Replacing The System Board - Lenovo 10SJ0027IX User Manual And Hardware Maintenance Manual

Figure 109. Installing the power supply assembly
7. Connect the new power supply assembly cable to the system board.
8. Reinstall the removed parts. To complete the replacement, see "Completing the parts replacement" on
page 62.

Replacing the system board

Attention: Do not open your computer or attempt any repairs before reading the Important Product
Information Guide.
1. Remove any media from the drives and turn off all connected devices and the computer. Disconnect all
power cords from electrical outlets and disconnect all cables from the computer.
2. Remove the computer cover. See "Removing the computer cover" on page 19.
3. Remove the front bezel. See "Replacing the front bezel" on page 20.
4. Remove the front I/O options. See "Replacing the front I/O options" on page 31.
5. Pivot the drive bay assembly upward. See "Pivoting the drive bay assembly upward and downward" on
page 23.
6. Remove all memory modules. See "Replacing the memory module" on page 40.
7. Remove the heat sink and fan assembly. See "Replacing the heat sink and fan assembly" on page 41.
8. Remove the microprocessor. See "Replacing the microprocessor" on page 43.
9. Remove all PCI Express cards. See "Replacing a PCI Express card" on page 45.
10. Remove the Wi-Fi card. See "Replacing the Wi-Fi card" on page 48.
11. Remove the M.2 storage drive. See "Replacing the M.2 storage drive" on page 56.
12. Record the cable routing and cable connections, and then disconnect all cables from the system board.
See "System board" on page 5.
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Chapter 4 Replacing hardware
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