System Board - Lenovo AIO V540-24IWL Hardware Maintenance Manual

System board

Prerequisite
Before you start, read Chapter 2 "Important safety information" on page 27 and print the following
instructions.
Avoid contact with hot components inside the computer. During operation, some components become hot
enough to burn the skin. Before you open the computer cover, turn off the computer, disconnect power, and
wait approximately 10 minutes for the components to cool.
The heat sink and system fan might be very hot. Before you open the computer cover, turn off the computer
and wait several minutes until the computer is cool.
Replacement procedure
1. Remove the computer stand. See "Computer stand" on page 57.
2. Remove the computer cover. See "Computer cover" on page 59.
3. Remove the internal speakers. See "Internal speakers" on page 61.
4. Remove the VESA mount bracket. See "VESA mount bracket" on page 62.
5. Remove the system board shield. See "System board shield and system fan" on page 63.
6. To get access to the system board, remove the following parts if any:
a. "Heat sink" on page 70.
b. "Thermal pad" on page 71.
c. "M.2 solid-state drive" on page 72.
d. "Coin-cell battery" on page 74.
e. "Memory module" on page 75.
f. "Wi-Fi card" on page 76.
7. Record the cable routing and cable connections, and then disconnect all cables from the system board.
See "System board" on page 57.
82
Hardware Maintenance Manual