Lenovo C225 All-In-One - Manual (Page 57)

Replacing the front function board
Note: Turn off the computer and wait 3 to 5 minutes to let the computer cool down before removing the
computer 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 front function board:
Step 1. Remove any media (disks, CDs, 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 optical drive. Refer to “Replacing the optical drive”.
Step 5. Remove the hard disk drive cover. Refer to “Replacing the hard disk drive”.
Step 6. Remove the speaker cover. Refer to “Removing the speaker cover”.
Step 7. Remove the computer cover. Refer to “Removing the computer cover”.
Step 8. Remove the EMI cover. Refer to “ Removing the EMI Cover”.
Step 9. Remove the speaker system. Refer to “Replacing the speaker system”.
Step 10. Disconnect the data cable from the front function board.
Step 11. Remove the 2 screws that secure the front function board to the front bezel.
Step 12. Slide the front function board out and lift it up to remove.
Step 13. Slide the new front function board in, line it up with screw holes on the front bezel and secure
it with the 2 screws.
Step 14. Connect the data cable to the new front function board.
Step 15. Reattach the speaker system, the EMI cover, the computer cover, the speaker cover, the hard disk
drive cover and the optical disk drive.
Chapter 7 . Replacing hardware 53