Lenovo thinkcentre e73 Hardware Maintenance Manual
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Lenovo thinkcentre e73 Hardware Maintenance Manual

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See also: Hardware Maintenance Manual , User Manual
ThinkCentre E73
Hardware Maintenance Manual
Machine Types: 10AS, 10AU, 10AV, 10AW, 10BF, 10BG, 10DR,
10DS, 10DT, and 10DU

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Summary of Contents for Lenovo thinkcentre e73

  • Page 1 ThinkCentre E73 Hardware Maintenance Manual Machine Types: 10AS, 10AU, 10AV, 10AW, 10BF, 10BG, 10DR, 10DS, 10DT, and 10DU...
  • Page 2 “Safety information” on page 3 and Appendix A “Notices” on page 177. Fifth Edition (July 2015) © Copyright Lenovo 2013, 2015. LIMITED AND RESTRICTED RIGHTS NOTICE: If data or software is delivered pursuant a General Services Administration “GSA” contract, use, reproduction, or disclosure is subject to restrictions set forth in Contract No. GS-35F-05925.

  • Page 3: Table Of Contents

    ....Lenovo Support Web site ..Enabling ErP LPS compliance mode ..
  • Page 4 Index....Removing and reinstalling the front bezel . . Accessing the system board components and drives ....ThinkCentre E73 Hardware Maintenance Manual...

  • Page 5: Chapter 1. About This Manual

    This manual is intended only for trained service personnel who are familiar with Lenovo computer products. Before servicing a Lenovo computer product, be sure to read Chapter 2 “Safety information” on page 3. Chapter 7 “Symptom-to-FRU index” on page 61 and Chapter 11 “Additional service information” on page 173 are not specific to any machine type.
  • Page 6 ThinkCentre E73 Hardware Maintenance Manual...

  • Page 7: Chapter 2. Safety Information

    Observe the following rules when working on electrical equipment. © Copyright Lenovo 2013, 2015...
  • Page 8 (This practice ensures correct grounding of the units.) • If an electrical accident occurs: – Use caution; do not become a victim yourself. – Switch off power. – Send another person to get medical aid. ThinkCentre E73 Hardware Maintenance Manual...

  • Page 9: Voltage-Selection Switch

    Voltage-selection switch Some computers are equipped with a voltage-selection switch located near the power-cord connection point on the computer. If your computer has a voltage-selection switch, ensure that you set the switch to match the voltage available at your electrical outlet. Setting the voltage-selection switch incorrectly can cause permanent damage to the computer.

  • Page 10: Handling Electrostatic Discharge-Sensitive Devices

    Safety notices (multi-lingual translations) The caution and danger safety notices in this section are provided in the following languages: • English • Arabic • Brazilian/Portuguese • Chinese (simplified) • Chinese (traditional) ThinkCentre E73 Hardware Maintenance Manual...
  • Page 11 • French • German • Hebrew • 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 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 E73 Hardware Maintenance Manual...
  • Page 13 Chapter 2 Safety information...
  • Page 14 ≥18 kg (37 lbs) ≥32 kg (70.5 lbs) ≥55 kg (121.2 lbs) PERIGO A corrente elétrica proveniente de cabos de alimentação, de telefone e de comunicações é perigosa. ThinkCentre E73 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 E73 Hardware Maintenance Manual...
  • Page 17 Chapter 2 Safety information...
  • Page 18 ThinkCentre E73 Hardware Maintenance Manual...
  • Page 19 Chapter 2 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 E73 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 E73 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 E73 Hardware Maintenance Manual...
  • Page 25 Chapter 2 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 E73 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 E73 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 E73 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 E73 Hardware Maintenance Manual...

  • Page 33: Chapter 3. General Information

    • Input voltage: – Low range: Minimum: 100 V ac Maximum: 127 V ac Input frequency range: 50/60 Hz – High range: Minimum: 200 V ac Maximum: 240 V ac Input frequency range: 50/60 Hz © Copyright Lenovo 2013, 2015...

  • Page 34: For Machine Types: 10Au, 10Aw, 10Bf, 10Bg, 10Du, And 10Dt

    Accessing a program on your computer Note: For Windows 7, some of the Lenovo programs might be ready to be installed, so you need to install them manually. Then, you can access and use these programs. To install a program that is ready to be ®...

  • Page 35: An Introduction To Lenovo Programs

    The Lenovo PowerENGAGE program enables you to register your computer with Lenovo. – Message Center Plus The Message Center Plus program automatically displays messages informing you about important notices from Lenovo, such as alerts on system updates and alerts on conditions that require your attention. Chapter 3...
  • Page 36 BIOS updates. The program gathers information from the Lenovo Help Center about new updates for your computer, then sorts and displays the updates for download and installation. You have complete control of which updates to download and install.

  • Page 37: Lenovo Support Web Site

    The SHAREit or Lenovo SHAREit program provides a quick and easy way to share files and folders among computers, smartphones, tablets, or smart TVs with the Android or the Windows operating system installed. SHAREit or Lenovo SHAREit uses any type of network or even no network at all to share files and folders.
  • Page 38 ThinkCentre E73 Hardware Maintenance Manual...

  • Page 39: Chapter 4. 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, 2015...
  • Page 40 7. Have the same configuration options set in the system 8. Have the same setup for operating-system-controlled files Comparing the configuration and software set-up between “working and non-working” systems will often lead to problem resolution. ThinkCentre E73 Hardware Maintenance Manual...

  • Page 41: Chapter 5. Troubleshooting And Diagnostics

    Chapter 5. Troubleshooting and diagnostics This chapter describes some basic troubleshooting and diagnostic programs. If your computer problem is not described here, see “Lenovo Support Web site” on page 33 for additional troubleshooting resources. Basic troubleshooting The following table provides information to help you troubleshoot your computer problems.

  • Page 42: Accessing Control Panel On The Windows 8 Or Windows 8.1 Operating System

    To restore a captured configuration, do the following: a. Open Control Panel by doing one of the following: • For Windows 7: Click the Start button to open the Start menu, and then click Control Panel. ThinkCentre E73 Hardware Maintenance Manual...

  • Page 43: Troubleshooting

    • If the diagnostic program detects a hardware failure, contact the Lenovo Customer Support Center. See “Lenovo Support Web site” on page 33 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 33 for more information.

  • Page 44: Audio Problems

    • 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 diagnostic programs (see “Lenovo Solution Center” on page 53 for instructions). If you need technical assistance, see “Lenovo Support Web site” on page 33.

  • Page 45: 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 diagnostic programs (see “Lenovo Solution Center” on page 53 for instructions). If you need technical assistance, see “Lenovo Support Web site” on page 33.
  • Page 46 • Try a lower screen resolution or color depth. If these actions do not correct the problem, run the diagnostic programs (see “Lenovo Solution Center” on page 53 for instructions). If you need technical assistance, see “Lenovo Support Web site” on page 33.

  • Page 47: Intermittent Problems

    (one to five hard disk drives) or the LSI MegaRAID SAS adapter is installed. If these actions do not correct the problem, run the diagnostic program Lenovo Solution Center. See “Lenovo Solution Center” on page 53. If you need technical assistance, see “Lenovo Support Web site” on page 33. Chapter 5...

  • Page 48: 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 53. If you need technical assistance, see “Lenovo Support Web site” on page 33. Keyboard, mouse, or pointing device problems Select your symptom from the following list: •...

  • Page 49: Monitor Problems

    If these actions do not correct the problem, run the diagnostic programs (see “Lenovo Solution Center” on page 53 for instructions). If you need technical assistance, see “Lenovo Support Web site” on page 33.

  • Page 50: Networking Problems

    If these actions do not correct the problem, run the diagnostic programs (see “Lenovo Solution Center” on page 53 for instructions). If you need technical assistance, see “Lenovo Support Web site” on page 33.

  • Page 51: Ethernet Problems

    • “Bluetooth problem” on page 48 Ethernet problems For Ethernet problems, select your symptom from the following list: • “Your computer cannot connect to the network” on page 47 • “The adapter stops working for no apparent reason” on page 47 •...

  • 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

    If these actions do not correct the problem, run the diagnostic programs (see “Lenovo Solution Center” on page 53 for instructions). If you need technical assistance, see “Lenovo Support Web site” on page 33.
  • Page 54 • For Windows 7: Click Defragment now. • For Windows 8, Windows 8.1, or Windows 10: Click Optimize. Select the desired drive, and then click Optimize. 6. Follow the instructions on the screen. Insufficient memory Symptom: Insufficient memory ThinkCentre E73 Hardware Maintenance Manual...

  • Page 55: Printer Problems

    33. For step-by-step instructions on installing memory, see “Installing or replacing a memory module” on page 87. If these actions do not correct the problem, run the diagnostic programs (see “Lenovo Solution Center” on page 53 for instructions). If you need technical assistance, see “Lenovo Support Web site” on page 33.
  • Page 56 • If you are unable to resolve the problem through other methods, uninstall the software program and reinstall it. If these actions do not correct the problem, you might need technical assistance. Contact your software manufacturer or see “Lenovo Support Web site” on page 33 for details. ThinkCentre E73 Hardware Maintenance Manual...

  • Page 57: Usb Problems

    For additional information, refer to the Lenovo Solution Center help system. 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. Chapter 5...

  • Page 58: Uefi Diagnostic Program

    • Memory - Quick test • Recover bad sectors tool • Memory - Extended test • Generate configuration file • Motherboard test • Execute from configuration file • PCI-e test • Exit application • Storage - Quick test ThinkCentre E73 Hardware Maintenance Manual...

  • Page 59: Chapter 6. Using The Setup Utility Program

    • Administrator Password • Hard Disk Password You do not have to set any passwords to use your computer. However, using passwords improves computing security. If you decide to set any passwords, read the following sections. © Copyright Lenovo 2013, 2015...

  • Page 60: Password Considerations

    3. Depending on the password type, select Set Power-On Password, Set Administrator Password, or Hard Disk Password. 4. Follow the instructions on the right side of the screen to set, change, or delete a password. ThinkCentre E73 Hardware Maintenance Manual...

  • Page 61: Erasing Lost Or Forgotten Passwords (Clearing Cmos)

    Note: A password can be any combination of up to 64 alphabetic and numeric characters. For more information, see “Password considerations” on page 56. Erasing lost or forgotten passwords (clearing CMOS) This section provides instructions on how to erase lost or forgotten passwords, such as a user password. To erase a lost or forgotten password, do the following: 1.

  • Page 62: Selecting A Startup Device

    4. Press F10 to save and exit the Setup Utility program. See “Exiting the Setup Utility program” on page 59. 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

    • Pressing the power switch • Enabling the wake up on alarm feature The wake up on alarm feature enables your computer to wake up at a set time. To enable the wake up on alarm feature, do the following: 1.
  • Page 64 ThinkCentre E73 Hardware Maintenance Manual...

  • Page 65: Chapter 7. 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, 2015...

  • Page 66: Post Error Codes

    0164 Memory size decreased This error message is displayed when the memory size has decreased. Press F1 to enter the Setup Utility program. Then press F10 to save and exit the Setup Utility program. ThinkCentre E73 Hardware Maintenance Manual...
  • Page 67 POST Error code POST Error message Description/Action 1762 This error message is displayed when a hard disk Configuration change has occurred drive or optical drive change has been made. Press F1 to enter the Setup Utility program. Then press F10 to save and exit the Setup Utility program.

  • Page 68: Miscellaneous Error Messages

    Intensity or color varies from left to right of characters 1. Display and color bars 2. Video adapter (if present) 3. System Board No power or fan not running 1. See “Hard disk drive boot error” on page 61. ThinkCentre E73 Hardware Maintenance Manual...

  • Page 69: 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 1. Display Other display symptoms not listed above (including blank or illegible display) 2. System Board Power-on indicator or hard disk drive in-use light not on, 1.
  • Page 70 4. Repeat steps 1 through 3 until you find the failing device or adapter cards. If all devices and adapter cards have been removed, and the problem continues, replace the system board. See “Replacing the system board” on page 108 or “Replacing the system board” on page 156. ThinkCentre E73 Hardware Maintenance Manual...

  • Page 71: Chapter 8. Locations

    Figure 1. Front connector, control, and indicator locations Hard disk drive activity indicator Power indicator Power button Optical drive eject/close button USB connector Headphone connector Microphone connector USB connector © Copyright Lenovo 2013, 2015...

  • Page 72: Locating Connectors On The Rear Of Your Computer

    DisplayPort connector. Ethernet connector Used to attach an Ethernet cable for a local area network (LAN). Note: To operate the computer within FCC Class B limits, use a Category 5e or better Ethernet cable. ThinkCentre E73 Hardware Maintenance Manual...

  • Page 73: Locating Major Frus And Crus

    Connector Description Microphone connector Used to attach a microphone to your computer when you want to record sound or if you use speech-recognition software. USB 2.0 connector Used to attach a device that requires a USB 2.0 connection, such as a keyboard, a mouse, a scanner, a printer, or a personal digital assistant (PDA).
  • Page 74 Figure 3. Component locations The following table lists the major FRUs shown in Figure 3 “Component locations” on page 70 and identifies which FRUs also are self-service CRUs or optional-service CRUs. ThinkCentre E73 Hardware Maintenance Manual...

  • Page 75: Looking Up Fru Information

    PCI Express card (installed on some models) (available on some models) Rear fan assembly Keyboard Mouse 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 Chapter 8 Locations...

  • Page 76: Locating Parts On The System Board

    1 and 2 on the front bezel) device) Clear CMOS (Complementary Metal Oxide Serial (COM2) connector Semiconductor) /Recovery jumper Front audio connector Internal speaker connector PCI Express x1 card slots (2) PCI Express x16 graphics card slot System fan connector Battery ThinkCentre E73 Hardware Maintenance Manual...

  • Page 77: Locating Internal Drives

    Locating internal drives Internal drives are devices that your computer uses to read and store data. You can add drives to your computer to increase storage capacity and enable your computer to read other types of media. Internal drives are installed in bays. In this manual, the bays are referred to as bay 1, bay 2, and so on. When installing or replacing an internal drive, it is important to note the type and size of the drive that you can install or replace in each bay and correctly connect the cables to the drive installed.

  • Page 78: Locating Connectors, Controls, And Indicators On The Front Of Your Computer

    Figure 6. Front connector, control, and indicator locations Optical drive eject/close button Power button Hard disk drive activity indicator Power indicator USB 2.0 connector Microphone connector Headphone connector USB 2.0 connector ThinkCentre E73 Hardware Maintenance Manual...

  • Page 79: Locating Connectors On The Rear Of Your Computer

    Locating connectors on the rear of your computer Figure 7 “Rear connector locations” on page 75 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 80: Locating Major Frus And Crus

    Locating major FRUs and CRUs Figure 8 “Component locations” on page 77 shows the locations of the various components in your computer. To remove the computer cover, see “Removing the computer cover” on page 124. ThinkCentre E73 Hardware Maintenance Manual...
  • Page 81 Figure 8. Component locations The following table lists the major FRUs shown in Figure 8 “Component locations” on page 77 and identifies which FRUs also are self-service CRUs or optional-service CRUs. Chapter 8 Locations...

  • Page 82: Looking Up Fru Information

    Peripheral Component Interconnect (PCI) Express card (available on some models) Heat sink and fan assembly Keyboard Mouse 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 ThinkCentre E73 Hardware Maintenance Manual...

  • Page 83: Locating Parts On The System Board

    Locating parts on the system board Figure 9 “System board part locations” on page 79 shows the locations of the parts on the system board. Figure 9. System board part locations 4-pin power connector Microprocessor Microprocessor fan connector Memory slot 1 (DIMM1) Memory slot 2 (DIMM2) Thermal sensor connector Power fan connector...

  • Page 84: Locating Internal Drives

    Bay 2 - Optical drive bay (with an optical drive installed on some models) Bay 3 - Slim card reader drive bay (with a slim card reader installed on some models) Bay 4 - Hard disk drive bay (with a 2.5-inch or 3.5-inch SATA hard disk drive installed) ThinkCentre E73 Hardware Maintenance Manual...

  • Page 85: Chapter 9. Replacing Frus (Machine Types: 10As And 10Au)

    Attention: Do not open your computer or attempt any repair before reading and understanding “Important safety information” on page 1. Notes: 1. Use only computer parts provided by Lenovo. 2. When installing or replacing an option, use the appropriate instructions in this section along with the instructions that come with the option.

  • Page 86: Removing The Computer Cover

    4. Remove any locking device that secures the computer cover, such as a padlock or a Kensington-style cable lock. 5. Remove the two screws that secure the computer cover and slide the computer cover to the rear to remove it. Figure 11. Removing the computer cover ThinkCentre E73 Hardware Maintenance Manual...

  • Page 87: Removing And Reinstalling The Front Bezel

    Removing and reinstalling the front bezel Attention: Do not open your computer or attempt any repair before reading and understanding “Important safety information” on page 1. This section provides instructions on how to remove and reinstall the front bezel. To remove and reinstall the front bezel, do the following: 1.

  • Page 88: Installing Or Replacing A Pci Express Card

    To install or replace a PCI Express card, do the following: 1. Turn off the computer and disconnect all power cords from electrical outlets. 2. Remove the computer cover. See “Removing the computer cover” on page 82. ThinkCentre E73 Hardware Maintenance Manual...
  • Page 89 3. At the rear of the computer, remove the screw that secures the PCI Express card latch. Figure 14. Removing the screw that secures the PCI Express card latch 4. Depending on whether you are installing or replacing a PCI Express card, do one of the following: •...
  • Page 90 6. Install the new PCI Express card into the appropriate slot on the system board. See “Locating parts on the system board” on page 72. Note: If you are installing a PCI Express x16 graphics card, ensure that the memory slot retaining clips are closed before you install the graphics card. ThinkCentre E73 Hardware Maintenance Manual...

  • Page 91: Installing Or Replacing A Memory Module

    7. Pivot the card latch to the closed position to secure the PCI Express card. Figure 16. Installing a PCI Express card 8. Reinstall the screw to secure the PCI Express card latch in place. What to do next: • To work with another piece of hardware, go to the appropriate section. •...
  • Page 92 Figure 17. Removing a memory module • If you are installing a memory module, open the retaining clips of the memory slot into which you want to install the memory module. Figure 18. Opening the retaining clips ThinkCentre E73 Hardware Maintenance Manual...

  • Page 93: Replacing The Rear Fan Assembly

    7. Position the new memory module over the memory slot. Make sure that the notch on the memory module aligns correctly with the slot key on the system board. Push the memory module straight down into the slot until the retaining clips close. Figure 19.
  • Page 94 Figure 20. Removing the rear fan assembly 6. Install the new rear fan assembly by aligning the new rubber mounts with the corresponding holes in the chassis and push the rubber mounts through the holes. ThinkCentre E73 Hardware Maintenance Manual...

  • Page 95: Replacing The Battery

    7. Pull on the tips of the rubber mounts until the rear fan assembly is secured in place. Figure 21. Installing the rear fan assembly 8. Connect the rear fan assembly cable to the system fan connector on the system board. What to do next: •...

  • Page 96: Replacing The Primary Hard Disk Drive

    Note: There is also a secondary hard disk drive bay for you to purchase and install a secondary hard disk drive by yourself. If you want to install a secondary hard disk drive, use the same way of installing the primary hard disk drive. ThinkCentre E73 Hardware Maintenance Manual...
  • Page 97 4. Disconnect the signal cable and the power cable from the hard disk drive. 5. Remove the four screws that secure the hard disk drive. Then, slide the hard disk drive out of the chassis. Figure 24. Removing the primary hard disk drive Chapter 9 Replacing FRUs (machine types: 10AS and 10AU)

  • Page 98: Installing The Solid-State Drive

    • To complete the installation or replacement, go to “Completing the parts replacement” on page 121. Installing the solid-state drive Attention: Do not open your computer or attempt any repair before reading and understanding the “Important safety information” on page 1. ThinkCentre E73 Hardware Maintenance Manual...

  • Page 99: Replacing The Optical Drive

    This section provides instructions on how to install the 2.5-inch solid-state drive. To install the solid-state drive, do the following: 1. Install the solid-state drive into the storage converter. Then, install the four screws to secure the solid-state drive to the storage converter. Figure 27.
  • Page 100 5. Slide the new optical drive into the drive bay from the front and align the screw holes in the new optical drive with the corresponding holes in the drive bay. Then, install the three screws to secure the new optical drive in place. Figure 29. Installing the optical drive ThinkCentre E73 Hardware Maintenance Manual...

  • Page 101: Replacing The Slim Card Reader

    6. Connect one end of the signal cable to the rear of the new optical drive and the other end to an available SATA connector on the system board. See “Locating parts on the system board” on page 72. Then, locate an available five-wire power connector and connect it to the rear of the new optical drive.
  • Page 102 8. Align the new card reader in the slim card reader bracket and slide the card reader into the rail as shown until it stops. Then, install the two screws to secure the new card reader to the bracket. ThinkCentre E73 Hardware Maintenance Manual...
  • Page 103 Figure 33. Installing the new slim card reader into the bracket 9. Route the cable of the new card reader through the corresponding hole for the card reader bracket in the front of the chassis. 10. Install the bracket into the chassis so that the hole in the bracket is aligned with the corresponding hole in the chassis.

  • Page 104: Replacing The Power Supply Assembly

    2. Remove the computer cover. See “Removing the computer cover” on page 82. 3. Disconnect the power supply assembly cables from all drives and from the 24-pin power connector and 4-pin power connector on the system board. See “Locating parts on the system board” on page 72. ThinkCentre E73 Hardware Maintenance Manual...

  • Page 105: Replacing The Heat Sink And Fan Assembly

    8. Install and tighten the four screws to secure the power supply assembly. Note: Use only screws provided by Lenovo. 9. Reconnect the power supply assembly cables to the system board and each of the drives.
  • Page 106 You might have to gently twist the heat sink and fan assembly to free it from the microprocessor. b. When handling the heat sink and fan assembly, do not touch the thermal grease on the bottom of the heat sink and fan assembly. ThinkCentre E73 Hardware Maintenance Manual...

  • Page 107: Replacing The Thermal Sensor

    8. Place the new heat sink and fan assembly on the system board so that the four screws are aligned with the corresponding holes in the system board. Note: Position the new heat sink and fan assembly so that the heat sink and fan assembly cable is toward the microprocessor fan connector on the system board.
  • Page 108 Then disengage the plastic holder holding the thermal sensor from the chassis. Figure 37. Removing the thermal sensor 7. Pull the entire thermal sensor out of the chassis. ThinkCentre E73 Hardware Maintenance Manual...

  • Page 109: Replacing The Microprocessor

    8. Insert the connector and cable of the new thermal sensor into the hole in the chassis. Then align the two tabs on the plastic holder holding the thermal sensor with the two holes in the chassis, and push the plastic holder until it snaps into position. Figure 38.
  • Page 110 5. Lift the small handle and open the retainer to access the microprocessor Figure 39. Accessing the microprocessor 6. Lift the microprocessor straight up and out of the microprocessor socket. Figure 40. Removing the microprocessor Notes: ThinkCentre E73 Hardware Maintenance Manual...
  • Page 111 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 112: Replacing The System Board

    Note: Do not let the thermal grease on the bottom of the heat sink and fan assembly get in contact with anything. 6. Record the cable routing and cable connections and then disconnect all cables from the system board. See “Locating parts on the system board” on page 72. ThinkCentre E73 Hardware Maintenance Manual...
  • Page 113 7. Remove the eight screws that secure the system board. Figure 42. Removing the screws that secure the system board 8. Slide the system board to the front of the computer and then carefully lift the system board out of the chassis.

  • Page 114: Replacing The Front Audio And Usb Assembly

    5. Disconnect the front audio and USB assembly cables from the system board. See “Locating parts on the system board” on page 72. Note: Ensure that you note the locations of the cables when you disconnect the cables from the system board. ThinkCentre E73 Hardware Maintenance Manual...

  • Page 115: Replacing The Wi-Fi Units

    6. Remove the screw that secures the front audio and USB assembly bracket to the chassis to remove the bracket from the chassis. Figure 44. Removing the front audio and USB assembly 7. Install the new front audio and USB assembly into the chassis and align the screw hole in the bracket with the corresponding hole in the chassis.
  • Page 116 Note: The Bluetooth cable connects the Bluetooth connector on the Wi-Fi adapter card to the front USB connector on the system board to support the Bluetooth function. 4. At the rear of the computer, remove the screw that secures the PCI card latch. ThinkCentre E73 Hardware Maintenance Manual...
  • Page 117 5. Grasp the Wi-Fi adapter card that is currently installed and gently pull it out of the slot. Figure 46. Removing the Wi-Fi adapter card Note: The card fits tightly into the card slot. If necessary, alternate moving each side of the card a small amount until it is removed from the card slot.
  • Page 118 3. Pull the Wi-Fi card module out of the mini PCI Express slot to remove it from the Wi-Fi adapter card. Figure 49. Removing the Wi-Fi card module Installing the Wi-Fi units To install the Wi-Fi units, do the following: ThinkCentre E73 Hardware Maintenance Manual...
  • Page 119 1. Insert the Wi-Fi card module into the mini PCI Express slot, and then install the two screws to secure the Wi-Fi card module to the Wi-Fi adapter card. Figure 50. Installing the Wi-Fi card module Chapter 9 Replacing FRUs (machine types: 10AS and 10AU)
  • Page 120 5. Pivot the card latch to the closed position to secure the Wi-Fi adapter card. Figure 52. Installing the WiFi adapter card What to do next: • To work with another piece of hardware, go to the appropriate section. ThinkCentre E73 Hardware Maintenance Manual...

  • Page 121: Installing Or Removing The Rear Wi-Fi Antenna

    • To complete the installation or replacement, go to “Completing the parts replacement” on page 121. Installing or removing the rear Wi-Fi antenna Attention: Do not open your computer or attempt any repair before reading and understanding the “Important safety information” on page 1. This section provides instructions on how to install or remove the rear Wi-Fi antenna.

  • Page 122: Installing Or Removing The Front Wi-Fi Antenna

    2. Remove the computer cover. See “Removing the computer cover” on page 82. 3. Remove the front bezel. See “Removing and reinstalling the front bezel” on page 83. 4. Peel off the paper that protects the stickers on the front antenna. ThinkCentre E73 Hardware Maintenance Manual...
  • Page 123 Figure 55. Peeling off the paper that protects the stickers 5. Stick the front antenna to the front panel as shown. Then insert the front antenna cable through the hole in the front panel. Figure 56. Installing the front Wi-Fi antenna 6.

  • Page 124: Replacing The Keyboard Or Mouse

    1. This section provides instructions on how to replace the keyboard or mouse. To replace the keyboard or mouse, do the following: 1. Disconnect the old keyboard cable or mouse cable from the computer. ThinkCentre E73 Hardware Maintenance Manual...

  • Page 125: Completing The Parts Replacement

    2. Connect a new keyboard or mouse to one of the USB connectors on the computer. Depending on where you want to connect the new keyboard or mouse, see “Locating connectors, controls, and indicators on the front of your computer” on page 67 or “Locating connectors on the rear of your computer”...

  • Page 126: Obtaining Device Drivers

    8. To update your configuration, refer to Chapter 6 “Using the Setup Utility program” on page 55. Note: In most areas of the world, Lenovo requires the return of the defective Field Replaceable Units (FRUs). Information about this will come with the new FRUs or will come a few days after you receive the new FRUs.

  • Page 127: Chapter 10. Replacing Frus (Machine Types: 10Au, 10Aw, 10Bf, And 10Bg)

    Attention: Do not open your computer or attempt any repair before reading and understanding “Important safety information” on page 1. Notes: 1. Use only computer parts provided by Lenovo. 2. When installing or replacing an option, use the appropriate instructions in this section along with the instructions that come with the option.

  • Page 128: Removing The Computer Cover

    Removing and reinstalling the front bezel Attention: Do not open your computer or attempt any repair before reading and understanding “Important safety information” on page 1. This section provides instructions on how to remove and reinstall the front bezel. ThinkCentre E73 Hardware Maintenance Manual...
  • Page 129 To remove and reinstall the front bezel, do the following: 1. Turn off the computer and disconnect all power cords from electrical outlets. 2. Remove the computer cover. See “Removing the computer cover” on page 124. 3. Remove the front bezel by releasing the three plastic tabs on the top of the front bezel and pivoting the front bezel outward to remove it from the computer.

  • Page 130: Accessing The System Board Components And Drives

    3. Remove the front bezel. See “Removing and reinstalling the front bezel” on page 124. 4. Pivot the drive bay assembly upward to access all the internal drives, cables, and other components. Figure 63. Pivoting the drive bay assembly upward ThinkCentre E73 Hardware Maintenance Manual...

  • Page 131: Installing Or Replacing A Pci Express Card

    5. To lower the drive bay assembly, press the drive bay assembly clip inward and pivot the drive bay assembly downward as shown. Figure 64. Lowering the drive bay assembly Installing or replacing a PCI Express card Attention: Do not open your computer or attempt any repair before reading and understanding “Important safety information”...
  • Page 132 Note: If you are installing a PCI Express x16 graphics card, ensure that the memory slot retaining clips are closed before you install the graphics card. 6. Install the screw to secure the new PCI Express card in place. ThinkCentre E73 Hardware Maintenance Manual...

  • Page 133: Installing Or Replacing A Memory Module

    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 171. Installing or replacing a memory module Attention: Do not open your computer or attempt any repair before reading and understanding “Important safety information”...

  • Page 134: Replacing The Battery

    Your computer has a special type of memory that maintains the date, time, and settings for built-in features, such as parallel-port assignments (configuration). A battery keeps this information active when you turn off the computer. ThinkCentre E73 Hardware Maintenance Manual...

  • Page 135: Replacing The Hard Disk Drive

    The battery normally requires no charging or maintenance throughout its life; however, no battery lasts forever. If the battery fails, the date, time, and configuration information (including passwords) are lost. An error message is displayed when you turn on the computer. Refer to the “Lithium battery notice”...
  • Page 136 5. Hold the hard disk drive and remove the four screws that secure the hard disk drive. Then, remove the hard disk drive from the drive bay assembly. Figure 72. Removing the hard disk drive ThinkCentre E73 Hardware Maintenance Manual...

  • Page 137: Replacing The Optical Drive

    6. Disconnect the signal cable and the power cable from the hard disk drive to completely remove the hard disk drive from the chassis. 7. Connect one end of the signal cable to the rear of the new hard disk drive and the other end to an available SATA connector on the system board.
  • Page 138 126 5. Disconnect the signal cable and the power cable from the optical drive. 6. Hold the optical drive and remove the two screws that secure the optical drive. Figure 75. Removing the optical drive ThinkCentre E73 Hardware Maintenance Manual...
  • Page 139 7. Press the drive bay assembly clip inward and pivot the drive bay assembly downward as shown. Figure 76. Lowering the drive bay assembly 8. Slide the optical drive out of the front of the computer. Figure 77. Removing the optical drive Chapter 10 Replacing FRUs (machine types: 10AU, 10AW, 10BF, and 10BG)
  • Page 140 10. Hold the new optical drive and pivot the drive bay assembly upward. Align the screw holes in the new optical drive with the corresponding holes in the drive bay. Then, install the two screws to secure the new optical drive in place. Figure 79. Installing the optical drive ThinkCentre E73 Hardware Maintenance Manual...

  • Page 141: Replacing The Slim Card Reader

    11. Connect one end of the signal cable to the rear of the new optical drive and the other end to an available SATA connector on the system board. See “Locating parts on the system board” on page 79. Then, locate an available five-wire power connector and connect it to the rear of the new optical drive.
  • Page 142 8. Align the new card reader in the slim card reader bracket and slide the card reader into the rail as shown until it stops. Then, install the two screws to secure the new card reader to the bracket. ThinkCentre E73 Hardware Maintenance Manual...

  • Page 143: Replacing The Solid-State Drive

    Figure 83. Installing the new slim card reader into the bracket 9. Route the cable of the new card reader through the corresponding hole for the card reader bracket in the front of the chassis. 10. Install the bracket into the chassis so that the hole in the bracket is aligned with the corresponding hole in the chassis.
  • Page 144 1. Remove the four screws that secure the solid-state drive to the storage converter. Then, remove the drive from the converter as shown. Figure 85. Removing the solid-state drive from the storage converter 2. Take the new solid-state drive out of the static-protective package. ThinkCentre E73 Hardware Maintenance Manual...
  • Page 145 3. Position the solid-state drive into the storage converter so that the holes in the drive are aligned with the corresponding holes in the converter. Then, install the four screws to secure the solid-state drive to the converter. Figure 86. Installing the solid-state drive into the storage converter What to do next: •...
  • Page 146 7. Remove the four screws that secure the solid-state drive to the bracket. Then, slide the drive as shown to remove it from the bracket. Figure 88. Removing the solid-state drive from the bracket 8. Take the new solid-state drive out of the static-protective package. ThinkCentre E73 Hardware Maintenance Manual...
  • Page 147 9. Slide the new solid-state drive into the solid-state drive bracket as shown until the four holes in the drive are aligned with the corresponding holes in the bracket. Then, install the four screws to secure the new solid-state drive to the bracket. Figure 89.

  • Page 148: Replacing The Power Supply Assembly

    This section provides instructions on how to replace 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: ThinkCentre E73 Hardware Maintenance Manual...
  • Page 149 Hazardous moving parts. Keep fingers and other body parts away. CAUTION: 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.
  • Page 150 Lift the power supply assembly out of the computer. Figure 93. Removing the power supply assembly 7. Ensure that the new power supply assembly is the correct replacement. ThinkCentre E73 Hardware Maintenance Manual...
  • Page 151 Then, install the three screws to secure the new power supply assembly in place. Note: Use only screws provided by Lenovo. Figure 94. Installing the power supply assembly 9.

  • Page 152: Replacing The Heat Sink And Fan Assembly

    1. Turn off the computer and disconnect all power cords from electrical outlets. 2. Remove the computer cover. See “Removing the computer cover” on page 124. 3. Remove the front bezel. See “Removing and reinstalling the front bezel” on page 124. ThinkCentre E73 Hardware Maintenance Manual...
  • Page 153 4. Pivot the drive bay assembly upward. Then, pivot the two plastic retaining clips outward to remove the heat sink fan duct from the failing heat sink and fan assembly. Figure 96. Removing the heat sink fan duct 5. Disconnect the heat sink and fan assembly cable from the microprocessor fan connector on the system board.
  • Page 154 , and then fully tighten screw 10. Connect the new heat sink and fan assembly cable to the microprocessor fan connector on the system board. See “Locating parts on the system board” on page 79. ThinkCentre E73 Hardware Maintenance Manual...

  • Page 155: Replacing The Thermal Sensor

    11. Lower and position the heat sink fan duct on the top of the heat sink and fan assembly until it snaps into position. Figure 98. Installing the heat sink fan duct What to do next: • To work with another piece of hardware, go to the appropriate section. •...
  • Page 156 Then, disengage the plastic holder holding the thermal sensor from the chassis. Figure 99. Removing the thermal sensor 8. Pull the entire thermal sensor out of the chassis. ThinkCentre E73 Hardware Maintenance Manual...

  • Page 157: Replacing The Microprocessor

    9. Insert the connector and cable of the new thermal sensor into the hole in the chassis. Then, align the two tabs on the plastic holder holding the thermal sensor with the two holes in the chassis, and push the plastic holder until it snaps into position. Figure 100.
  • Page 158 Figure 101. Accessing the microprocessor 6. Lift the microprocessor straight up and out of the microprocessor socket. Figure 102. Removing the microprocessor Notes: a. Your microprocessor and socket might look different from the one illustrated. ThinkCentre E73 Hardware Maintenance Manual...
  • Page 159 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. This is important when installing the new microprocessor on the system board. c.

  • Page 160: Replacing The System Board

    Note: Do not let the thermal grease on the bottom of the heat sink and fan assembly get in contact with anything. 8. Record the cable routing and cable connections and then disconnect all cables from the system board. See “Locating parts on the system board” on page 79. ThinkCentre E73 Hardware Maintenance Manual...
  • Page 161 9. Remove the eight screws that secure the system board. Figure 104. Removing the screws that secure the system board 10. Slide the system board to the front of the computer and then carefully lift the system board out of the chassis.

  • Page 162: Replacing The System Fan Assembly

    8. The system fan assembly is attached to the chassis by four rubber mounts. Remove the system fan assembly by cutting the four rubber mounts and lifting the system fan assembly out of the chassis. Note: The new system fan assembly will have four new rubber mounts attached. ThinkCentre E73 Hardware Maintenance Manual...
  • Page 163 Figure 106. Removing the system fan assembly Chapter 10 Replacing FRUs (machine types: 10AU, 10AW, 10BF, and 10BG)

  • Page 164: Replacing The Front Audio And Usb Assembly

    1. Turn off the computer and disconnect all power cords from electrical outlets. 2. Remove the computer cover. See “Removing the computer cover” on page 124. 3. Remove the front bezel. See “Removing and reinstalling the front bezel” on page 124. ThinkCentre E73 Hardware Maintenance Manual...

  • Page 165: Replacing The Wi-Fi Units

    4. Pivot the drive bay assembly upward. See “Accessing the system board components and drives” on page 126. 5. Disconnect the front audio and USB assembly cables from the system board. See “Locating parts on the system board” on page 79. Note: Ensure you note the locations of the cables when you disconnect the cables from the system board.
  • Page 166 Note: The Bluetooth cable connects the Bluetooth connector on the Wi-Fi adapter card to the front USB connector on the system board to support the Bluetooth function. 4. Remove the screw that secures the Wi-Fi adapter card. ThinkCentre E73 Hardware Maintenance Manual...
  • Page 167 5. Grasp the Wi-Fi adapter card that is currently installed and gently pull it out of the slot. Figure 110. Removing the WiFi adapter card Note: The card fits tightly into the card slot. If necessary, alternate moving each side of the card a small amount until it is removed from the card slot.
  • Page 168 • 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 171. Installing the Wi-Fi units To install the Wi-Fi units, do the following: ThinkCentre E73 Hardware Maintenance Manual...
  • Page 169 1. Insert the Wi-Fi card module into the mini PCI Express slot, and then install the two screws to secure the Wi-Fi card module to the Wi-Fi adapter card. Figure 114. Installing the Wi-Fi card module 2. Connect the front antenna cable and rear antenna cable to the Wi-Fi card module. Figure 115.

  • Page 170: Installing Or Removing The Rear Wi-Fi Antenna

    To install the rear Wi-Fi antenna, do the following: 1. Turn off the computer and disconnect all power cords from electrical outlets. 2. Install the rear Wi-Fi antenna to the rear Wi-Fi antenna cable connector attached on the rear of the computer. ThinkCentre E73 Hardware Maintenance Manual...
  • Page 171 3. Adjust the angle of the rear antenna to lower the risk of breaking the antenna by accident. Figure 117. Installing the rear WiFi antenna What to do next: • To work with another piece of hardware, go to the appropriate section. •...

  • Page 172: Installing Or Removing The Front Wi-Fi Antenna

    3. Remove the front bezel. See “Removing and reinstalling the front bezel” on page 124. 4. Peel off the paper that protects the stickers on the front antenna. Figure 119. Peeling off the paper that protects the stickers ThinkCentre E73 Hardware Maintenance Manual...
  • Page 173 5. Stick the front antenna to the front panel as shown. Then insert the front antenna cable through the hole in the front panel. Figure 120. Installing the front WiFi antenna 6. Connect the front antenna cable to the WiFi card module. What to do next: •...

  • Page 174: Replacing The Keyboard Or Mouse

    “Locating connectors, controls, and indicators on the front of your computer” on page 74 or “Locating connectors on the rear of your computer” on page 75. Figure 122. Connecting the USB keyboard or mouse ThinkCentre E73 Hardware Maintenance Manual...

  • Page 175: Completing The Parts Replacement

    9. To update your configuration, refer to Chapter 6 “Using the Setup Utility program” on page 55. Note: In most areas of the world, Lenovo requires the return of the defective Field Replaceable Units (FRUs). Information about this will come with the new FRUs or will come a few days after you receive the new FRUs.
  • Page 176 Obtaining device drivers You can obtain device drivers for operating systems that are not preinstalled at http://www.lenovo.com/support. Installation instructions are provided in readme files with the device-driver files. ThinkCentre E73 Hardware Maintenance Manual...

  • Page 177: Chapter 11. Additional Service Information

    “Using passwords” on page 55. Operating system password Note: This section applies only to computer models that have an operating system preinstalled from Lenovo. An operating system password is very similar to a power-on password and denies access to the computer by an unauthorized user when the password is activated.

  • Page 178: Updating The Bios

    3. Print the installation instructions you download and follow the instructions to update the BIOS. 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.

  • Page 179: Power Management

    7. Reinstall the computer cover and reconnect the power cords for the computer and monitor. For machine types 1577, 1579, and 1607, see “Completing the parts replacement” on page 121. For machine types 1578, 1583, and 1652, see “Completing the parts replacement” on page 171. 8.
  • Page 180 ThinkCentre E73 Hardware Maintenance Manual...

  • Page 181: 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 182: 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 Rescue and Recovery The Lenovo logo...

  • Page 183: Index

    81, 123 diagnostics, troubleshooting DisplayPort connector 68, 75 Lenovo Solution Center drives locating components 69, 76 bays 73, 80 looking up part numbers 1, 67, 71, 78 specifications 73, 80 environment, operating 29–30 memory module © Copyright Lenovo 2013, 2015...
  • Page 184 69, 76 viewing and changing settings security enabling or disabling selecting startup device Wi-Fi units, Wi-Fi adapter card, Wi-Fi card module, Wi-Fi temporary startup device antenna cable, replacing 111, 161 Self-service CRUs 69, 76 setting password ThinkCentre E73 Hardware Maintenance Manual...

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