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Lenovo V15 Gen 4 Hardware Maintenance Manual
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Lenovo V15 Gen 4 Hardware Maintenance Manual

Lenovo V15 Gen 4 Hardware Maintenance Manual

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Hardware Maintenance Manual
Lenovo V14 Gen 4 i, Lenovo V14 Gen 4, Lenovo V15 Gen 4 i and
Lenovo V15 Gen 4

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Summary of Contents for Lenovo V15 Gen 4

  • Page 1 Hardware Maintenance Manual Lenovo V14 Gen 4 i, Lenovo V14 Gen 4, Lenovo V15 Gen 4 i and Lenovo V15 Gen 4...
  • Page 2 First Edition (April 2023) © Copyright Lenovo 2023.
  • Page 3 ... Lenovo V15 G4 IAN ... . . Remove the lower case ..
  • Page 4 Remove the heat sink... 102 Remove the upper case ..109 Remove the fan ... . . 103 Disassemble the LCD module .
  • Page 5 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 2023...
  • Page 6 Hardware Maintenance Manual...
  • Page 7 • 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 2023...
  • Page 8 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 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 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 Chapter 1 Safety information...
  • Page 12 Hardware Maintenance Manual...
  • Page 13 PERIGO PERIGO PERIGO PERIGO PERIGO Chapter 1 Safety information...
  • Page 14 PERIGO PERIGO PERIGO DANGER DANGER DANGER Hardware Maintenance Manual...
  • Page 15 DANGER DANGER DANGER DANGER DANGER VORSICHT Chapter 1 Safety information...
  • Page 16 VORSICHT VORSICHT VORSICHT VORSICHT VORSICHT Hardware Maintenance Manual...
  • Page 17 VORSICHT VORSICHT Chapter 1 Safety information...
  • Page 18 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 • 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 2023...
  • Page 26 • Damage caused by liquid spilled into the system • 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 •...
  • Page 27 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. © Copyright Lenovo 2023...
  • Page 28 Figure 1. Lenovo V14 G4 AMN exploded view Hardware Maintenance Manual...
  • Page 29 Table 2. FRU (CRU) categories FRU (CRU) category LCD unit Note: The LCD unit as a whole is not an FRU. It contains FRUs as its components. Upper case Touchpad board cable I/O board I/O board cable Heat sink Wi-Fi card Battery pack Speakers Lower case...
  • Page 30 Figure 2. Lenovo V14 G4 IAN exploded view Hardware Maintenance Manual...
  • Page 31 Table 3. FRU (CRU) categories FRU (CRU) category LCD unit Note: The LCD unit as a whole is not an FRU. It contains FRUs as its components. Upper case Touchpad board cable I/O board I/O board cable Thermal module Wi-Fi card Battery pack Speakers Lower case...
  • Page 32 Figure 3. Lenovo V14 G4 IRU exploded view Table 4. FRU (CRU) categories FRU (CRU) category LCD unit Note: The LCD unit as a whole is not an FRU. It contains FRUs as its components. Upper case I/O board I/O board cable...
  • Page 33 Table 4. FRU (CRU) categories (continued) FRU (CRU) category Hard disk drive (HDD) bracket* Hard disk drive (HDD)* Hard disk drive (HDD) cable* Wi-Fi card Heat sink Battery pack Lower case Memory module shielding DIMM absorber* Memory module CMOS battery Solid-state drive (SSD) bracket Note: The SSD bracket is used to lock the screw for the 2242 SSD.
  • Page 34 Figure 4. Lenovo V14 G4 AMN, Lenovo V14 G4 IAN and Lenovo V14 G4 IRU LCD unit - exploded view Table 5. FRU categories for the LCD unit FRU (CRU) category LCD bezel LCD panel EDP cable Removable tape Hinges...
  • Page 35 Figure 5. Lenovo V15 G4 AMN exploded view Table 6. FRU (CRU) categories FRU (CRU) category LCD unit Note: The LCD unit as a whole is not an FRU. It contains FRUs as its components. Upper case I/O board I/O board cable...
  • Page 36 Table 6. FRU (CRU) categories (continued) FRU (CRU) category Wi-Fi card Battery pack Lower case Solid-state drive (SSD) thermal pad Solid-state drive (SSD) Solid-state drive (SSD) stand off System board Touchpad board cable Power cord b1 b2 ac power adapter* Screw kit * for selected models Hardware Maintenance Manual...
  • Page 37 Figure 6. Lenovo V15 G4 IAN exploded view Table 7. FRU (CRU) categories FRU (CRU) category LCD unit Note: The LCD unit as a whole is not an FRU. It contains FRUs as its components. Upper case I/O board I/O board cable...
  • Page 38 Table 7. FRU (CRU) categories (continued) FRU (CRU) category Wi-Fi card Battery pack Lower case Solid-state drive (SSD) thermal pad Solid-state drive (SSD) Solid-state drive (SSD) stand off System board Touchpad board cable Power cord b1 b2 ac power adapter* Screw kit * for selected models Hardware Maintenance Manual...
  • Page 39 Figure 7. Lenovo V15 G4 IRU exploded view Chapter 3 Identifying FRUs (CRUs)
  • Page 40 Table 8. FRU (CRU) categories FRU (CRU) category LCD unit Note: The LCD unit as a whole is not an FRU. It contains FRUs as its components. Upper case I/O board I/O board cable Hard disk drive (HDD) bracket* Hard disk drive (HDD)* Hard disk drive (HDD) cable* Wi-Fi card Heat sink...
  • Page 41 Figure 8. Lenovo V15 G4 AMN, Lenovo V15 G4 IAN and Lenovo V15 G4 IRU LCD unit — exploded view Table 9. FRU categories for the LCD unit FRU (CRU) category LCD bezel LCD panel EDP cable Removable tape Hinges...
  • Page 42 Table 9. FRU categories for the LCD unit (continued) FRU (CRU) category Camera Microphone rubbers Hardware Maintenance Manual...
  • Page 43 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 44 Attention: The system board is sensitive to and can be damaged by ESD. Before touching it, establish personal grounding by touching a ground point with one hand or by using an ESD strap (P/N 6405959). Removal procedure for Lenovo V14 G4 AMN and Lenovo V14 G4 IAN Remove the lower case Make sure the computer has been shut down before servicing the computer.
  • Page 45 Pry up the latches and then remove the lower case. Figure 10. Pry up the latches and remove the lower case Go to https://support.lenovo.com/partslookup to look up the Lenovo part number of the following replacement part: Lower case Remove the battery pack Make sure the following FRUs (or CRUs) have been removed.
  • Page 46 Screw specifications Number of screws M2 x L3.5 Go to https://support.lenovo.com/partslookup to look up the Lenovo part number of the following replacement part: Battery pack Remove the solid-state drive (SSD) module Make sure the following FRU (or CRU) has been removed.
  • Page 47 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 Remove the solid-state drive (SSD) stand off Make sure the following FRU (or CRU) has been removed.
  • Page 48 Disconnect the speaker cables from the system board and release the speaker cables from the cable guide. Then, remove the speakers. Figure 16. 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 Wi-Fi card Make sure the following FRU (or CRU) has been removed.
  • Page 49 Number of screws M2 x L2.8 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 (for Lenovo V14 G4 AMN) Make sure the following FRU (or CRU) has been removed.
  • Page 50 Number of screws M2 x L5 Go to https://support.lenovo.com/partslookup to look up the Lenovo part number of the following replacement part: Remove the thermal module (for Lenovo V14 G4 IAN) Make sure the following FRU (or CRU) has been removed.
  • Page 51 Loosen four screws and then remove the thermal module. Figure 22. Loosen four screws and then remove the thermal module Go to https://support.lenovo.com/partslookup to look up the Lenovo part number of the following replacement part: Thermal module Remove the I/O board Make sure the following FRU (or CRU) have been removed.
  • Page 52 Figure 24. Remove the I/O 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 parts: I/O board Remove the I/O board cable Make sure the following FRU (or CRU) have been removed.
  • Page 53 Disconnect the I/O board cable from the I/O board and system board. Release the cable from cable guide, then remove the I/O board cable. Figure 25. Remove the I/ O board cable Go to to look up the Lenovo part numbers of the following https://support.lenovo.com/partslookup replacement parts: I/O board cable Remove the touchpad board cable Make sure the following FRU (or CRU) have been removed.
  • Page 54 “Remove the solid-state drive (SSD) module” on page 40 “Remove the solid-state drive (SSD) stand off” on page 41 “Remove the Wi-Fi card” on page 42 “Remove the heat sink (for Lenovo V14 G4 AMN)” on page 43 Step 1. Remove two screws and then open the hinge.
  • Page 55 Screw specifications Number of screws M2.5 x L5 Step 2. Disconnect cables connected to the system board. Figure 29. Disconnect cables connected to the system board Step 3. Remove five screws and then remove the system board. Chapter 4 Removing a FRU or CRU...
  • Page 56 Screw specifications Number of screws M2 x L2.8 M2 x L3.5 Go to to look up the Lenovo part numbers of the following https://support.lenovo.com/partslookup replacement parts: System board Use a Golden Key U1 tool to flash-write key id information After replacing the system board and re-assembling the computer, use a pre-made Golden Key U1 tool to start the computer and flash-write the serial number (SN), machine type (MT), product name (PN), and UUID to the new system board.
  • Page 57 “Remove the solid-state drive (SSD) stand off” on page 41 “Remove the speakers” on page 42 “Remove the Wi-Fi card” on page 42 “Remove the heat sink (for Lenovo V14 G4 AMN)” on page 43 Chapter 4 Removing a FRU or CRU...
  • Page 58 “Remove the fan (for Lenovo V14 G4 AMN)” on page 44 “Remove the I/O board” on page 45 “Remove the I/O board cable” on page 46 “Remove the touchpad board cable” on page 47 “Remove the system board” on page 48 “Remove the LCD module”...
  • Page 59 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 50 “Remove the LCD bezel”...
  • Page 60 Figure 36. Lift the LCD panel and then disconnect the EDP cable from the LCD panel Go to to look up the Lenovo part numbers of the following https://support.lenovo.com/partslookup replacement parts: LCD panel Removable tape Remove the microphone rubbers Make sure the following FRUs (CRUs) have been removed.
  • Page 61 Disconnect the EDP cable from the camera board and then remove the EDP cable. Figure 38. Disconnect the EDP cable from the camera board and then remove the EDP cable Go to to look up the Lenovo part numbers of the following https://support.lenovo.com/partslookup replacement parts:...
  • Page 62 “Remove the microphone rubbers” on page 54 “Remove the EDP cable” on page 54 “Remove the camera” on page 55 Go to to look up the Lenovo part number of the following replacement https://support.lenovo.com/partslookup part: LCD cover Removal procedure for Lenovo V14 G4 IRU Remove the lower case Make sure the computer has been shut down before servicing the computer.
  • Page 63 Pry up the latches and then remove the lower case. Figure 41. Pry up the latches and remove the lower case Go to https://support.lenovo.com/partslookup to look up the Lenovo part number of the following replacement part: Lower case Remove the hard disk drive (HDD) module (for selected models) Make sure the following FRU (or CRU) has been removed.
  • Page 64 Figure 45. Remove four screws and then separate the HDD from the HDD bracket Screw specifications Number of screws M3.0 x L3 Go to to look up the Lenovo part numbers of the following https://support.lenovo.com/partslookup replacement parts: HDD cable HDD bracket...
  • Page 65 Figure 46. Remove two screws and then remove the battery pack Screw specifications Number of screws M2 x L5 Go to to look up the Lenovo part number of the following replacement https://support.lenovo.com/partslookup part: Battery pack Remove the battery pack (for models without HDD) Make sure the following FRUs (or CRUs) have been removed.
  • Page 66 Screw specifications Number of screws M2 x L5 Go to https://support.lenovo.com/partslookup to look up the Lenovo part number of the following replacement part: Battery pack Remove the solid-state drive (SSD) module Make sure the following FRU (or CRU) has been removed.
  • Page 67 Figure 50. Remove the SSD by pulling it away from the slot Step 5. Remove the SSD thermal pad. Figure 51. Remove the SSD thermal pad Go to to look up the Lenovo part numbers of the following https://support.lenovo.com/partslookup replacement parts: SSD bracket SSD thermal pad Remove the Wi-Fi card Make sure the following FRU (or CRU) has been removed.
  • Page 68 Figure 52. Remove the Wi-Fi card Screw specifications Number of screws M2 x L2.8 Go to to look up the Lenovo part number of the following replacement https://support.lenovo.com/partslookup part: Wi-Fi card Remove the CMOS battery Make sure the following FRU (or CRU) has been removed.
  • Page 69 Go to to look up the Lenovo part number of the following replacement https://support.lenovo.com/partslookup part: CMOS battery Remove the memory module Make sure the following FRU (or CRU) has been removed. “Remove the lower case” on page 56 Step 1.
  • Page 70 Attention: Use your fingernails to pull the connector to unplug it. Do not pull the cable. Step 2. Loosen four screws and then remove the heat sink. Figure 57. Remove the heat sink Go to to look up the Lenovo part number of the following replacement https://support.lenovo.com/partslookup part: Heat sink Hardware Maintenance Manual...
  • Page 71 Figure 59. Remove three screws and then remove the fan Screw specifications Number of screws M2 x L5 Go to https://support.lenovo.com/partslookup to look up the Lenovo part number of the following replacement part: Chapter 4 Removing a FRU or CRU...
  • Page 72 Remove the I/O board module Make sure the following FRU (or CRU) have been removed. “Remove the lower case” on page 56 “Remove the fan” on page 65 Step 1. Remove two screws and then open the hinge. Figure 60. Remove two screws and then open the hinge Screw specifications Number of screws M2.5 x L5...
  • Page 73 Step 3. Separate the I/O board cable from the I/O board. Figure 62. Separate the I/O board cable from the I/O board Go to to look up the Lenovo part numbers of the following https://support.lenovo.com/partslookup replacement parts: I/O board I/O board cable Remove the system board and the touchpad board cable Make sure the following FRUs (or CRUs) have been removed.
  • Page 74 Figure 63. Remove two screws and then open the hinge Screw specifications Number of screws M2.5 x L5 Step 2. Disconnect the touchpad board cable from the touchpad and disconnect cables connected to the system board. Figure 64. Disconnect the touchpad board cable and disconnect cables connected to the system board Step 3.
  • Page 75 Step 4. Disconnect the touchpad board cable from the system board. Figure 66. Disconnect the touchpad board cable from the system board Go to to look up the Lenovo part numbers of the following https://support.lenovo.com/partslookup replacement parts: System board Touchpad board cable...
  • Page 76 Step 2. Detach the main and auxiliary antenna cable connectors and disconnect the EDP cable from the system board. Figure 67. Detach the antenna cable connectors and disconnect the EDP cable Step 3. Rotate the LCD unit to an angle of more than 90 degrees and place the computer on a flat surface as shown.
  • Page 77 “Remove the I/O board module” on page 66 “Remove the system board and the touchpad board cable” on page 67 “Remove the LCD module” on page 69 Go to to look up the Lenovo part number of the following replacement https://support.lenovo.com/partslookup part: Upper case Disassemble the LCD module The LCD module as a whole is not an FRU.
  • Page 78 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 69 “Remove the LCD bezel”...
  • Page 79 Lift the LCD panel and then disconnect the EDP cable from the LCD panel. Figure 72. Lift the LCD panel and then disconnect the EDP cable from the LCD panel 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 microphone rubbers Make sure the following FRUs (CRUs) have been removed.
  • Page 80 Figure 73. Remove the microphone rubbers Go to https://support.lenovo.com/partslookup to look up the Lenovo part numbers of the following replacement parts: Microphone rubbers Removable tape Remove the EDP cable Make sure the following FRUs (CRUs) have been removed. “Remove the LCD module” on page 69 “Remove the LCD bezel”...
  • Page 81 Disconnect the EDP cable from the camera board and then remove the camera. Figure 75. Disconnect the EDP cable from the camera board and then remove the camera Go to to look up the Lenovo part numbers of the following https://support.lenovo.com/partslookup replacement parts:...
  • Page 82 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 83 Removal procedure for Lenovo V15 G4 AMN and Lenovo V15 G4 IAN 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.
  • Page 84 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 FRUs (or CRUs) have been removed. “Remove the lower case” on page 77 Step 1.
  • Page 85 M2 x L2.8 Step 3. Remove the SSD thermal pad. Figure 80. Remove the SSD thermal pad Go to to look up the Lenovo part numbers of the following https://support.lenovo.com/partslookup replacement parts: SSD thermal pad Remove the solid-state drive (SSD) stand off Make sure the following FRU (or CRU) has been removed.
  • Page 86 M2 x L2.8 Step 3. Remove the SSD stand off. Figure 82. Remove the SSD stand off 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) stand off Remove the Wi-Fi card Make sure the following FRU (or CRU) has been removed.
  • Page 87 Figure 83. Remove the Wi-Fi card Screw specifications Number of screws M2 x L2.8 Go to to look up the Lenovo part number of the following replacement https://support.lenovo.com/partslookup part: Wi-Fi card Remove the heat sink (for Lenovo V15 G4 AMN) Make sure the following FRU (or CRU) has been removed.
  • Page 88 Remove three screws and then remove the fan. Figure 86. Remove three screws and then remove the fan Screw specifications Number of screws M2 x L2.8 Go to https://support.lenovo.com/partslookup to look up the Lenovo part number of the following replacement part: Hardware Maintenance Manual...
  • Page 89 Loosen four screws and then remove the thermal module. Figure 88. Loosen four screws and then remove the thermal module Go to https://support.lenovo.com/partslookup to look up the Lenovo part number of the following replacement part: Thermal module Remove the I/O board Make sure the following FRU (or CRU) have been removed.
  • Page 90 Figure 90. Remove the I/O 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 parts: I/O board Remove the I/O board cable Make sure the following FRU (or CRU) have been removed.
  • Page 91 “Remove the lower case” on page 77 “Remove the fan (for Lenovo V15 G4 AMN)” on page 82 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.
  • Page 92 “Remove the solid-state drive (SSD) module” on page 78 “Remove the solid-state drive (SSD) stand off” on page 79 “Remove the Wi-Fi card” on page 80 “Remove the heat sink (for Lenovo V15 G4 AMN)” on page 81 Step 1. Remove two screws and then open the hinge.
  • Page 93 Step 2. Disconnect cables connected to the system board. Figure 94. Disconnect cables connected to the system board Step 3. Remove six screws and then remove the system board. Chapter 4 Removing a FRU or CRU...
  • Page 94 Screw specifications Number of screws M2 x L2.8 M2 x L3.5 Go to to look up the Lenovo part numbers of the following https://support.lenovo.com/partslookup replacement parts: System board Use a Golden Key U1 tool to flash-write key id information After replacing the system board and re-assembling the computer, use a pre-made Golden Key U1 tool to start the computer and flash-write the serial number (SN), machine type (MT), product name (PN), and UUID to the new system board.
  • Page 95 “Remove the solid-state drive (SSD) module” on page 78 “Remove the solid-state drive (SSD) stand off” on page 79 “Remove the Wi-Fi card” on page 80 “Remove the heat sink (for Lenovo V15 G4 AMN)” on page 81 Chapter 4 Removing a FRU or CRU...
  • Page 96 “Remove the fan (for Lenovo V15 G4 AMN)” on page 82 “Remove the I/O board” on page 83 “Remove the I/O board cable” on page 84 “Remove the touchpad board cable” on page 85 “Remove the system board and the touchpad board cable” on page 86 “Remove the LCD module”...
  • Page 97 Number of screws M2.5 x L3.3 M2 x L2.8 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 88 “Remove the LCD bezel”...
  • Page 98 Lift the LCD panel and then disconnect the EDP cable from the LCD panel. Figure 101. Lift the LCD panel and then disconnect the EDP cable from the LCD panel Go to to look up the Lenovo part numbers of the following https://support.lenovo.com/partslookup replacement parts:...
  • Page 99 Figure 102. Remove the camera rubbers Go to https://support.lenovo.com/partslookup to look up the Lenovo part numbers of the following replacement parts: Microphone rubbers Removable tape Remove the EDP cable Make sure the following FRUs (CRUs) have been removed. “Remove the LCD module” on page 88 “Remove the LCD bezel”...
  • Page 100 “Remove the microphone rubbers” on page 92 “Remove the EDP cable” on page 93 “Remove the camera” on page 93 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 101 Removal procedure for Lenovo V15 G4 IRU 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 eleven screws. Figure 105. Remove eleven screws...
  • Page 102 Go to to look up the Lenovo part number of the following replacement https://support.lenovo.com/partslookup part: Lower case Remove the hard disk drive (HDD) module (for selected models) Make sure the following FRU (or CRU) has been removed. “Remove the lower case” on page 95 Step 1.
  • Page 103 Figure 110. Remove four screws and then separate the HDD from the HDD bracket Screw specifications Number of screws M3.0 x L3 Go to to look up the Lenovo part numbers of the following https://support.lenovo.com/partslookup replacement parts: HDD cable HDD bracket Remove the battery pack (for models with HDD) Make sure the following FRUs (or CRUs) have been removed.
  • Page 104 Number of screws M2 x L5 Go to https://support.lenovo.com/partslookup to look up the Lenovo part number of the following replacement part: Battery pack Remove the battery pack (for models without HDD) Make sure the following FRUs (or CRUs) have been removed.
  • Page 105 Figure 113. Remove one screw Screw specifications Number of screws M2 x L2.8 Step 3. Remove the SSD bracket. Figure 114. Remove the SSD bracket Step 4. Remove the SSD by pulling it away from the slot. Figure 115. Remove the SSD by pulling it away from the slot Step 5.
  • Page 106 Figure 116. Remove the SSD thermal pad Go to to look up the Lenovo part numbers of the following https://support.lenovo.com/partslookup replacement parts: SSD bracket SSD thermal pad Remove the Wi-Fi card Make sure the following FRU (or CRU) has been removed.
  • Page 107 Go to to look up the Lenovo part number of the following replacement https://support.lenovo.com/partslookup part: Wi-Fi card Remove the CMOS battery Make sure the following FRU (or CRU) has been removed. “Remove the lower case” on page 95 Step 1.
  • Page 108 Release the two latches on both edges of the socket at the same time. Then, remove the memory module. Figure 120. Remove the memory module Go to to look up the Lenovo part numbers of the following https://support.lenovo.com/partslookup replacement parts: Memory module shielding...
  • Page 109 Figure 121. Remove the heat sink Go to https://support.lenovo.com/partslookup to look up the Lenovo part number of the following replacement part: Heat sink Remove the fan Make sure the following FRU (or CRU) has been removed. “Remove the lower case” on page 95 Step 1.
  • Page 110 Figure 123. Remove three screws and then remove the fan Screw specifications Number of screws M2 x L5 Go to to look up the Lenovo part number of the following replacement https://support.lenovo.com/partslookup part: Remove the I/O board module Make sure the following FRU (or CRU) has been removed.
  • Page 111 Separate the I/O board cable from the I/O board. Figure 126. Separate the I/O board cable from the I/O board Go to https://support.lenovo.com/partslookup to look up the Lenovo part numbers of the following replacement parts: I/O board I/O board cable Remove the system board and the touchpad board cable Make sure the following FRUs (or CRUs) have been removed.
  • Page 112 “Remove the battery pack (for models with HDD)” on page 97 or “Remove the battery pack (for models without HDD)” on page 98 “Remove the solid-state drive (SSD) module” on page 98 “Remove the Wi-Fi card” on page 100 “Remove the CMOS battery” on page 101 “Remove the memory module”...
  • Page 113 Figure 128. Disconnect the touchpad board cable and disconnect cables connected to the system board Step 3. Remove four screws and then remove the system board with touchpad board cable. Figure 129. Remove four screws and then remove the system board with touchpad board cable Screw specifications Number of screws M2 x L2.8...
  • Page 114 Go to to look up the Lenovo part numbers of the following https://support.lenovo.com/partslookup replacement parts: System board Touchpad board cable Use a Golden Key U1 tool to flash-write key id information After replacing the system board and re-assembling the computer, use a pre-made Golden Key U1 tool to start the computer and flash-write the serial number (SN), machine type (MT), product name (PN), and UUID to the new system board.
  • Page 115 “Remove the system board and the touchpad board cable” on page 105 “Remove the LCD module” on page 108 Go to https://support.lenovo.com/partslookup to look up the Lenovo part number of the following replacement part: Upper case Disassemble the LCD module The LCD module as a whole is not an FRU.
  • Page 116 “Remove the LCD module” on page 108 Step 1. Remove the LCD bezel. Figure 133. Remove the LCD bezel Go to to look up the Lenovo part number of the following replacement https://support.lenovo.com/partslookup part: LCD bezel Remove the hinges Make sure the following FRUs (CRUs) have been removed.
  • Page 117 Screw specifications Number of screws M2.5 x L3.3 M2 x L2.8 Go to to look up the Lenovo part number of the following replacement https://support.lenovo.com/partslookup part: Hinges Remove the LCD panel Make sure the following FRUs (CRUs) have been removed.
  • Page 118 Figure 136. Lift the LCD panel and then disconnect the EDP cable from the LCD panel 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 microphone rubbers Make sure the following FRUs (CRUs) have been removed.
  • Page 119 Disconnect the EDP cable from the camera board and then remove the EDP cable. Figure 138. Disconnect the EDP cable from the camera board and then remove the EDP cable Go to https://support.lenovo.com/partslookup to look up the Lenovo part numbers of the following replacement parts: EDP cable Removable tape Remove the camera Make sure the following FRUs (CRUs) have been removed.
  • Page 120 “Remove the microphone rubbers” on page 112 “Remove the EDP cable” on page 112 “Remove the camera” on page 113 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 121 Figure 140. Label layout on the back side of the base cover -Lenovo V14 G4 AMN, Lenovo V14 G4 IAN, Lenovo V14 G4 Figure 141. Label layout on the back side of the base cover - Lenovo V15 G4 AMN , Lenovo V15 G4 IAN, Lenovo V15 G4 Make sure to apply the appropriate labels to the replacement base cover.
  • Page 122 Hardware Maintenance Manual...
  • Page 123 Trademarks LENOVO and the LENOVO logo are trademarks of Lenovo. All other trademarks are the property of their respective owners. © 2023 Lenovo.

This manual is also suitable for:

V14 gen 4V15 gen 4 iV14 gen 4 i83cr0016us