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 •...
Page 29
Table 4. FRU (CRU) categories FRU (CRU) category LCD module Note: The LCD module as a whole is not a FRU, it contains FRUs as its components. Upper case System board I/O board mylar I/O board I/O board cable Heat sink Fans Wi-Fi card battery pack...
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.
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.
M2 x L9 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 Make sure the following FRU (or CRU) has been removed.
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) plate Make sure the following FRU (or CRU) has been removed.
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 28 Step 1.
Figure 13. 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.
Figure 14. 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 15. Peel back the I/O board mylar Step 4. Disconnect cables connected to the I/O board. Chapter 4 Removing a FRU or CRU...
Page 42
Figure 16. Disconnect cables connected to the I/O board Step 5. Remove one screw and then remove the I/O board. Figure 17. Remove the I/O board Screw specifications Number of screws M2 x L3.5 Step 6. Remove the I/O board mylar. Figure 18.
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 28 “Remove the battery pack”...
Page 44
Figure 20. Peel back the I/O board mylar Step 3. Disconnect cables connected to the system board and then remove the system board. Figure 21. Remove the system board Step 4. Remove the I/O board cable from the system board. Figure 22.
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 34 “Remove the system board and the I/O board cable” on page 37 “Remove the LCD module” on page 39 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 a FRU.
Remove the hinge cover. Figure 25. 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 39 “Remove the hinge cover”...
Step 2. Remove the EDP cable from the LCD panel. Figure 29. 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 39 “Remove the hinge cover” on page 41 “Remove the LCD bezel”...
Figure 32. 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 39 “Remove the hinge cover”...
“Remove the ToF rubber” on page 44 “Remove the camera cable” on page 44 “Remove the camera board” on page 45 Go to https://support.lenovo.com/partslookup to look up the Lenovo part number of the following replacement part: LCD cover Hardware Maintenance Manual...