Dell Latitude 3390 2-in-1 Owner's Manual page 35

e coin cell battery
f WLAN card
g system fan
h heat sink
3 To disconnect the following cables from the system board:
a Lift the latch and disconnect the touch screen cable and display cable [1].
b Pull the plastic label and release the I/O board cable on the system board [2].
c Pull the label to disconnect the HDD cable on the system board [3]
d Lift the latch and release the touchpad cable [4].
e Lift the latch and release the cable [5].
f Disconnect the speaker cable on the system board [6].
NOTE: Ensure to use a plastic scribe and push the cable connector towards 6 o'clock to avoid damage to the
connector and cable
g Remove the screws (2) that secures USB Type-C bracket to the system board.
h Disconnect the power connector port cable on the system board [7].
NOTE: Ensure to use a plastic scribe and push the cable connector towards 12 o'clock to avoid damage to the
connector and cable
4 To remove the system board:
Removing and installing components 35