Dell Vostro 3555 (Mid 2011) - Manual (Page 69)

Display Assembly
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Removing The Display Assembly
1. Follow the procedures in Before Working On Your Computer
2. Remove the battery .
3. Remove the access panel .
4. Remove the WWAN card .
5. Remove the keyboard .
6. Remove the palm rest .
7. Remove the WLAN card .
8. Pry off the middle cover.
9. Pull out any WWAN antenna cables from the routing hole.
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