure 47. Removing the storage drive from the bracket Chapter 6 Hardware removal and installation...
  • Page 88 Figure 48. Disconnecting the storage drive cable Figure 49. Connecting the storage drive cable Figure 50. Installing the storage drive to the bracket M70a and M90a Hardware Maintenance Manual...

  • Page 89: System Fan

    Figure 51. Installing the storage drive and the bracket 7. Reinstall the removed parts. 8. Place the computer in an upright position. 9. If a locking device is available, use it to lock the computer. 10. Reconnect the external cables and power cords to the corresponding connectors on the computer. System fan Prerequisite Before you start, read Chapter 1 “Important safety information”...
  • Page 90 Figure 52. Removing the system fan Figure 53. Installing the system fan • M90a M70a and M90a Hardware Maintenance Manual...

  • Page 91: Heat Sink

    Figure 54. Removing the system fan Figure 55. Installing the system fan 8. Connect the new system fan cable to the system board. 9. Reinstall the removed parts. 10. Place the computer in an upright position. 11. If a locking device is available, use it to lock the computer. 12.
  • Page 92 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. Replacement procedure 1. Remove the computer stand. See “Computer stand” on page 61. 2. Remove the rear cover. See “Rear cover” on page 65. 3.
  • Page 93 Figure 57. Installing the heat sink • M90a Figure 58. Removing the heat sink Chapter 6 Hardware removal and installation...

  • Page 94: Bump Cover

    Figure 59. Installing the heat sink Figure 60. Tightening the heat sink screws 9. Reinstall the removed parts. 10. Place the computer in an upright position. 11. If a locking device is available, use it to lock the computer. 12. Reconnect the external cables and power cords to the corresponding connectors on the computer. Bump cover Prerequisite Before you start, read Chapter 1 “Important safety information”...
  • Page 95 Replacement procedure 1. Remove the computer stand. See “Computer stand” on page 61. 2. Remove the rear cover. See “Rear cover” on page 65. 3. Remove the optical drive. See “Optical drive” on page 66. 4. Remove the optical drive holder. See “Optical drive holder” on page 69. 5.

  • Page 96: M.2 Solid-State Drive

    • M90a Figure 63. Removing the bump cover Figure 64. Installing the bump cover 9. Reinstall the removed parts. 10. Place the computer in an upright position. 11. If a locking device is available, use it to lock the computer. 12.
  • Page 97 4. Remove the optical drive holder. See “Optical drive holder” on page 69. 5. Remove the system board shield. See “System board shield” on page 71. 6. Remove the VESA mount bracket cover. See “VESA mount bracket cover” on page 74. 7.
  • Page 98 Figure 67. Removing the M.2 solid-state drive Figure 68. Installing the M.2 solid-state drive • M90a – For M.2 solid-state drive (2280) models M70a and M90a Hardware Maintenance Manual...
  • Page 99 Figure 69. Removing the M.2 solid-state drive Figure 70. Installing the M.2 solid-state drive – For M.2 solid-state drive (2242) models Chapter 6 Hardware removal and installation...

  • Page 100: Microprocessor

    Figure 71. Removing the M.2 solid-state drive Figure 72. Installing the M.2 solid-state drive 9. Reinstall the removed parts. 10. Place the computer in an upright position. 11. If a locking device is available, use it to lock the computer. 12.
  • Page 101 CAUTION: 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. Replacement procedure 1. Remove the computer stand. See “Computer stand” on page 61. 2.
  • Page 102 Figure 74. Opening the retainer Figure 75. Removing the microprocessor Figure 76. Installing the microprocessor M70a and M90a Hardware Maintenance Manual...
  • Page 103 Figure 77. Closing the retainer Figure 78. Securing the retainer with the handle • M90a Chapter 6 Hardware removal and installation...
  • Page 104 Figure 79. Releasing the handle Figure 80. Opening the retainer Figure 81. Removing the microprocessor M70a and M90a Hardware Maintenance Manual...
  • Page 105 Figure 82. Installing the microprocessor Figure 83. Closing the retainer Chapter 6 Hardware removal and installation...

  • Page 106: Serial Connector Module

    Figure 84. Securing the retainer with the handle 10. Reinstall the removed parts. 11. Place the computer in an upright position. 12. If a locking device is available, use it to lock the computer. 13. Reconnect the external cables and power cords to the corresponding connectors on the computer. Serial connector module Prerequisite Before you start, read Chapter 1 “Important safety information”...
  • Page 107 Figure 85. Removing the serial connector module Figure 86. Installing the serial connector module • M90a Figure 87. Removing the serial connector module Chapter 6 Hardware removal and installation...

  • Page 108: Cable Cover

    Figure 88. Installing the serial connector module 10. Connect the new serial connector cable to the system board. 11. Reinstall the removed parts. 12. Place the computer in an upright position. 13. If a locking device is available, use it to lock the computer. 14.
  • Page 109 Figure 89. Removing the cable cover Figure 90. Installing the cable cover • M90a Figure 91. Removing the cable cover Chapter 6 Hardware removal and installation...

  • Page 110: Memory Module

    Figure 92. Installing the cable cover 10. Reinstall the removed parts. 11. Place the computer in an upright position. 12. If a locking device is available, use it to lock the computer. 13. Reconnect the external cables and power cords to the corresponding connectors on the computer. Memory module Prerequisite Before you start, read Chapter 1 “Important safety information”...
  • Page 111 Figure 93. M70a memory module slots Figure 94. M90a memory module slots Chapter 6 Hardware removal and installation...
  • Page 112 1. Remove the computer stand. See “Computer stand” on page 61. 2. Remove the rear cover. See “Rear cover” on page 65. 3. Remove the optical drive. See “Optical drive” on page 66. 4. Remove the optical drive holder. See “Optical drive holder” on page 69. 5.

  • Page 113: Wi-Fi Card

    Figure 97. Removing a memory module Figure 98. Installing a memory module 9. Reinstall the removed parts. 10. Place the computer in an upright position. 11. If a locking device is available, use it to lock the computer. 12. Reconnect the external cables and power cords to the corresponding connectors on the computer. Wi-Fi card Prerequisite Before you start, read Chapter 1 “Important safety information”...
  • Page 114 Replacement procedure 1. Remove the computer stand. See “Computer stand” on page 61. 2. Remove the rear cover. See “Rear cover” on page 65. 3. Remove the optical drive. See “Optical drive” on page 66. 4. Remove the optical drive holder. See “Optical drive holder” on page 69. 5.
  • Page 115 Figure 103. Connecting the Wi-Fi antenna cables Figure 104. Installing the Wi-Fi card shield • M90a Figure 105. Removing the Wi-Fi card shield Figure 106. Disconnecting the Wi-Fi antenna cables Figure 107. Removing the Wi-Fi card Chapter 6 Hardware removal and installation...

  • Page 116: Coin-Cell Battery

    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.
  • Page 117 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. The coin-cell battery normally requires no charging or maintenance throughout its life; however, no coin-cell battery lasts forever.
  • Page 118 Figure 112. Installing the coin-cell battery • M90a Figure 113. Removing the coin-cell battery M70a and M90a Hardware Maintenance Manual...

  • Page 119: Cover Presence Switch (Intrusion Switch)

    Figure 114. Installing the coin-cell battery 10. Reinstall the removed parts. 11. Place the computer in an upright position. 12. If a locking device is available, use it to lock the computer. 13. Reconnect the external cables and power cords to the corresponding connectors on the computer. Cover presence switch (intrusion switch) Prerequisite Before you start, read Chapter 1 “Important safety information”...
  • Page 120 Figure 115. Removing the cover presence switch (intrusion switch) Figure 116. Installing the cover presence switch (intrusion switch) • M90a Figure 117. Removing the cover presence switch (intrusion switch) M70a and M90a Hardware Maintenance Manual...

  • Page 121: E-Privacy Button Board (M90A)

    Figure 118. Installing the cover presence switch (intrusion switch) 9. Connect the new cover presence switch cable (intrusion switch cable) to the system board. 10. Reinstall the removed parts. 11. Place the computer in an upright position. 12. If a locking device is available, use it to lock the computer. 13.

  • Page 122: Card Reader

    Figure 119. Removing the e-Privacy button board Figure 120. Installing the e-Privacy button board 9. Connect the new e-Privacy cable to the system board. 10. Reinstall the removed parts. 11. Place the computer in an upright position. 12. If a locking device is available, use it to lock the computer. 13.
  • Page 123 2. Remove the rear cover. See “Rear cover” on page 65. 3. Remove the optical drive. See “Optical drive” on page 66. 4. Remove the optical drive holder. See “Optical drive holder” on page 69. 5. Remove the system board shield. See “System board shield” on page 71. 6.
  • Page 124 Figure 123. Removing the card reader Figure 124. Installing the card reader 9. Connect the new card reader cable to the system board. 10. Reinstall the removed parts. 11. Place the computer in an upright position. 12. If a locking device is available, use it to lock the computer. 13.

  • Page 125: System Board

    System board Prerequisite Before you start, read Chapter 1 “Important safety information” on page 1 and print the following instructions. Replacement procedure 1. Remove the computer stand. See “Computer stand” on page 61. 2. Remove the rear cover. See “Rear cover” on page 65. 3.
  • Page 126 Figure 125. Removing the system board Figure 126. Installing the system board Figure 127. Installing the system board screws • M90a M70a and M90a Hardware Maintenance Manual...
  • Page 127 Figure 128. Removing the system board Figure 129. Installing the system board Figure 130. Installing the system board screws 20. Route and connect all the cables to the new system board. 21. Reinstall the removed parts. 22. Place the computer in an upright position. Chapter 6 Hardware removal and installation...

  • Page 128: Internal Speakers

    23. If a locking device is available, use it to lock the computer. 24. Reconnect the external cables and power cords to the corresponding connectors on the computer. Internal speakers Prerequisite Before you start, read Chapter 1 “Important safety information” on page 1 and print the following instructions.
  • Page 129 Figure 132. Installing the internal speakers • M90a Figure 133. Removing the internal speakers Figure 134. Installing the internal speakers Chapter 6 Hardware removal and installation...

  • Page 130: I/O Brackets (M90A)

    12. Connect the new internal speaker cable to the system board. 13. Reinstall the removed parts. 14. Place the computer in an upright position. 15. If a locking device is available, use it to lock the computer. 16. Reconnect the external cables and power cords to the corresponding connectors on the computer. I/O brackets (M90a) Prerequisite Before you start, read Chapter 1 “Important safety information”...
  • Page 131 Figure 136. Installing the left I/O bracket 12. Reinstall the removed parts. 13. Place the computer in an upright position. 14. If a locking device is available, use it to lock the computer. 15. Reconnect the external cables and power cords to the corresponding connectors on the computer. Replacement procedure of the right I/O bracket 1.
  • Page 132 Figure 137. Removing the right I/O bracket Figure 138. Removing the right I/O bracket from the main frame Figure 139. Installing the right I/O bracket to the main frame M70a and M90a Hardware Maintenance Manual...

  • Page 133: Integrated Camera And Microphone Module

    Figure 140. Installing the right I/O bracket 21. Reinstall the removed parts. 22. Place the computer in an upright position. 23. If a locking device is available, use it to lock the computer. 24. Reconnect the external cables and power cords to the corresponding connectors on the computer. Integrated camera and microphone module Prerequisite Before you start, read Chapter 1 “Important safety information”...
  • Page 134 Figure 141. Removing the shield of the integrated camera and microphone module Figure 142. Removing the integrated camera and microphone module Figure 143. Installing the integrated camera and microphone module M70a and M90a Hardware Maintenance Manual...
  • Page 135 Figure 144. Installing the shield of the integrated camera and microphone module • M90a Figure 145. Removing the shield of the integrated camera and microphone module Figure 146. Removing the integrated camera and microphone module Chapter 6 Hardware removal and installation...

  • Page 136: Main Frame

    Figure 147. Installing the integrated camera and microphone module Figure 148. Installing the shield of the integrated camera and microphone module 10. Connect the new integrated camera and microphone module cable to the system board. 11. Reinstall the removed parts. 12.
  • Page 137 5. Remove the system board shield. See “System board shield” on page 71. 6. Remove the VESA mount bracket cover. See “VESA mount bracket cover” on page 74. 7. Remove the VESA mount bracket. See “VESA mount bracket” on page 76. 8.
  • Page 138 Figure 149. Removing the main frame Figure 150. Installing the main frame • M90a M70a and M90a Hardware Maintenance Manual...

  • Page 139: Front Decoration Cover

    Figure 151. Removing the main frame Figure 152. Installing the main frame 26. Reinstall the removed parts. 27. Place the computer in an upright position. 28. If a locking device is available, use it to lock the computer. 29. Reconnect the external cables and power cords to the corresponding connectors on the computer. Front decoration cover Attention: Do not open your computer or attempt any repairs before reading the Important Product Information Guide.
  • Page 140 7. Remove the VESA mount bracket. See “VESA mount bracket” on page 76. 8. Remove the storage drive. See “Storage drive and storage drive bracket” on page 78. 9. Remove the system fan. See “System fan” on page 83. 10. Remove the heat sink. See “Heat sink” on page 85. 11.
  • Page 141 Figure 154. Installing the front decoration cover • M90a Figure 155. Removing the front decoration cover Figure 156. Installing the front decoration cover 27. Reinstall the removed parts. Chapter 6 Hardware removal and installation...

  • Page 142: Wi-Fi Antennas

    28. Place the computer in an upright position. 29. If a locking device is available, use it to lock the computer. 30. Reconnect the external cables and power cords to the corresponding connectors on the computer. Wi-Fi antennas Prerequisite Before you start, read Chapter 1 “Important safety information” on page 1 and print the following instructions.
  • Page 143 Figure 157. Releasing the Wi-Fi antennas and cables Figure 158. Removing the Wi-Fi antennas Figure 159. Installing the Wi-Fi antennas Chapter 6 Hardware removal and installation...
  • Page 144 Figure 160. Routing the Wi-Fi antennas and cables • M90a Figure 161. Releasing the Wi-Fi antennas and cables Figure 162. Removing the Wi-Fi antennas M70a and M90a Hardware Maintenance Manual...

  • Page 145: Lcd Bracket And Lcd Panel

    Figure 163. Installing the Wi-Fi antennas Figure 164. Routing the Wi-Fi antennas and cables 27. Reinstall the removed parts. 28. Place the computer in an upright position. 29. If a locking device is available, use it to lock the computer. 30.
  • Page 146 5. Remove the system board shield. See “System board shield” on page 71. 6. Remove the VESA mount bracket cover. See “VESA mount bracket cover” on page 74. 7. Remove the VESA mount bracket. See “VESA mount bracket” on page 76. 8.
  • Page 147 Figure 165. Removing the LCD bracket and LCD panel Figure 166. Installing the LCD bracket and LCD panel • M90a Chapter 6 Hardware removal and installation...
  • Page 148 Figure 167. Removing the LCD bracket and LCD panel Figure 168. Installing the LCD bracket and LCD panel 30. Route and connect all the cables to the new LCD panel. 31. Reinstall the removed parts. 32. Place the computer in an upright position. 33.

  • Page 149: Appendix A. 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 150 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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