Replacing The System Board - Lenovo ThinkCentre M720t User Manual And Hardware Maintenance Manual

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3. Replace the rear fan.
Figure 131. Removing the rear fan
Figure 132. Installing the rear fan
4. Connect the rear fan cable to the system board.
5. Complete the replacement. See "Completing the parts replacement" on page 74.

Replacing the system board

Attention: Do not open your computer or attempt any repairs before reading the Important Product
Information Guide.
1. Remove the computer cover. See "Removing the computer cover" on page 23.
2. Remove the front bezel. See "Replacing the front bezel" on page 23.
3. Remove the front I/O bracket. See "Replacing the front I/O bracket" on page 58.
4. Remove all memory modules. See "Replacing a memory module" on page 31.
5. Remove the heat sink and fan assembly. See "Replacing the heat sink and fan assembly" on page 62.
6. Remove the microprocessor. See "Replacing the microprocessor" on page 64.
7. Remove all PCI Express cards. See "Replacing a PCI Express card" on page 34.
8. Remove the Wi-Fi card. See "Replacing the Wi-Fi card" on page 36.
9. Remove the M.2 solid-state drive. See "Replacing the M.2 solid-state drive" on page 38.
.
Chapter 4
Replacing hardware
73

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