Dell Vostro V131 (Mid 2011) - Manual (Page 65)

Removing The Input/Output (I/O)
Board
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1. Follow the procedures in Before Working On Your Computer .
2. Remove the battery .
3. Remove the Subscriber Identity Module (SIM) card .
4. Remove the Secure Digital (SD) card .
5. Remove the base cover .
6. Remove the keyboard .
7. Remove the hard drive .
8. Remove the memory .
9. Remove the palm rest .
10. Remove the Wireless Local Area Network (WLAN) card .
11. Remove the Wireless Wide Area Network (WWAN) card .
12. Remove the heat sink .
13. Remove the display assembly .
14. Remove the system board .
15. Disconnect the speaker cable from the I/O board.
16. Remove the I/O board from the chassis.
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