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.
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.
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: •...
• 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 •...
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Table 3. FRU (CRU) categories FRU (CRU) category LCD module Notes: • For LCD panel, the LCD module as a whole is not a FRU, it contains FRUs as its components. • For OLED panel, the LCD module is a FRU and it cannot be disassembled. Upper case System board System board conduction mylar...
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Figure 2. LCD module - exploded view (for LCD panels only) Table 4. FRU categories for the LCD module FRU (CRU) category Hinge cover LCD bezel LCD panel Microphone rubber Camera board ToF rubber Camera cable Removable tape LCD cover EDP cable Hardware Maintenance Manual...
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.
2. Begin by removing any FRUs that have to be removed before replacing the failing FRU. Any such FRUs are listed at the beginning of each FRU replacement procedure. Remove them in the order in which they are listed. 3. Follow the correct sequence in the steps for removing an FRU, as shown in the illustrations by the numbers in square callouts.
Step 3. Pry up the latches and then remove the lower case. Figure 4. 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 and battery pack cable Make sure the following FRU (or CRU) has been removed.
Remove one screw and then remove the SSD plate. Figure 7. Remove the SSD plate Screw specifications Number of screws M2 x L3.5 Go to to look up the Lenovo part number of the following replacement https://support.lenovo.com/partslookup part: Solid-state drive (SSD) plate Hardware Maintenance Manual...
Screw specifications Number of screws M2 x L2.5 Go to https://support.lenovo.com/partslookup to look up the Lenovo part numbers of the following replacement parts: Solid-state drive (SSD) Remove the Wi-Fi card Make sure the following FRU (or CRU) has been removed.
Figure 9. Remove the Wi-Fi card Screw specifications Number of screws M2 x L3.5 Go to to look up the Lenovo part number of the following replacement https://support.lenovo.com/partslookup part: Wi-Fi card Remove the Type-C bracket Make sure the following FRU (CRU) has been removed.
Go to to look up the Lenovo part number of the following replacement https://support.lenovo.com/partslookup part: Type-C bracket Remove the heat sink Make sure the following FRU (or CRU) has been removed. “Remove the lower case” on page 26 Step 1.
Figure 12. The area where the thermal interface material should be applied Apply the thermal interface material (TIM) on the CPU/GPU contact area of the heat sink (for DIS) Step 1. Clean off the old thermal interface material from the CPU/GPU contact area of the heat sink. Step 2.
Figure 15. Remove the fans Number of screws Screw specifications M2 x L3.5 Go to to look up the Lenovo part number of the following replacement https://support.lenovo.com/partslookup part: Fans Remove the I/O board Make sure the following FRUs (or CRUs) have been removed.
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Figure 16. Remove two screws and then open the hinge Screw specifications Number of screws M2.5 x L5 Step 3. Peel back the I/O board mylar. Figure 17. Peel back the I/O board mylar Step 4. Disconnect cables connected to the I/O board. Hardware Maintenance Manual...
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Figure 18. Disconnect cables connected to the I/O board Step 5. Remove one screw and then remove the I/O board. Figure 19. Remove the I/O board Screw specifications Number of screws M2 x L3.5 Step 6. Remove the I/O board mylar. Figure 20.
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 mylar Remove the system board and the I/O board cable Make sure the following FRUs (or CRUs) have been removed. “Remove the lower case” on page 26 “Remove the battery pack and battery pack cable”...
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Figure 22. Peel back the I/O board mylar Step 3. Disconnect cables connected to the system board and then remove the system board. Figure 23. Remove the system board Step 4. Remove the I/O board cable from the system board. Figure 24.
Go to to look up the Lenovo part numbers of the following https://support.lenovo.com/partslookup replacement parts: System board I/O 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.
“Remove the I/O board” on page 33 “Remove the system board and the I/O board cable” on page 36 “Remove the LCD module” on page 38 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 (for LCD panels only) The LCD module as a whole is not a FRU.
Remove the hinge cover. Figure 27. 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 (or CRUs) have been removed.
Screw specifications Number of screws M1.6 x L2.9 Go to https://support.lenovo.com/partslookup to look up the Lenovo part number of the following replacement part: LCD bezel Remove the LCD panel Make sure the following FRUs (CRUs) have been removed. “Remove the LCD module” on page 38 “Remove the hinge cover”...
Step 2. Remove the EDP cable from the LCD panel. Figure 31. 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 Remove the microphone rubber Make sure the following FRUs (CRUs) have been removed.
Go to to look up the Lenovo part numbers of the following https://support.lenovo.com/partslookup replacement parts: Microphone rubber Removable tape Remove the ToF rubber Make sure the following FRUs (CRUs) have been removed. “Remove the LCD module” on page 38 “Remove the hinge cover” on page 40 “Remove the LCD bezel”...
Figure 34. 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 Removable tape Remove the camera board Make sure the following FRUs (CRUs) have been removed. “Remove the LCD module” on page 38 “Remove the hinge cover”...
“Remove the ToF rubber” on page 43 “Remove the camera cable” on page 43 “Remove the camera board” on page 44 Go to https://support.lenovo.com/partslookup to look up the Lenovo part number of the following replacement part: LCD cover Chapter 4 Removing a FRU or CRU...