For access, remove these FRUs in order:

1. Remove battery.
2. Remove PCI Express Mini Card for wireless LAN.
3. Remove wireless USB adapter.
4. Remove keyboard.
5. Remove palm rest or palm rest with fingerprint reader.
6. Remove keyboard bezel.
7. Step from (1) to (4) are for the audio FPC, and step (5) to (7) are for the audio sub card.
   

8. When installing make sure that the connectors are attached firmly.
   

9. When installing make sure that the connector is attached firmly.