Replacing The Speaker System - Lenovo C345 Hardware Maintenance Manual

Step 12. Remove the two screws that secure rear I/O module to the bracket
then slide it out.
Step 13. To install the new rear I/O module:
a. Line up the new I/O module with bracket, then insert the rear I/O module into position.
b. Secure the rear I/O module to the bracket with the two screws.
c. Connect the power cable to the motherboard and the TV antenna cable(s) to the TV tuner card.
Step 14. Reattach the EMI cover, middle cover, optical drive, stand holder, foot cover and stand base.

Replacing the speaker system

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 speaker system:
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 stand base. Refer to "Removing the stand base".
Step 5. Remove the foot cover. Refer to "Removing the foot cover".
Step 6. Remove the optical drive. Refer to "Replacing the optical drive".
2
1 , loose the rear I/O module,
.
Chapter 8 Replacing hardware
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