Lenovo ThinkBook 14p Gen 3 Hardware Maintenance Manual
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Lenovo ThinkBook 14p Gen 3 Hardware Maintenance Manual

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Lenovo ThinkBook 14p Gen 3
Hardware Maintenance Manual

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Summary of Contents for Lenovo ThinkBook 14p Gen 3

  • Page 1 Lenovo ThinkBook 14p Gen 3 Hardware Maintenance Manual...
  • Page 2 First Edition (June 2022) © Copyright Lenovo 2022.

  • Page 3: Table Of Contents

    Remove the USB bracket ... Trademarks ....lxi Remove the I/O bracket... . © Copyright Lenovo 2022...
  • Page 4 Lenovo ThinkBook 14p Gen 3 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 Lenovo ThinkBook 14p Gen 3 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

    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 ThinkBook 14p Gen 3 Hardware Maintenance Manual...
  • Page 11 DANGER DANGER DANGER DANGER DANGER Chapter 1 Safety information...
  • Page 12 Lenovo ThinkBook 14p Gen 3 Hardware Maintenance Manual...
  • Page 13 PERIGO PERIGO PERIGO Chapter 1 Safety information...
  • Page 14 PERIGO PERIGO PERIGO PERIGO PERIGO Lenovo ThinkBook 14p Gen 3 Hardware Maintenance Manual...
  • Page 15 DANGER DANGER DANGER DANGER Chapter 1 Safety information...
  • Page 16 DANGER DANGER DANGER DANGER VORSICHT Lenovo ThinkBook 14p Gen 3 Hardware Maintenance Manual...
  • Page 17 VORSICHT VORSICHT VORSICHT VORSICHT Chapter 1 Safety information...
  • Page 18 VORSICHT VORSICHT VORSICHT Lenovo ThinkBook 14p Gen 3 Hardware Maintenance Manual...
  • Page 19 Chapter 1 Safety information...
  • Page 20 Lenovo ThinkBook 14p Gen 3 Hardware Maintenance Manual...
  • Page 21 Chapter 1 Safety information...
  • Page 22 Lenovo ThinkBook 14p Gen 3 Hardware Maintenance Manual...
  • Page 23 Chapter 1 Safety information...
  • Page 24 Lenovo ThinkBook 14p Gen 3 Hardware Maintenance Manual...
  • Page 25 Chapter 1 Safety information...
  • Page 26 Lenovo ThinkBook 14p Gen 3 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

    Table 1. Model: ThinkBook 14p G3 ARH (Machine type: 21EJ) Type ac power adapter self-service Power cord self-service Table 2. Model: ThinkBook 14p G3 ARH 1 (Machine type: 21EJ) Type ac power adapter self-service Power cord self-service Lenovo ThinkBook 14p Gen 3 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 3. FRU (CRU) categories...
  • Page 30 CMOS battery RTC mylar Fans I/O bracket USB bracket Touchpad board cable Keyboard sponge Upper case (with keyboard and touchpad) Strip cover System board thermal pad Power cord ac power adapter Screw kit Lenovo ThinkBook 14p Gen 3 Hardware Maintenance Manual...
  • Page 31 Figure 2. LCD module - exploded view Table 4. FRU (CRU) categories FRU (CRU) category LCD panel Microphone rubbers Camera privacy shutter Camera Ambient light sensor (ALS) board OLED panel Al foil* IR camera CU foil* IR camera sponges* LCD cover Removable tapes EDP cable Hinges...
  • Page 32 Lenovo ThinkBook 14p Gen 3 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

    Place the computer upside down on a flat surface. Step 2. Remove nine screws and pry up the latches. Then, remove the lower case. Figure 3. Remove nine screws, pry up the latches and remove the lower case Lenovo ThinkBook 14p Gen 3 Hardware Maintenance Manual...

  • Page 35: Remove The Battery Pack

    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: Lower case Remove the battery pack Make sure the following FRUs (or CRUs) have been removed. “Remove the lower case” on page 28 Step 1.

  • Page 36: Remove The Solid-State Drive (Ssd) Module

    Figure 5. Remove the battery pack 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: Battery pack Remove the solid-state drive (SSD) module Make sure the following FRUs (or CRUs) have been removed.
  • Page 37 Figure 6. Remove the SSD Thermal pad and one screw Screw specifications Number of screws M2 × L3 Step 3. Remove the SSD by pulling it away from the slot. Figure 7. Remove the SSD Step 4. Remove the SSD CU foil mylar. Chapter 4 Removing a FRU or CRU...

  • Page 38: Remove The Wi-Fi Card

    2. X-RiteColorAssistant.exe will auto run. Click Restore Profile button from prompted window to restore the profile from Lenovo cloud. Go to to look up the Lenovo part numbers of the following https://support.lenovo.com/partslookup replacement parts: Solid-state drive (SSD) Solid-state drive (SSD) Thermal pad...

  • Page 39: Remove The Cmos Battery

    Figure 9. Disconnect the wireless antennas and remove one screw and the Wi-Fi card Screw specifications Number of screws M2 × L3 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 mylar Remove the CMOS battery Make sure the following FRUs (or CRUs) have been removed.

  • Page 40: Remove The Usb Bracket

    Disconnect the CMOS battery cable from the system board and then remove the CMOS battery. Figure 11. Disconnect the CMOS battery cable and then remove the CMOS battery Go to https://support.lenovo.com/partslookup to look up the Lenovo part numbers of the following replacement parts: CMOS battery CMOS battery mylar Remove the USB bracket Make sure the following FRUs (or CRUs) have been removed.
  • Page 41 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. Step 2. Peel off the foil. Figure 12. Lift the foil Step 3. Remove three screws and remove the USB bracket. Figure 13.

  • Page 42: Remove The I/O Bracket

    Go to to look up the Lenovo part numbers of the following https://support.lenovo.com/partslookup replacement part: USB bracket Remove the I/O bracket Make sure the following FRUs (or CRUs) have been removed. “Remove the lower case” on page 28 Step 1.

  • Page 43: Remove The Speakers

    Figure 15. Remove the DC-in sponge Go to to look up the Lenovo part numbers of the following https://support.lenovo.com/partslookup replacement part: DC-in sponge Remove the speakers Make sure the following FRUs (CRUs) have been removed. “Remove the lower case” on page 28 Step 1.

  • Page 44: Remove The Fans

    Loosen three screws in alphabetical order and remove the heat sink. Figure 17. Loosen three screws and remove the heat sink Go to https://support.lenovo.com/partslookup to look up the Lenovo part numbers of the following replacement part: Heat sink Remove the fans Make sure the following FRUs (or CRUs) have been removed.

  • Page 45: Remove The Power Board Module

    Number of screws M2 × L4 Go to https://support.lenovo.com/partslookup to look up the Lenovo part numbers of the following replacement part: Remove the power board module Make sure the following FRUs (or CRUs) have been removed. “Remove the lower case” on page 28 “Remove the Wi-Fi card”...
  • Page 46 Figure 20. Disconnect the power board cable, remove one screw and the power board module Screw specifications Number of screws M2 × L2 Step 4. Disconnect the power board cable from the power board. Lenovo ThinkBook 14p Gen 3 Hardware Maintenance Manual...

  • Page 47: Remove The Touchpad Board Cable

    Figure 21. Disconnect the power board cable Go to to look up the Lenovo part numbers of the following https://support.lenovo.com/partslookup replacement parts: Power board Power board cable Lock mylar Remove the touchpad board cable Make sure the following FRUs (or CRUs) have been removed.

  • Page 48: Remove The System Board

    Go to to look up the Lenovo part numbers of the following https://support.lenovo.com/partslookup replacement part: Touchpad board cable Remove the system board Make sure the following FRUs (or CRUs) have been removed. “Remove the lower case” on page 28 “Remove the battery pack” on page 29 “Remove the solid-state drive (SSD) module”...
  • Page 49 When installing: The system board thermal pad is reusable. Replace it on the location marked "a" as shown when replacing related FRUs. Figure 25. Replace the system board thermal pad Go to https://support.lenovo.com/partslookup to look up the Lenovo part numbers of the following replacement part: System board System board thermal pad Chapter 4...

  • Page 50: Use A Golden Key U1 Tool To Flash-Write Key Id Information

    “Remove the power board module” on page 39 “Remove the system board” on page 42 Step 1. Peel off the mylar. Figure 26. Peel off the mylar Step 2. Remove the fingerprint reader board with cable. Lenovo ThinkBook 14p Gen 3 Hardware Maintenance Manual...

  • Page 51: Remove The Main And Auxiliary Antennas

    Separate the fingerprint reader board cable from the fingerprint board. Figure 28. Separate the fingerprint reader board cable from the fingerprint reader board Go to to look up the Lenovo part numbers of the following https://support.lenovo.com/partslookup replacement parts: Fingerprint reader board...

  • Page 52: Remove The Strip Cover

    Figure 29. Remove the main and auxiliary antennas Go to https://support.lenovo.com/partslookup to look up the Lenovo part numbers of the following replacement part: Main and auxiliary antennas Remove the strip cover Make sure the following FRUs (or CRUs) have been removed.

  • Page 53: Remove The Lcd Module

    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: Strip cover Remove the LCD module Make sure the following FRUs (or CRUs) have been removed. “Remove the lower case” on page 28 “Remove the battery pack”...

  • Page 54: Remove The Upper Case (With Keyboard And Touchpad)

    Number of screws M2.5 × L4 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 keyboard and touchpad) Make sure the following FRUs (CRUs) have been removed.

  • Page 55: Disassemble The Lcd Module

    “Remove the main and auxiliary antennas” on page 45 “Remove the strip cover” on page 46 “Remove the LCD module” on page 47 Go to to look up the Lenovo part numbers of the following https://support.lenovo.com/partslookup replacement part: Upper case (with keyboard and touchpad) Disassemble the LCD module The LCD module as a whole is not an FRU.

  • Page 56: Remove The Lcd Panel

    “Remove the LCD bezel” on page 49 Step 1. Remove the hinge cover. Figure 33. 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 panel Make sure the following FRUs (or CRUs) have been removed.
  • Page 57 1. Connect your computer to the network and close the X-Rite Color Assistant program. 2. Go to to download the installation https://pcsupport.lenovo.com/us/en/downloads/DS543953 software. Double-click the EXE file and follow the on-screen instructions to finish the installation. 3. Go to C:\Program files (x86)\X-Rite Color Assistant and locate the ProfileUpdaterForDisplayReplacement.exe file.

  • Page 58: Remove The Hinges

    LCD part. When the new color profiles are installed successfully, a prompted window will be displayed. Go to https://support.lenovo.com/partslookup to look up the Lenovo part numbers of the following replacement parts: LCD panel Removable tape Remove the hinges Make sure the following FRUs (or CRUs) have been removed.
  • Page 59 “Remove the LCD bezel” on page 49 “Remove the hinge cover” on page 49 “Remove the LCD panel” on page 50 Step 1. Remove three screws and then remove the left hinge. Disconnect the camera cable from the camera board and disconnect the sensor board cable from the sensor board. Then, remove the EDP cable.

  • Page 60: Remove The Camera Privacy Shutter

    Figure 38. Remove the OLED panel AL foil. Go to https://support.lenovo.com/partslookup to look up the Lenovo part numbers of the following replacement part: EDP cable OLED panel AL foil Remove the camera privacy shutter Make sure the following FRUs (or CRUs) have been removed.

  • Page 61: Remove The Camera

    Figure 39. Remove the camera privacy shutter Go to https://support.lenovo.com/partslookup to look up the Lenovo part numbers of the following replacement part: Camera privacy shutter Remove the camera Make sure the following FRUs (or CRUs) have been removed. “Remove the LCD module” on page 47 “Remove the LCD bezel”...

  • Page 62: Remove The Ir Camera Cu Foil And Ir Camera Sponge (For Selected Models)

    Disconnect the camera cable from the camera board and then remove the camera. Figure 41. Disconnect the camera cable and remove the camera Go to to look up the Lenovo part numbers of the following https://support.lenovo.com/partslookup replacement part: Microphone rubber...

  • Page 63: Remove The Ambient Light Sensor (Als) Board

    Remove the IR camera CU foil and IR camera sponge. Figure 42. Remove the IR camera CU foil and IR camera sponge Go to https://support.lenovo.com/partslookup to look up the Lenovo part numbers of the following replacement parts: IR camera CU foil IR camera sponge Remove the ambient light sensor (ALS) board Make sure the following FRUs (or CRUs) have been removed.

  • Page 64: Remove The Lcd Cover

    Disconnect the ambient light sensor board cable from the ambient light sensor board and then remove the ambient light sensor board. Figure 44. Remove the ambient light sensor board Go to to look up the Lenovo part numbers of the following https://support.lenovo.com/partslookup replacement part: Ambient light sensor (ALS) board Remove the LCD cover Make sure the following FRUs (CRUs) have been removed.
  • Page 65 “Remove the IR camera CU foil and IR camera sponge (for selected models)” on page 56 “Remove the ambient light sensor (ALS) board” on page 57 Go to https://support.lenovo.com/partslookup to look up the Lenovo part numbers of the following replacement part: LCD cover Chapter 4...
  • Page 66 Lenovo ThinkBook 14p Gen 3 Hardware Maintenance Manual...

  • Page 67: Trademarks

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

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