Lenovo IdeaCentre C240, Hardware Maintenance Manual

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Step 8. To reattach the rear cover:
a. Line up the rear cover with the front bezel and reconnect the LVDS cable.
b. Line up the holes on the rear cover with mounting holes on the front bezel, and place the rear
cover into position.
c. Secure the rear cover to the front bezel with the 5 screws.
Replacing a memory module
Attention: Turn off the computer and wait 3 to 5 minutes to let it cool down before removing the rear cover.
To replace a memory module:
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”.
Step 5. Push out the latches on both sides of the memory socket to release the memory module.
1
Gently
pull the memory module upward to remove it from its socket.
2
2
1
1
Step 6. To install the new memory module:
a. Align the new memory module with the memory socket, then insert it and push down on
the top edge.
b. Make sure the latches lock the memory module in place.
Step 7. Reattach the rear cover and secure it with the screws.
Replacing the hard disk drive
Attention: Turn off the computer and wait 3 to 5 minutes to let it cool down before removing the rear cover.
To replace the hard disk drive:
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.
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Lenovo C240/245/255 All-In-One PC Hardware Maintenance Manual