Dell Precision 7720 - LED Board

a) heat sink
b) I/O board (right)
c) I/O board (left)
d) palmrest
e) power connector port
f) graphic card
g) M.2 SSD card
h) WWAN card
i) WLAN card
j) primary memory
k) secondary memory
l) HDD cable
m) keyboard
n) hard drive
o) base cover
p) battery
q) battery cover
r) SD card
6. Follow the procedure in After working inside your computer.
LED board
Removing the LED board
1. Follow the procedures in Before working inside your computer.
2. Remove the:
a) battery cover
b) battery
c) base cover
d) hard drive
e) keyboard
f) secondary memory
g) palmrest
3. To remove LED board:
a) Lift the tab and disconnect the LED-board cable from the LED board [1].
b) Remove the M2.0x3.0 screw that secures the LED board to the computer and remove it from the computer [2].
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Disassembly and reassembly