Dell XPS 27 Service Manual page 121

17 Replace the power-supply
18 Replace the wireless
19 Replace the chassis
20 Replace the system-board
21 Replace the stand.
22 Replace the hard
23 Replace the memory
24 Replace the back
25 Replace the USB dongle-bay
unit.
card.
fan.
shield.
drive.
modules.
cover.
cover.
121