Lenovo ThinkBook 14 2-in-1 G5 IAU Hardware Maintenance Manual
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Lenovo ThinkBook 14 2-in-1 G5 IAU Hardware Maintenance Manual

Lenovo ThinkBook 14 2-in-1 G5 IAU Hardware Maintenance Manual

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Hardware Maintenance Manual
Lenovo ThinkBook 14 2-in-1 Gen 5

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Summary of Contents for Lenovo ThinkBook 14 2-in-1 G5 IAU

  • Page 1 Hardware Maintenance Manual Lenovo ThinkBook 14 2-in-1 Gen 5...
  • Page 2 First Edition (March 2025) © Copyright Lenovo 2025.

  • Page 3: Table Of Contents

    Trademarks ....lxiii Remove the 2280 solid-state drive and thermal pad (for selected models) ... © Copyright Lenovo 2025...
  • Page 4 Hardware Maintenance Manual...

  • Page 5: About This Manual

    • It is recommended that these products be repaired by trained service technicians. For customers electing to repair their own Lenovo products, please follow all instructions carefully. • Before servicing a Lenovo product, be sure to read all the information under Chapter 1 “Safety information” on page 1.
  • Page 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 – Removing or installing main units © Copyright Lenovo 2025...

  • 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 Hardware Maintenance Manual...
  • Page 13 PERIGO PERIGO PERIGO Chapter 1 Safety information...
  • Page 14 PERIGO PERIGO PERIGO PERIGO PERIGO Hardware Maintenance Manual...
  • Page 15 DANGER DANGER DANGER DANGER Chapter 1 Safety information...
  • Page 16 DANGER DANGER DANGER DANGER VORSICHT Hardware Maintenance Manual...
  • Page 17 VORSICHT VORSICHT VORSICHT VORSICHT Chapter 1 Safety information...
  • Page 18 VORSICHT VORSICHT VORSICHT Hardware Maintenance Manual...
  • Page 19 Chapter 1 Safety information...
  • Page 20 Hardware Maintenance Manual...
  • Page 21 Chapter 1 Safety information...
  • Page 22 Hardware Maintenance Manual...
  • Page 23 Chapter 1 Safety information...
  • Page 24 Hardware Maintenance Manual...
  • Page 25 Chapter 1 Safety information...
  • Page 26 Hardware Maintenance Manual...

  • Page 27: Chapter 2. General Checkout

    • LCD panel cracked from the application of excessive force or from being dropped • 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 © Copyright Lenovo 2025...

  • 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 Type ac power adapter self-service power cord* self-service Lenovo Yoga Pen* self-service * for selected models 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 © Copyright Lenovo 2025...
  • Page 30 Table 1. FRU (CRU) categories FRU (CRU) category LCD cover Camera shutter Camera board EDP cable LCD module Sensor board Touch control cable Upper case assembly Fingerprint sensor board Fingerprint sensor cable I/O board I/O board cable CMOS battery Solid-state drive (SSD) brackets Note: The SSD bracket is used to lock the screw for the 2242 SSD.
  • Page 31 Table 1. FRU (CRU) categories (continued) FRU (CRU) category ac power adapter Screw pack Power cord* Lenovo Yoga Pen* * for selected models Chapter 3 Identifying FRUs (CRUs)
  • Page 32 Hardware Maintenance Manual...

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

    Chapter 4. Removing an 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: Handling Thermal Interface Materials

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

  • Page 35: Area On The System Board Where Thermal Interface Materials Are Applied

    Figure 2. Area on the heat sink where thermal interface materials should be applied Area on the system board where thermal interface materials are applied The following figure shows the area on the system board where thermal interface materials are applied. Figure 3.
  • Page 36 1.85 ± 0.15 Step 3. Pry up the latches and remove the lower case. Figure 5. Remove the lower case Go to to look up the Lenovo part number of the following replacement https://support.lenovo.com/partslookup part: Lower case Hardware Maintenance Manual...

  • Page 37: Remove The Battery Pack

    Number of screws Torque force (kgf.cm) M2 × L4 1.85 ± 0.15 Go to to look up the Lenovo part number of the following replacement https://support.lenovo.com/partslookup part: Battery pack Remove the 2242 solid-state drive (SSD), thermal pad, and bracket (for selected models) Make sure the following FRU (or CRU) has been removed.
  • Page 38 Screw specifications Number of screws Torque force (kgf.cm) M2 × L3 1.85 ± 0.15 Go to to look up the Lenovo part numbers of the following https://support.lenovo.com/partslookup replacement parts: 2242 solid-state drive (SSD) 2242 SSD thermal pad 2242 SSD bracket...

  • Page 39: Remove The 2280 Solid-State Drive And Thermal Pad (For Selected Models)

    Remove the 2280 solid-state drive and thermal pad (for selected models) Make sure the following FRUs (or CRUs) have been removed. “Remove the lower case” on page 29 Step 1. Disconnect the battery pack cable from the system board. Attention: Use your fingernail to pull the connector to unplug it. Do not pull the cable. Step 2.

  • Page 40: Remove The Wi-Fi Card

    Figure 10. Remove the 2280 SSD thermal pad Go to https://support.lenovo.com/partslookup to look up the Lenovo part numbers of the following replacement parts: 2280 solid-state drive 2280 SSD thermal pad Remove the Wi-Fi card Make sure the following FRU (or CRU) has been removed.

  • Page 41: Remove The Heat Sink

    Torque force (kgf.cm) M2 × L3 1.85 ± 0.15 Go to https://support.lenovo.com/partslookup to look up the Lenovo part number of the following replacement part: Wi-Fi card Remove the heat sink Make sure the following FRU (or CRU) has been removed.
  • Page 42 Figure 13. Remove the heat sink Screw specifications Number of screws Torque force (kgf.cm) M2 × L3 1.85 ± 0.15 Go to to look up the Lenovo part numbers of the following https://support.lenovo.com/partslookup replacement parts: Foil mylar Heat sink Hardware Maintenance Manual...

  • Page 43: Remove The Fan

    Remove the fan Make sure the following FRUs (or CRUs) have been removed. “Remove the lower case” on page 29 “Remove the 2242 solid-state drive (SSD), thermal pad, and bracket (for selected models)” on page 31 Step 1. Disconnect the battery pack cable from the system board. Attention: Use your fingernail to pull the connector to unplug it.

  • Page 44: Remove The Cmos Battery

    M2 × L4 1.85 ± 0.15 Go to https://support.lenovo.com/partslookup to look up the Lenovo part number of the following replacement part: Remove the CMOS battery Make sure the following FRU (or CRU) has been removed. “Remove the lower case” on page 29 Step 1.

  • Page 45: Remove The Speakers

    Figure 17. Remove the foil mylar from the memory module Step 3. Open the buckles and remove the memories. Figure 18. Open the buckles and remove the memories Go to to look up the Lenovo part numbers of the following https://support.lenovo.com/partslookup replacement parts: Foil mylar Memory Remove the speakers Make sure the following FRUs (CRUs) have been removed.

  • Page 46: Remove The I/O Board

    Figure 19. Remove the speakers Go to to look up the Lenovo part number of the following replacement https://support.lenovo.com/partslookup part: Speakers Remove the I/O board Make sure the following FRUs (or CRUs) have been removed. “Remove the lower case” on page 29 “Remove the CMOS battery”...
  • Page 47 Figure 21. Remove the I/O board Screw specifications Number of screws Torque force (kgf.cm) M2 × L4 1.85 ± 0.15 Go to to look up the Lenovo part number of the following replacement https://support.lenovo.com/partslookup part: I/O board Chapter 4 Removing an FRU or CRU...

  • Page 48: Remove The I/O Bracket

    Remove the I/O bracket Make sure the following FRU (or CRU) has been removed. “Remove the lower case” on page 29 Step 1. Disconnect the battery pack cable from the system board. Attention: Use your fingernail to pull the connector to unplug it. Do not pull the cable. Step 2.

  • Page 49: Remove The Fingerprint Sensor Board And Cable

    Torque force (kgf.cm) M2 x L4 1.85 ± 0.15 Go to https://support.lenovo.com/partslookup to look up the Lenovo part number of the following replacement part: Foil mylar I/O bracket Remove the fingerprint sensor board and cable Make sure the following FRUs (or CRUs) have been removed.

  • Page 50: Remove The Touchpad Cable

    Torque force (kgf.cm) M2 × L2 1.85 ± 0.15 Go to https://support.lenovo.com/partslookup to look up the Lenovo part numbers of the following replacement parts: Fingerprint sensor board Fingerprint sensor cable Remove the touchpad cable Make sure the following FRUs (CRUs) have been removed.
  • Page 51 “Remove the lower case” on page 29 “Remove the battery pack” on page 31 Step 1. Peel off the battery sponge. Figure 26. Peel off the battery sponge Step 2. Lift the keyboard cable. Figure 27. Lift the keyboard cable Step 3.

  • Page 52: Remove The System Board And The I/O Board Cable

    Figure 28. Remove the touchpad cable Go to to look up the Lenovo part numbers of the following https://support.lenovo.com/partslookup replacement parts: Battery sponge Touchpad cable Remove the system board and the I/O board cable Make sure the following FRUs (or CRUs) have been removed.
  • Page 53 Figure 29. Disconnect the cables Step 2. Remove the battery sponge. Remove three screws. Remove the system board with the I/O board cable. Figure 30. Remove the system board with the I/O board cable Screw specifications Number of screws Torque force (kgf.cm) M2 ×...

  • Page 54: Write Key Product Information To A Replacement System Board

    Attention: Take extra caution when entering the MTM and SN and when selecting the product name and keyboard language. Carefully verify these details before committing the writing action. Once recorded on the system board, they cannot be altered. Consult Lenovo service if you are uncertain about the MTM, SN, and product name for your PC.

  • Page 55: Remove The Lcd Unit

    Step 7. Click Yes in the confirmation window to restart the computer and apply the configuration on the system board. Note: Do not turn off the computer or disconnect the computer from ac power during the whole process. Remove the LCD unit The LCD unit as a whole is not an FRU, but it contains FRUs as its components.
  • Page 56 Figure 33. Open the hinges Screw specifications Number of screws Torque force (kgf.cm) M2.5 × L6 1.85 ± 0.15 M2 × L4 1.85 ± 0.15 Step 3. Flip open the keyboard assembly and detach it from the LCD unit. Hardware Maintenance Manual...

  • Page 57: Lcd Self Test

    Figure 34. Remove the LCD unit Go to to look up the Lenovo part number of the following replacement https://support.lenovo.com/partslookup part: Acetate tape LCD Self Test When you turn on the computer and the LCD goes black, run LCD Self Test to help you determine whether the LCD functions normally.

  • Page 58: Disassemble The Lcd Unit

    “Remove the touchpad cable” on page 44 “Remove the system board and the I/O board cable” on page 46 “Remove the LCD unit” on page 49 Go to to look up the Lenovo part number of the following replacement https://support.lenovo.com/partslookup part: Upper case assembly Disassemble the LCD unit Before disassembling the LCD unit, make sure it has been detached from the upper case assembly.

  • Page 59: Remove The Lcd Module

    Figure 35. Remove the strip cover Go to to look up the Lenovo part number of the following replacement https://support.lenovo.com/partslookup part: Strip cover Remove the LCD module Make sure the following FRUs (CRUs) have been removed. “Remove the lower case” on page 29 “Remove the LCD unit”...
  • Page 60 Peel off the tape and the mylar, disconnect the EDP cable from the LCD module, and then remove the LCD module. Figure 38. Remove the LCD module Go to https://support.lenovo.com/partslookup to look up the Lenovo part numbers of the following replacement parts: LCD module Hardware Maintenance Manual...

  • Page 61: Remove The Hinges

    Number of screws Torque force (kgf.cm) M2.0 × L2.5 3.0 ± 0.15 Go to to look up the Lenovo part number of the following replacement https://support.lenovo.com/partslookup part: Hinges Remove the EDP cable Make sure the following FRUs (CRUs) have been removed.

  • Page 62: Remove The Microphone Rubber

    Figure 40. Remove the EDP cable Go to to look up the Lenovo part number of the following replacement https://support.lenovo.com/partslookup part: EDP cable Remove the microphone rubber Make sure the following FRUs (CRUs) have been removed. “Remove the lower case” on page 29 “Remove the LCD unit”...

  • Page 63: Remove The Sensor Board

    Go to to look up the Lenovo part number of the following replacement https://support.lenovo.com/partslookup part: Microphone rubber Remove the sensor board Make sure the following FRUs (CRUs) have been removed. “Remove the lower case” on page 29 “Remove the LCD unit” on page 49 “Remove the strip cover”...

  • Page 64: Remove The Camera Shutter

    Figure 43. Remove the touch control cable Go to to look up the Lenovo part number of the following replacement https://support.lenovo.com/partslookup part: Touch control cable Remove the camera shutter Make sure the following FRUs (CRUs) have been removed. “Remove the lower case” on page 29 “Remove the LCD unit”...

  • Page 65: Remove The Camera Board

    Go to to look up the Lenovo part number of the following replacement https://support.lenovo.com/partslookup part: Camera shutter Remove the camera board Make sure the following FRUs (CRUs) have been removed. “Remove the lower case” on page 29 “Remove the LCD unit” on page 49 “Remove the strip cover”...

  • Page 66: Remove The Lcd Cover

    “Remove the touch control cable” on page 57 “Remove the camera shutter” on page 58 “Remove the camera board” on page 59 Go to to look up the Lenovo part number of the following replacement https://support.lenovo.com/partslookup part: LCD cover Hardware Maintenance Manual...

  • Page 67: Appendix A. Label Locations

    22 mm × 30 mm Country/region label US/CA/TW/CA label 32 mm × 10 mm Japan WL/BT label 32 mm × 10 mm KR KCC label 43 mm × 24 mm Malaysia MCMC label 8 mm × 8 mm © Copyright Lenovo 2025...
  • Page 68 Table 3. All base cover labels (for aluminum models) (continued) Label description Applied country/region Label Label dimensions South Africa WL label 20 mm × 10 mm TW vision warning label 70 mm × 10 mm Vietnam Energy label 10 mm × 9 mm GML label 16.1 mm ×...

  • Page 69: Trademarks

    Trademarks LENOVO and the LENOVO logo are trademarks of Lenovo. All other trademarks are the property of their respective owners. © 2025 Lenovo.

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