Lenovo IdeaCentre B750 All-in-One - Manual (Page 47)

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. Remove the computer stand. Refer to “Removing the computer stand”.
Step 6. Remove the optical drive. Refer to “Replacing the optical drive”.
Step 7. Remove the middle cover. Refer to “Removing the middle cover”.
Step 8. Remove the EMI cover. Refer to “Removing the EMI cover”.
Step 9. Disconnect the speaker cable from the connectors on motherboard. 1
Step 10. Lift up the speaker system to remove it. 2
Step 11. To install the new speaker system:
a. Line up the new speaker system with mounting screws on the chassis, the place the new
speaker into position.
b. Connect the new speaker cable to motherboard.
Step 12. Reattach the EMI cover, middle cover, optical drive, computer stand and the rear cover.
Chapter 8 . Replacing hardware 41