Lenovo ThinkCentre M73z Hardware Maintenance Manual
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Lenovo ThinkCentre M73z Hardware Maintenance Manual

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ThinkCentre M73z
Hardware Maintenance Manual
Machine Types: 10BB and 10BC

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Summary of Contents for Lenovo ThinkCentre M73z

  • Page 1 ThinkCentre M73z Hardware Maintenance Manual Machine Types: 10BB and 10BC...
  • Page 2 Appendix A “Notices” on page 123. Third Edition (June 2014) © Copyright Lenovo 2013, 2014. LIMITED AND RESTRICTED RIGHTS NOTICE: If data or software are delivered pursuant a General Services Administration “GSA” contract, use, reproduction, or disclosure is subject to restrictions set forth in Contract No.

  • Page 3: Table Of Contents

    ..Changing the BIOS settings before installing a new Lenovo Support Web site ..operating system....
  • Page 4 Index....Completing the parts replacement ..Chapter 9. Additional service information ... . . ThinkCentre M73z Hardware Maintenance Manual...

  • Page 5: About This Manual

    For FRU replacement instructions, see Chapter 8 “Replacing FRUs” on page 73. For FRU part numbers, go to: http:/www.lenovo.com/serviceparts-lookup 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.

  • Page 7: Chapter 1. Safety Information

    • Reinstall all covers correctly before returning the machine to the customer. 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 © Copyright Lenovo 2013, 2014...
  • Page 8 • 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.) • If an electrical accident occurs: ThinkCentre M73z Hardware Maintenance Manual...

  • Page 9: Safety Inspection Guide

    – Use caution; do not become a victim yourself. – Switch off power. – Send another person to get medical aid. Safety inspection guide The intent of this inspection guide is to assist you in identifying potentially unsafe conditions on these products.

  • Page 10: Grounding Requirements

    • Brazilian/Portuguese • Chinese (simplified) • Chinese (traditional) • French • German • Hebrew • Italian • Korean • Spanish DANGER Electrical current from power, telephone and communication cables is hazardous. To avoid a shock hazard: ThinkCentre M73z Hardware Maintenance Manual...
  • Page 11 • 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. • Connect to properly wired outlets any equipment that will be attached to this product. •...
  • Page 12 The device also might have more than one power cord. To remove all electrical current from the device, ensure that all power cords are disconnected from the power source. ThinkCentre M73z Hardware Maintenance Manual...
  • Page 13 Chapter 1 Safety information...
  • Page 14 ≥18 kg (37 lb) ≥32 kg (70.5 lb) ≥55 kg (121.2 lb) PERIGO A corrente elétrica proveniente de cabos de alimentação, de telefone e de comunicações é perigosa. ThinkCentre M73z Hardware Maintenance Manual...
  • Page 15 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. • Conecte todos os cabos de alimentação a tomadas elétricas corretamente instaladas e aterradas. •...
  • Page 16 O dispositivo também pode ter mais de um cabo de alimentação. Para remover toda a corrente elétrica do dispositivo, assegure que todos os cabos de alimentação estejam desconectados da fonte de alimentação. ThinkCentre M73z Hardware Maintenance Manual...
  • Page 17 Chapter 1 Safety information...
  • Page 18 ThinkCentre M73z Hardware Maintenance Manual...
  • Page 19 Chapter 1 Safety information...
  • Page 20 • l'exposer à des températures supérieures à 100°C, • chercher à la réparer ou à la démonter. Ne pas mettre la pile à la poubelle. Pour la mise au rebut, se reporter à la réglementation en vigueur. ThinkCentre M73z Hardware Maintenance Manual...
  • Page 21 ATTENTION: Si des produits à laser (tels que des unités de CD-ROM, de DVD-ROM, des unités à fibres optiques, ou des émetteurs) sont installés, prenez connaissance des informations suivantes : • Ne retirez pas le carter. En ouvrant l'unité de CD-ROM ou de DVD-ROM, vous vous exposez au rayonnement dangereux du laser.
  • Page 22 Lithiumbatterie, dieses nur durch ein Modul desselben Typs und von demselben Hersteller ersetzen. Die Batterie enthält Lithium und kann bei unsachgemäßer Verwendung, Handhabung oder Entsorgung explodieren. Die Batterie nicht: • mit Wasser in Berührung bringen. ThinkCentre M73z Hardware Maintenance Manual...
  • Page 23 • über 100 C erhitzen. • reparieren oder zerlegen. Die örtlichen Bestimmungen für die Entsorgung von Sondermüll beachten. ACHTUNG: Bei der Installation von Lasergeräten (wie CD-ROM-Laufwerken, DVD- aufwerken, Einheiten mit Lichtwellenleitertechnik oder Sendern) Folgendes beachten: • Die Abdeckungen nicht entfernen. Durch Entfernen der Abdeckungen des Lasergeräts können gefährliche Laserstrahlungen freigesetzt werden.
  • Page 24 ThinkCentre M73z Hardware Maintenance Manual...
  • Page 25 Chapter 1 Safety information...
  • Page 26 • Riscaldarla ad una temperatura superiore ai 100 gradi C (212 gradi F) • Smontarla, ricaricarla o tentare di ripararla Le batterie usate vanno smaltite in accordo alla normativa in vigore (DPR 915/82 e successive disposizioni e disposizioni locali). ThinkCentre M73z Hardware Maintenance Manual...
  • Page 27 ATTENZIONE: 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 28 ThinkCentre M73z Hardware Maintenance Manual...
  • Page 29 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 30 • No quite las cubiertas. Si quita las cubiertas del producto láser, podría quedar expuesto a radiación láser peligrosa. Dentro del dispositivo no existe ninguna pieza que requiera servicio técnico. • Si usa controles o ajustes o realiza procedimientos que no sean los especificados aquí, podría exponerse a radiaciones peligrosas. PELIGRO ThinkCentre M73z Hardware Maintenance Manual...
  • Page 31 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 32 ThinkCentre M73z Hardware Maintenance Manual...

  • Page 33: Chapter 2. General Information

    Maximum: 240 V ac Input frequency range: 50 to 60 Hz Lenovo programs Your computer comes with Lenovo programs to help you work more easily and securely. Depending on the Windows operating system preinstalled, the programs might vary. © Copyright Lenovo 2013, 2014...

  • Page 34: Accessing Lenovo Programs On The Windows 7 Operating System

    Control Panel. The icon name displayed in the search result or Control Panel might be different from the program name. You can find the program by its program name or icon name as shown in the Lenovo programs available on the Windows 7 operating system table.

  • Page 35: Accessing Lenovo Programs On The Windows 8 Or Windows 8.1 Operating System

    • On the Windows 8.1 operating system, press the Windows key to go to the Start screen. Click a Lenovo program to launch it. If you cannot find the program you need, click the arrow icon in the bottom-left corner of the screen to go to the Apps screen. Find the desired program in the apps list or search for it in the search box in the top-right corner of the screen.
  • Page 36 ThinkCentre M73z Hardware Maintenance Manual...

  • Page 37: Chapter 3. General Checkout

    Service Support and Engineering functions. • 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? © Copyright Lenovo 2013, 2014...
  • Page 38 7. Have the same configuration options set in the system 8. Have the same setup for the operating system control files Comparing the configuration and software set-up between “working and non-working” systems will often lead to problem resolution. ThinkCentre M73z Hardware Maintenance Manual...

  • Page 39: Chapter 4. Troubleshooting And Diagnostics

    Chapter 4. Troubleshooting and diagnostics This chapter provides information about diagnosing and troubleshooting computer problems. If your computer problem is not described here, see “Lenovo Support Web site” on page 29 for additional troubleshooting resources. Basic troubleshooting The following table provides information to help you troubleshoot your computer problems.

  • Page 40: Accessing Control Panel On The Windows 8 Or Windows 8.1 Operating System

    To restore a captured configuration, do the following: • For Windows 7: Click Start ➙ Control Panel ➙ System and Security ➙ System ➙ System Protection ➙ System Restore. ThinkCentre M73z Hardware Maintenance Manual...

  • Page 41: Troubleshooting

    • If the diagnostic program detects a hardware failure, contact the Lenovo Customer Support Center. See “Lenovo Support Web site” on page 29 for more information. • If you are unable to run the diagnostic program, contact the Lenovo Customer Support Center. See “Lenovo Support Web site” on page 29 for more information.
  • Page 42 • Verify that the audio device drivers are correctly installed. See Microsoft Windows help system for more information. If these actions do not correct the problem, run the Lenovo Solution Center program. If you need technical assistance, see “Lenovo Support Web site” on page 29.

  • Page 43: Cd Problems

    Refer to the documentation that comes with the application or game for instructions on setting sound-card settings. • If these actions do not correct the problem, run the Lenovo Solution Center program. If you need technical assistance, see “Lenovo Support Web site” on page 29.

  • Page 44: Dvd Problems

    Note that on some models the startup sequence is permanently set and cannot be changed. If these actions do not correct the problem, run the Lenovo Solution Center program. If you need technical assistance, see “Lenovo Support Web site” on page 29.

  • Page 45: Intermittent Problems

    • Use the DVD menu for the video to select a different audio track. If these actions do not correct the problem, run the Lenovo Solution Center program. If you need technical assistance, see “Lenovo Support Web site” on page 29.

  • Page 46: Keyboard, Mouse, Or Pointing Device Problems

    If these actions do not correct the problem, run the diagnostic program Lenovo Solution Center. See “Lenovo Solution Center” on page 52. If you need technical assistance, see “Lenovo Support Web site” on page 29. "No Operating System Found" message or the system not starting from the correct hard disk drive Symptom: "No Operating System Found"...
  • Page 47 • If you are using a USB keyboard or mouse, verify that the USB connectors are enabled in the BIOS settings. See “Enabling or disabling a device” on page 55. If these actions do not correct the problem, run the Lenovo Solution Center program. If you need technical assistance, see “Lenovo Support Web site” on page 29.

  • Page 48: Monitor Problems

    43 • “The monitor works when you turn on the computer, but goes blank when you start some application programs” on page 43 • “The image appears to be flickering” on page 43 ThinkCentre M73z Hardware Maintenance Manual...
  • Page 49 If these actions do not correct the problem, run the Lenovo Solution Center program. If you need technical assistance, see “Lenovo Support Web site” on page 29.

  • Page 50: Networking Problems

    • See your operating system documentation or help for further information on monitor settings. If these actions do not correct the problem, your monitor might need service. See “Lenovo Support Web site” on page 29 for details.
  • Page 51 meters. If the cable is connected and the distance is within acceptable limits but the problem persists, try a different cable. • The cable is installed properly. • You are using the correct device driver. On the Windows 7 operating system, do the following: 1.

  • Page 52: Option Problems

    6. Click OK to close the Sound window. Note: Bluetooth is supported only on some computer models. Option problems Use this information to diagnose problems with Lenovo hardware options that do not have their own troubleshooting information. Select your symptom from the following list: •...

  • Page 53: Performance And Lockup Problems

    See the documentation supplied with the adapter (as well as the documentation for any other installed adapters) to determine the resources required for each adapter. If these actions do not correct the problem, run the Lenovo Solution Center program. If you need technical assistance, see “Lenovo Support Web site” on page 29.
  • Page 54 On the Windows 7 operating system, do the following: 1. Close any programs that are currently running and close any open windows. 2. Click Start ➙ Computer. ThinkCentre M73z Hardware Maintenance Manual...

  • Page 55: Printer Problems

    29. For step-by-step instructions on installing memory, see “Installing or replacing a memory module” on page 104. If these actions do not correct the problem, run the diagnostic programs (see “Lenovo Solution Center” on page 52 for instructions). If you need technical assistance, see “Lenovo Support Web site” on page 29.

  • Page 56: Software Problems

    • Ensure that the serial-connector adapter, if you added one, is properly installed and firmly seated. If these actions do not correct the problem, run the Lenovo Solution Center program. If you need technical assistance, see “Lenovo Support Web site” on page 29.

  • Page 57: Usb Problems

    • Reset the device by detaching and reattaching the USB connector. If these actions do not correct the problem, run the Lenovo Solution Center program to test the USB connector. If the USB device came with its own diagnostics, run those diagnostics against the USB device.

  • Page 58: Lenovo Solution Center

    Note: If you are unable to isolate and repair the problem yourself after running the program, save and print the log files. You will need the log files when you speak to a Lenovo technical support representative. UEFI diagnostic program A UEFI diagnostic program is preinstalled on the computer.

  • Page 59: Chapter 5. Using The Setup Utility Program

    Using passwords By using the Setup Utility program, you can set passwords to prevent unauthorized access to your computer and data. The following types of passwords are available: • Power-On Password © Copyright Lenovo 2013, 2014...

  • Page 60: Password Considerations

    Note: A password can be any combination of up to 64 alphabetic and numeric characters. For more information, see “Password considerations” on page 54. Erasing lost or forgotten passwords (clearing CMOS) This section provides instructions on how to erase lost or forgotten passwords, such as a user password. ThinkCentre M73z Hardware Maintenance Manual...

  • Page 61: Enabling Or Disabling A Device

    To erase a lost or forgotten password, do the following: 1. Remove all media from the drives and turn off all attached devices and the computer. Then, disconnect all power cords from electrical outlets and disconnect all cables that are connected to the computer. 2.

  • Page 62: Selecting A Temporary Startup Device

    57. Enabling ErP LPS compliance mode Lenovo computers meet the eco-design requirements of the ErP Lot 3 regulation. For more information, go http://www.lenovo.com/ecodeclaration You can enable the energy-related products directive (ErP) lowest power state (LPS) compliance mode in the Setup Utility program to reduce the consumption of electricity when your computer is in sleep or off mode.

  • Page 63: Changing The Bios Settings Before Installing A New Operating System

    1. Start the Setup Utility program. 2. From the Setup Utility program main menu, select Power ➙ Automatic Power On, and press Enter. 3. Select Wake Up on Alarm and press Enter. Then follow the instructions on the screen. 4. Press F10 to save changes and exit the Setup Utility program. Press Enter when prompted to confirm the exit.
  • Page 64 ThinkCentre M73z Hardware Maintenance Manual...

  • Page 65: Chapter 6. Symptom-To-Fru Index

    Check the power cord for continuity. Power cord Check the power-on switch for continuity. Power-on switch Beep symptoms Beep symptoms are tones or a series of tones separated by pauses (intervals without sound) during POST. © Copyright Lenovo 2013, 2014...

  • Page 66: Post Error Codes

    0164 Memory size decreased Press F10 to exit. 1762 Configuration change has occurred This error message is displayed when a hard disk drive or optical drive change has been made. Press F10 to exit. ThinkCentre M73z Hardware Maintenance Manual...

  • Page 67: Miscellaneous Error Conditions

    Error code POST error message Description/Action 1820 More than one external fingerprint If more than one external fingerprint reader are attached. Power off and reader are connected to a computer, remove all but the reader that you set this error message will be displayed up within your main operating system.
  • Page 68 RPL computer does not RPL from server 1. Check startup sequence. 2. Check the network adapter LED status. Serial or parallel connector device failure (system board 1. External Device Self-Test OK? connector) 2. External Device 3. Cable 4. System Board ThinkCentre M73z Hardware Maintenance Manual...

  • Page 69: Undetermined Problems

    Message/Symptom FRU/Action Serial or parallel connector device failure (adapter 1. External Device Self-Test OK? connector) 2. External Device 3. Cable 4. Alternate Adapter 5. System Board 1. Keyboard Some or all keys on the keyboard do not work 2. Keyboard Cable 3.
  • Page 70 ThinkCentre M73z Hardware Maintenance Manual...

  • Page 71: Chapter 7. Locations

    Figure 1. Front connector, control, and indicator locations Integrated camera indicator Internal speaker Integrated camera block shield Card reader Integrated camera USB 3.0 connector Integrated Microphone Headphone connector Power indicator Microphone connector Hard disk drive activity indictor USB 3.0 connector © Copyright Lenovo 2013, 2014...
  • Page 72 Used to attach a device that requires a USB 2.0 or 3.0 connector, such as a keyboard, a mouse, a scanner, a printer, or a personal digital assistant (PDA). A USB 3.0 connector provides high transmission speeds to reduce the time that is required for data transmission. ThinkCentre M73z Hardware Maintenance Manual...

  • Page 73: Locating Connectors On The Rear Of Your Computer

    Locating connectors on the rear of your computer Figure 2 “Rear connector locations” on page 67 shows the locations of the connectors on the rear of your computer. Some connectors on the rear of your computer are color-coded to help you determine where to connect the cables on your computer.

  • Page 74: Locating Major Frus And Crus

    Figure 3 “Locating major FRUs and CRUs” on page 69 shows the locations of the major FRUs and CRUs in the computer. To remove the computer cover, see “Removing the computer cover” on page 76. ThinkCentre M73z Hardware Maintenance Manual...
  • Page 75 Figure 3. Locating major FRUs and CRUs Chapter 7 Locations...
  • Page 76 Wi-Fi card (optional) Rear I/O assembly Internal speakers (2) U-shaped stand Power supply assembly Control button board Hard disk drive Hard-disk-drive EMI shield Converter board Optical drive (optional) ® VESA mount bracket Integrated camera (optional) Keyboard Mouse ThinkCentre M73z Hardware Maintenance Manual...

  • Page 77: Looking Up Fru Information

    Looking up FRU information For detailed FRU information, such as the FRU part numbers and supported computer models, go to: http:/www.lenovo.com/serviceparts-lookup Locating parts on the system board Figure 4 “Locations of the parts and connectors on the system board” on page 71 shows the locations of the parts and connectors on the system board.
  • Page 78 Internal speaker connector Microprocessor fan connector Microprocessor Card reader connector ThinkCentre M73z Hardware Maintenance Manual...

  • Page 79: Chapter 8. Replacing Frus

    2. Place a soft, clean towel or cloth on the desk or surface. Hold the sides of your computer and gently lay it down so that the screen is against the surface and the cover is facing up. © Copyright Lenovo 2013, 2014...

  • Page 80: Removing And Installing The Full-Function Monitor Stand

    2. Place a soft, clean towel or cloth on the desk or surface. Hold the sides of your computer and gently lay it down so that the screen is against the surface and the cover is facing up. ThinkCentre M73z Hardware Maintenance Manual...

  • Page 81: Removing And Installing The Tilt-Only Monitor Stand

    3. Remove the four rubber cushions, and then remove the four screws that secure the full-function monitor stand. Remove the full-function monitor stand from the computer. Figure 7. Removing the full-function monitor stand 4. To install the full-function monitor stand, position the full-function monitor stand over the computer so that the four screw holes in the stand align with the corresponding holes in the computer cover.

  • Page 82: Removing The Computer Cover

    Removing the computer cover Attention: Do not open your computer or attempt any repair before reading and understanding the Chapter 1 “Safety information” on page 1. This section provides instructions on how to remove the computer cover. ThinkCentre M73z Hardware Maintenance Manual...

  • Page 83: Removing And Installing The U-Shaped Stand

    CAUTION: Before you open the computer cover, turn off the computer and wait several minutes until the computer is cool. To remove the computer cover, do the following: 1. Remove all media from the drives and turn off all attached devices and the computer. Then, disconnect all power cords from electrical outlets and disconnect all cables that are connected to the computer.
  • Page 84 6. To install the U-shaped stand, insert the U-shaped stand into the chassis so that the four screw holes in the stand align with the corresponding holes in the chassis. Figure 12. Installing the U-shaped stand ThinkCentre M73z Hardware Maintenance Manual...

  • Page 85: Removing And Installing The Hard-Disk-Drive Emi Shield

    7. Install the four screws to secure the U-shaped stand to the chassis. Figure 13. Installing the four screws to secure the U-shaped stand What to do next: • To work with another piece of hardware, go to the appropriate section. •...
  • Page 86 5. Pivot the hard-disk-drive EMI shield as shown to remove it from the hard-disk-drive bracket, and then lift the EMI shield out of the chassis. Figure 14. Removing the hard-disk-drive EMI shield ThinkCentre M73z Hardware Maintenance Manual...

  • Page 87: Replacing The 3.5-Inch Hard Disk Drive Or Hybrid Hard Disk Drive

    6. To install the hard-disk-drive EMI shield, align the hole in the EMI shield with the standoff in the chassis as shown. Then, push the EMI shield straight down until it is secured by the standoff firmly and the three tabs on the EMI shield also are secured by the corresponding holes in the chassis.
  • Page 88 7. Remove the screw , and then pivot the hard-disk-drive bracket with the hard disk drive as shown to remove it from the chassis. Figure 16. Removing the hard-disk-drive bracket with the hard disk drive ThinkCentre M73z Hardware Maintenance Manual...

  • Page 89: Replacing The 2.5-Inch Solid-State Drive Or Hybrid Hard Disk Drive

    8. Remove the four screws that secure the hard disk drive to the bracket, and then remove the hard disk drive from the bracket. Do not touch the circuit board on the bottom of the hard disk drive. Figure 17. Removing the hard disk drive from the bracket 9.
  • Page 90 10. Position the bracket with the new solid-state drive in the chassis so that the screw hole in the bracket aligns with the corresponding hole in the chassis. Then, install the screw to secure the bracket with the solid-state drive to the chassis. ThinkCentre M73z Hardware Maintenance Manual...

  • Page 91: Replacing The Optical Drive

    11. Connect the solid-state drive cable to the new solid-state drive. 12. Install the hard-disk-drive EMI shield. See “Removing and installing the hard-disk-drive EMI shield” on page 79. What to do next: • To work with another piece of hardware, go to the appropriate section. •...

  • Page 92: Replacing The Converter Board

    • To complete the installation or replacement, go to “Completing the parts replacement” on page 118. Replacing the converter board Attention: Do not open your computer or attempt any repair before reading and understanding the Chapter 1 “Safety information” on page 1. ThinkCentre M73z Hardware Maintenance Manual...
  • Page 93 This section provides instructions on how to replace the converter board. To replace the converter board, do the following: 1. Remove all media from the drives and turn off all attached devices and the computer. Then, disconnect all power cords from electrical outlets and disconnect all cables that are connected to the computer. 2.

  • Page 94: Removing And Installing The System Board Shield

    6. To install the system board shield, position the system board shield into the chassis so that the two screw holes in the system board shield align with the corresponding holes in the chassis. 7. Install the two screws to secure the system board shield to the chassis. ThinkCentre M73z Hardware Maintenance Manual...

  • Page 95: Replacing The Rear I/O Assembly

    What to do next: • To work with another piece of hardware, go to the appropriate section. • To complete the installation or replacement, go to “Completing the parts replacement” on page 118. Replacing the rear I/O assembly Attention: Do not open your computer or attempt any repair before reading and understanding the Chapter 1 “Safety information”...
  • Page 96 10. Note the orientation of the power cord connector and install it onto the new rear I/O assembly. Ensure that the two screw holes in the power cord connector align with the corresponding holes in the new rear I/O assembly. ThinkCentre M73z Hardware Maintenance Manual...
  • Page 97 11. Position the new rear I/O assembly over the rear I/O assembly connector on the system board so that the notch on the rear I/O assembly aligns with the key in the connector. Then, insert the rear I/O assembly into the connector until it is seated firmly and the four screw holes align with the corresponding holes in the chassis.

  • Page 98: Replacing The Internal Speakers

    7. Note the routing of the internal-speaker cables, and then disconnect the internal-speaker cables from the system board. 8. Lift the internal speakers to remove them from the chassis. Figure 29. Removing the internal speakers ThinkCentre M73z Hardware Maintenance Manual...

  • Page 99: Removing And Installing The Vesa Mount Bracket

    9. To install the new internal speakers, position the new internal speakers in the chassis so that each speaker is secured by the corresponding two tabs on the front bezel. Figure 30. Installing the internal speakers 10. Route the cables of new internal speakers, and then connect the cables to the system board. See “Locating parts on the system board”...

  • Page 100: Replacing The Power Supply Assembly

    Although there are no moving parts in your computer after the power cord has been disconnected, the following warnings are required for your safety and proper Underwriters Laboratories (UL) certification. CAUTION: Never remove the cover on a power supply or any part that has the following label attached. ThinkCentre M73z Hardware Maintenance Manual...
  • Page 101 Hazardous voltage, current, and energy levels are present inside any component that has this label attached. There are no serviceable parts inside these components. If you suspect a problem with one of these parts, contact a service technician. To replace the power supply assembly, do the following: 1.

  • Page 102: Replacing The Microprocessor Fan

    8. Note the routing of the microprocessor-fan cable, and then disconnect the cable from the system board. 9. Remove the two screws , and then lift the microprocessor fan to remove it from the chassis. Figure 33. Removing the microprocessor fan ThinkCentre M73z Hardware Maintenance Manual...

  • Page 103: Replacing The Integrated Camera

    10. To install the new microprocessor fan, position the new microprocessor fan in the chassis so that the two screw holes in the new microprocessor fan align with the corresponding holes in the chassis. Then, install the two screws to secure the microprocessor fan to the chassis. 11.
  • Page 104 , and then disconnect the integrated-camera cable from the camera. Then, remove the camera from the chassis. Figure 34. Removing the integrated camera 6. To install the new integrated camera, connect the integrated-camera cable to the new integrated camera. ThinkCentre M73z Hardware Maintenance Manual...

  • Page 105: Replacing The Heat Sink Assembly

    7. Position the integrated camera so that the camera is secured by the tab and the screw hole in the camera aligns with the corresponding hole . Install the screw to secure the integrated camera to the front bezel. Figure 35. Installing the integrated camera What to do next: •...
  • Page 106 8. Follow the sequence to tighten the four screws to secure the heat sink assembly to the system board. Then, install the screw to secure the heat sink assembly to the chassis. ThinkCentre M73z Hardware Maintenance Manual...

  • Page 107: Replacing The Microprocessor

    Figure 37. Installing the heat sink assembly 9. Install the system board shield. See “Removing and installing the system board shield” on page 88. What to do next: • To work with another piece of hardware, go to the appropriate section. •...
  • Page 108 6. Remove the heat sink assembly. See “Replacing the heat sink assembly” on page 99. 7. Press the small handle to open the retainer to access the microprocessor Figure 38. Opening the retainer to access the microprocessor ThinkCentre M73z Hardware Maintenance Manual...
  • Page 109 8. Lift the microprocessor straight up and out of the socket. Notes: a. Your microprocessor and socket might look different from the one illustrated. b. Note the orientation of the microprocessor in the socket. You can either look for the small triangle on one corner of the microprocessor or note the orientation of the notches on the microprocessor.

  • Page 110: Installing Or Replacing A Memory Module

    2. Place a soft, clean towel or cloth on the desk or other flat surface. Hold the sides of your computer and gently lay it down so that the screen is against the surface and the cover is facing up. ThinkCentre M73z Hardware Maintenance Manual...
  • Page 111 3. Remove the computer stand. See “Removing and installing the computer stand” on page 73. 4. Remove the computer cover. See “Removing the computer cover” on page 76. 5. Remove the system board shield. See “Removing and installing the system board shield” on page 88. 6.

  • Page 112: Replacing The Battery

    4. Remove the computer cover. See “Removing the computer cover” on page 76. 5. Remove the system board shield. See “Removing and installing the system board shield” on page 88. 6. Remove the battery as shown. Figure 44. Removing the battery ThinkCentre M73z Hardware Maintenance Manual...

  • Page 113: Replacing The Card Reader

    7. Install a new battery as shown. Figure 45. Installing the battery 8. Install the system board shield. See “Removing and installing the system board shield” on page 88. 9. Install the computer cover. See “Completing the parts replacement” on page 118. 10.

  • Page 114: Replacing The Wi-Fi Card

    3. Remove the computer stand. See “Removing and installing the computer stand” on page 73. 4. Remove the computer cover. See “Removing the computer cover” on page 76. 5. Remove the system board shield. See “Removing and installing the system board shield” on page 88. ThinkCentre M73z Hardware Maintenance Manual...
  • Page 115 6. Disconnect the two Wi-Fi antenna cables from the Wi-Fi card, and then remove the screw that secures the Wi-Fi card so that the Wi-Fi card pops up. Figure 47. Disconnecting cables and releasing the Wi-Fi card 7. Remove the Wi-Fi card from the mini PCI express card slot as shown. Figure 48.
  • Page 116 20 degrees. Ensure that the Wi-Fi card is inserted firmly. Then, pivot the Wi-Fi card downward so that the screw hole in the Wi-Fi card aligns with the mounting stud on the system board. Figure 49. Installing the Wi-Fi card ThinkCentre M73z Hardware Maintenance Manual...

  • Page 117: Replacing The System Board

    9. Install the screw to secure the Wi-Fi card to the system board, and then connect the two Wi-Fi antenna cables to the Wi-Fi card. Figure 50. Securing the Wi-Fi card and connecting cables 10. Install the system board shield. See “Removing and installing the system board shield” on page 88. What to do next: •...
  • Page 118 See “Locating parts on the system board” on page 71. 17. Install the Wi-Fi card. See “Replacing the Wi-Fi card” on page 108. 18. Install the card reader. See “Replacing the card reader” on page 107. ThinkCentre M73z Hardware Maintenance Manual...

  • Page 119: Replacing The Lcd Panel

    19. Install the memory modules. See “Installing or replacing a memory module” on page 104. 20. Install the heat sink assembly. See “Replacing the heat sink assembly” on page 99. 21. Install the VESA mount bracket. See “Removing and installing the VESA mount bracket” on page 93. 22.
  • Page 120 15. Disconnect the LCD-panel cable from the system board. Figure 53. Disconnecting the LCD panel cable from the system board 16. Note the cable routing and disconnect other cables that might prevent your operation. Then, disconnect the cables from the system board. ThinkCentre M73z Hardware Maintenance Manual...
  • Page 121 17. Remove the eight screws that secure the chassis with the LCD panel. Figure 54. Removing the eight screws that secure the chassis with the LCD panel Chapter 8 Replacing FRUs...
  • Page 122 20. Lift the chassis a little bit upward to access the LCD-panel cable and the converter-board cable. Note the cable routing and disconnect the converter-board cable from the LCD panel. Then, remove the LCD panel from the chassis. ThinkCentre M73z Hardware Maintenance Manual...
  • Page 123 21. To install the new LCD panel, position the chassis over the new LCD panel and correctly route the new LCD-panel cable and the converter-board cable. Then, connect the converter-board cable to the new LCD panel. 22. Align the four screw holes in the LCD panel with the corresponding holes in the chassis, and then install the four screws to secure the LCD panel to the chassis.

  • Page 124: Completing The Parts Replacement

    Setup Utility program. Refer to Chapter 5 “Using the Setup Utility program” on page 53. Note: In most areas of the world, Lenovo requires the return of the defective Customer Replaceable Unit (CRU). Information about this will come with the CRU or will come a few days after the CRU arrives.

  • Page 125: Chapter 9. Additional Service Information

    – Start the Setup Utility. – Select Standard CMOS Features. • Sources for obtaining the latest level BIOS available 1. Lenovo support web site: http://www.lenovo.com/support/ 2. Lenovo Customer Support Center 3. Levels 1 and 2 Support To update (flash) the BIOS, see “Flash update procedures” on page 119.

  • Page 126: Updating (Flashing) The Bios From A Disc

    Note: You can download a self-starting bootable disc image (known as an ISO image) with the system program updates to create a system-program-update disc. Go to http://www.lenovo.com/support. To update (flash) the BIOS from a disc on the Windows 8 (64-bit) or Windows 8.1 (64-bit) operating system, do the following: 1.

  • Page 127: Updating (Flashing) The Bios From Your Operating System

    Updating (flashing) the BIOS from your operating system Note: Because Lenovo makes constant improvements to its Web sites, the Web page contents are subject to change without notice, including the contents referenced in the following procedure. To update (flash) the BIOS from your operating system, do the following: 1.

  • Page 128: Power Management

    • For Windows 8.1: Click Choose what the power button does. 4. In the Shutdown setting section, clear Turn on fast startup. Note: If the settings are unavailable, click Change settings that are currently unavailable. 5. Click Save changes. ThinkCentre M73z Hardware Maintenance Manual...

  • Page 129: Appendix A. Notices

    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 130: Television Output Notice

    Macrovision Corporation. Reverse engineering or disassembly is prohibited. European conformance CE mark Trademarks The following terms are trademarks of Lenovo in the United States, other countries, or both: Lenovo The Lenovo logo Rescue and Recovery...

  • Page 131: Index

    CRUs (Customer Replaceable Units), returning defective LCD panel replacing deleting a password Lenovo Solution Center Description 66–67 locating components diagnostic program looking up part numbers iii, 65, 71 diagnostics, troubleshooting © Copyright Lenovo 2013, 2014...
  • Page 132 POST/BIOS update failure recovery boot-block removing computer cover television output notice computer stand temporary startup device hard-disk-drive EMI shield the BIOS, updating (flashing) 120–121 system board shield trademarks U-shaped stand troubleshooting, basic ThinkCentre M73z Hardware Maintenance Manual...
  • Page 133 U-shaped stand installing removing updating (flashing) the BIOS updating (flashing) the BIOS USB 2.0 connector USB 3.0 connector using passwords Setup Utility VESA mount bracket installing removing VGA-out connector viewing and changing settings Wi-Fi card replacing © Copyright Lenovo 2013, 2014...
  • Page 134 ThinkCentre M73z Hardware Maintenance Manual...

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