Dell Inspiron 14z (1470, Mid 2009) - Manual (Page 59)

DC-in Connector Assembly 59
9 Follow the instructions from step 5 to step 6 in "Replacing the Optical
Drive" on page 25.
10 Replace the module cover. See "Replacing the Module Cover" on page 16.
11 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.