Lenovo Flex 20 Lenovo Flex 20 All-In-One PC Hardware Maintenance Manual - Page 45

Replacing the Windows function board

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Step 5. Disconnect the speaker cable from the connector on motherboard. Step 6. Lift up speaker system to remove it. 1 Step 7. To install the new speaker system: a. Line up the new speaker system with the mounting rubber screws. b. Connect the new speaker cable to the connector on the motherboard. Step 8. Reattach the rear cover and secure it with the screws. Replacing the Windows function board Note: Turn off the computer and wait 3 to 5 minutes to let it cool down before removing the rear cover. To replace the power switch board: Step 1. Step 2. Step 3. Step 4. Remove any media (disks, CDs, DVDs, or memory cards) from the drives, shut down the operating system, and turn off the computer and all attached devices. Unplug all power cords from electrical outlets. Disconnect all cables attached to the computer. This includes power cords, input/output (I/O) cables, and any other cables that are connected to the computer. Refer to "Left and right view" and "Rear view" for help with locating the various connectors. Remove the rear cover. Refer to "Removing the rear cover". Chapter 8. Replacing hardware 39

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Step 5.
Disconnect the speaker cable from the connector on motherboard.
Step 6.
Lift up speaker system to remove it.
1
Step 7.
To install the new speaker system:
a.
Line up the new speaker system with the mounting rubber screws.
b.
Connect the new speaker cable to the connector on the motherboard.
Step 8.
Reattach the rear cover and secure it with the screws.
Replacing the Windows function board
Note:
Turn off the computer and wait 3 to 5 minutes to let it cool down before removing the rear cover.
To replace the power switch board:
Step 1.
Remove any media (disks, CDs, DVDs, or memory cards) from the drives, shut down the operating
system, and turn off the computer and all attached devices.
Step 2.
Unplug all power cords from electrical outlets.
Step 3.
Disconnect all cables attached to the computer. This includes power cords, input/output (I/O)
cables, and any other cables that are connected to the computer. Refer to “Left and right view”
and “Rear view” for help with locating the various connectors.
Step 4.
Remove the rear cover. Refer to "Removing the rear cover".
Chapter 8
.
Replacing hardware
39