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Lenovo M4350 Hardware Maintenance Manual
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Lenovo M4350 Hardware Maintenance Manual

Lenovo M4350 Hardware Maintenance Manual

Machine types: 90ag and 10154
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See also: User Manual , Setup Manual
Lenovo M4350
Hardware Maintenance Manual
Machine Types: 90AG and 10154

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  • Page 1 Lenovo M4350 Hardware Maintenance Manual Machine Types: 90AG and 10154...
  • Page 2 Appendix A “Notices” on page 109. First Edition (August 2013) © Copyright Lenovo 2013. 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

    Specifications ....Changing the BIOS settings before installing a new Lenovo Support Web site ..operating system....
  • Page 4 Index....BIOS levels ....Flash update procedures ..Lenovo M4350 Hardware Maintenance Manual...

  • Page 5: About This Manual

    Important: This manual is intended only for trained service technicians who are familiar with Lenovo desktop computers. Use this manual along with the advanced diagnostic tests to troubleshoot problems effectively. Before servicing a Lenovo desktop computer, be sure to read and understand Chapter 1 “Safety information” on page 1.

  • Page 7: Chapter 1. Safety Information

    Observe the following rules when working on electrical equipment. © Copyright Lenovo 2013...
  • 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. Lenovo M4350 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) Lenovo M4350 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. Lenovo M4350 Hardware Maintenance Manual...
  • Page 13 Chapter 1 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. Lenovo M4350 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. Lenovo M4350 Hardware Maintenance Manual...
  • Page 17 Chapter 1 Safety information...
  • Page 18 Lenovo M4350 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. Lenovo M4350 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. Lenovo M4350 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 Lenovo M4350 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). Lenovo M4350 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 Lenovo M4350 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 Lenovo M4350 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 Lenovo M4350 Hardware Maintenance Manual...

  • Page 33: Chapter 2. General Information

    Input frequency range: 50 to 60 Hz Voltage-selection switch setting: 115 V ac – High range: Minimum: 200 V ac Maximum: 240 V ac Input frequency range: 50 to 60 Hz Voltage-selection switch setting: 230 V ac © Copyright Lenovo 2013...

  • Page 34: Lenovo Support Web Site

    Lenovo Support Web site Technical support information is available on the Lenovo Support Web site at: http://www.lenovo.com/support This Web site is updated with the latest support information such as the following: • Drivers and software • Diagnostic solutions • Product and service warranty •...

  • Page 35: 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...
  • Page 36 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. Lenovo M4350 Hardware Maintenance Manual...

  • Page 37: Chapter 4. Troubleshooting And Diagnostics

    Chapter 4. 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 28 for additional troubleshooting resources. Basic troubleshooting The following table provides information to help you troubleshoot your computer problems.

  • Page 38: Accessing Control Panel On The Windows 8 Operating System

    • If the diagnostic program detects a hardware failure, contact the Lenovo Customer Support Center. See “Lenovo Support Web site” on page 28 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 28 for more information.

  • Page 39: Audio Problems

    1. Remove the new hardware option or software. If you must remove the computer cover to remove a hardware option, make sure you review and follow the electrical safety information provided with your computer. For your safety, do not operate the computer with the cover removed. 2.

  • Page 40: 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 47 for instructions). If you need technical assistance, see “Lenovo Support Web site” on page 28.

  • Page 41: 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 diagnostic programs (see “Lenovo Solution Center” on page 47 for instructions). If you need technical assistance, see “Lenovo Support Web site” on page 28.

  • Page 42: Intermittent Problems

    If these actions do not correct the problem, run the diagnostic programs (see “Lenovo Solution Center” on page 47 for instructions). If you need technical assistance, see “Lenovo Support Web site” on page 28.

  • Page 43: Hard Disk Drive Problems

    If these actions do not correct the problem, run the diagnostic program Lenovo Solution Center. See “Lenovo Solution Center” on page 47. If you need technical assistance, see “Lenovo Support Web site” on page 28. "No Operating System Found" message or the system not starting from the correct hard disk drive Symptom: "No Operating System Found"...

  • Page 44: The Wireless Keyboard Does Not Work

    See “Enabling or disabling a device” on page 51. If these actions do not correct the problem, run the diagnostic programs (see “Lenovo Solution Center” on page 47 for instructions). If you need technical assistance, see “Lenovo Support Web site” on page 28.

  • Page 45: Monitor Problems

    If these actions do not correct the problem, run the diagnostic programs (see “Lenovo Solution Center” on page 47 for instructions). If you need technical assistance, see “Lenovo Support Web site” on page 28.

  • Page 46: 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 28 for details.
  • Page 47 • “The adapter stops working for no apparent reason” on page 41 • “If your computer is a Gigabit Ethernet model and you use a speed of 1000 Mbps, the connection fails or errors occur” on page 41 • “If your computer is a Gigabit Ethernet model, it cannot connect to the network at 1000 Mbps. Instead, it connects at 100 Mbps”...
  • Page 48 5. If you are using Headset profile, select Bluetooth Hands-free Audio and click the Set Default button. If you are using AV profile, select Stereo Audio and click the Set Default button. 6. Click OK to close the Sound window. Lenovo M4350 Hardware Maintenance Manual...

  • Page 49: Option Problems

    If these actions do not correct the problem, run the diagnostic programs (see “Lenovo Solution Center” on page 47 for instructions). If you need technical assistance, see “Lenovo Support Web site” on page 28.
  • Page 50 2. Open the Windows Explorer and click Computer. 3. Right-click your C drive entry and then click Properties. 4. Click the Tools tab. 5. Click Optimize. 6. Click Optimize again to start a disk-defragmentation process. Lenovo M4350 Hardware Maintenance Manual...

  • Page 51: Printer Problems

    28. For step-by-step instructions on installing memory, see “Installing or replacing a memory module” on page 86. If these actions do not correct the problem, run the diagnostic programs (see “Lenovo Solution Center” on page 47 for instructions). If you need technical assistance, see “Lenovo Support Web site” on page 28.

  • Page 52: Software Problems

    • 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 28 for details. USB problems Symptom: The USB connectors cannot be accessed.

  • Page 53: Diagnostics

    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 4...
  • Page 54 Lenovo M4350 Hardware Maintenance Manual...

  • Page 55: Chapter 5. 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...

  • Page 56: 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. Lenovo M4350 Hardware Maintenance Manual...

  • Page 57: 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 50. 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 58: Selecting A Temporary Startup Device

    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. Lenovo M4350 Hardware Maintenance Manual...

  • Page 59: Changing The Bios Settings Before Installing A New Operating System

    • Enabling the after power loss feature The after power loss feature enables your computer to wake up when the power supply resumes after a sudden loss of electricity. To enable the after power loss feature, do the following: 1. Start the Setup Utility program. See “Starting the Setup Utility program” on page 49. 2.
  • Page 60 Lenovo M4350 Hardware Maintenance Manual...

  • Page 61: Chapter 6. Symptom-To-Fru Index

    • Microprocessor(s) connection 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...

  • Page 62: 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. Lenovo M4350 Hardware Maintenance Manual...
  • Page 63 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 64: 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 55. Lenovo M4350 Hardware Maintenance Manual...

  • Page 65: 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 66 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 92. Lenovo M4350 Hardware Maintenance Manual...

  • Page 67: Chapter 7. Locations

    Figure 1. Front connector, control, and indicator locations Hard disk drive activity indicator USB 2.0 connector Power switch Microphone connector Power indicator Headphone connector Optical drive eject/close button USB 2.0 connector © Copyright Lenovo 2013...

  • Page 68: Locating Connectors On The Rear Of Your Computer

    Used to send audio signals from the computer to external devices, such as powered stereo speakers (speakers with built-in amplifiers), headphones, multimedia keyboards, or the audio line-in connector on a stereo system or other external recording device. Lenovo M4350 Hardware Maintenance Manual...

  • Page 69: Locating Major Frus

    Connector Description 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 5 Ethernet cable. Microphone connector Used to attach a microphone to your computer when you want to record sound or if you use speech-recognition software.
  • Page 70 Figure 3. Locating major FRUs The following table lists the major FRUs shown in Figure 3 “Locating major FRUs” on page 64. Lenovo M4350 Hardware Maintenance Manual...
  • Page 71 Number FRU description Power supply assembly Heat sink and fan assembly Microprocessor Memory modules Optical drive Front WiFi antenna Front audio and USB assembly Front bezel Hard disk drive System board Battery WiFi card module WiFi adapter card Rear WiFi antenna Peripheral Component Interconnect (PCI) card (installed in some models) System fan Keyboard...

  • Page 72: Locating Parts On The System Board

    24-pin power connector PCI Express x1 card slots (2) Power fan connector PCI Express x16 graphics card slot SATA connectors (3) System fan connector Front panel connector (for connecting LED indicators and the power switch) Lenovo M4350 Hardware Maintenance Manual...

  • Page 73: 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 74 Lenovo M4350 Hardware Maintenance Manual...

  • Page 75: Chapter 8. Replacing Frus

    Do not open your computer or attempt any repair before reading and understanding the Chapter 1 “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 76: Removing And Reinstalling The Front Bezel

    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 and reinstall the front bezel. Lenovo M4350 Hardware Maintenance Manual...
  • Page 77 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 69. 3. Remove the front bezel by releasing the three plastic tabs on the left side and pivoting the front bezel outward.

  • Page 78: Replacing The Primary Hard Disk Drive

    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. Lenovo M4350 Hardware Maintenance Manual...
  • Page 79 Figure 9. Removing the primary hard disk drive 6. Slide the new hard disk drive into the hard disk drive bay and align the screw holes in the new hard disk drive with the corresponding holes in the drive bay. Then, install the four screws to secure the new hard disk drive in place.

  • Page 80: Replacing The Thermal Sensor

    4. Locate the thermal sensor. See “Locating major FRUs” on page 63. 5. Disconnect the thermal sensor cable from the thermal sensor connector on the system board. See “Locating parts on the system board” on page 66. Lenovo M4350 Hardware Maintenance Manual...
  • Page 81 6. From inside the chassis, pivot the retaining clip that secures the plastic holder of the thermal sensor inward and then push the clip outward to release the clip. Then disengage the plastic holder holding the thermal sensor from the chassis. Figure 12.

  • Page 82: Replacing The Front Audio And Usb Assembly

    2. Remove the computer cover. See “Removing the computer cover” on page 69. 3. Remove the front bezel. See “Removing and reinstalling the front bezel” on page 70. 4. Locate the front audio and USB assembly. Lenovo M4350 Hardware Maintenance Manual...

  • Page 83: Replacing The Optical Drive

    5. Disconnect the front audio and USB assembly cables from the system board. See “Locating parts on the system board” on page 66. Note: Make sure you note the locations of the cables when you disconnect the cables from the system board.
  • Page 84 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 16. Installing the optical drive Lenovo M4350 Hardware Maintenance Manual...

  • Page 85: Replacing The Power Supply Assembly

    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 66. Then, locate an available five-wire power connector and connect it to the rear of the new optical drive.
  • Page 86 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 87: Replacing The System Fan

    11. To complete the installation or replacement, go to “Completing the parts replacement” on page 103. Replacing the system fan 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 replace the system fan.

  • Page 88: Installing Or Replacing A Pci Card

    To install or replace a PCI 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 69. Lenovo M4350 Hardware Maintenance Manual...
  • Page 89 3. At the rear of the computer, remove the screw that secures the PCI card latch. Figure 21. Removing the screw that secures the PCI card latch 4. Depending on whether you are installing or replacing a PCI card, do one of the following: •...
  • Page 90 6. Install the new PCI card into the appropriate slot on the system board. See “Locating parts on the system board” on page 66. Note: If you are installing a PCI Express x16 graphics card, make sure the memory slot retaining clips are closed before you install the graphics card. Lenovo M4350 Hardware Maintenance Manual...

  • Page 91: Replacing The Battery

    7. Pivot the card latch to the closed position to secure the PCI card. Figure 23. Installing a PCI card 8. Reinstall the screw to secure the PCI card latch in place. 9. To complete the installation or replacement, go to “Completing the parts replacement” on page 103. Replacing the battery Attention: Do not open your computer or attempt any repair before reading and understanding the Chapter 1 “Safety...

  • Page 92: Installing Or Replacing A Memory Module

    2. Remove the computer cover. See “Removing the computer cover” on page 69. 3. Lay the computer on its side for easier access to the system board. 4. Locate the memory slots. See “Locating parts on the system board” on page 66. Lenovo M4350 Hardware Maintenance Manual...
  • Page 93 5. Remove any parts that might prevent your access to the memory slots. Depending on your computer model, you might need to remove the PCI Express x16 graphics card for easier access to the memory slots. See “Installing or replacing a PCI card” on page 82. 6.

  • Page 94: Replacing The Heat Sink And Fan Assembly

    4. Locate the heat sink and fan assembly. See “Locating major FRUs” on page 63. 5. Disconnect the heat sink and fan assembly cable from the microprocessor fan connector on the system board. See “Locating parts on the system board” on page 66. Lenovo M4350 Hardware Maintenance Manual...
  • Page 95 6. Follow this sequence to remove the four screws that secure the heat sink and fan assembly to the system board: a. Partially remove screw , then fully remove screw , and then fully remove screw b. Partially remove screw , then fully remove screw , and then fully remove screw Note: Carefully remove the four screws from the system board to avoid any possible damage to the...

  • Page 96: Replacing The Microprocessor

    5. Lift the small handle and open the retainer to access the microprocessor Figure 30. Accessing the microprocessor 6. Lift the microprocessor straight up and out of the microprocessor socket. Lenovo M4350 Hardware Maintenance Manual...
  • Page 97 Figure 31. Removing the microprocessor 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 98: Replacing The System Board

    3. Lay the computer on its side for easier access to the system board. 4. Remove all memory modules and PCI cards that are currently installed. See “Installing or replacing a memory module” on page 86 and “Installing or replacing a PCI card” on page 82. Lenovo M4350 Hardware Maintenance Manual...
  • Page 99 5. Carefully take note of the locations of all cable connections on the system board and disconnect all the cables. See “Locating parts on the system board” on page 66. 6. Remove the heat sink and fan assembly from the failing system board. See “Replacing the heat sink and fan assembly”...

  • Page 100: Replacing The Wifi Units

    To remove a WiFi adapter 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 69. Lenovo M4350 Hardware Maintenance Manual...
  • Page 101 3. If your computer comes with a WiFi card module that supports the Bluetooth function, disconnect the Bluetooth cable from the WiFi adapter card. Figure 35. Disconnecting the Bluetooth cable Note: The Bluetooth cable connects the Bluetooth connector on the WiFi adapter card to the front USB connector on the system board to support the Bluetooth function.

  • Page 102: Removing The Wifi Card Module

    To remove the WiFi card module, do the following: 1. Remove the WiFi adapter card from the computer, and then disconnect the front and rear WiFi antenna cables from the WiFi card module. Figure 37. Removing the WiFi antenna cables Lenovo M4350 Hardware Maintenance Manual...
  • Page 103 2. Remove the two screws that secure the WiFi card module to the WiFi adapter card. Figure 38. Removing the screws that secure the WiFi card module 3. Pull the WiFi card module out of the mini PCI Express slot to remove it from the WiFi adapter card. Figure 39.
  • Page 104 1. Insert the WiFi card module into the mini PCI Express slot, and then install the two screws to secure the WiFi card module to the WiFi adapter card. Figure 40. Installing the WiFi card module Lenovo M4350 Hardware Maintenance Manual...
  • Page 105 2. Connect the front antenna cable and rear antenna cable to the WiFi card module. Figure 41. Installing the WiFi antenna cables 3. Install the WiFi adapter card into the PCI Express x1 slot on the system board. See “Locating parts on the system board”...

  • Page 106: Installing Or Removing The Rear Wifi Antenna

    To remove the rear WiFi antenna, do the following: 1. Turn off the computer and disconnect all power cords from electrical outlets. 2. Straighten the rear WiFi antenna so that it can be more easily twisted. Lenovo M4350 Hardware Maintenance Manual...

  • Page 107: Installing Or Removing The Front Wifi Antenna

    3. Hold the thicker end of the rear WiFi antenna and unscrew the WiFi antenna from the rear of the computer. Figure 44. Removing the rear WiFi antenna What to do next: • To work with another piece of hardware, go to the appropriate section. •...
  • Page 108 Figure 46. Installing the front WiFi antenna 6. Connect the front antenna cable to the WiFi card module. What to do next: • To work with another piece of hardware, go to the appropriate section. Lenovo M4350 Hardware Maintenance Manual...

  • Page 109: Completing The Parts Replacement

    • To complete the installation or replacement, go to “Completing the parts replacement” on page 103. Removing the front WiFi antenna To remove the front WiFi antenna, do the following: 1. Turn off the computer and disconnect all power cords from electrical outlets. 2.
  • Page 110 8. To update your configuration, refer to Chapter 5 “Using the Setup Utility program” on page 49. 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 111: Chapter 9. Additional Service Information

    “Using passwords” on page 49. 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 112: 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) operating system, do the following: 1.

  • Page 113: 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 114: Power Management

    3. In the left panel, click Choose what the power buttons do. 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. Lenovo M4350 Hardware Maintenance Manual...

  • Page 115: 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 116: Television Output Notice

    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 Microsoft and Windows are trademarks of the Microsoft group of companies.

  • Page 117: Index

    POST and BIOS update passwords flashing the BIOS erasing front lost or forgotten connectors, controls, indicators passwords, using front audio and USB assembly, replacing PCI card front bezel installing, replacing © Copyright Lenovo 2013...
  • Page 118 BIOS, updating (flashing) 106–107 thermal sensor, replacing troubleshooting, basic troubleshooting, diagnostics Lenovo M4350 Hardware Maintenance Manual...

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