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Lenovo Ideapad E490 Hardware Maintenance Manual

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Notebook Lenovo Ideapad E490
O desempenho de ponta e a sua alta durabilidade farão do ThinkPad E490
a escolha perfeita para empresas e profissionais que buscam um notebook
confiável. O ThinkPad E490 possui os mais recentes processadores Intel,
recursos de segurança, bateria de longa duração e muito mais.
bztech.com.br

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Summary of Contents for Lenovo Ideapad E490

  • Page 1 Notebook Lenovo Ideapad E490 O desempenho de ponta e a sua alta durabilidade farão do ThinkPad E490 a escolha perfeita para empresas e profissionais que buscam um notebook confiável. O ThinkPad E490 possui os mais recentes processadores Intel, recursos de segurança, bateria de longa duração e muito mais.
  • Page 2 E490 and R490 Hardware Maintenance Manual...
  • Page 3 Appendix A “Notices” on page 93. First Edition (December 2018) © Copyright Lenovo 2018. LIMITED AND RESTRICTED RIGHTS NOTICE: If data or software is delivered pursuant to a General Services Administration “GSA” contract, use, reproduction, or disclosure is subject to restrictions set forth in Contract No. GS-...

  • Page 4: Table Of Contents

    Removing the microSD card ..Passwords....Disabling the built-in battery ..© Copyright Lenovo 2018...
  • Page 5 1010 Keyboard ....1170 Keyboard bezel assembly ..1020 Base cover assembly ..2010 LCD bezel assembly .

  • Page 6: About This Manual

    Use this manual along with the advanced diagnostic tests to troubleshoot problems effectively. Before servicing a ThinkPad product, be sure to read all the information under Chapter 1 “Safety information” on page 1 and Chapter 2 “Important service information” on page 21. © Copyright Lenovo 2018...
  • Page 7 E490 and R490 Hardware Maintenance Manual...

  • Page 8: Chapter 1. Safety Information

    Do not use this type of mat to protect yourself from electrical shock. © Copyright Lenovo 2018...

  • Page 9: Safety Inspection Guide

    • Find the room emergency power-off (EPO) switch, disconnecting switch, or electrical outlet. If an electrical accident occurs, you can then operate the switch or unplug the power cord quickly. • Do not work alone under hazardous conditions or near equipment that has hazardous voltages. •...

  • Page 10: Handling Devices That Are Sensitive To Electrostatic Discharge

    0.1 ohm or less between the external ground pin and the frame ground. b. The power cord should be the authorized type specified for your computer. Go to: https:// www.lenovo.com/serviceparts-lookup c. Insulation must not be frayed or worn. 4. Check for cracked or bulging batteries.

  • Page 11: Grounding Requirements

    – When working on a double-insulated or battery-operated system, use an ESD common ground or reference point. You can use coax or connector-outside shells on these systems. – Use the round ground prong of the ac plug on ac-operated computers. Grounding requirements Electrical grounding of the computer is required for operator safety and correct system function.
  • Page 12 DANGER DANGER DANGER DANGER DANGER Chapter 1 Safety information...
  • Page 13 E490 and R490 Hardware Maintenance Manual...
  • Page 14 PERIGO PERIGO Chapter 1 Safety information...
  • Page 15 PERIGO PERIGO PERIGO PERIGO PERIGO E490 and R490 Hardware Maintenance Manual...
  • Page 16 PERIGO DANGER DANGER DANGER DANGER Chapter 1 Safety information...
  • Page 17 DANGER DANGER DANGER DANGER VORSICHT E490 and R490 Hardware Maintenance Manual...
  • Page 18 VORSICHT VORSICHT VORSICHT VORSICHT Chapter 1 Safety information...
  • Page 19 VORSICHT VORSICHT VORSICHT E490 and R490 Hardware Maintenance Manual...
  • Page 20 Chapter 1 Safety information...
  • Page 21 E490 and R490 Hardware Maintenance Manual...
  • Page 22 Chapter 1 Safety information...
  • Page 23 E490 and R490 Hardware Maintenance Manual...
  • Page 24 Chapter 1 Safety information...
  • Page 25 E490 and R490 Hardware Maintenance Manual...
  • Page 26 Chapter 1 Safety information...
  • Page 27 E490 and R490 Hardware Maintenance Manual...

  • Page 28: Chapter 2. Important Service Information

    UEFI BIOS downloads. Telephone numbers for Lenovo Support are available at: https://www.lenovo.com/support/phone • System Disassembly/Reassembly videos that show the FRU removals or replacements for the Lenovo authorized service technicians are available in the following support site: https://www.lenovoservicetraining.com/ion/...

  • Page 29: Important Notice For Replacing A System Board

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

  • Page 30: Fru Identification

    FRU identification To identify FRUs for a product, do the following: 1. Go to https://support.lenovo.com/partslookup 2. Type the Machine Type in the corresponding field to get a general FRU list. Or type the Serial Number for more detailed FRU information.
  • Page 31 E490 and R490 Hardware Maintenance Manual...

  • Page 32: Chapter 3. General Checkout

    Following is a list of some common items that are not covered under warranty and some symptoms that might indicate that the system was subjected to stress beyond normal use. © Copyright Lenovo 2018...

  • Page 33: Checkout Guide

    Note: If you are unable to isolate and repair the problem yourself after running the program, save and print the log files created by the program. You need the log files when you speak to a Lenovo technical support representative.

  • Page 34: Quick Test Programs

    Note: The recover bad sectors tool is only available on computers that have hard disk drives installed. Bootable diagnostic programs If the computer you are servicing is not installed with the UEFI diagnostic program, you can download a bootable diagnostic program from the Lenovo Support Web site. The bootable diagnostic programs enable Chapter 3 General checkout...

  • Page 35: Power System Checkout

    1. Go to https://www.lenovo.com/diags 2. Click Lenovo Bootable Diagnostics. 3. Follow the instructions on the Web site to create a bootable diagnostic medium on a USB device or CD. To use the diagnostic medium you have created, do one of the following: •...

  • Page 36: Checking The Built-In Battery And Operational Charging

    2. Start Lenovo Vantage program, and then click Hardware Settings ➙ Power. The ac power adapter information is displayed. Ensure that you use the USB-C type ac power adapter that is shipped with the computer to provide enough power to the computer. Otherwise, a message will be displayed, prompting you that the computer will not be charged or will be charged slowly.
  • Page 37 E490 and R490 Hardware Maintenance Manual...

  • Page 38: Chapter 4. Related Service Information

    Select the CD/DVD drive as the 1st Boot Device. 2. Insert the Operating System Recovery Disc into the DVD drive. 3. Press F10 to save the ThinkPad Setup program configuration changes. Follow the instructions on the screen to begin the recovery process. © Copyright Lenovo 2018...

  • Page 39: Recovery Overview For The Windows 10 Operating System

    4. Select your language and click Next. 5. Read the license. If you agree with the terms and conditions, select I accept these terms and conditions and then click Next. If you do not agree with the terms and conditions, follow the instructions on the screen.

  • Page 40: Recovering Your Operating System If Windows 10 Fails To Start

    Note: The GUI items of the operating system might change without notice. 1. Open the Start menu and then click Settings ➙ Update & security ➙ Recovery. 2. In the Advanced startup section, click Restart now ➙ Troubleshoot ➙ Advanced options. 3.

  • Page 41: Passwords

    If it has, it can be used for access to the hard disk drive. If no master hard disk password is available, neither Lenovo nor Lenovo authorized service technicians provide any services to reset either the user or the master hard disk password, or to recover data from the hard disk drive. The hard disk drive can be replaced for a scheduled fee.

  • Page 42: How To Remove The Power-On Password

    To put the system back to operational status, the only Lenovo and Lenovo-authorized service solution would be to replace the hard disk drive, hybrid drive, or solid-state drive with a scheduled fee.

  • Page 43: Power Management

    9. Press F10 to save changes and exit the ThinkPad Setup program. The user hard disk password and the master hard disk password have been removed. Power management To reduce power consumption, the computer has two power management modes: sleep and hibernation. Sleep mode When the computer enters sleep mode, the following events occur: •...

  • Page 44: Symptom-To-Fru Index

    When the power is turned on, the computer returns from hibernation mode and resumes operation. The hibernation file in the boot record on the hard disk drive, hybrid drive, or solid-state drive is read, and system status is restored from the hard disk drive, hybrid drive, or solid-state drive. Symptom-to-FRU index This section contains following information: •...
  • Page 45 Table 2. Numeric error codes (continued) Symptom or error FRU or action, in sequence 0191 1. Run the ThinkPad Setup program, and then save System Security—Invalid Remote Change requested. current setting by pressing F10. 2. Replace the system board. 0199 1.

  • Page 46: Error Messages

    Beep errors Lenovo SmartBeep technology enables you to decode beep errors with your smartphone when a black screen occurs with beeps from your computer. To decode the beep error with Lenovo SmartBeep technology, do the following: 1.
  • Page 47 Error codes Solutions 0001: Reset error (platform reset not de-asserted) 1. Remove the ac power adapter and the removable battery if your computer has one. Reset the computer by doing one of the following: • For models with the emergency-reset hole, insert a straightened paper clip into the emergency-reset hole.

  • Page 48: No-Beep Symptoms

    LCD technology, but excessive pixel problems can cause viewing concerns.If the LCD you are servicing has two or less visible defective pixels, it should not be considered faulty. 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: •...

  • Page 49: Undetermined Problems

    When analyzing an intermittent problem, do the following: 1. Run the diagnostic test for the system board in loop mode at least 10 times. 2. If no error is detected, do not replace any FRUs. 3. If any error is detected, replace the FRU shown by the FRU code. Rerun the test to verify that no more errors exist.

  • Page 50: Chapter 5. Function Keys

    Open a keyboard setting page. Invoke the function defined by yourself: 1. Open the start menu and click Lenovo Vantage. 2. Click Hardware Settings and then click Input. 3. Locate the Keyboard: User-defined Key section and follow the instructions on the screen to complete the setting.
  • Page 51 Table 6. Function keys (continued) 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. Fn+Left arrow key Has the same function as the Home key on a conventional external keyboard.

  • Page 52: Chapter 6. Locations

    This chapter helps you locate the hardware components on your computer. Locating computer controls, connectors, and indicators This topic helps you locate the controls, connectors, and indicators on your computer. Front 1. Camera 3. Microphones 2. Camera indicator 4. Screen © Copyright Lenovo 2018...

  • Page 53: Base

    Base Note: Depending on the model, your computer might look slightly different from the illustrations in this topic. 1. Power button 4. Trackpad ® 2. Speakers 5. TrackPoint pointing device 3. Fingerprint reader (for selected models) E490 and R490 Hardware Maintenance Manual...

  • Page 54: Left

    Left 1. USB-C connector 4. USB 3.1 connector Gen 1 2. HDMI connector 5. Audio connector 3. Always On USB 3.1 connector Gen 1 Chapter 6 Locations...

  • Page 55: Right

    Right 1. microSD card slot 3. Ethernet connector 2. USB 2.0 connector 4. Security-lock slot Locating FRUs and CRUs This topic introduces the following service parts: • “Major FRUs” on page 50 • “LCD FRUs” on page 52 E490 and R490 Hardware Maintenance Manual...
  • Page 56 CRUs, you can either install the CRU yourself or you can request that a Service Provider install the CRU according to the warranty service for your product. If you intend on installing the CRU, Lenovo will ship the CRU to you. CRU information and replacement instructions are shipped with your product and are available from Lenovo at any time upon request.

  • Page 57: Major Frus

    Major FRUs E490 and R490 Hardware Maintenance Manual...
  • Page 58 Miscellaneous parts kits Power cord ac power adapter for selected models Note: The Lenovo factory recovery USB key is used to restore the Microsoft Windows operating system. It might not come with the computer, and a user might order it from https://www.lenovo.com/lenovorecovery , though additional shipping and handling fees might apply.

  • Page 59: Lcd Frus

    LCD FRUs Table 8. LCD FRUs FRU descriptions Self-service Optional service LCD bezel assembly Integrated camera and microphone combo card LCD panel Hinge kit WLAN antenna assembly LCD rear cover assembly LED and camera cable assembly E490 and R490 Hardware Maintenance Manual...

  • Page 60: Miscellaneous Parts

    • Spec Connector and cable guide This topic provides information to help Lenovo authorized service technicians identify connectors and cables for replacement purpose. To view each FRU and the exploded illustration of the computer, see “Major FRUs” on page 50 and “LCD FRUs” on page 52.
  • Page 61 Table 10. System board Item Connector (location) Internal cable required Cable connection LCD connector LCD cable Connect one end to the LCD panel and the other end (internal) to this connector. Wireless-LAN card slot Insert the wireless-LAN card into this slot. (internal) USB-C connector Connect a USB-C compatible device to this...

  • Page 62: Looking Up Fru Information

    Trackpoint connector Trackpoint cable Connect one end to the TrackPoint and the other end (internal) to this connector. Looking up FRU information For detailed FRU information, including part numbers, descriptions, and substitution part numbers, go to: http://www.lenovo.com/serviceparts-lookup Chapter 6 Locations...
  • Page 63 E490 and R490 Hardware Maintenance Manual...

  • Page 64: Chapter 7. Fru Replacement Notices

    CRU to you. CRU information and replacement instructions are shipped with your product and are available from Lenovo at any time upon request. You can find a list of CRUs for your product in this Hardware Maintenance Manual. An electronic version of this manual can be found at https://www.lenovo.com/support...

  • Page 65: Retaining Serial Numbers

    • They are harder to tighten. Do the following when you service this machine: • Keep the screw kit in your tool bag. For the part number of the screw kit, go to https://www.lenovo.com/ serviceparts-lookup • It is recommended to use new screws.

  • Page 66: Retaining The Uuid

    Maintenance key. Note: Only an authorized Lenovo service technician can access the above Web site. 3. Restart the computer. 4. When the logo is displayed, press Esc. The ThinkPad Config Information Update Utility interface is displayed.
  • Page 67 5. Type 2 under Enter the action desired, then press Enter. The Auto UUID generation utility interface is displayed. 6. Type y under Change UUID. OK? [Y/N], then press Enter. A new UUID is created and written. If a valid UUID already exists, it is not overwritten.

  • Page 68: Chapter 8. Removing Or Replacing A Fru

    CRU to you. CRU information and replacement instructions are shipped with your product and are available from Lenovo at any time upon request. You can find a list of CRUs for your product in this Hardware Maintenance Manual. An electronic version of this manual is available for downloading at https:// www.lenovo.com/support...

  • Page 69: Before Servicing The Computer

    Attention: The system board is sensitive to, and can be damaged by, electrostatic discharge (ESD). Before touching it, establish personal grounding by touching a ground point with one hand or by using an electrostatic discharge strap. Before servicing the computer Carefully read this topic before servicing the computer.

  • Page 70: 1010 Keyboard

    • If the keyboard must be removed to access other FRUs, you need the keyboard removal tool (product part number: 01LX856) to remove the keyboard. You can purchase the tool as a separate FRU at: https:// support.lenovo.com/partslookup Step Screw (quantity)
  • Page 71 E490 and R490 Hardware Maintenance Manual...

  • Page 72: 1020 Base Cover Assembly

    When installing: Ensure that the connectors are attached firmly. 1020 Base cover assembly Removal steps of the base cover assembly Chapter 8 Removing or replacing a FRU...
  • Page 73 Applying labels to the bottom cover The new bottom cover FRU is shipped with a kit containing labels of several kinds. Apply those labels when you replace the bottom cover. For the labels that are not shipped with the new bottom cover, peel them off from the old bottom cover, and adhere them to the new one.

  • Page 74: 1030 Hard Disk Drive, Cable, And Bracket

    1030 Hard disk drive, cable, and bracket For access, remove this FRU: • “1020 Base cover assembly” on page 65 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.

  • Page 75: 1040 Fingerprint Reader Card, Cable, And Bracket

    When installing: Ensure that the connector is attached firmly. 1040 Fingerprint reader card, cable, and bracket For access, remove these FRUs: • “1020 Base cover assembly” on page 65 • “1030 Hard disk drive, cable, and bracket” on page 67 Removal steps of the fingerprint reader card E490 and R490 Hardware Maintenance Manual...

  • Page 76: 1050 Memory Module

    Step Screw (quantity) Color Torque M2 × 2 mm, flat-head, nylon-coated (1) Black 0.98 Nm (1.0 kgf-cm) When installing: Ensure that the connectors are attached firmly. 1050 Memory module For access, remove this FRU: • “1020 Base cover assembly” on page 65 Removal steps of the memory module Chapter 8 Removing or replacing a FRU...

  • Page 77: 1060 M.2 Solid-State Drive And Brackets

    When installing: Insert the notched end of the memory module into the memory slot. Press the memory module in firmly, and pivot it downward until it snaps into place. Ensure that the memory module is firmly installed in the slot and does not move easily.
  • Page 78 For short M.2 solid-state drive Note: If necessary, remove the short M.2 solid-state drive retainer. Step Screw (quantity) Color Torque M2 × 2.5 mm, flat-head, nylon-coated (1) Silver 0.181 Nm (1.85 kgf-cm) For long M.2 solid-state drive Note: If necessary, remove the long M.2 solid-state drive bracket. Torque Step Screw (quantity)

  • Page 79: 1070 I/O Card

    When installing: Ensure that the M.2 solid-state drive is installed firmly. 1070 I/O card For access, remove these FRUs: • “1020 Base cover assembly” on page 65 • “1060 M.2 solid-state drive and brackets” on page 70 Removal steps of the I/O card Step Screw (quantity) Color...

  • Page 80: 1080 Speaker Assembly

    Step Screw (quantity) Color Torque M2 × 2.5 mm, flat-head, nylon-coated (1) Silver 0.181 Nm (1.85 kgf-cm) When installing: Ensure that the screws are installed firmly. 1080 Speaker assembly For access, remove this FRU: • “1020 Base cover assembly” on page 65 Removal steps of the speaker assembly Chapter 8 Removing or replacing a FRU...

  • Page 81: 1090 Wireless Lan Card

    Torque Step Screw (quantity) Color M2 × 4.5–2.2 mm, big-head, nylon-coated (4) Black 0.181 Nm (1.85 kgf-cm) When installing: Ensure that the connector is attached firmly. Ensure that the cables are routed properly. 1090 Wireless LAN card For access, remove this FRU: •...

  • Page 82: 1110 Built-In Battery

    The only exception to this is if the built-in battery is physically damaged or a customer is reporting a possible safety issue. If the Lenovo Vantage program is not installed on the computer, the customer should download and install the program to diagnose the built-in battery, before getting a non-physically damaged built-in battery replaced.

  • Page 83: 1120 Coin-Cell Battery

    Step Screw (quantity) Color Torque M2 × 4 mm, small-head, nylon-coated (2) Black 0.181 Nm (1.85 kgf-cm) When installing: Ensure that the connector is attached firmly. 1120 Coin-cell battery For access, remove these FRUs: • “1020 Base cover assembly” on page 65 •...

  • Page 84: 1130 Thermal Fan Assembly

    When installing: Ensure that the connector is attached firmly. 1130 Thermal fan assembly For access, remove this FRU: • “1020 Base cover assembly” on page 65 Removal step of the thermal fan assembly When you install the thermal fan assembly: •...

  • Page 85: 1140 Trackpad Cable And Trackpad

    • Ensure that the fan connector is attached firmly. • Replace the thermal fan assembly if you observe the following: – The cover of the thermal fan assembly is deformed or damaged. – There is abnormal noise during rotation. When you install the system board: Ensure that all the connectors are attached firmly to the system board.

  • Page 86: 1150 System Board And Usb Bracket

    1150 System board and USB bracket 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 0.15 m (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 87 ThinkPad E490 and R490 For models with a discrete thermal module Microprocessor Video Graphic card (VGA) For models with an integrated thermal module Microprocessor Removal steps of the system board E490 and R490 Hardware Maintenance Manual...
  • Page 88 Torque Step Screw (quantity) Color M2 × 2.5 mm, flat-head, nylon-coated (5) Silver 0.181 Nm (1.85 kgf-cm) Chapter 8 Removing or replacing a FRU...

  • Page 89: 1160 Lcd Unit

    When you install the system board: Ensure that all the connectors are attached firmly to the system board. 1160 LCD unit For access, remove these FRUs in order: • “1020 Base cover assembly” on page 65 Removal steps of the LCD unit Step Screw (quantity) Color...

  • Page 90: 1170 Keyboard Bezel Assembly

    Note: If the keyboard must be removed to access other FRUs, you need the keyboard removal tool (product part number: 01LX856) to remove the keyboard. You can purchase the tool as a separate FRU at: https://support.lenovo.com • “1020 Base cover assembly” on page 65 •...

  • Page 91: 2020 Lcd Panel

    When installing: Ensure that all the latches are attached firmly. 2020 LCD panel For access, remove this FRU in order: • “2010 LCD bezel assembly” on page 83 Removal steps of the LCD panel Step Screw (quantity) Color Torque 0.181 Nm M2 ×...

  • Page 92: 2030 Hinge Kit

    When you install the LCD panel: Ensure that all the connectors are attached firmly. 2030 Hinge kit For access, remove these FRUs in order: • “1160 LCD unit” on page 82 • “2010 LCD bezel assembly” on page 83 • “2020 LCD panel” on page 84 Chapter 8 Removing or replacing a FRU...
  • Page 93 Removal steps of the short hinge kit Step Screw (quantity) Color Torque M2.5 × 2.5 mm, flat-head, nylon-coated (6) Black 0.294 Nm (3.0 kgf-cm) E490 and R490 Hardware Maintenance Manual...
  • Page 94 Removal steps of the long hinge kit Step Screw (quantity) Color Torque M2.5 × 2.5 mm, flat-head, nylon-coated (6) Black 0.294 Nm (3.0 kgf-cm) 0.181 Nm M2 × 2.5 mm, flat-head, nylon-coated (2) Silver (1.85 kgf-cm) When you install the hinge kit: Ensure that all the connectors are attached firmly.

  • Page 95: 2040 Integrated Camera And Microphone Combo Card

    2040 Integrated camera and microphone combo card For access, remove these FRUs in order: • “1160 LCD unit” on page 82 • “2010 LCD bezel assembly” on page 83 • “2020 LCD panel” on page 84 • “2030 Hinge kit” on page 85 Removal steps of the integrated camera and microphone combo card When installing: Ensure that the connector is attached firmly.

  • Page 96: 2060 Wireless Lan Antennas Assembly And Lcd Rear Cover Assembly

    Removal steps of the LED and camera cable assembly 2060 Wireless LAN antennas assembly and LCD rear cover assembly For access, remove these FRUs in order: • “1020 Base cover assembly” on page 65 • “2010 LCD bezel assembly” on page 83 •...
  • Page 97 Remove the wireless LAN antennas assembly from the LCD rear cover assembly. Antenna locations Wireless LAN main antenna (gray) Wireless LAN auxiliary antenna (black) Peel off the stickers on the wireless LAN antennas assembly from the LCD rear cover assembly. E490 and R490 Hardware Maintenance Manual...
  • Page 98 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. Chapter 8 Removing or replacing a FRU...
  • Page 99 E490 and R490 Hardware Maintenance Manual...

  • Page 100: 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 101 EU contact: Lenovo, Einsteinova 21, 851 01 Bratislava, Slovakia Trademarks LENOVO, LENOVO logo, THINKPAD, THINKPAD logo, and TRACKPOINT are trademarks of Lenovo. Intel and Optane are trademarks of Intel Corporation or its subsidiaries in the U.S. and/or other countries. Microsoft and Windows are trademarks of the Microsoft group of companies. The terms HDMI and HDMI High-Definition Multimedia Interface are trademarks or registered trademarks of HDMI Licensing LLC in the United States and other countries.

  • Page 102: Appendix B. Abbreviation And Acronym Table

    ICCID International Standardization Organization local area network liquid crystal display media access control machine type machine type and model personal computer Platform Controller Hub POST power-on self-test © Copyright Lenovo 2018...
  • Page 103 Abbreviation Term random-access memory 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...
  • Page 105 Part Number: SP40K05238 Printed in China (1P) P/N: SP40K05238...
  • Page 106 *1PSP40K05238 *...
  • Page 107 Notebook Lenovo ThinkPad E490 14 Polegadas LED O desempenho de ponta e a sua alta durabilidade farão do ThinkPad E490 a escolha perfeita para empresas e profissionais que buscam um notebook confiável. O ThinkPad E490 possui os mais recentes processadores Intel, recursos de segurança, bateria de longa duração e...

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