Replacing The Tv Tuner Card - Lenovo IdeaCentre A520 Hardware Maintenance Manual

Step 12. Detach the speakers from the chassis.
Step 13. To install the new speaker system:
a. Attach the new speaker cable to the chassis.
b. Line up the motherboard with the chassis and slide it into position. Align the holes on the
motherboard with the mounting holes on the chassis and secure it to the chassis with the
7 screws.
c. Line up the new speaker system with the mounting holes on the chassis and secure the new
speaker system with the 4 screws.
d. Connect the new speaker cable to the connector on the motherboard.
Step 14. Reattach the optical drive, heat-sink, system fan, and hard disk drive to the motherboard.
Step 15. Reattach the base cover and secure it with the screws.

Replacing the TV tuner card

Note: Turn off the computer and wait 3 to 5 minutes to let it cool down before removing the base cover.
To replace the TV tuner card:
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 base cover. Refer to "Removing the base cover".
Step 5. Remove the hard disk drive. Refer to "Replacing the hard disk drive".
Step 6. Remove the optical drive. Refer to "Replacing the optical drive".
Step 7. Remove the system fan. Refer to "Replacing the system fan".
Step 8. Remove the heat-sink. Refer to "Replacing the heat-sink".
Step 9. Remove all the cables connected to the motherboard.
Step 10. Remove the 4 screws that secure the speakers, then detach them from the chassis and put them
aside.
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IdeaCentre A520 All-In-One PCHardware Maintenance Manual