Dell Precision 3520 Owner's Manual

Removing the chassis frame

Follow the procedure in Before working inside your computer .
Remove the:
1. SIM card module
2. base cover
3. battery
4. WLAN card
5. WWAN card
6. SSD card or hard drive
To release the chassis frame:
1. Release the WLAN and WWAN cables from the routing channels [1].
2. Disconnect the speaker cable from the connector on the system board [2].
3. Lift the latch and disconnect the keyboard cable, touchpad cable and pointstick cable from the connector [ 3, 4, 5, 6].
To remove the chassis frame:
1. Remove the screws (M2.0x3.0, M2x5) that secure the chassis frame to the computer [1].
2. Lift the chassis frame away from the computer [2].