Lenovo ThinkBook 13s Gen 4 Hardware Maintenance Manual
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Lenovo ThinkBook 13s Gen 4 Hardware Maintenance Manual

Lenovo ThinkBook 13s Gen 4 Hardware Maintenance Manual

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Hardware Maintenance Manual
Lenovo ThinkBook 13s Gen 4

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  • Page 1 Hardware Maintenance Manual Lenovo ThinkBook 13s Gen 4...
  • Page 2 First Edition (January 2022) © Copyright Lenovo 2022.

  • Page 3: Table Of Contents

    Trademarks ....lvii Remove the speakers ... . Remove the I/O bracket... . © Copyright Lenovo 2022...
  • Page 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 2022...
  • 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 © 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

    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

    • 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

    • Damage caused by the improper insertion of a personal-computer card (PC card) or the installation of an incompatible card • Improper disc insertion or use of an external optical drive • Fuses blown by attachment of a non-supported device •...

  • 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. ThinkBook 13s G4 IAP and ThinkBook 13s G4 ARB exploded view...
  • Page 30 Table 3. FRU (CRU) categories FRU (CRU) category Upper case Fingerprint board Fingerprint board cable I/O board cable (40 pin) I/O board cable (30 pin) I/O board Heat sink Fans 2280 Solid-state drive (SSD) 2242 Solid-state drive (SSD) Solid-state drive (SSD) bracket Note: The SSD bracket is used to lock the screw for the 2242 SSD.
  • Page 31 Figure 2. ThinkBook 13s G4 IAP and ThinkBook 13s G4 ARB LCD module — exploded view Chapter 3 Identifying FRUs (CRUs)
  • Page 32 Table 4. FRU (CRU) categories FRU (CRU) category LCD cover Hinges Sensor board (with cable) Removable tape LCD panel LCD bezel Hinge cover EDP cable Camera cable Camera privacy shutter Microphone rubbers Camera board 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

    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: Remove The Battery Pack

    Step 3. Pry up the latches and then remove the lower case. Figure 4. Pry up the latches and 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 Remove the battery pack Make sure the following FRU (or CRU) has been removed.

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

    Go to to look up the Lenovo part number of the following replacement https://support.lenovo.com/partslookup part: Battery pack Remove the solid-state drive (SSD) module Make sure the following FRU (or CRU) has been removed. “Remove the lower case” on page 28 Step 1.

  • Page 37: Remove The Speakers

    Figure 8. Remove the speakers Go to https://support.lenovo.com/partslookup to look up the Lenovo part number of the following replacement part: Speakers Remove the I/O bracket Make sure the following FRU (or CRU) has been removed.
  • Page 38 Figure 9. Peel off the pieces of tape Step 3. Remove four screws and then open the hinge. Figure 10. Open the hinge Screw specifications Number of screws M2.5 x L5 M2 x L4 Step 4. Remove two screws and then remove the I/O bracket. Hardware Maintenance Manual...

  • Page 39: Remove The Touchpad Cable

    Figure 11. Remove the I/O bracket Screw specifications Number of screws M2 x L4 Go to to look up the Lenovo part number of the following replacement https://support.lenovo.com/partslookup part: I/O bracket Remove the touchpad cable Make sure the following FRUs (or CRUs) have been removed.

  • Page 40: Remove The Touchpad

    Remove the touchpad Make sure the following FRUs (or CRUs) have been removed. “Remove the lower case” on page 28 “Remove the battery pack” on page 29 Step 1. Peel back the tape and then peel off the three pieces of tape. Figure 13.

  • Page 41: Remove The Heat Sink

    Figure 15. Remove the touchpad Go to to look up the Lenovo part number of the following replacement https://support.lenovo.com/partslookup part: Touchpad Remove the heat sink Make sure the following FRU (or CRU) has been removed. “Remove the lower case” on page 28 Step 1.

  • Page 42: Remove The Fans

    Figure 17. Remove the heat sink Screw specifications Number of screws M2 x L3 Go to to look up the Lenovo part number of the following replacement https://support.lenovo.com/partslookup part: Heat sink Remove the fans Make sure the following FRU (or CRU) has been removed.

  • Page 43: Remove The I/O Board

    Screw specifications Number of screws M2 x L4 Go to https://support.lenovo.com/partslookup to look up the Lenovo part number of the following replacement part: Fans Remove the I/O board Make sure the following FRU (or CRU) has been removed. “Remove the lower case” on page 28...
  • Page 44 Step 1. Disconnect the battery pack cable from the system board. Attention: Use your fingernails to pull the connector to unplug it. Do not pull the cable. Step 2. Peel off the tape and then remove the SSD. See “Remove the solid-state drive (SSD) module” on page 30 for details.
  • Page 45 Figure 23. Remove four screws and open the hinge Screw specifications Number of screws M2.5 x L5 M2 x L4 Step 5. Disconnect all cables connected to the I/O board. Chapter 4 Removing a FRU or CRU...
  • Page 46 Figure 24. Disconnect all cables connected to the I/O board Step 6. Remove three screws and then remove the I/O board. Figure 25. Remove the I/O board Hardware Maintenance Manual...

  • Page 47: Remove The Fingerprint Board Module

    Screw specifications Number of screws M2 x L4 M2 x L2 Go to to look up the Lenovo part number of the following replacement https://support.lenovo.com/partslookup part: I/O board Remove the fingerprint board module Make sure the following FRUs (or CRUs) have been removed.

  • Page 48: Remove The System Board And The I/O Board Cable

    Separate the fingerprint board cable from the fingerprint board. Figure 28. Separate the fingerprint board cable from the fingerprint board Go to https://support.lenovo.com/partslookup to look up the Lenovo part numbers of the following replacement parts: Fingerprint board Fingerprint board cable Remove the system board and the I/O board cable Make sure the following FRUs (or CRUs) have been removed.
  • Page 49 Figure 29. Peel off the two pieces of tape Step 2. Disconnect cables connected to the system board and disconnect the I/O board cable from the I/O board. Figure 30. Disconnect cables connected to the system board and disconnect the I/O board cable Step 3.

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

    Disconnect the I/O board cable (30 pin) and the I/O board cable (40 pin) from the system board. Figure 32. 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:...

  • Page 51: Remove The Lcd Module

    Remove the LCD module Make sure the following FRU (CRU) has been removed. “Remove the lower case” on page 28 Step 1. Disconnect the battery pack cable from the system board. Attention: Use your fingernails to pull the connector to unplug it. Do not pull the cable. Step 2.

  • Page 52: Remove The Upper Case

    “Remove the fingerprint board module” on page 41 “Remove the system board and the I/O board cable” on page 42 “Remove the LCD module” on page 45 Go to https://support.lenovo.com/partslookup to look up the Lenovo part number of the following replacement part: Upper case Hardware Maintenance Manual...

  • Page 53: Disassemble The Lcd Module

    Remove the hinge cover. Figure 36. Remove the hinge cover Go to https://support.lenovo.com/partslookup to look up the Lenovo part number of the following replacement part: Hinge cover Remove the LCD bezel Make sure the following FRUs (CRUs) have been removed.

  • Page 54: Remove The Hinges

    Screw specifications Number of screws M2 x L4 Go to https://support.lenovo.com/partslookup to look up the Lenovo part number of the following replacement part: LCD bezel Remove the hinges Make sure the following FRUs (CRUs) have been removed. “Remove the LCD module” on page 45 “Remove the hinge cover”...

  • Page 55: Remove The Lcd Panel

    Screw specifications Number of screws M2 x L2 Go to https://support.lenovo.com/partslookup to look up the Lenovo part number of the following replacement part: Hinges Remove the LCD panel Make sure the following FRUs (CRUs) have been removed. “Remove the LCD module” on page 45 “Remove the hinge cover”...

  • Page 56: Remove The Camera Privacy Shutter

    Figure 40. Remove the EDP cable Go to to look up the Lenovo part numbers of the following https://support.lenovo.com/partslookup replacement parts: LCD panel EDP cable Removable 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 57: Remove The Microphone Rubbers

    Figure 41. Remove the camera privacy shutter Go to https://support.lenovo.com/partslookup to look up the Lenovo part numbers of the following replacement parts: Camera privacy shutter Removable tape Remove the microphone rubbers Make sure the following FRUs (CRUs) have been removed.

  • Page 58: Remove The Camera Cable

    Disconnect the camera cable from the sensor board and the camera board and then remove the camera cable. Figure 43. Remove the camera cable Go to to look up the Lenovo part numbers of the following https://support.lenovo.com/partslookup replacement parts: Camera cable...

  • Page 59: Remove The Sensor Board (With Cable)

    Figure 44. Remove the camera board Go to https://support.lenovo.com/partslookup to look up the Lenovo part numbers of the following replacement parts: Camera board Removable tape Remove the sensor board (with cable) Make sure the following FRUs (CRUs) have been removed.

  • Page 60: Remove The Lcd Cover

    “Remove the camera cable” on page 52 “Remove the camera board” on page 52 “Remove the sensor board (with cable)” on page 53 Go to to look up the Lenovo part number of the following replacement https://support.lenovo.com/partslookup part: LCD cover...

  • Page 61: Appendix A. Label Locations

    Appendix A. Label locations Figure 46. Label layout on the back side of the base cover Make sure to apply the appropriate labels to the replacement base cover. Table 6. All base cover labels Label Label name Label dimensions © Copyright Lenovo 2022...
  • Page 62 Hardware Maintenance Manual...

  • Page 63: 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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