Lenovo ThinkCentre M70s Hardware Maintenance Manual
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Lenovo ThinkCentre M70s Hardware Maintenance Manual

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M70s and M80s
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Summary of Contents for Lenovo ThinkCentre M70s

  • Page 1 M70s and M80s Hardware Maintenance Manual...
  • Page 2 First Edition (April 2020) © Copyright Lenovo 2020. LIMITED AND RESTRICTED RIGHTS NOTICE: If data or software is delivered pursuant to a General Services Administration “GSA” contract, use, reproduction, or disclosure is subject to restrictions set forth in Contract No. GS-...

  • Page 3: Table Of Contents

    Diagnostics ....Grounding requirements ... . 4 Lenovo diagnostic tools ..Safety notices (multi-lingual translations) ..4 UEFI diagnostic program .
  • Page 4 Internal speaker ... . . Microprocessor ... . . Illuminated red dot cable ..Cover presence switch .

  • Page 5: About This Manual

    Important: This manual is intended only for trained service technicians who are familiar with ThinkCentre computers. Use this manual along with the advanced diagnostic tests to troubleshoot problems effectively. Before servicing a ThinkCentre computer, be sure to read and understand Chapter 1 “Important safety information” on page 1. © Copyright Lenovo 2020...
  • Page 6 M70s and M80s Hardware Maintenance Manual...

  • Page 7: Chapter 1. Important Safety Information

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

  • Page 8: Electrical Safety

    Electrical safety CAUTION: Electrical current from power, telephone, and communication cables can be hazardous. To avoid personal injury or equipment damage, disconnect the attached power cords, telecommunication systems, networks, and modems before you open the computer covers, unless instructed otherwise in the installation and configuration procedures.

  • Page 9: Safety Inspection Guide

    • Do not service the following parts with the power on when they are removed from their normal operating places in a machine: – Power supply units – Pumps – Blowers and fans – Motor generators and similar units. (This practice ensures correct grounding of the units.) •...

  • Page 10: Handling Electrostatic Discharge-Sensitive Devices

    8. Check that the power-supply cover fasteners (screws or rivets) have not been removed or tampered with. Handling electrostatic discharge-sensitive devices Any computer part containing transistors or integrated circuits (ICs) should be considered sensitive to electrostatic discharge (ESD). ESD damage can occur when there is a difference in charge between objects. Protect against ESD damage by equalizing the charge so that the machine, the part, the work mat, and the person handling the part are all at the same charge.
  • Page 11 • Italian • Korean • Spanish DANGER Electrical current from power, telephone and communication cables is hazardous. To avoid a shock hazard: • Do not connect or disconnect any cables or perform installation, maintenance, or reconfiguration of this product during an electrical storm. •...
  • Page 12 CAUTION: When laser products (such as CD-ROMs, DVD-ROM drives, fiber optic devices, or transmitters) are installed, note the following: • Do not remove the covers. Removing the covers of the laser product could result in exposure to hazardous laser radiation. There are no serviceable parts inside the device. •...
  • Page 13 Chapter 1 Important safety information...
  • Page 14 ≥18 kg (37 lb) ≥32 kg (70.5 lb) ≥55 kg (121.2 lb) M70s and M80s 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 M70s and M80s 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: M70s and M80s 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

    Use the error codes displayed on the screen to diagnose failures. If more than one error code is displayed, begin the diagnosis with the first error code. Whatever causes the first error code might also cause false error © Copyright Lenovo 2020...

  • Page 34: Strategy For Replacing Frus For Cto, Special-Bid, And Standard Models

    Dynamic Configure To Order (CTO) model This model provides the ability for a customer to configure a Lenovo solution from a Web site, and have this configuration sent to fulfillment, where it is built and shipped directly to the customer. The machine label and eSupport will load these products as the 4-character MT, 4-character model, and 2-character country code.

  • Page 35: Chapter 3. Product Overview

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

  • Page 36: Rear

    Rear M70s ™ 1. Audio line-out connector 2. HDMI out connector ® 3. DisplayPort out connectors 4. USB 2.0 connectors 5. USB 2.0 connector (with smart power-on) 6. Security-lock slot 7. PS/2 keyboard and mouse connector* 8. Serial connector 9. Ethernet connector 10.

  • Page 37: M80S

    M80s ™ 1. Audio line-out connector 2. HDMI out connector ® 3. DisplayPort out connectors 4. USB 3.2 connectors Gen 1 5. USB 3.2 connector Gen 1 (with smart power-on) 6. Security-lock slot 7. PS/2 keyboard and mouse connector* 8. Serial connector 9.
  • Page 38 M70s and M80s 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 2020...

  • 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

    Miscellaneous error conditions Message/Symptom FRU/Action Changing display colors Display/Monitor Computer will not power-off. See “Hard disk drive boot 1. Power Switch error” on page 34. 2. System Board 3. Riser card, if installed. Computer will not RPL from server 1. Ensure that the network is in startup sequence as the first device or the first device after diskette.

  • Page 44: Undetermined Problems

    Message/Symptom FRU/Action Non-system disk or disk error-type message with a 1. Diskette Drive known-good diagnostic diskette. 2. System Board 3. Diskette Drive Cable Other display symptoms not listed above (including blank 1. Display or illegible display) 2. System Board Power-on indicator or hard disk drive in-use light not on, 1.
  • Page 45 2. Remove or disconnect the following components (if installed) one at a time. a. External devices (modem, printer, or mouse) b. Any adapters c. Memory modules d. Extended video memory e. External Cache f. External Cache RAM g. Hard disk drive h.
  • Page 46 M70s and M80s Hardware Maintenance Manual...

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

    4. Run the diagnostic program. See “Diagnostics” on page 49. 5. Recover your operating system. See “Recovery” on page 50. 6. If the problem persists, contact Lenovo. Troubleshooting Use the troubleshooting information to find solutions to problems that have definite symptoms.

  • 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: 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 50 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 51 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 52: 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 53: 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 54: 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 55: 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 56: Recovery

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

  • Page 57: 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 58 • From Lenovo Vantage: Open Lenovo Vantage to check the available update packages. If the latest UEFI BIOS update package is available, follow the on-screen instructions to download and install the package. • From the Lenovo Support Web site: Go to and select the entry for your computer.

  • Page 59: Chapter 6. Hardware Removal And Installation

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

  • Page 60: 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 61 Number Description Self-service CRU Optional-service CRU Heat sink and fan assembly Memory module Microprocessor System board Coin-cell battery Wi-Fi card* Wi-Fi card shield* Chapter 6 Hardware removal and installation...
  • Page 62 Number Description Self-service CRU Optional-service CRU M.2 solid-state drive* M.2 solid-state drive bracket* Heat sink and thermal pad (type 2)* Heat sink and thermal pad (type 3)* Cover presence switch Card reader* Card reader bracket* Illuminated red dot cable Power button Front I/O bracket Thermal sensor Internal speaker*...
  • Page 63 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 64: System Board

    System board M70s 8-pin power connector Keyboard and mouse connector Microprocessor socket Microprocessor fan connector Memory slot (DIMM1) Memory slot (DIMM2) Memory slot (DIMM3) Memory slot (DIMM4) Illuminated red dot connector Power button connector Internal speaker connector 10-pin power connector SATA power connectors Auxiliary fan connector Clear CMOS / Recovery jumper...

  • Page 65: M80S

    M80s 8-pin power connector Keyboard and mouse connector Microprocessor socket Microprocessor fan connector Memory slot (DIMM1) Memory slot (DIMM2) Memory slot (DIMM3) Memory slot (DIMM4) Illuminated red dot connector Power button connector Internal speaker connector 10-pin power connector SATA power connectors Auxiliary fan connector Clear CMOS / Recovery jumper SATA 3.0 connectors...

  • Page 66: Removing And Installing Hardware

    Removing and installing hardware This section provides instructions on how to remove and install hardware for your computer. You can expand the capabilities of your computer and maintain your computer by removing or installing hardware. Attention: Do not open your computer or attempt any repair before reading and understanding the Chapter 1 “Important safety information”...

  • Page 67: Computer Cover

    4. Install the vertical stand. 5. Reconnect the power cord and all disconnected cables to the computer. Computer cover Prerequisite Before you start, read Chapter 1 “Important safety information” on page 1 and print the following instructions. Before you open the computer cover, turn off the computer and wait several minutes until the computer is cool.

  • Page 68: Front Bezel

    6. Remove the computer cover. 7. Install the computer cover. 8. Place the computer in an upright position. 9. Reinstall all the removed parts. Then, reconnect the power cord and all disconnected cables to the computer. Note: If a locking device is available, use it to lock the computer. Front bezel Prerequisite Before you start, read Chapter 1 “Important safety information”...

  • Page 69: Optical Drive

    2. Remove the front bezel. 3. Install the front bezel. 4. Reinstall all the removed parts. Then, reconnect the power cord and all disconnected cables to the computer. Optical drive Prerequisite Before you start, read Chapter 1 “Important safety information” on page 1 and print the following instructions.
  • Page 70 Replacement procedure 1. Remove the computer cover. See “Computer cover” on page 61. 2. Remove the front bezel. See “Front bezel” on page 62. 3. Disconnect the signal and power cable from the optical drive. 4. Remove the optical drive. 5.

  • Page 71: Drive Bay Assembly

    6. Install the optical drive bracket. 7. Install the optical drive. 8. Connect the signal and power cable to the new optical drive. 9. Reinstall all the removed parts. Then, reconnect the power cord and all disconnected cables to the computer.

  • Page 72: Storage Drive

    3. Remove the drive bay assembly. 4. Install the drive bay assembly. 5. Reinstall all the removed parts. Then, reconnect the power cord and all disconnected cables to the computer. Storage drive Prerequisite Before you start, read Chapter 1 “Important safety information” on page 1 and print the following instructions.
  • Page 73 • Replace the internal storage drive only for upgrade or repair. The internal storage drive is not designed for frequent changes or replacement. • Before replacing the internal storage drive, make a backup copy of all the data that you want to keep. •...
  • Page 74 7. Install the 3.5-inch primary storage drive. 8. Install the 3.5-inch primary storage drive with the bracket. 9. On the bottom of the drive bay assembly, connect the signal cable and the power cable to the new storage drive. 10. Reinstall all the removed parts. Then, reconnect the power cord and all disconnected cables to the computer.
  • Page 75 2. Remove the 2.5-inch primary storage drive from the storage converter. 3. Install the 2.5-inch primary storage drive to the storage converter. 4. On the bottom of the drive bay assembly, connect the signal cable and the power cable to the new storage drive.
  • Page 76 5. On the bottom of the drive bay assembly, disconnect the signal cable and the power cable from the 2.5- inch secondary storage drive. 6. Remove the 2.5-inch secondary storage drive with the bracket. 7. Remove the 2.5-inch secondary storage drive. M70s and M80s Hardware Maintenance Manual...

  • Page 77: Heat Sink (For The M.2 Solid-State Drive)

    8. Install the 2.5-inch secondary storage drive. 9. Install the 2.5-inch secondary storage drive with the bracket. 10. On the bottom of the drive bay assembly, connect the signal cable and the power cable to the new storage drive. 11. Reinstall all the removed parts. Then, reconnect the power cord and all disconnected cables to the computer.
  • Page 78 a. Pull out the stopper. b. Pull out the heat sink with the bracket. c. Remove the heat sink. M70s and M80s Hardware Maintenance Manual...
  • Page 79 d. Remove the M.2 solid-state drive. e. Remove the film that covers the thermal pad, if any. Then, install the M.2 solid-state drive. f. Remove the film that covers the thermal pad, if any. Then, install the heat sink. g. Insert the heat sink with the bracket. Chapter 6 Hardware removal and installation...
  • Page 80 h. Insert the stopper. • Type 3 a. Pull out the stopper. b. Pull out the heat sink with the M.2 solid-state drive. M70s and M80s Hardware Maintenance Manual...

  • Page 81: M.2 Solid-State Drive

    c. Remove the M.2 solid-state drive. d. Remove the film that covers the thermal pad, if any. Then, install the M.2 solid-state drive. e. Insert the heat sink with the M.2 solid-state drive. f. Insert the stopper. 5. Reinstall all the removed parts. Then, reconnect the power cord and all disconnected cables to the computer.
  • Page 82 When handling the internal storage drive, observe the following guidelines: • Do not attempt to replace the Optane memory in the M.2 solid-state drive slot. Replacement of the Optane memory must be done by a Lenovo-authorized repair facility or technician. For the replacement of the Optane memory, go to: https://support.lenovo.com/docs/tg_ssd...

  • Page 83: M.2 Solid-State Drive Bracket

    b. Remove the M.2 solid-state drive. c. Install the M.2 solid-state drive. d. Insert the stopper. 5. Reinstall all the removed parts. Then, reconnect the power cord and all disconnected cables to the computer. M.2 solid-state drive bracket Prerequisite Before you start, read Chapter 1 “Important safety information” on page 1 and print the following instructions.

  • Page 84: Wi-Fi Card

    5. Remove the M.2 solid-state drive bracket. 6. Install the M.2 solid-state drive bracket. 7. Reinstall all the removed parts. Then, reconnect the power cord and all disconnected cables to the computer. Wi-Fi card Prerequisite Before you start, read Chapter 1 “Important safety information” on page 1 and print the following instructions.
  • Page 85 4. Remove the Wi-Fi card (type 1 or type 2) and the shield. 5. Remove the Wi-Fi card shield. 6. Disconnect the Wi-Fi antenna cables. 7. Connect the Wi-Fi antenna cables. 8. Install the Wi-Fi card shield. Chapter 6 Hardware removal and installation...

  • Page 86: Wi-Fi Antennas

    9. Install the Wi-Fi card and the shield. 10. Reinstall all removed parts. Then, reconnect all disconnected cables to the computer and reconnect the power cord to the electrical outlet. Wi-Fi antennas Prerequisite Before you start, read Chapter 1 “Important safety information” on page 1 and print the following instructions.
  • Page 87 6. Install the internal Wi-Fi antenna. 7. Connect the new Wi-Fi antenna cables to the Wi-Fi card. 8. Reinstall all removed parts. Then, reconnect all disconnected cables to the computer and reconnect the power cord to the electrical outlet. The external Wi-Fi antenna 1.

  • Page 88: Memory Module

    4. Install the external Wi-Fi antenna. 5. Reconnect all disconnected cables to the computer and reconnect the power cord to the electrical outlet. Memory module Prerequisite Before you start, read Chapter 1 “Important safety information” on page 1 and print the following instructions.

  • Page 89: Pci-Express Connector Cable

    Replacement procedure 1. Remove the computer cover. See “Computer cover” on page 61. 2. Remove the front bezel. See “Front bezel” on page 62. 3. Remove the drive bay assembly. See “Drive bay assembly” on page 65. 4. Remove a memory module. 5.

  • Page 90: Pci-Express Card

    Replacement procedure 1. Remove the computer cover. See “Computer cover” on page 61. 2. Remove the front bezel. See “Front bezel” on page 62. 3. Disconnect the cable from the system board. 4. Remove the PCI-Express connector cable. 5. Install the PCI-Express connector cable. 6.

  • Page 91: Coin-Cell Battery

    3. Remove a PCI-Express card. 4. Remove the PCI-Express connector cable, if any. See “PCI-Express connector cable” on page 83. Then, install the PCI-Express card. 5. Reinstall all the removed parts. Then, reconnect the power cord and all disconnected cables to the computer.

  • Page 92: Power Supply Assembly

    Replacement procedure 1. Remove the computer cover. See “Computer cover” on page 61. 2. Remove the coin-cell battery. 3. Install the coin-cell battery. 4. Reinstall all the removed parts. Then, reconnect the power cord and all disconnected cables to the computer.
  • Page 93 Keep fingers and other parts of your body away from hazardous, moving parts. If you suffer an injury, seek medical care immediately.Never remove the cover on a power supply or any part that has the following label attached. Hazardous voltage, current, and energy levels are present inside any component that has this label attached. There are no serviceable parts inside these components.

  • Page 94: E-Lock

    6. Reinstall all the removed parts. Then, reconnect the power cord and all disconnected cables to the computer. E-lock Prerequisite Before you start, read Chapter 1 “Important safety information” on page 1 and print the following instructions. Note: To remove the screws, you need a special tool (T15 star wrench). 1.

  • Page 95: Internal Speaker

    Internal speaker Prerequisite Before you start, read Chapter 1 “Important safety information” on page 1 and print the following instructions. Replacement procedure 1. Remove the computer cover. See “Computer cover” on page 61. 2. Remove the front bezel. See “Front bezel” on page 62. 3.

  • Page 96: Illuminated Red Dot Cable

    6. Install the internal speaker. 7. Connect the internal speaker cable to the system board. 8. Reinstall all removed parts. Then, reconnect all disconnected cables to the computer and reconnect the power cord to the electrical outlet. Illuminated red dot cable Prerequisite Before you start, read Chapter 1 “Important safety information”...
  • Page 97 5. Remove the illuminated red dot. 6. Install the illuminated red dot. 7. Connect the illuminated red dot cable to the system board. 8. Reinstall all removed parts. Then, reconnect all disconnected cables to the computer and reconnect the power cord to the electrical outlet. Chapter 6 Hardware removal and installation...

  • Page 98: Thermal Sensor

    Thermal sensor Prerequisite Before you start, read Chapter 1 “Important safety information” on page 1 and print the following instructions. Replacement procedure 1. Remove the computer cover. See “Computer cover” on page 61. 2. Remove the front bezel. See “Front bezel” on page 62. 3.

  • Page 99: Front I/O Bracket And Power Button

    6. Install the thermal sensor. 7. Connect the thermal sensor cable to the system board. 8. Reinstall all removed parts. Then, reconnect all disconnected cables to the computer and reconnect the power cord to the electrical outlet. Front I/O bracket and power button Prerequisite Before you start, read Chapter 1 “Important safety information”...
  • Page 100 5. Remove the front I/O bracket. 6. Remove the power button. 7. Install the power button. M70s and M80s Hardware Maintenance Manual...

  • Page 101: Card Reader And Card Reader Bracket

    8. Install the front I/O bracket. 9. Connect the power button cable and the card reader cable to the system board. 10. Reinstall all removed parts. Then, reconnect all disconnected cables to the computer and reconnect the power cord to the electrical outlet. Card reader and card reader bracket Prerequisite Before you start, read Chapter 1 “Important safety information”...

  • Page 102: Heat Sink And Fan Assembly

    6. Remove the card reader bracket. 7. Install the card reader bracket. 8. Install the card reader. 9. Connect the card reader cable to the system board. 10. Reinstall all removed parts. Then, reconnect all disconnected cables to the computer and reconnect the power cord to the electrical outlet.
  • Page 103 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. 1. Remove the computer cover. See “Computer cover” on page 61. 2. Remove the optical drive. See “Optical drive” on page 63. 3.

  • Page 104: Microprocessor

    Microprocessor Prerequisite Before you start, read Chapter 1 “Important safety information” on page 1 and print the following instructions. Replacement procedure CAUTION: The heat sink and microprocessor might be very hot. Before you open the computer cover, turn off the computer and wait several minutes until the computer is cool.
  • Page 105 5. Pivot the microprocessor socket upward. 6. Remove the microprocessor. 7. Install the microprocessor. Chapter 6 Hardware removal and installation...

  • Page 106: Cover Presence Switch

    8. Pivot the microprocessor socket downward. 9. Lock the microprocessor socket retainer. 10. Reinstall all removed parts. Then, reconnect all disconnected cables to the computer and reconnect the power cord to the electrical outlet. Cover presence switch Prerequisite Before you start, read Chapter 1 “Important safety information” on page 1 and print the following instructions.

  • Page 107: System Board

    3. Remove the cover presence switch. 4. Install the cover presence switch. 5. Connect the new cover presence switch cable to the system board. 6. Reinstall all removed parts. Then, reconnect all disconnected cables to the computer and reconnect the power cord to the electrical outlet.
  • Page 108 8. To get access to the system board, remove the following parts if any: a. “Heat sink (for the M.2 solid-state drive)” on page 71. b. “M.2 solid-state drive” on page 75. c. “M.2 solid-state drive bracket” on page 77. d.
  • Page 109 12. Route all the cables that you disconnected from the failing system board, and then reconnect the cables to the new system board. 13. Reinstall all removed parts. Then, reconnect all disconnected cables to the computer and reconnect the power cord to the electrical outlet. Chapter 6 Hardware removal and installation...
  • Page 110 M70s and M80s Hardware Maintenance Manual...

  • Page 111: 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 112 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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