Dell Precision 5520 Owner's Manual

							4 Perform the following steps to remove the hard-drive:
aDisconnect the hard-drive cable from the system board [1].
bLift the hard drive off the palm rest assembly [2].
5 Disconnect the hard drive interposer from the hard drive assembly and then remove the hard drive covers away from the hard drive\
.
Removing and installing components11 
						

							Installing the Hard Drive
1 Replace the hard-drive covers on the hard drive.
2 Connect the hard-drive interposer to the hard-drive assembly.
3 Place the hard-drive assembly on the palm-rest assembly.
4 Connect the hard-drive cable to the system board.
5 Align the screw holes on the hard-drive cage with the screw holes on the hard-drive assembly.
6 Replace the four M2x4 screws that secure the hard-drive cage to the palm-rest assembly.
7 Install the:
abattery
bbase cover
8 Follow the procedures in After Working Inside Your Computer.
Speaker
Removing the Speakers 
1 Follow the procedures in Before Working Inside Your Computer.
2 Remove the:
aBase cover
bbattery
3 Perform the following steps to remove the speaker:
aDisconnect the speaker cable from the system board [1].
bRemove the 4 M2x2 screws that secure the speakers to the computer [2].
cLift the speakers, along with the speaker cable, off the computer [3].
12Removing and installing components 
						

							Installing the Speakers
1 Using the alignment posts, place the speakers on the palm-rest assembly.
2 Replace the four M2x2 screws that secure the speakers to the palm-rest assembly.
3 Route the speaker cables through the routing guides on the palm-rest assembly.
4 Connect the speaker cable to the system board.
5 Install the:
abattery
bbase cover
6 Follow the procedures in After Working Inside Your Computer.
Coin cell battery
Removing the Coin-Cell Battery
1 Follow the procedures in Before Working Inside Your Computer.
CAUTION: Removing the coin-cell battery re-sets the BIOS settings to default. It is recommended that you note the 
BIOS settings before removing the coin-cell battery. 
2 Remove the:
abase cover
bbattery
cWLAN card
dhard drive
efans
fheatsink assembly
Removing and installing components13 
						

							gmemory modules
hsystem board
3 Perform the following steps to remove the coin-cell battery:
aTurn the system board over.
bLift up the coin cell battery [1]
cDisconnect the coin cell battery cable [2] from the system board [3].
Installing the Coin-Cell Battery
1 Replace the coin-cell battery in its slot in the computer.
2 Connect the coin-cell battery cable to the system board.
3 Turn the system board over.
4 Install the:
aSystem Board
bMemory
cHeatsink assembly
dFans
eHard drive
fWLAN card
gBattery
hBase cover
5 Follow the procedures in After Working Inside Your Computer.
Keyboard
Removing the Keyboard
1 Follow the procedures in Before Working Inside Your Computer.
2 Remove the:
abase cover
bbattery
cfans
dheatsink
eSSD
14Removing and installing components 
						

							fmemory module
gsystem board
3 Perform the following steps to disconnect the keyboard and backlight connectors from the computer.
aLift up the connector lock [1] and the disconnect the cables from the connectors [2].
bPeel back the screw shields [3].
4 Un-route the LVDS cable [1] and then remove the 31 M1.6 x 1.5 screws that secure the keyboard to the computer [2].
5 Lift and remove the keyboard from the computer.
Removing and installing components15 
						

							Installing the Keyboard
1 Adhere the Mylar to the keyboard.
2 Align the screw holes on the keyboard with the screw holes on the palm-rest assembly.
3 Replace the 31 M1.6 x 1.5 screws that secure the keyboard to the palm-rest assembly.
4 Adhere the Mylar to the screws that secure the keyboard to the palm-rest assembly.
5 Connect the keyboard cable and keyboard-backlight cable to the keyboard-controls board.
6 Install the:
asystem board
bhard drive
cbase cover
7 Follow the procedures in After Working Inside Your Computer.
WLAN card
Removing the WLAN Card
1 Follow the procedures in Before Working Inside Your Computer.
2 Remove the:
aBase cover
bbattery
3 Perform the following steps to remove the WLAN card:
aRemove the screw to release the bracket that secures the WLAN card to the computer [1] and lift the bracket away from the 
computer [2].
bDisconnect the antenna cables from the WLAN card [3].
cSlide and remove the WLAN card from its connector on the board [4].
16Removing and installing components 
						

							Installing the WLAN Card
1 Align the notch on the WLAN card with the tab on the WLAN-card connector on the I/O board.
2 Align the bracket which secures the WLAN card to the palmrest assembly.
3 Connect the antenna cables to the WLAN card.
CAUTION: To avoid damage to the WLAN card, do not place any cables under it. NOTE: The color of the antenna cables is visible near the tip of the cables. The antenna-cable color scheme for the 
WLAN card supported by your computer is as follows:
Table 1. Antenna-Cable Color Scheme for the WLAN CardConnectors on the WLAN card Antenna-cable color Main (white triangle)whiteAuxiliary (black triangle)blackMultiple input, multiple output (grey triangle)Grey (optional)
4 Tighten the screw to secure the bracket and the WLAN card to the palmrest assembly.
5 Install the:
abattery
bbase cover
6 Follow the procedures in After Working Inside Your Computer.
Removing and installing components17 
						

							Memory module
Removing the Memory Module(s)
1 Follow the procedures in Before Working Inside Your Computer.
2 Remove the:
aBase cover
bbattery
3 Pry the securing clips away from the memory module until it pops-up [1]. Then, remove the memory module from its connector on th\
e 
system board [2].
Installing the Memory Module(s)
1 Insert the memory module into the memory socket.
2 Press the memory module down until it clicks into place.
NOTE: If you do not hear the click, remove the memory module and re-install it.
3 Install the:
abattery
bbase cover
4 Follow the procedures in After Working Inside Your Computer.
System fan
Removing the Fans 
1 Follow the procedures in Before Working Inside Your Computer.
2 Remove the:
aBase cover
bbattery
18Removing and installing components 
						

							3 Perform the following steps to remove the left video-card fan:
aDisconnect the fan cable from the system board [1].
bRemove the two M2x4 screws that secure the fan to the system board[2].
cLift the fan away from the computer [3]
4 Perform the following steps to remove the right system fan:
aUn-thread the LVDS cable from its restraints [1].
bDisconnect the fan cable from the system board [2]
cRemove the two M2x4 screws that secure the fan to the computer [3].
dLift the fan away from the computer [4].
Installing the Fans
1 Perform the following steps to install the system fan:
aAlign the screw holes on the left fan with the screw holes on the palm-rest assembly.
bConnect the left fan cable to the system board.
cRoute the display cable through the routing guides on the left fan.
dReplace the four M2x4 screws that secure the left fan to the system board.
Removing and installing components19 
						

							eConnect the right fan cable to the system board.
fRoute the touch-screen cable through the routing guides on the right fan.
gAdhere the tape that secures the touch-screen cable to the right fan.
hConnect the display cable to the system board.
iReplace the four M2x4 screws that secure the right fan to the system board.
2 Follow the procedures in After Working Inside Your Computer.
Heat sink
Removing the Heatsink
1 Follow the procedures in Before Working Inside Your Computer.
2 Remove the:
aBase cover
bbattery
3 Remove the four M2x3 screws that secure the heatsink to the system board.
4 Lift the heatsink off the computer.
20Removing and installing components