Replacing The Power Switch Module - Lenovo ideacentre All-In-One 520 Hardware Maintenance Manual

Step 10. To install the new microphone module:
a. Secure the new microphone module to the chassis with the screw.
b. Connect the cable to the motherboard.
Step 11. Reattach the speaker system, motherboard frame, rear cover and stand base.

Replacing the power switch module

Note: Turn off the computer and wait 3 to 5 minutes to let it cool down before removing the cover.
Note: It may be helpful to place the computer face-down on a soft flat surface for this procedure. Lenovo
recommends that you use a blanket, towel, or other soft cloth to protect the computer screen from scratches
or other damage.
To replace the Wi-Fi card:
Step 1. Remove any media 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 Locating connectors,
controls and components to locate the various connectors.
Step 4. Remove the stand base. Refer to Removing the stand base.
Step 5. Remove the rear cover. Refer to Removing the rear cover.
Step 6. Remove the motherboard frame. Refer toRemoving the motherboard frame
Step 7. Remove the screw that secures the power switch module to the chassis.
Step 8. Disconnect the antenna cables from the power switch module.
Step 9. Pull the power switch module out of the slot.
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ideacentre All-In-One 520 (27 inch) Computer Hardware Maintenance Manual