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Lenovo 14M836 Hardware Maintenance Manual
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Lenovo 14M836 Hardware Maintenance Manual

Lenovo 14M836 Hardware Maintenance Manual

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IdeaPad 3 Chromebook (14", 6)
Hardware Maintenance Manual

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Summary of Contents for Lenovo 14M836

  • Page 1 IdeaPad 3 Chromebook (14″, 6) Hardware Maintenance Manual...
  • Page 2 First Edition (April 2021) © Copyright Lenovo 2021.

  • Page 3: Table Of Contents

    Trademarks ....xliii Use the USB repair shim ... Chapter 4. Idetifying FRUs (CRUs) . . 25 © Copyright Lenovo 2021...
  • Page 4 IdeaPad 3 Chromebook (14″, 6) 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 2021...
  • Page 6 IdeaPad 3 Chromebook (14″, 6) 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 2021...

  • 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

    Grounding requirements Electrical grounding of the computer is required for operator safety and correct system function. Proper grounding of the electrical outlet can be verified by a certified electrician. Safety notices (multilingual translations) The safety notices in this section are provided in the following languages: •...
  • Page 11 DANGER DANGER DANGER DANGER DANGER Chapter 1 Safety information...
  • Page 12 IdeaPad 3 Chromebook (14″, 6) Hardware Maintenance Manual...
  • Page 13 PERIGO PERIGO PERIGO Chapter 1 Safety information...
  • Page 14 PERIGO PERIGO PERIGO PERIGO PERIGO IdeaPad 3 Chromebook (14″, 6) Hardware Maintenance Manual...
  • Page 15 DANGER DANGER DANGER DANGER Chapter 1 Safety information...
  • Page 16 DANGER DANGER DANGER DANGER VORSICHT IdeaPad 3 Chromebook (14″, 6) Hardware Maintenance Manual...
  • Page 17 VORSICHT VORSICHT VORSICHT VORSICHT Chapter 1 Safety information...
  • Page 18 VORSICHT VORSICHT VORSICHT IdeaPad 3 Chromebook (14″, 6) Hardware Maintenance Manual...
  • Page 19 Chapter 1 Safety information...
  • Page 20 IdeaPad 3 Chromebook (14″, 6) Hardware Maintenance Manual...
  • Page 21 Chapter 1 Safety information...
  • Page 22 IdeaPad 3 Chromebook (14″, 6) Hardware Maintenance Manual...
  • Page 23 Chapter 1 Safety information...
  • Page 24 IdeaPad 3 Chromebook (14″, 6) Hardware Maintenance Manual...
  • Page 25 Chapter 1 Safety information...
  • Page 26 IdeaPad 3 Chromebook (14″, 6) 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 2021...

  • 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: IdeaPad 3 Chrome 14M836 (Machine type: 82KN) Type ac power adapter...

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

    Step 2. Download the image file of the repair shim from . A Lenovo service https://support.lenovo.com credential is required to download the image file. Note: Make sure to download the latest version of the image file. A shim created with an earlier version of the image file might cause the repair process to fail.

  • Page 30: Use The Usb Repair Shim

    Use the USB repair shim Step 1. Press the power button together with esc and . The Chrome operating system recovery screen is displayed. Follow the on-screen instructions to enter the developer mode. Step 2. Remove the base cover assembly, disconnect the built-in battery from the system board, and then attach the ac power adapter to the Chromebook.

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

    Chapter 4. Idetifying 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. IdeaPad 3 Chrome 14M836 exploded view Table 3. FRU (CRU) categories...
  • Page 32 Table 3. FRU (CRU) categories (continued) Type-c bracket Thermal pad Figure 2. IdeaPad 3 Chrome 14M836 LCD exploded view Table 4. FRU (CRU) categories FRU (CRU) category Hinge cover LCD bezel EDP cable Hinges LCD cover Removable tapes Camera Microphone rubbers...

  • Page 33: 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 34: Remove The Lower Case

    3. Follow the correct sequence in the steps for removing a FRU, as shown in the illustrations by the numbers in square callouts. 4. When removing a FRU, move it in the direction as shown by the arrow in the illustration. 5.

  • Page 35: Remove The Speakers

    Screw specifications Number of screws M2 x L5.5 Go to https://support.lenovo.com/partslookup to look up the Lenovo part numbers of the following replacement part: Lower case Remove the speakers Make sure the following FRUs (CRUs) have been removed. “Remove the lower case” on page 28 Step 1.

  • Page 36: Remove The Antenna

    Figure 5. Remove the speakers Go to https://support.lenovo.com/partslookup to look up the Lenovo part numbers of the following replacement parts: Speakers Remove the antenna Make sure the following FRUs (CRUs) have been removed. “Remove the lower case” on page 28 “Remove the speakers”...

  • Page 37: Remove The Type-C Bracket

    Go to to look up the Lenovo part numbers of the following https://support.lenovo.com/partslookup replacement parts: Antenna Remove the type-c bracket Make sure the following FRUs (or CRUs) have been removed. “Remove the lower case” on page 28 Step 1. Disconnect the battery pack cable from the system board and then remove two screws Attention: Use your fingernail to pull the connector to unplug it.

  • Page 38: Remove The System Board

    Figure 8. Remove the type-c bracket Go to https://support.lenovo.com/partslookup to look up the Lenovo part numbers of the following replacement parts: Type-c bracket Remove the system board Make sure the following FRUs (or CRUs) have been removed. “Remove the lower case” on page 28 “Remove the type-c bracket”...

  • Page 39: Remove The Thermal Pad

    Figure 10. Remove six screws and remove the system board Screw specifications Number of screws M2 x 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 thermal pad Make sure the following FRUs (or CRUs) have been removed.

  • Page 40: Remove The Upper Case

    Figure 11. Remove the thermal pad Go to https://support.lenovo.com/partslookup to look up the Lenovo part numbers of the following replacement part: Thermal pad Remove the upper case Make sure the following FRUs (CRUs) have been removed. “Remove the lower case” on page 28 Step 1.
  • Page 41 Attention: When disassembling the upper case, handle the LCD module and upper case with care. Figure 14. Remove the upper case Go to https://support.lenovo.com/partslookup to look up the Lenovo part numbers of the following replacement part: Upper case Chapter 5...

  • Page 42: Remove The Hinge Cover

    “Remove the upper case ” on page 34 Step 1. Remove the hinge cover. Figure 15. Remove the hinge cover Go to to look up the Lenovo part numbers of the following https://support.lenovo.com/partslookup replacement part: Hinge cover Remove the LCD bezel Make sure the following FRUs (CRUs) have been removed.

  • Page 43: Remove The Lcd Module

    Attention: Do not pull the LCD bezel from the outer sides of the LCD bezel, otherwise the hooks may be damaged. The lower side of the LCD bezel is fixed to the LCD panel with adhesive tape. Detach with care. Go to to look up the Lenovo part numbers of the following https://support.lenovo.com/partslookup replacement part: LCD bezel Remove the LCD module Make sure the following FRUs (CRUs) have been removed.
  • Page 44 Figure 17. Remove the removable tapes Step 2. Turn the LCD module. Figure 18. Turn the LCD module Step 3. Disconnect the EDP cable and remove the LCD module. IdeaPad 3 Chromebook (14″, 6) Hardware Maintenance Manual...

  • Page 45: Remove The Hinge

    Figure 19. Disconnect the EDP cable and 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 hinge Make sure the following FRUs (CRUs) have been removed.

  • Page 46: Remove The Microphone Rubbers

    Step 2. Remove the two hinges. Figure 21. Remove the two hinges Go to https://support.lenovo.com/partslookup to look up the Lenovo part numbers of the following replacement parts: Hinge Remove the microphone rubbers Make sure the following FRUs (CRUs) have been removed.
  • Page 47 “Remove the LCD module” on page 37 Step 1. Remove the microphone rubbers. Figure 22. Remove the microphone rubbers Go to https://support.lenovo.com/partslookup to look up the Lenovo part numbers of the following replacement parts: Microphone rubber Chapter 5 Removing a FRU or CRU...
  • Page 48 IdeaPad 3 Chromebook (14″, 6) Hardware Maintenance Manual...

  • Page 49: Trademarks

    Trademarks LENOVO and the LENOVO logo are trademarks of Lenovo. All other trademarks are the property of their respective owners. © 2021 Lenovo.

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