Lenovo 100e Chromebook Gen 4 Hardware Maintenance Manual
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Lenovo 100e Chromebook Gen 4 Hardware Maintenance Manual

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Lenovo 100e Chromebook Gen 4
Hardware Maintenance Manual

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Summary of Contents for Lenovo 100e Chromebook Gen 4

  • Page 1 Lenovo 100e Chromebook Gen 4 Hardware Maintenance Manual...
  • Page 2 First Edition (Feburary 2024) © Copyright Lenovo 2024.

  • Page 3: Table Of Contents

    Chapter 6. Label locations ..55 Type, quantity, and areas of thermal interface materials application on the heat sink ..Trademarks ....lvii © Copyright Lenovo 2024...
  • Page 4 Lenovo 100e Chromebook Gen 4 Hardware Maintenance Manual...

  • Page 5: About This Manual

    Important: • This manual is intended only for trained service technicians who are familiar with Lenovo products. • Before servicing a Lenovo product, be sure to read all the information under Chapter 1 “Safety information” on page 1. © Copyright Lenovo 2024...
  • Page 6 Lenovo 100e Chromebook Gen 4 Hardware Maintenance Manual...

  • Page 7: Chapter 1. Safety Information

    • Do not work alone under hazardous conditions or near equipment that has hazardous voltages. • Disconnect all power before: – Performing a mechanical inspection – Working near power supplies © Copyright Lenovo 2024...

  • Page 8: Safety Inspection Guide

    This guide addresses only those items. You should use good judgment to identify potential safety hazards due to attachment of non-Lenovo features or options not covered by this inspection guide.

  • Page 9: Handling Devices That Are Sensitive To Electrostatic Discharge

    4. Check for cracked or bulging batteries. 5. Remove the cover. 6. Check for any obvious non-Lenovo alterations. Use good judgment as to the safety of any non-Lenovo alterations. 7. Check inside the unit for any obvious unsafe conditions, such as metal filings, contamination, water or other liquids, or signs of fire or smoke damage.

  • Page 10: Grounding Requirements

    The safety notices in this section are provided in the following languages: • English • Arabic • Brazilian Portuguese • French • German • Hebrew • Japanese • Korean • Spanish • Traditional Chinese DANGER DANGER DANGER Lenovo 100e Chromebook Gen 4 Hardware Maintenance Manual...
  • Page 11 DANGER DANGER DANGER DANGER DANGER Chapter 1 Safety information...
  • Page 12 Lenovo 100e Chromebook Gen 4 Hardware Maintenance Manual...
  • Page 13 PERIGO PERIGO PERIGO Chapter 1 Safety information...
  • Page 14 PERIGO PERIGO PERIGO PERIGO PERIGO Lenovo 100e Chromebook Gen 4 Hardware Maintenance Manual...
  • Page 15 DANGER DANGER DANGER DANGER Chapter 1 Safety information...
  • Page 16 DANGER DANGER DANGER DANGER VORSICHT Lenovo 100e Chromebook Gen 4 Hardware Maintenance Manual...
  • Page 17 VORSICHT VORSICHT VORSICHT VORSICHT Chapter 1 Safety information...
  • Page 18 VORSICHT VORSICHT VORSICHT Lenovo 100e Chromebook Gen 4 Hardware Maintenance Manual...
  • Page 19 Chapter 1 Safety information...
  • Page 20 Lenovo 100e Chromebook Gen 4 Hardware Maintenance Manual...
  • Page 21 Chapter 1 Safety information...
  • Page 22 Lenovo 100e Chromebook Gen 4 Hardware Maintenance Manual...
  • Page 23 Chapter 1 Safety information...
  • Page 24 Lenovo 100e Chromebook Gen 4 Hardware Maintenance Manual...
  • Page 25 Chapter 1 Safety information...
  • Page 26 Lenovo 100e Chromebook Gen 4 Hardware Maintenance Manual...

  • Page 27: Chapter 2. General Checkout

    • Scratched (cosmetic) parts • Distortion, deformation, or discoloration of the cosmetic parts • Plastic parts, latches, pins, or connectors that have been cracked or broken by excessive force • Damage caused by liquid spilled into the system © Copyright Lenovo 2024...

  • Page 28: Cru List

    • Check for obvious damage to a hard disk drive. If the spindle of a hard disk drive becomes noisy, the hard disk drive might have been dropped or subject to excessive force. CRU list Table 1. Model: Lenovo 100e Chromebook Gen 4 (Machine type: 83G8, 83G9) Type ac power adapter...

  • Page 29: Chapter 3. Create And Use A Usb Repair Shim

    We strongly recommend that only trained technicians install the motherboard and shim. Customers undertake self-repair at their own risk. If customer requests the Self Repair Shim, please call Lenovo Customer Support Center. Go to https:// for the latest phone numbers.
  • Page 30 Lenovo 100e Chromebook Gen 4 Hardware Maintenance Manual...

  • Page 31: Chapter 4. Identifying Frus (Crus)

    Chapter 4. Identifying FRUs (CRUs) Locate FRUs and CRUs The exploded illustrations help Lenovo service technicians identify FRUs or CRUs that they may need to replace when servicing a customer’s computer. Figure 1. System exploded view Table 2. FRU (CRU) categories...
  • Page 32 40–pin I/O board cable 14–pin I/O board cable Wi-Fi card Battery pack Lower case Speakers Wi-Fi card antennas Heat sink Touchpad cable Upper case with touchpad/clickpad Screw kit Power cord ac power adapter Lenovo 100e Chromebook Gen 4 Hardware Maintenance Manual...
  • Page 33 Figure 2. LCD exploded view Table 3. FRU (CRU) categories FRU (CRU) category LCD bezel LCD panel Note: Selected models are compatible with a touch LCD panel. Chapter 4 Identifying FRUs (CRUs)
  • Page 34 Table 3. FRU (CRU) categories (continued) Camera board EDP cable LCD cover Hinges Lenovo 100e Chromebook Gen 4 Hardware Maintenance Manual...

  • Page 35: Chapter 5. Removing A Fru Or Cru

    Chapter 5. Removing a FRU or CRU Service tools The following table lists tools for servicing Lenovo computers. Tools with a cross mark are needed for serving the product models as described by this publication. Prepare them before you service the product.

  • Page 36: Handling Thermal Interface Materials

    The table and figure below provide information on the type and quantity of thermal interface materials, as well as the specific area on the heat sink where these materials should be applied. Area Type Quantity 0.15 g, 16.03 mm × 10.7 mm × 0.2 mm Shin-Etsu X23–7783D Lenovo 100e Chromebook Gen 4 Hardware Maintenance Manual...

  • Page 37: Areas On The System Board Where Thermal Interface Materials Are Applied

    Figure 3. The area on the heat sink where thermal interface materials should be applied Areas on the system board where thermal interface materials are applied The following figure shows the areas on the system board where thermal interface materials are applied. Figure 4.
  • Page 38 Figure 6. Use the pry tool to pry up the top right corner of the keyboard and slide it to the left Step 4. Open the keyboard sockets and lift the keyboard. Lenovo 100e Chromebook Gen 4 Hardware Maintenance Manual...

  • Page 39: Install The Keyboard

    Figure 7. Open the keyboard sockets and lift the keyboard Step 5. Disconnect the keyboard cable. Figure 8. Disconnect the keyboard cable Note: Replacement keyboards are available in different languages and colors. Check the color and language type of the keyboard to be replaced and order an equivalent one. Install the keyboard Step 1.
  • Page 40 Figure 9. Connect the keyboard cable Step 2. Install the keyboard. Figure 10. Install the keyboard Step 3. Secure one screw. Lenovo 100e Chromebook Gen 4 Hardware Maintenance Manual...

  • Page 41: Remove The Lower Case

    Figure 11. Secure one screw Go to to look up the Lenovo part numbers of the following https://support.lenovo.com/partslookup replacement part: Keyboard Remove the lower case Make sure the computer has been shut down before servicing the computer. Step 1. Place the computer upside down on a flat surface.

  • Page 42: Remove The 14-Pin I/O Board Cable

    Attention: Use your fingernail to pull the connector to unplug it. Do not pull the cable. Figure 13. Remove the 14-pin I/O board cable Go to https://support.lenovo.com/partslookup to look up the Lenovo part numbers of the following replacement part: 14-pin I/O board cable Remove the 40-pin I/O board cable Make sure the following FRUs (or CRUs) have been removed.

  • Page 43: Remove The Battery Pack

    Figure 14. Remove the 40-pin I/O board cable Go to https://support.lenovo.com/partslookup to look up the Lenovo part numbers of the following replacement part: 40-pin I/O board cable Remove the battery pack Make sure the following FRUs (or CRUs) have been removed.

  • Page 44: Remove The Wi-Fi Card

    Screw specifications Number of screws M2 × L4 Go to https://support.lenovo.com/partslookup to look up the Lenovo part numbers of the following replacement part: Battery pack Remove the Wi-Fi card Make sure the following FRUs (or CRUs) have been removed. “Remove the lower case” on page 35 Step 1.

  • Page 45: Remove I/O Board Bracket

    Attention: Use your fingernail to pull the connector to unplug it. Do not pull the cable. Figure 17. Disconnect and remove the speakers Go to to look up the Lenovo part numbers of the following https://support.lenovo.com/partslookup replacement part: Speakers Remove I/O board bracket Make sure the following FRUs (or CRUs) have been removed.

  • Page 46: Remove The I/O Board

    Figure 18. Remove the I/O board bracket Number of screws Screw specifications M2 × L4 Go to to look up the Lenovo part numbers of the following https://support.lenovo.com/partslookup replacement part: I/O board bracket Remove the I/O board Make sure the following FRUs (or CRUs) have been removed.

  • Page 47: Remove The Type-C Bracket

    Figure 20. Remove two screws and the I/O board Screw specifications Number of screws M2 × L4 Go to to look up the Lenovo part numbers of the following https://support.lenovo.com/partslookup replacement part: I/O board Remove the Type-C bracket Make sure the following FRUs (or CRUs) have been removed.

  • Page 48: Remove The Touchpad Cable

    Figure 21. Remove the Type-C bracket Number of screws Screw specifications M2 × L4 Go to to look up the Lenovo part numbers of the following https://support.lenovo.com/partslookup replacement part: Type-C bracket Remove the touchpad cable Make sure the following FRUs (or CRUs) have been removed.

  • Page 49: Remove The System Board

    Figure 22. Disconnect and remove the touchpad cable Go to https://support.lenovo.com/partslookup to look up the Lenovo part numbers of the following replacement part: Touchpad cable Remove the system board Make sure the following FRUs (or CRUs) have been removed. “Remove the lower case” on page 35 “Remove the Wi-Fi card”...

  • Page 50: Remove The Heat Sink

    Figure 24. Remove two screws and the system board Screw specifications Number of screws M2 × L4 Go to to look up the Lenovo part numbers of the following https://support.lenovo.com/partslookup replacement part: System board Remove the heat sink Make sure the following FRUs (or CRUs) have been removed.

  • Page 51: Remove The Antennas

    Step 1. Loosen four screws in the alphabetic order, and then remove the heat sink. Figure 25. Remove the heat sink Go to to look up the Lenovo part numbers of the following https://support.lenovo.com/partslookup replacement parts: Heat sink Remove the antennas Make sure the following FRUs (or CRUs) have been removed.

  • Page 52: Remove The Lcd Module

    Figure 26. Remove the antennas Go to https://support.lenovo.com/partslookup to look up the Lenovo part numbers of the following replacement part: Antenna Remove the LCD module Make sure the following FRUs (CRUs) have been removed. “Remove the lower case” on page 35 Step 1.

  • Page 53: Remove The Upper Case With Touchpad/Clickpad

    Then, remove the LCD module. Figure 29. Remove the LCD module Go to https://support.lenovo.com/partslookup to look up the Lenovo part numbers of the following replacement part: LCD module Remove the upper case with touchpad/clickpad Make sure the following FRUs (CRUs) have been removed.

  • Page 54: Disassemble The Lcd Module

    “Remove the antennas” on page 45 “Remove the LCD module” on page 46 Go to https://support.lenovo.com/partslookup to look up the Lenovo part numbers of the following replacement part: Upper case with touchpad/clickpad Disassemble the LCD module Before disassembling the LCD module, make sure it has been detached from the upper case assembly.

  • Page 55: Remove The Lcd Panel

    Remove the LCD panel Make sure the following FRUs (CRUs) have been removed. “Remove the lower case” on page 35 “Remove the LCD module” on page 46 “Remove the LCD bezel” on page 48 Step 1. Pull out two pieces of the removable tape and remove four screws. Then, lift the LCD panel. Figure 31.

  • Page 56: Remove The Camera Board

    Go to to look up the Lenovo part numbers of the following https://support.lenovo.com/partslookup replacement part: LCD panel Remove the camera board Make sure the following FRUs (CRUs) have been removed. “Remove the lower case” on page 35 “Remove the LCD module” on page 46 “Remove the LCD bezel”...

  • Page 57: Remove The Hinges

    Disconnect and remove the EDP cable. Figure 35. Disconnect and remove the EDP cable Go to https://support.lenovo.com/partslookup to look up the Lenovo part numbers of the following replacement part: EDP cable Remove the hinges Make sure the following FRUs (CRUs) have been removed.
  • Page 58 Figure 37. Remove ten screws and the hinges Screw specifications Number of screws M2 × L2.5 M1.6 × L1.5 Go to to look up the Lenovo part numbers of the following https://support.lenovo.com/partslookup replacement part: Hinges Lenovo 100e Chromebook Gen 4 Hardware Maintenance Manual...

  • Page 59: Remove The Lcd Cover

    “Remove the camera board” on page 50 “Remove the EDP cable” on page 50 “Remove the hinges” on page 51 Go to https://support.lenovo.com/partslookup to look up the Lenovo part numbers of the following replacement part: LCD cover Chapter 5 Removing a FRU or CRU...
  • Page 60 Lenovo 100e Chromebook Gen 4 Hardware Maintenance Manual...

  • Page 61: Chapter 6. Label Locations

    20 mm x 10 mm South Africa Country label Vietnam (Energy Star Label) 10 mm x 9 mm / 35 mm x 10 US/CA 40 mm x 8 mm 37 mm x 14 mm Battery label © Copyright Lenovo 2024...
  • Page 62 Lenovo 100e Chromebook Gen 4 Hardware Maintenance Manual...

  • Page 63: Trademarks

    Trademarks LENOVO and the LENOVO logo are trademarks of Lenovo. All other trademarks are the property of their respective owners. © 2024 Lenovo.

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