Dell Inspiron 14z (1470, Mid 2009) - Manual (Page 81)

Heat-Sink Assembly 81
3 Align the four captive screws on the heat sink with the screw holes on the
system board and tighten the screws in sequential order as indicated on the
heat sink.
4 Follow the instructions from step 2 to step 9 in "Replacing the System
Board" on page 75.
5 Replace the wireless mini-card. See "Replacing the Mini-Card" on page 42.
6 Replace the thermal fan. See "Replacing the Thermal Fan" on page 70.
7 Replace the display assembly. See "Replacing the Display Assembly" on
page 47.
8 Replace the memory module(s). See "Replacing the Memory Module(s)"
on page 28.
9 Replace the palm-rest assembly. See "Replacing the Palm-Rest Assembly"
on page 38.
10 Replace the keyboard. See "Replacing the Keyboard" on page 33.
11 Replace the hard-drive assembly. See "Replacing the Hard-Drive Assembly"
on page 21.
12 Follow the instructions from step 5 to step 6 in "Replacing the Optical
Drive" on page 25.
13 Replace the module cover. See "Replacing the Module Cover" on page 16.
14 Replace the battery. See "Replacing the Battery" on page 14.
CAUTION: Before turning on the computer, replace all screws and ensure that no
stray screws remain inside the computer. Failure to do so may result in damage to
the computer.