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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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Lenovo 300e Yoga 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 and Lenovo 300e Yoga Chromebook Gen 4 Hardware Maintenance Manual...
  • Page 2 First Edition (January 2023) © Copyright Lenovo 2023.

  • Page 3: Table Of Contents

    Remove the LCD panel and camera board (for CRU ....31 Lenovo 300e Yoga Chromebook Gen 4) ..Remove the camera board (for Lenovo 100e Service tools .
  • Page 4 Lenovo 100e Chromebook Gen 4 and Lenovo 300e Yoga 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 2023...
  • Page 6 Lenovo 100e Chromebook Gen 4 and Lenovo 300e Yoga 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 2023...

  • 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

    • English • Arabic • Brazilian Portuguese • French • German • Hebrew • Japanese • Korean • Spanish • Traditional Chinese DANGER DANGER DANGER Lenovo 100e Chromebook Gen 4 and Lenovo 300e Yoga Chromebook Gen 4 Hardware Maintenance Manual...
  • Page 11 DANGER DANGER DANGER DANGER DANGER Chapter 1 Safety information...
  • Page 12 Lenovo 100e Chromebook Gen 4 and Lenovo 300e Yoga 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 and Lenovo 300e Yoga 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 and Lenovo 300e Yoga 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 and Lenovo 300e Yoga Chromebook Gen 4 Hardware Maintenance Manual...
  • Page 19 Chapter 1 Safety information...
  • Page 20 Lenovo 100e Chromebook Gen 4 and Lenovo 300e Yoga Chromebook Gen 4 Hardware Maintenance Manual...
  • Page 21 Chapter 1 Safety information...
  • Page 22 Lenovo 100e Chromebook Gen 4 and Lenovo 300e Yoga Chromebook Gen 4 Hardware Maintenance Manual...
  • Page 23 Chapter 1 Safety information...
  • Page 24 Lenovo 100e Chromebook Gen 4 and Lenovo 300e Yoga Chromebook Gen 4 Hardware Maintenance Manual...
  • Page 25 Chapter 1 Safety information...
  • Page 26 Lenovo 100e Chromebook Gen 4 and Lenovo 300e Yoga 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 2023...

  • Page 28: Cru List

    Table 2. Model: Lenovo 300e Yoga Chromebook Gen 4 (Machine type: 82W2, 82W3) Type ac power adapter self-service power cord self-service electronic pen* self-service pen dummy* self-service keyboard optional-service lower case optional-service * for selected models Lenovo 100e Chromebook Gen 4 and Lenovo 300e Yoga Chromebook Gen 4 Hardware Maintenance Manual...

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

    When you use the USB repair shim to diagnose problems, the Chromebook enters the factory-test-image environment and runs through factory test items. Note: For the latest and detailed shim instruction, you can refer to the RMA Shim SOP from “Drivers & Software” on with Lenovo service credential. https://support.lenovo.com © Copyright Lenovo 2023...
  • Page 30 Lenovo 100e Chromebook Gen 4 and Lenovo 300e Yoga 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 © Copyright Lenovo 2023...
  • Page 32 Golden tape for keyboard connector Conductive tapes for LCD cover and hinge WFC camera CU foil* Screw kit ac power adapter Power cord * for selected models Lenovo 100e Chromebook Gen 4 and Lenovo 300e Yoga Chromebook Gen 4 Hardware Maintenance Manual...
  • Page 33 Figure 2. Lenovo 100e Chromebook Gen 4 LCD exploded view Table 4. FRU (CRU) categories FRU (CRU) category LCD bezel LCD panel Camera board Chapter 4 Identifying FRUs (CRUs)
  • Page 34 Table 4. FRU (CRU) categories (continued) Wi-Fi antennas* WWAN antennas* EDP cable LCD cover Hinges * for selected models Figure 3. Lenovo 300e Yoga Chromebook Gen 4 LCD exploded view Lenovo 100e Chromebook Gen 4 and Lenovo 300e Yoga Chromebook Gen 4 Hardware Maintenance Manual...
  • Page 35 Table 5. FRU (CRU) categories FRU (CRU) category LCD panel LCD bezel Camera board Wi-Fi antennas EDP cable LCD cover Hinges G sensor Screw mylar for LCD bezel Camera board conductive tape Chapter 4 Identifying FRUs (CRUs)
  • Page 36 Lenovo 100e Chromebook Gen 4 and Lenovo 300e Yoga Chromebook Gen 4 Hardware Maintenance Manual...

  • Page 37: 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 38: Remove The Electronic Pen (For Lenovo 300E Yoga Chromebook Gen 4) (For Selected Models)

    Remove the electronic pen. Figure 4. Remove the electronic pen Go to https://support.lenovo.com/partslookup to look up the Lenovo part numbers of the following replacement part: Lenovo 100e Chromebook Gen 4 and Lenovo 300e Yoga Chromebook Gen 4 Hardware Maintenance Manual...

  • Page 39: Remove The Dummy Pen Cap (For Lenovo 300E Yoga Chromebook Gen 4) (For Selected Models)

    Electronic pen Remove the dummy pen cap (for Lenovo 300e Yoga Chromebook Gen 4) (for selected models) Step 1. Place the Chromebook upside down on a flat surface. Step 2. Remove the dummy pen cap. Figure 5. Remove the dummy pen cap...

  • Page 40: Remove The Battery Pack

    Attention: Use your fingernail to pull the connector to unplug it. Do not pull the cable. Step 2. Remove four screws. Then remove the battery pack. Lenovo 100e Chromebook Gen 4 and Lenovo 300e Yoga Chromebook Gen 4 Hardware Maintenance Manual...

  • Page 41: Remove The Keyboard

    Figure 7. Remove screws and the battery pack Screw specifications Number of screws M2 × L3.5 Go to to look up the Lenovo part numbers of the following https://support.lenovo.com/partslookup replacement part: Battery pack Remove the keyboard Step 1. Turn off the Chromebook. Pry the latches and remove the keyboard.

  • Page 42: Remove The Pen Board Cable (For Lenovo 300E Yoga Chromebook Gen 4)

    “Remove the lower case” on page 33 “Remove the battery pack” on page 34 Step 1. Disconnect the electronic pen cable. Figure 10. Disconnect the electronic pen cable Lenovo 100e Chromebook Gen 4 and Lenovo 300e Yoga Chromebook Gen 4 Hardware Maintenance Manual...

  • Page 43: Remove The Speakers

    Step 2. Remove the electronic pen cable. Figure 11. Remove the electronic pen cable Go to to look up the Lenovo part numbers of the following https://support.lenovo.com/partslookup replacement part: Electronic pen cable Remove the speakers Make sure the following FRUs (CRUs) have been removed.

  • Page 44: Remove The I/O Board Bracket (For Lenovo 100E Chromebook Gen 4)

    Make sure the following FRUs (or CRUs) have been removed. “Remove the lower case” on page 33 Step 1. Disconnect the battery pack cable from the system board. Lenovo 100e Chromebook Gen 4 and Lenovo 300e Yoga Chromebook Gen 4 Hardware Maintenance Manual...
  • Page 45 Figure 15. Remove the I/O board bracket Screw specifications Number of screws M2 × L3.5 Go to https://support.lenovo.com/partslookup to look up the Lenovo part numbers of the following replacement parts: I/O board bracket Chapter 5 Removing a FRU or CRU...

  • Page 46: Remove The I/O Board Bracket (For Lenovo 300E Yoga Chromebook Gen 4)

    Figure 16. Disconnect the battery cable and remove the AL foil Step 2. Remove three screws. Then, remove the I/O board bracket. Figure 17. Remove screws and the I/O board bracket Lenovo 100e Chromebook Gen 4 and Lenovo 300e Yoga Chromebook Gen 4 Hardware Maintenance Manual...

  • Page 47: Remove The I/O Board

    Make sure the following FRUs (or CRUs) have been removed. “Remove the lower case” on page 33 “Remove the I/O board bracket (for Lenovo 100e Chromebook Gen 4)” on page 38 “Remove the I/O board bracket (for Lenovo 300e Yoga Chromebook Gen 4)” on page 40 Step 1.

  • Page 48: Remove The Wfc Camera (For Lenovo 300E Yoga Chromebook Gen 4) (For Selected Models)

    Disconnect the battery pack cable and the WFC camera cable from the system board. Then, remove the WFC camera module. Attention: Use your fingernail to pull the connector to unplug it. Do not pull the cable. Lenovo 100e Chromebook Gen 4 and Lenovo 300e Yoga Chromebook Gen 4 Hardware Maintenance Manual...
  • Page 49 Figure 20. Disconnect cables and remove the WFC camera module Step 2. Remove the WFC camera cable. Figure 21. Remove the WFC camera cable Step 3. Remove the WFC camera CU foil. Chapter 5 Removing a FRU or CRU...

  • Page 50: Remove The Type-C Bracket (For Lenovo 100E Chromebook Gen 4)

    Step 1. Disconnect the battery cable from the system board. Attention: Use your fingernail to pull the connector to unplug it. Do not pull the cable. Lenovo 100e Chromebook Gen 4 and Lenovo 300e Yoga Chromebook Gen 4 Hardware Maintenance Manual...

  • Page 51: Remove The Type-C Bracket (For Lenovo 300E Yoga Chromebook Gen 4)

    Lenovo part numbers of the following https://support.lenovo.com/partslookup replacement parts: Type-C bracket Remove the type-C bracket (for Lenovo 300e Yoga Chromebook Gen 4) Make sure the following FRUs (or CRUs) have been removed. Chapter 5 Removing a FRU or CRU...
  • Page 52 Figure 26. Remove three screws and the type-C bracket Screw specifications Number of screws M2 × L3.5 Go to to look up the Lenovo part numbers of the following https://support.lenovo.com/partslookup replacement parts: Lenovo 100e Chromebook Gen 4 and Lenovo 300e Yoga Chromebook Gen 4 Hardware Maintenance Manual...

  • Page 53: Remove The Touchpad Cable

    Disconnect the touchpad cable from the system board. Then, remove the touchpad cable. Figure 27. 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 Wi-Fi card Make sure the following FRUs (or CRUs) have been removed.
  • Page 54 Number of screws M1.6 × L1.7 Go to to look up the Lenovo part numbers of the following https://support.lenovo.com/partslookup replacement part: Wi-Fi card Wi-Fi card PMMA tape Lenovo 100e Chromebook Gen 4 and Lenovo 300e Yoga Chromebook Gen 4 Hardware Maintenance Manual...

  • Page 55: Remove The Wwan Card (For Lenovo 100E Chromebook Gen 4 Wlan + Wwan Models)

    Remove the WWAN card (for Lenovo 100e Chromebook Gen 4 WLAN + WWAN models) Make sure the following FRUs (or CRUs) have been removed. “Remove the lower case” on page 33 Step 1. Disconnect the battery pack cable from the system board. Then, remove the WWAN card mylar tape.

  • Page 56: Remove The Wwan Card Cable (For Lenovo 100E Chromebook Gen 4 Wlan + Wwan Models)

    Attention: Use your fingernail to pull the connector to unplug it. Do not pull the cable. Figure 32. Disconnect the battery pack cable and remove the mylar tape Step 2. Disconnect the WWAN antennas. Then, remove the WWAN antennas. Lenovo 100e Chromebook Gen 4 and Lenovo 300e Yoga Chromebook Gen 4 Hardware Maintenance Manual...

  • Page 57: Remove The Wi-Fi Antennas (For Lenovo 100E Chromebook Gen 4 Wlan + Wwan Models)

    Lenovo part numbers of the following https://support.lenovo.com/partslookup replacement part: WWAN card cable Remove the Wi-Fi antennas (for Lenovo 100e Chromebook Gen 4 WLAN + WWAN models) Make sure the following FRUs (or CRUs) have been removed. “Remove the lower case” on page 33 “Remove the battery pack”...

  • Page 58: Remove The System Board (For Lenovo 100E Chromebook Gen 4)

    AL foil and mylar sheet for Wi-Fi antenna cable Remove the system board (for Lenovo 100e Chromebook Gen 4) Make sure the following FRUs (or CRUs) have been removed. Lenovo 100e Chromebook Gen 4 and Lenovo 300e Yoga Chromebook Gen 4 Hardware Maintenance Manual...
  • Page 59 “Remove the type-C bracket (for Lenovo 100e Chromebook Gen 4)” on page 44 “Remove the WWAN card (for Lenovo 100e Chromebook Gen 4 WLAN + WWAN models)” on page 49 “Remove the WWAN card cable (for Lenovo 100e Chromebook Gen 4 WLAN + WWAN models)” on page Step 1.

  • Page 60: Remove The System Board (For Lenovo 300E Yoga Chromebook Gen 4)

    Disconnect the battery pack cable. Then, disconnect cables connected to the system board. Figure 39. Disconnect cables Step 2. Remove two screws and remove the system board. Lenovo 100e Chromebook Gen 4 and Lenovo 300e Yoga Chromebook Gen 4 Hardware Maintenance Manual...

  • Page 61: Remove The Lcd Module

    Figure 40. Remove two screws and the system board Screw specifications Number of screws M2 × L3.5 Go to to look up the Lenovo part numbers of the following https://support.lenovo.com/partslookup replacement part: System board Remove the LCD module Make sure the following FRUs (CRUs) have been removed.
  • Page 62 Remove the Wi-Fi card PMMA tape. Then, disconnect the Wi-Fi antennas and the EDP cable. Figure 42. Disconnect antennas and cables Step 3. Remove six screws and open two hinges. Lenovo 100e Chromebook Gen 4 and Lenovo 300e Yoga Chromebook Gen 4 Hardware Maintenance Manual...
  • Page 63 Rotate the LCD module to an angle of more than 90 degrees and place the Chromebook on a flat surface as shown. Then, remove the LCD module. Figure 44. Remove the LCD module Go to to look up the Lenovo part numbers of the following https://support.lenovo.com/partslookup replacement part: LCD module...

  • Page 64: Remove The Upper Case

    The lower side of the LCD bezel is fixed to the LCD panel with adhesive tape. Detach with care. Go to https://support.lenovo.com/partslookup to look up the Lenovo part numbers of the following replacement part: Lenovo 100e Chromebook Gen 4 and Lenovo 300e Yoga Chromebook Gen 4 Hardware Maintenance Manual...

  • Page 65: Remove The Lcd Bezel (For Lenovo 300E Yoga Chromebook Gen 4)

    LCD bezel Remove the LCD bezel (for Lenovo 300e Yoga Chromebook Gen 4) Step 1. Remove the LCD bezel screw mylar. Figure 46. Remove the LCD bezel screw mylar Step 2. Remove two screws. Then, remove the LCD bezel. Attention: Do not pull the LCD bezel from the outer sides of the LCD bezel, otherwise the hooks may be damaged.

  • Page 66: Remove The Lcd Panel (For Lenovo 100E Chromebook Gen 4)

    Step 2. Check the back side of the LCD panel for the LCD connector and remove the LCD cable conductive tape. Then, unplug the LCD cable. Lenovo 100e Chromebook Gen 4 and Lenovo 300e Yoga Chromebook Gen 4 Hardware Maintenance Manual...

  • Page 67: Remove The Lcd Panel And Camera Board (For Lenovo 300E Yoga Chromebook Gen 4)

    Chromebook Gen 4) Make sure the following FRUs (or CRUs) have been removed. “Remove the LCD bezel (for Lenovo 100e Chromebook Gen 4)” on page 58 Step 1. Remove two screws. Then, with the bottom edge as an axis, lift up the top edge of the LCD panel.
  • Page 68 Remove the camera board conductive tape and LCD cable conductive tape. Figure 51. Remove the camera board conductive tape and LCD cable conductive tape Step 3. Remove the camera board. Lenovo 100e Chromebook Gen 4 and Lenovo 300e Yoga Chromebook Gen 4 Hardware Maintenance Manual...

  • Page 69: Remove The Camera Board (For Lenovo 100E Chromebook Gen 4)

    Lenovo part numbers of the following replacement part: Camera board Camera board conductive tape LCD panel Remove the camera board (for Lenovo 100e Chromebook Gen 4) Make sure the following FRUs (or CRUs) have been removed. Chapter 5 Removing a FRU or CRU...

  • Page 70: Remove The Hinges (For Lenovo 100E Chromebook Gen 4)

    Make sure the following FRUs (or CRUs) have been removed. “Remove the LCD panel (for Lenovo 100e Chromebook Gen 4)” on page 60 Step 1. Remove ten screws. Then, remove two hinges. Lenovo 100e Chromebook Gen 4 and Lenovo 300e Yoga Chromebook Gen 4 Hardware Maintenance Manual...

  • Page 71: Remove The Edp Cable (For Lenovo 100E Chromebook Gen 4)

    Remove the EDP cable (for Lenovo 100e Chromebook Gen 4) Make sure the following FRUs (or CRUs) have been removed. “Remove the LCD panel (for Lenovo 100e Chromebook Gen 4)” on page 60 “Remove the hinges (for Lenovo 100e Chromebook Gen 4)” on page 64 Step 1.

  • Page 72: Remove The Hinges And Edp Cable (For Lenovo 300E Yoga Chromebook Gen 4)

    Remove the hinges and EDP cable (for Lenovo 300e Yoga Chromebook Gen 4) Make sure the following FRUs (or CRUs) have been removed. “Remove the LCD panel and camera board (for Lenovo 300e Yoga Chromebook Gen 4)” on page 61 Step 1. Remove eight screws. Then, remove two hinges.

  • Page 73: Remove The Wwan Antennas (For Lenovo 100E Chromebook Gen 4 Wlan + Wwan Models)

    WLAN + WWAN models) Make sure the following FRUs (or CRUs) have been removed. “Remove the LCD panel (for Lenovo 100e Chromebook Gen 4)” on page 60 “Remove the hinges (for Lenovo 100e Chromebook Gen 4)” on page 64 Step 1.

  • Page 74: Remove The Wi-Fi Antennas (For Lenovo 100E Chromebook Gen 4 Wlan Models)

    Remove the Wi-Fi antennas (for Lenovo 100e Chromebook Gen 4 WLAN models) Make sure the following FRUs (or CRUs) have been removed. “Remove the LCD panel (for Lenovo 100e Chromebook Gen 4)” on page 60 Lenovo 100e Chromebook Gen 4 and Lenovo 300e Yoga Chromebook Gen 4 Hardware Maintenance Manual...

  • Page 75: Remove The Hinges (For Lenovo 100E Chromebook Gen 4)

    “Remove the hinges (for Lenovo 100e Chromebook Gen 4)” on page 64 Step 1. Remove the Wi-Fi antenna tapes. Figure 61. Remove the Wi-Fi antenna tapes Step 2. Remove the Wi-Fi antennas. Figure 62. Remove the Wi-Fi antennas Go to to look up the Lenovo part numbers of the following https://support.lenovo.com/partslookup...

  • Page 76: Remove The Wi-Fi Antennas (For Lenovo 300E Yoga Chromebook Gen 4)

    Make sure the following FRUs (or CRUs) have been removed. “Remove the LCD panel and camera board (for Lenovo 300e Yoga Chromebook Gen 4)” on page 61 “Remove the hinges and EDP cable (for Lenovo 300e Yoga Chromebook Gen 4)” on page 66 Step 1.

  • Page 77: Remove The G Sensor (For Lenovo 300E Yoga Chromebook Gen 4)

    Remove the G sensor (for Lenovo 300e Yoga Chromebook Gen 4) Make sure the following FRUs (or CRUs) have been removed. “Remove the LCD panel and camera board (for Lenovo 300e Yoga Chromebook Gen 4)” on page 61 Step 1.
  • Page 78 Lenovo 100e Chromebook Gen 4 and Lenovo 300e Yoga Chromebook Gen 4 Hardware Maintenance Manual...

  • Page 79: Appendix A. Label Location

    Table 7. All base cover labels Label Label description Applied country/region Label dimensions Rating label 65.5 mm x 23.5 mm Country label Asset tag ≤51.8 mm x 26.4 mm Asset tag ≥51.8 mm x 26.4 mm © Copyright Lenovo 2023...
  • Page 80 Lenovo 100e Chromebook Gen 4 and Lenovo 300e Yoga Chromebook Gen 4 Hardware Maintenance Manual...

  • Page 81: Trademarks

    Trademarks LENOVO and the LENOVO logo are trademarks of Lenovo. All other trademarks are the property of their respective owners. © 2023 Lenovo.

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