Lenovo C20-30 Lenovo C20 Series Touch All-In-One PC Hardware Maintenance Manua - Page 46

ReplacingtheI/OShielding

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Step 12. To install the new motherboard or the new heat-sink: a. Attach the heat-sink, Wi-Fi card, memory modules to the motherboard. b. Line up the holes on the new motherboard with the mounting holes on the rear cover and secure the new motherboard with the 8 screws. c. Insert the notched end of the Wi-Fi card into the card port on the new motherboard and secure it with the screw. d. Connect the antenna cable(s) to the Wi-Fi card. e. Connect all the cables to the new motherboard. Step 13. Reattach the rear cover. Replacing the I/O Shielding Note: Turn off the computer and wait 3 to 5 minutes to let it cool down before removing the rear cover. To replace the I/O shielding: 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". 40 Lenovo C20 Series Touch All-In-One PC Hardware Maintenance Manual

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Step 12. To install the new motherboard or the new heat-sink:
a. Attach the heat-sink, Wi-Fi card, memory modules to the motherboard.
b. Line up the holes on the new motherboard with the mounting holes on the rear cover and
secure the new motherboard with the 8 screws.
c. Insert the notched end of the Wi-Fi card into the card port on the new motherboard and
secure it with the screw.
d. Connect the antenna cable(s) to the Wi-Fi card.
e. Connect all the cables to the new motherboard.
Step 13. Reattach the rear cover.
ReplacingtheI/OShielding
Note:
Turnoffthecomputerandwait3to5minutestoletitcooldownbeforeremovingtherearcover.
ToreplacetheI/Oshielding:
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".
40
Lenovo C20 Series Touch All-In-One PC Hardware Maintenance Manual