Lenovo IdeaPad Flex 5i Chromebook Plus Hardware Maintenance Manual
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Lenovo IdeaPad Flex 5i Chromebook Plus Hardware Maintenance Manual

Lenovo IdeaPad Flex 5i Chromebook Plus Hardware Maintenance Manual

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IdeaPad Flex 5i Chromebook Plus (14", 7) and
Lenovo Flex 5i Chromebook Plus 14
Hardware Maintenance Manual

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Summary of Contents for Lenovo IdeaPad Flex 5i Chromebook Plus

  • Page 1 IdeaPad Flex 5i Chromebook Plus (14″, 7) and Lenovo Flex 5i Chromebook Plus 14 Hardware Maintenance Manual...
  • Page 2 First Edition (April 2022) © Copyright Lenovo 2022.

  • Page 3: Table Of Contents

    Trademarks ....lvii Remove the touch pad cable..Remove the heat sink ... . © Copyright Lenovo 2022...
  • Page 4 IdeaPad Flex 5i Chromebook (14″, 7) and Lenovo Flex 5i Chromebook 14″ 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 2022...
  • Page 6 IdeaPad Flex 5i Chromebook (14″, 7) and Lenovo Flex 5i Chromebook 14″ 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 2022...

  • 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 IdeaPad Flex 5i Chromebook (14″, 7) and Lenovo Flex 5i Chromebook 14″ Hardware Maintenance Manual...
  • Page 11 DANGER DANGER DANGER DANGER DANGER Chapter 1 Safety information...
  • Page 12 IdeaPad Flex 5i Chromebook (14″, 7) and Lenovo Flex 5i Chromebook 14″ Hardware Maintenance Manual...
  • Page 13 PERIGO PERIGO PERIGO Chapter 1 Safety information...
  • Page 14 PERIGO PERIGO PERIGO PERIGO PERIGO IdeaPad Flex 5i Chromebook (14″, 7) and Lenovo Flex 5i Chromebook 14″ Hardware Maintenance Manual...
  • Page 15 DANGER DANGER DANGER DANGER Chapter 1 Safety information...
  • Page 16 DANGER DANGER DANGER DANGER VORSICHT IdeaPad Flex 5i Chromebook (14″, 7) and Lenovo Flex 5i Chromebook 14″ Hardware Maintenance Manual...
  • Page 17 VORSICHT VORSICHT VORSICHT VORSICHT Chapter 1 Safety information...
  • Page 18 VORSICHT VORSICHT VORSICHT IdeaPad Flex 5i Chromebook (14″, 7) and Lenovo Flex 5i Chromebook 14″ Hardware Maintenance Manual...
  • Page 19 Chapter 1 Safety information...
  • Page 20 IdeaPad Flex 5i Chromebook (14″, 7) and Lenovo Flex 5i Chromebook 14″ Hardware Maintenance Manual...
  • Page 21 Chapter 1 Safety information...
  • Page 22 IdeaPad Flex 5i Chromebook (14″, 7) and Lenovo Flex 5i Chromebook 14″ Hardware Maintenance Manual...
  • Page 23 Chapter 1 Safety information...
  • Page 24 IdeaPad Flex 5i Chromebook (14″, 7) and Lenovo Flex 5i Chromebook 14″ Hardware Maintenance Manual...
  • Page 25 Chapter 1 Safety information...
  • Page 26 IdeaPad Flex 5i Chromebook (14″, 7) and Lenovo Flex 5i Chromebook 14″ 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 2022...

  • Page 28: Cru List

    CRU list Table 1. Model: IP Flex 5 Chrome 14IAU7 (Machine type: 83EK) Type ac power adapter self-service power cord self-service IdeaPad Flex 5i Chromebook (14″, 7) and Lenovo Flex 5i Chromebook 14″ Hardware Maintenance Manual...

  • Page 29: Chapter 3. Identifying Frus (Crus)

    Chapter 3. 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. Exploded view Table 2. FRU (CRU) categories...
  • Page 30 Battery pack I/O board cables I/O board System fan Heat sink Touch pad cable Power cord ac power adapter Screw kit * for selected models IdeaPad Flex 5i Chromebook (14″, 7) and Lenovo Flex 5i Chromebook 14″ Hardware Maintenance Manual...
  • Page 31 Figure 2. Exploded view of the LCD unit Table 3. FRU (CRU) categories FRU (CRU) category Microphone rubbers Camera board Chapter 3 Identifying FRUs (CRUs)
  • Page 32 EDP cable (for models without HPS) LCD cover Removable tapes EDP cable (for models with HPS) Hinges Hinge rubbers Strip cover LCD panel * for selected models IdeaPad Flex 5i Chromebook (14″, 7) and Lenovo Flex 5i Chromebook 14″ Hardware Maintenance Manual...

  • Page 33: Chapter 4. Removing A Fru Or Cru

    Chapter 4. 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

    Make sure the computer has been shut down before servicing the computer. Step 1. Place the computer upside down on a flat surface. Step 2. Remove nine screws. Figure 3. Remove nine screws IdeaPad Flex 5i Chromebook (14″, 7) and Lenovo Flex 5i Chromebook 14″ Hardware Maintenance Manual...

  • Page 35: Remove The Battery Pack

    Pry up the latches and then remove the lower case. Figure 4. Pry up the latches and remove the lower case Go to https://support.lenovo.com/partslookup to look up the Lenovo part numbers of the following replacement part: Lower case Remove the battery pack Make sure the following FRUs (or CRUs) have been removed.

  • Page 36: Remove The Solid-State Drive

    Disconnect the battery pack cable from the system board. Then, remove one screw. Attention: Use your fingernail to pull the connector to unplug it. Do not pull the cable. IdeaPad Flex 5i Chromebook (14″, 7) and Lenovo Flex 5i Chromebook 14″ Hardware Maintenance Manual...

  • Page 37: Remove The Touch Pad Cable

    Remove the solid-state drive by pulling it away from the slot. Figure 7. Remove the solid-state drive Go to https://support.lenovo.com/partslookup to look up the Lenovo part numbers of the following replacement part: Solid-state drive Remove the touch pad cable Make sure the following FRUs (or CRUs) have been removed.
  • Page 38 Figure 9. Peel back the keyboard cable Step 3. Disconnect the touch pad cable connectors from the system board and the touch pad. Then, remove the touch pad cable. IdeaPad Flex 5i Chromebook (14″, 7) and Lenovo Flex 5i Chromebook 14″ Hardware Maintenance Manual...

  • Page 39: Remove The Heat Sink

    Figure 10. Disconnect and remove the touch pad cable Go to to look up the Lenovo part numbers of the following https://support.lenovo.com/partslookup replacement part: Touch pad cable Remove the heat sink Make sure the following FRUs (or CRUs) have been removed.

  • Page 40: Remove The System Fan

    Disconnect the battery pack cable from the system board. Then, peel off the tape. Attention: Use your fingernail to pull the connector to unplug it. Do not pull the cable. IdeaPad Flex 5i Chromebook (14″, 7) and Lenovo Flex 5i Chromebook 14″ Hardware Maintenance Manual...
  • Page 41 Figure 13. Disconnect the battery pack cable and peel off the tape Step 2. Disconnect the antenna cables from the Wi-Fi card. Disconnect the system fan cable and I/O board cable from the system board. Then, remove all the cables from the fan hooks. Figure 14.

  • Page 42: Remove The I/O Board Cables

    “Remove the lower case” on page 28 Step 1. Disconnect the battery pack cable from the system board. Disconnect the antenna cables from the Wi-Fi card. Then, remove the antenna cables. IdeaPad Flex 5i Chromebook (14″, 7) and Lenovo Flex 5i Chromebook 14″ Hardware Maintenance Manual...

  • Page 43: Remove The I/O Board

    Step 2. Disconnect and remove the I/O board cables. Figure 17. Disconnect and remove the I/O board cables Go to to look up the Lenovo part numbers of the following https://support.lenovo.com/partslookup replacement parts: I/O board cables Remove the I/O board Make sure the following FRUs (or CRUs) have been removed.

  • Page 44: Remove The Wi-Fi Card

    Lenovo part numbers of the following https://support.lenovo.com/partslookup replacement part: I/O board Remove the Wi-Fi card Make sure the following FRUs (or CRUs) have been removed. IdeaPad Flex 5i Chromebook (14″, 7) and Lenovo Flex 5i Chromebook 14″ Hardware Maintenance Manual...
  • Page 45 Screw specifications M2 x L2 Step 2. Remove the Wi-Fi card. Figure 21. Remove the Wi-Fi card Go to to look up the Lenovo part numbers of the following https://support.lenovo.com/partslookup replacement part: Wi-Fi card Chapter 4 Removing a FRU or CRU...

  • Page 46: Remove The Mcu Cable (For Selected Models)

    “Remove the battery pack” on page 29 Step 1. Disconnect the MCU cable and fingerprint reader cable from the MCU board. Then remove the MCU board. IdeaPad Flex 5i Chromebook (14″, 7) and Lenovo Flex 5i Chromebook 14″ Hardware Maintenance Manual...

  • Page 47: Remove The Fingerprint Reader Board, Bracket And Cable (For Selected Models)

    Figure 23. Disconnect cables and remove the MCU board Go to to look up the Lenovo part numbers of the following https://support.lenovo.com/partslookup replacement part: MCU board Remove the fingerprint reader board, bracket and cable (for selected models) Make sure the following FRUs (or CRUs) have been removed.
  • Page 48 Figure 26. Disconnect the cable and remove the fingerprint reader board Step 4. Disconnect the fingerprint reader cable from the MCU board and remove the fingerprint reader cable. IdeaPad Flex 5i Chromebook (14″, 7) and Lenovo Flex 5i Chromebook 14″ Hardware Maintenance Manual...

  • Page 49: Remove The System Board

    Figure 27. Disconnect and remove the fingerprint reader cable Go to to look up the Lenovo part numbers of the following https://support.lenovo.com/partslookup replacement parts: Fingerprint reader board Fingerprint reader bracket with rubber Fingerprint reader cable Remove the system board Make sure the following FRUs (or CRUs) have been removed.
  • Page 50 Number of screws M2 x L2 M2 x L3 Go to https://support.lenovo.com/partslookup to look up the Lenovo part numbers of the following replacement part: System board IdeaPad Flex 5i Chromebook (14″, 7) and Lenovo Flex 5i Chromebook 14″ Hardware Maintenance Manual...

  • Page 51: Use A Golden Key U1 Tool To Flash-Write Key Id Information

    The Golden Key U1 tool is prepared by running the U1 Update software on a FAT32-formatted USB thumb drive. Go to for detailed instructions on how to create http://support.lenovo.com/us/en/solutions/HT506954 and use a Goldern Key U1 tool. Remove the LCD unit Make sure the following FRUs (CRUs) have been removed.

  • Page 52: Remove The Upper Case Assembly

    Lenovo part numbers of the following replacement part: LCD unit Remove the upper case assembly Make sure the following FRUs (CRUs) have been removed. IdeaPad Flex 5i Chromebook (14″, 7) and Lenovo Flex 5i Chromebook 14″ Hardware Maintenance Manual...

  • Page 53: Disassemble The Lcd Unit

    “Remove the system board” on page 43 “Remove the LCD unit” on page 45 Go to https://support.lenovo.com/partslookup to look up the Lenovo part numbers of the following replacement part: Upper case assembly Disassemble the LCD unit The LCD unit as a whole is not an FRU. Instead, it contains FRUs as its components. Before disassembling the LCD unit, make sure it has been detached from the upper case assembly.

  • Page 54: Remove The Hinge Rubbers

    “Remove the LCD unit” on page 45 “Remove the strip cover” on page 47 Step 1. Remove two hinge rubbers from the hinge caps carefully. Figure 34. Remove hinge rubbers IdeaPad Flex 5i Chromebook (14″, 7) and Lenovo Flex 5i Chromebook 14″ Hardware Maintenance Manual...

  • Page 55: Remove The Lcd Module

    Refer to to look up the Lenovo part numbers of the following https://support.lenovo.com/partslookup replacement parts: Hinge rubbers Remove the LCD module Make sure the following FRUs (or CRUs) have been removed. “Remove the LCD unit” on page 45 “Remove the strip cover” on page 47 “Remove the hinge rubbers”...

  • Page 56: Remove The Microphone Rubbers

    “Remove the strip cover” on page 47 “Remove the hinge rubbers” on page 48 “Remove the LCD module” on page 49 Step 1. Remove the camera aluminum (Al) foil. IdeaPad Flex 5i Chromebook (14″, 7) and Lenovo Flex 5i Chromebook 14″ Hardware Maintenance Manual...

  • Page 57: Remove The Camera Board

    Figure 37. Remove the camera Al foil Step 2. Turn over the camera board. Then, remove the microphone rubbers. Figure 38. Remove the microphone rubbers Go to to look up the Lenovo part numbers of the following https://support.lenovo.com/partslookup replacement parts: Microphone rubbers Camera Al foil Remove the camera board Make sure the following FRUs (or CRUs) have been removed.

  • Page 58: Remove The Edp Cable

    “Remove the microphone rubbers” on page 50 “Remove the camera board” on page 51 Step 1. Disconnect all connectors of the EDP cable. Then, remove the EDP cable. IdeaPad Flex 5i Chromebook (14″, 7) and Lenovo Flex 5i Chromebook 14″ Hardware Maintenance Manual...

  • Page 59: Remove The Hps Camera And The Hps Board (For Selected Models)

    Figure 40. Disconnect all connectors and remove the EDP cable. Go to to look up the Lenovo part numbers of the following https://support.lenovo.com/partslookup replacement part: EDP cable Remove the HPS camera and the HPS board (for selected models) Make sure the following FRUs (or CRUs) have been removed.
  • Page 60 Disconnect the cable and remove the HPS camera. Figure 42. Disconnect the cable and remove the HPS camera Step 3. Disconnect the cable and remove the HPS board. IdeaPad Flex 5i Chromebook (14″, 7) and Lenovo Flex 5i Chromebook 14″ Hardware Maintenance Manual...

  • Page 61: Remove The Sensor Board

    Figure 43. Disconnect the cable and remove the HPS board Go to to look up the Lenovo part numbers of the following https://support.lenovo.com/partslookup replacement parts: HPS camera HPS board Remove the sensor board Make sure the following FRUs (or CRUs) have been removed.

  • Page 62: Remove The Lcd Cover

    “Remove the HPS camera and the HPS board (for selected models)” on page 53 “Remove the sensor board” on page 55 Go to to look up the Lenovo part numbers of the following https://support.lenovo.com/partslookup replacement part: LCD cover IdeaPad Flex 5i Chromebook (14″, 7) and Lenovo Flex 5i Chromebook 14″ Hardware Maintenance Manual...

  • Page 63: Trademarks

    Trademarks LENOVO, the LENOVO logo, and IdeaPad are trademarks of Lenovo. All other trademarks are the property of their respective owners. © 2022 Lenovo.

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