ThinkPad E550 Hardware Maintenance Manual
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ThinkPad E550 Hardware Maintenance Manual

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ThinkPad E550, E555, and E550c

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  • Page 1 Hardware Maintenance Manual ThinkPad E550, E555, and E550c...
  • Page 2 Note: Before using this information and the product it supports, be sure to read the general information under Appendix A “Notices” on page 101. Second Edition (January 2015) © Copyright Lenovo 2014, 2015. LIMITED AND RESTRICTED RIGHTS NOTICE: If data or software is delivered pursuant a General Services Administration “GSA”...

  • Page 3: Table Of Contents

    Contents About this manual... Using the advanced startup options ..Recovering your operating system if Windows Chapter 1. Safety information ..1 8.1 fails to start.
  • Page 4 Chapter 9. Removing or replacing a 1170 LCD unit ....FRU ....65 1180 Base cover assembly .

  • Page 5: About This Manual

    Use this manual along with the advanced diagnostic tests to troubleshoot problems. Important: This manual is intended only for trained service technicians who are familiar with ThinkPad products. Use this manual along with the advanced diagnostic tests to troubleshoot problems effectively.
  • Page 6 Hardware Maintenance Manual...

  • Page 7: Chapter 1. Safety Information

    Chapter 1. Safety information This chapter presents the following safety information that you need to be familiar with before you service a ThinkPad notebook computer. • “General safety” on page 1 • “Electrical safety” on page 2 • “Safety inspection guide” on page 3 •...

  • Page 8: Electrical Safety

    Electrical safety Observe the following rules when working on electrical equipment. Important: • Use only approved tools and test equipment. Some hand tools have handles covered with a soft material that does not insulate you when working with live electrical currents. •...

  • Page 9: Safety Inspection Guide

    This guide addresses only those items. You should use good judgment to identify potential safety hazards due to attachment of non-ThinkPad features or options not covered by this inspection guide. If any unsafe conditions are present, you must determine how serious the apparent hazard could be and whether you can continue without first correcting the problem.

  • Page 10: Grounding Requirements

    Notes: 1. Use product-specific ESD procedures when they exceed the requirements noted here. 2. Ensure that the ESD protective devices you use have been certified (ISO 9000) as fully effective. When handling ESD-sensitive parts: • Keep the parts in protective packages until they are inserted into the product. •...
  • Page 11 DANGER DANGER DANGER DANGER DANGER DANGER Chapter 1 Safety information...
  • Page 12 DANGER Hardware Maintenance Manual...
  • Page 13 PERIGO PERIGO Chapter 1 Safety information...
  • Page 14 PERIGO PERIGO PERIGO PERIGO PERIGO PERIGO Hardware Maintenance Manual...
  • Page 15 DANGER DANGER DANGER DANGER DANGER Chapter 1 Safety information...
  • Page 16 DANGER DANGER DANGER VORSICHT VORSICHT Hardware Maintenance Manual...
  • Page 17 VORSICHT VORSICHT VORSICHT VORSICHT Chapter 1 Safety information...
  • Page 18 VORSICHT VORSICHT Hardware Maintenance Manual...
  • Page 19 Chapter 1 Safety information...
  • Page 20 Hardware Maintenance Manual...
  • Page 21 Chapter 1 Safety information...
  • Page 22 Hardware Maintenance Manual...
  • Page 23 Chapter 1 Safety information...

  • Page 24: Laser Compliance Statement (Multilingual Translations)

    Laser compliance statement (multilingual translations) The laser compliance statements in this section are provided in the following languages: • English • Arabic • Brazilian Portuguese • French • German • Hebrew • Japanese • Korean • Spanish • Traditional Chinese Hardware Maintenance Manual...
  • Page 25 Chapter 1 Safety information...
  • Page 26 Hardware Maintenance Manual...
  • Page 27 Chapter 1 Safety information...
  • Page 28 Hardware Maintenance Manual...
  • Page 29 Chapter 1 Safety information...
  • Page 30 Hardware Maintenance Manual...

  • Page 31: Chapter 2. Important Service Information

    Chapter 2. Important service information This chapter introduces the following important service information that applies to all machine types supported by this manual: • “Strategy for replacing FRUs” on page 25 – “Strategy for replacing a hard disk drive or a solid-state drive” on page 25 –...

  • Page 32: Important Notice For Replacing A System Board

    Attention: The drive startup sequence in the computer you are servicing might have been changed. Be extremely careful during write operations such as copying, saving, or formatting. If you select an incorrect drive, data or programs can be overwritten. Important notice for replacing a system board Some components mounted on a system board are very sensitive.
  • Page 33 To identify the major FRUs for a product, do the following: 1. Go to: http://support.lenovo.com/ibasepartslookup 2. Type the Machine Type and Serial Number in the corresponding fields. 3. Click Submit. eSupport also can be used to view the general FRU list for a product. The FRU list is a general list of components and does not contain specific model information.
  • Page 34 Hardware Maintenance Manual...

  • Page 35: Chapter 3. General Checkout

    Chapter 3. General checkout This chapter presents following information: • “What to do first” on page 29 • “Checkout guide” on page 30 – “Lenovo Solution Center” on page 30 – “Quick test programs” on page 30 – “UEFI diagnostic program” on page 31 –...

  • Page 36: Checkout Guide

    Checkout guide Use the following procedures as a guide in identifying and correcting problems with the ThinkPad notebook computer. Note: The diagnostic tests are intended to test only ThinkPad products. The use of non-ThinkPad products, prototype cards, or modified options can lead to false indications of errors and invalid system responses.

  • Page 37: Uefi Diagnostic Program

    If an error code is displayed, go to “Symptom-to-FRU index” on page 43 for error code descriptions and troubleshooting hints. 2. When the ThinkPad logo is displayed, repeatedly press and release the F10 key. The main screen of the UEFI diagnostic program is displayed.

  • Page 38: Bootable Diagnostic Programs

    33, and check the power sources. If an error code is displayed, go to “Symptom-to-FRU index” on page 43 for error code descriptions and troubleshooting hints. 3. When the ThinkPad logo is displayed, repeatedly press and release the F12 key. When the Boot Menu window opens, release the F12 key.

  • Page 39: Power System Checkout

    Power system checkout To verify if a battery pack or an ac power adapter is functional, do the following: 1. Turn off the computer. 2. Remove the battery pack. 3. Connect the ac power adapter. 4. Check that power is supplied when you turn on the computer. 5.

  • Page 40: Checking The Battery Pack

    4. Check the battery status icon again. If the same error still exists, replace the system board. Otherwise, check the original battery pack. See “Checking the battery pack” on page 34. Checking the battery pack This system supports only batteries specially designed for this specific system and manufactured by Lenovo or an authorized builder.
  • Page 41 Wire Voltage (V dc) +2.5 to +3.2 Black Ground • If the voltage is correct, replace the system board. • If the voltage is not correct, replace the coin-cell battery. • If the coin-cell battery discharges quickly after replacement, replace the system board. Chapter 3 General checkout...
  • Page 42 Hardware Maintenance Manual...

  • Page 43: Chapter 4. Related Service Information

    1. Connect an external CD/DVD drive. 2. Make the CD/DVD drive the first startup device in the startup sequence using the following procedure: a. Open the ThinkPad Setup program and select Startup ➙ Boot. b. Select the CD/DVD drive as the 1st Boot Device.

  • Page 44: Recovery Overview For The Windows 8.1 Operating System

    10. After you have completed the Windows setup, you might want to restore the original startup sequence. Start the ThinkPad Setup program and then press F9 to restore the default settings. Press F10 to save changes and exit the ThinkPad Setup program.

  • Page 45: Using The Advanced Startup Options

    • To perform a quick format, click Just remove my files to start the process. The process will take several minutes. • To perform a complete format, click Fully clean the drive to start the process. The process will take several hours. 4.

  • Page 46: Passwords

    Passwords As many as three passwords might be needed for a ThinkPad notebook computer: the power-on password, the hard disk password, and the supervisor password. If any of these passwords has been set, a prompt for it will be displayed on the screen whenever the computer is turned on.

  • Page 47: Power-On Password

    Supervisor password A supervisor password protects the system information stored in the ThinkPad Setup program. The user must enter the supervisor password in order to get access to the ThinkPad Setup program and change the system configuration. Attention: If the supervisor password has been forgotten and cannot be made available to the service technician, there is no service procedure to reset the password.

  • Page 48: How To Remove The Hard Disk Password

    7. Type the current master hard disk password in the Enter Current Password field. Then, leave the Enter New Password field blank, and press Enter twice. 8. Press Fn+F10 to save changes and exit the ThinkPad Setup program. The user hard disk password and the master hard disk password have been removed.

  • Page 49: Hibernation Mode

    • The hard disk drive or solid-state drive is powered off. • The microprocessor stops. To enter sleep mode, do one of the following: • For Windows 7: Click the arrow beside the Shut down icon, and then select Sleep. To return from sleep mode, press any key.

  • Page 50: Numeric Error Codes

    If no numeric code is displayed, check the narrative descriptions of symptoms. If the symptom is not described there, go to “Intermittent problems” on page 47. Note: For a device not supported by diagnostic codes in the ThinkPad notebooks, see the manual for that device.
  • Page 51 EFI Variable Block Data was destroyed. 2. Replace the system board. 0271 1. Run ThinkPad Setup to reset the time and date Real-Time Clock Error. Check Date and Time settings. 2. Replace the coin-cell battery and run the ThinkPad Setup program to reset the time and date.

  • Page 52: Error Messages

    Error messages Table 3. Error messages Symptom or error (beeps, if any) FRU or action, in sequence Fan error. 1. Replace the fan. (four short beeps, one long beep) 2. Apply thermal grease. 3. Replace the system board. Thermal sensing error. Replace the system board.

  • Page 53: Lcd-Related Symptoms

    However, if the LCD has three or more visible defective pixels, it will be deemed as defective by Lenovo and it should be replaced. Notes: • This policy applies to all ThinkPad Notebooks purchased on 1 January, 2008 or later. • Lenovo will not provide warranty replacement if the LCD is within specifications because we cannot guarantee that any replacement LCD will have zero pixel defects.
  • Page 54 2. Visually check each FRU for damage. Replace any damaged FRU. 3. Remove or disconnect all of the following devices: a. Non-ThinkPad devices b. Devices attached to the dock c. Printer, mouse, and other external devices d. Battery pack e. Hard disk drive or solid-state drive f.

  • Page 55: Chapter 5. Status Indicators

    Chapter 5. Status indicators This chapter introduces the status indicators of the computer. Table 7. Status indicators Indicator Description Speaker-mute indicator On: The speakers are muted. Microphone-mute On: The microphones are muted. indicator Camera-status indicator On: The camera is in use. ©...
  • Page 56 Table 7. Status indicators (continued) Indicator Description Blinks for three times: The computer is initially connected to power. System-status indicators On: The computer is on (in normal mode). Off: The computer is off or in hibernation mode. Blinks slowly: The computer is in sleep mode. Blinks fast: The computer is entering hibernation mode.

  • Page 57: Chapter 6. Special Keys

    Chapter 6. Special keys The following table describes the functions of function keys and key combinations. Table 8. Special keys Special key Description Enables or disables the Fn Lock function. When the Fn Lock function is disabled: The Fn Lock indicator is off. To initiate the special function of each key, press the function keys directly.
  • Page 58 Table 8. Special keys (continued) Special key Description Opens Computer. Fn+B Has the same function as the Break key on a conventional keyboard. Fn+K Has the same function as the ScrLK key on a conventional keyboard. Fn+P Has the same function as the Pause key on a conventional keyboard. Fn+S Has the same function as the SysRq key on a conventional keyboard.

  • Page 59: Chapter 7. Locations

    Chapter 7. Locations This chapter introduces the locations of the hardware components on your computer. Locating computer controls, connectors, and indicators This topic introduces the locations of the computer controls, connectors, and indicators. Front view Microphones Camera Power button Lenovo OneLink connector ac power connector USB 2.0 connector Optical drive or optical-drive bay bezel...

  • Page 60: Rear View

    Rear view System-status indicator Always On USB 3.0 connector USB 3.0 connector High-Definition Multimedia Interface (HDMI™) connector Video graphics array (VGA) connector Ethernet connector Fan louvers Security-lock slot : For the description of the system-status indicator, see Chapter 5 “Status indicators” on page 49. Bottom view Small bottom cover Battery latches...
  • Page 61 CRU within thirty (30) days of your receipt of the replacement CRU. See your Lenovo Limited Warranty documentation for full details. ThinkPad computers contain the following types of CRUs: – Self-service CRUs: These CRUs unplug or are held by no more than two screws. Examples of these types of CRUs include the ac power adapter, power cord, battery, and hard disk drive or solid-state drive.

  • Page 62: Major Frus And Crus

    Major FRUs and CRUs Hardware Maintenance Manual...
  • Page 63 Table 9. Major FRUs and CRUs FRU description Self-service CRU Optional-service CRU LCD unit Keyboard bezel assembly Coin-cell battery Battery pack Speaker assembly Lenovo-OneLink-connector cover dc-in/USB-connector board with cable Optical-drive bay bezel Optical drive Small bottom cover Large bottom cover Audio connector card with cable Hard disk drive assembly or solid-state drive assembly...

  • Page 64: Lcd Frus And Crus

    LCD FRUs and CRUs For models with a 2D camera Table 10. LCD FRUs and CRUs for models with a 2D camera FRU description Self-service CRU Optional-service CRU LCD bezel LCD hinges Wireless-LAN antenna assembly Hardware Maintenance Manual...
  • Page 65 Table 10. LCD FRUs and CRUs for models with a 2D camera (continued) FRU description Self-service CRU Optional-service CRU Camera/microphone module LCD cover kit LCD cables LCD panel For models with a 3D camera Chapter 7 Locations...

  • Page 66: Miscellaneous Kits And Other Frus

    Table 11. LCD FRUs and CRUs for models with a 3D camera FRU description Self-service CRU Optional-service CRU LCD bezel LCD hinges Wireless-LAN antenna assembly Camera module Microphone module LCD cover kit LCD cables LCD panel Miscellaneous kits and other FRUs Table 12.

  • Page 67: Chapter 8. Fru Replacement Notices

    This chapter presents notices related to removing and replacing parts. Read this chapter carefully before replacing any FRU. Screw notices Loose screws can cause a reliability problem. In the ThinkPad notebook computer, this problem is addressed with special nylon-coated screws that have the following characteristics: • They maintain tight connections.

  • Page 68: Retaining Serial Numbers

    4. When the logo is displayed, press Esc. The ThinkPad Config Information Update Utility interface is displayed. 5. Type 1 under Enter the action desired, then press Enter. The ThinkPad Serial Number Update Utility for Asset ID screen is displayed.

  • Page 69: Retaining The Uuid

    2. When the logo is displayed, press Esc. The ThinkPad Config Information Update Utility interface is displayed. 3. Type 1 under Enter the action desired, then press Enter. The ThinkPad Serial Number Update Utility for Asset ID screen is displayed.
  • Page 70 Hardware Maintenance Manual...

  • Page 71: Chapter 9. Removing Or Replacing A Fru

    Chapter 9. Removing or replacing a FRU This chapter provides instructions on how to remove or replace a FRU. CRU statement for customers: You can resolve some problems with your product with a replacement part you can install yourself, called a “Customer Replaceable Unit”...

  • Page 72: 1010 Lenovo-Onelink-Connector Cover

    1010 Lenovo-OneLink-connector cover Removal steps of the Lenovo-OneLink-connector cover Notes: • Depending on the model, your computer might look different from the illustration above. • Ensure that you reattach the connector cover to the Lenovo OneLink connector after finishing the servicing. 1020 Battery pack Important notice for replacing a battery pack Attention: Lenovo has no responsibility for the performance or safety of unauthorized batteries, and provides no...

  • Page 73: 1030 Large Bottom Cover

    Unlock the battery pack latch . Hold the battery pack lock lever in the unlocked position and remove the battery pack When installing: Install the battery pack into the slot. Ensure that the battery pack latch is in the locked position.

  • Page 74: 1040 Small Bottom Cover

    When installing: Attach the large bottom cover as shown in the following illustration. 1040 Small bottom cover For access, remove this FRU: • “1020 Battery pack” on page 66 Removal steps of the small bottom cover Loosen the screw and then remove the small bottom cover Hardware Maintenance Manual...

  • Page 75: 1050 Optical Drive Or Optical-Drive Bay Bezel

    When installing: Attach the small bottom cover as shown in the following illustration. 1050 Optical drive or optical-drive bay bezel For access, remove these FRUs in order: • “1020 Battery pack” on page 66 • “1030 Large bottom cover” on page 67 Removal steps of the optical drive or optical-drive bay bezel Step Screw (quantity)

  • Page 76: 1060 Memory Module

    1060 Memory module For access, remove these FRUs in order: • “1020 Battery pack” on page 66 • “1030 Large bottom cover” on page 67 Removal steps of the memory module When installing: Insert the notched end of the memory module into the slot at an angle of about 20 degrees. Press the memory module firmly, and pivot it downwards until it snaps into place.
  • Page 77 • “1030 Large bottom cover” on page 67 Attention: • Do not drop the drive or apply any physical shock to it. The drive is sensitive to physical shock. Improper handling can cause damage and permanent loss of data. • Before removing the drive, have the user make a backup copy of all the information on it if possible. •...

  • Page 78: 1080 Wireless Lan Card

    1080 Wireless LAN card For access, remove these FRUs in order: • “1020 Battery pack” on page 66 • “1030 Large bottom cover” on page 67 Removal steps of the wireless LAN card In step , unplug the connectors by using the antenna RF connector removal tool or pick the connectors with your fingers and gently unplug them as shown.

  • Page 79: 1090 Coin-Cell Battery

    When installing: Plug the gray cable into the main connector, and the black cable into the auxiliary connector on the card. 1090 Coin-cell battery For access, remove these FRUs in order: • “1020 Battery pack” on page 66 • “1030 Large bottom cover” on page 67 •...
  • Page 80 Torque Step Screw (quantity) Color M2 × 8 mm, flat-head, nylon-coated (3) Black 0.181 Nm (1.85 kgf-cm) Hardware Maintenance Manual...

  • Page 81: 1120 Keyboard Bezel Assembly

    When installing: Ensure that the connector is attached firmly. 1120 Keyboard bezel assembly For access, remove these FRUs in order: • “1020 Battery pack” on page 66 • “1030 Large bottom cover” on page 67 • “1050 Optical drive or optical-drive bay bezel” on page 69 •...
  • Page 82 Step Screw (quantity) Color Torque Black 0.181 Nm M2 × 8 mm, wafer-head, nylon-coated (15) (1.85 kgf-cm) M2 × 3 mm, wafer-head, nylon-coated (6) Black 0.181 Nm (1.85 kgf-cm) Step Screw (quantity) Color Torque Black 0.181 Nm M2 × 5 mm, wafer-head, nylon-coated (4) (1.85 kgf-cm) Hardware Maintenance Manual...
  • Page 83 When installing: Ensure that the connectors are attached firmly to the system board. In step , release the keyboard bezel assembly from the frame using a plastic pry tool. When installing: Ensure that all the latches are attached firmly. Chapter 9 Removing or replacing a FRU...

  • Page 84: 1130 System Board And Thermal Fan

    1130 System board and thermal fan Important notices for handling the system board: When handling the system board, read the following: • The system board has an accelerometer, which can be broken when several thousands of G-forces are applied. Note: Dropping a system board from a height of as little as 6 inches so that it falls flat on a hard bench can subject the accelerometer to as much as 6000 G's of shock.
  • Page 85 Fusion Controller Hub (FCH) Graphics Processing Unit (GPU) For models with an integrated thermal module Accelerated Processing Unit (APU) Fusion Controller Hub (FCH) ThinkPad E550 and E550c For models with a discrete thermal module Microprocessor Graphics Processing Unit (GPU) Chapter 9...
  • Page 86 For models with an integrated thermal module Microprocessor Removal steps of the system board Hardware Maintenance Manual...
  • Page 87 Torque Step Screw (quantity) Color M2 × 5 mm, flat-head, nylon-coated (4) Black 0.181 Nm (1.85 kgf-cm) When installing: Ensure that the connectors are attached firmly. Removal steps of the thermal fan Chapter 9 Removing or replacing a FRU...
  • Page 88 When installing: • Ensure that the connector is attached firmly. • Do not press the top of the fan cover and the fan hub. • Before you attach the fan assembly to the computer, apply thermal grease, at an amount of 0.2 grams, on the part marked as shown in the following illustrations.

  • Page 89: 1140 Dc-In/Usb-Connector Board With Cable

    For models with an integrated thermal pipe 1140 dc-in/USB-connector board with cable For access, remove these FRUs in order: • “1020 Battery pack” on page 66 • “1030 Large bottom cover” on page 67 • “1050 Optical drive or optical-drive bay bezel” on page 69 •...

  • Page 90: 1150 Audio Connector Card With Cable

    When installing: Ensure that the connector is attached firmly to the system board. Step Screw (quantity) Color Torque Black 0.181 Nm M2 × 5 mm, wafer-head, nylon-coated (1) (1.85 kgf-cm) 1150 Audio connector card with cable For access, remove these FRUs in order: •...

  • Page 91: 1160 Speaker Assembly

    Removal steps of the audio connector card with cable Note: The system board of the computer that you are servicing might be different from the one in the following illustrations. Step Screw (quantity) Color Torque Black 0.181 Nm M2 × 5 mm, wafer-head, nylon-coated (1) (1.85 kgf-cm) 1160 Speaker assembly For access, remove these FRUs in order:...

  • Page 92: 1170 Lcd Unit

    Removal steps of the speaker assembly Step Screw (quantity) Color Torque Black 0.181 Nm M2 × 2.4 mm, wafer-head, nylon-coated, big head (4) (1.85 kgf-cm) Cable routing: When you install the speaker assembly, route the cables as shown in the following illustration. 1170 LCD unit For access, remove these FRUs in order: •...
  • Page 93 • “1040 Small bottom cover” on page 68 • “1050 Optical drive or optical-drive bay bezel” on page 69 • “1070 Hard disk drive assembly or solid-state drive assembly” on page 70 • “1080 Wireless LAN card” on page 72 •...
  • Page 94 In step , release the cables from the cable guides. Hardware Maintenance Manual...

  • Page 95: 1180 Base Cover Assembly

    Step Screw (quantity) Color Torque M 2.5 × 5 mm, wafer-head, nylon-coated (4) Black 0.294 Nm (3 kgf-cm) 1180 Base cover assembly For access, remove these FRUs in order: • “1010 Lenovo-OneLink-connector cover” on page 66 • “1020 Battery pack” on page 66 •...
  • Page 96 • “1110 Keyboard” on page 73 • “1120 Keyboard bezel assembly” on page 75 • “1130 System board and thermal fan” on page 78 • “1140 dc-in/USB-connector board with cable” on page 83 • “1150 Audio connector card with cable” on page 84 •...
  • Page 97 Applying labels to the base cover assembly The new base cover FRU is shipped with a kit containing labels of several kinds. Apply those labels when you replace the base cover. For the labels that are not shipped with the new base cover, peel them from the old base cover, and adhere them to the new one.

  • Page 98: 2010 Lcd Bezel

    2010 LCD bezel For access, remove these FRUs in order: • “1010 Lenovo-OneLink-connector cover” on page 66 • “1020 Battery pack” on page 66 • “1030 Large bottom cover” on page 67 • “1040 Small bottom cover” on page 68 •...
  • Page 99 • “1120 Keyboard bezel assembly” on page 75 • “1130 System board and thermal fan” on page 78 • “1140 dc-in/USB-connector board with cable” on page 83 • “1150 Audio connector card with cable” on page 84 • “1170 LCD unit” on page 86 •...

  • Page 100: 2030 Lcd Hinges

    2030 LCD hinges For access, remove these FRUs in order: • “1010 Lenovo-OneLink-connector cover” on page 66 • “1020 Battery pack” on page 66 • “1030 Large bottom cover” on page 67 • “1040 Small bottom cover” on page 68 •...

  • Page 101: 2040 Camera/Microphone Module For Models With A 2D Camera

    2040 Camera/microphone module for models with a 2D camera For access, remove these FRUs in order: • “1010 Lenovo-OneLink-connector cover” on page 66 • “1020 Battery pack” on page 66 • “1030 Large bottom cover” on page 67 • “1040 Small bottom cover” on page 68 •...

  • Page 102: 2050 Camera And Microphone Modules For Models With A 3D Camera

    Removal steps of the camera/microphone module When installing: Ensure that the connector is attached firmly. 2050 Camera and microphone modules for models with a 3D camera For access, remove these FRUs in order: • “1010 Lenovo-OneLink-connector cover” on page 66 •...

  • Page 103: 2060 Lcd Cables

    Removal steps of the camera and microphone modules When installing: Ensure that the connector is attached firmly. 2060 LCD cables For access, remove these FRUs in order: • “1010 Lenovo-OneLink-connector cover” on page 66 • “1020 Battery pack” on page 66 •...

  • Page 104: 2070 Wireless Lan Assembly And Lcd Rear Cover

    Removal steps of LCD cables 2070 Wireless LAN assembly and LCD rear cover For access, remove these FRUs in order: • “1010 Lenovo-OneLink-connector cover” on page 66 • “1020 Battery pack” on page 66 • “1030 Large bottom cover” on page 67 •...
  • Page 105 Attention: When you route the cables, ensure that they are not subject to any tension. Tension could cause the cables to be damaged by the cable guides, or a wire to be broken. Antenna locations Wireless-LAN auxiliary antenna (black) Wireless-LAN main antenna (gray) Chapter 9 Removing or replacing a FRU...
  • Page 106 Hardware Maintenance Manual...

  • Page 107: Appendix A. Notices

    Appendix A. Notices Lenovo may not offer the products, services, or features discussed in this document in all countries. Consult your local 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.

  • Page 108: Electronic Emission Notices

    The following terms are trademarks of Lenovo in the United States, other countries or both: Lenovo Lenovo logo ThinkPad ThinkPad logo TrackPoint Ultrabay Microsoft, Windows, and Windows Server are trademarks of the Microsoft group of companies. Intel is a trademark or registered trademarks of Intel Corporation or its subsidiaries in the United States and other countries.

  • Page 109: Appendix B. Abbreviation And Acronym Table

    Appendix B. Abbreviation and acronym table The following table lists some abbreviations and acronyms which might be used in this manual. Abbreviation Term third generation of mobile telecommunications technology Ball Grid Array BIOS basic input/output system CMOS complementary metal-oxide semiconductor Certificate of Authentication cyclic redundancy check cathode ray tube...
  • Page 110 Abbreviation Term radio frequency RFID radio-frequency identification ring indicator registered jack SATA Serial Advanced Technology Attachment subscriber identity module supervisor password TFTs thin-film transistors UEFI Unified Extensible Firmware Interface Universal Serial Bus UUID universally unique identifier video graphics array VRAM video random-access memory wide area network Hardware Maintenance Manual...
  • Page 112 Part Number: SP40A27128_01 Printed in China (1P) P/N: SP40A27128_01 *1PSP40A27128_01*...

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