Dell Inspiron 4000 Parts Manual

Removing and Replacing Parts131
5Remove the M2 x 4-mm screw that secures the display flex cable to the 
display assembly through the flex-cable retention bracket (black 
plastic).
6Lift and rotate the top of the LCD panel out of the top cover.
Replacing the 14.1-Inch LCD Panel
 HINT: Use a magnetic 
screwdriver to reassemble 
the LCD panel in the 
display, and secure the 
right side first. Make sure 
to replace the magnet 
with the minus sign 
toward the bottom of the 
display. 1Place the bottom edge of...

132Removing and Replacing Parts
www.dell.com | support.dell.com
1Remove the hard drive assembly.
2Remove the display assembly.
3Remove the display assembly bezel.
4Remove the tape that covers the connector to the LCD panel located 
at the top of the display-feed flex cable.
5Hold the connector at the top of the display-feed flex cable, and pull 
down and away to remove it from the LCD panel.
Display Assembly Latch
 NOTICE: Disconnect the computer and any attached devices from electrical 
outlets, and...

Removing and Replacing Parts133
1Remove the hard drive assembly.
2Remove the display assembly.
3Remove the display assembly bezel.
4Remove the display assembly bezel latch by removing the two M2.5 x 
5-mm screws that secure it to the display assembly top cover.
Hinge Covers
Removing the Hinge Covers 
1Remove the display assembly.
2Remove the plastic hinge covers from the hinges.
Replacing the Hinge Covers
1Attach the display assembly to the bottom case assembly.
 HINT: The right hinge 
cover is labeled...

134Removing and Replacing Parts
www.dell.com | support.dell.com
right hinge cover
left hinge cover 

Removing and Replacing Parts135
Palm Rest Assembly
 Removing the Palm Rest Assembly
 NOTICE: Disconnect the computer and any attached devices from electrical 
outlets, and remove any installed batteries.
 NOTICE: To avoid ESD, ground yourself by using a wrist grounding strap or 
by touching an unpainted metal surface on the computer.
 NOTICE: Rea d “Preparing to Work Inside the Computer” before performing 
the following procedure.
1
Remove the hard drive assembly.
2Remove the keyboard.
 NOTICE: You must...

136Removing and Replacing Parts
www.dell.com | support.dell.com
aRemove the two M2 x 3-mm screws located in the hard drive bay 
door and labeled with a “circle P.”
bRemove the remaining two M2 x 3-mm screws located on the back 
edge of the bottom case assembly, underneath the display 
assembly.
cTurn the bottom case assembly over. Remove the M2 x 3-mm 
screw located underneath the keyboard, on the right side of the 
bottom case assembly, next to the microprocessor thermal cooling 
assembly.
6Pull up on...

Removing and Replacing Parts137
7Using the plastic scribe along the edge of the plastic, remove the palm 
rest assembly from the bottom case assembly.
Microprocessor Thermal Cooling 
Assembly
Removing the Microprocessor Thermal Cooling Assembly
 NOTICE: Disconnect the computer and any attached devices from electrical 
outlets, and remove any installed batteries.
 NOTICE: To avoid ESD, ground yourself by using a wrist grounding strap or 
by touching an unpainted metal surface on the computer.
 NOTICE: Rea...

138Removing and Replacing Parts
www.dell.com | support.dell.com
4Loosen the four captive screws securing the microprocessor thermal 
cooling assembly.
5Remove the microprocessor thermal cooling assembly from the system 
board assembly.
6Remove the two M2.5 x 5-mm screws and the one M2 x 3-mm screw 
that secure the hybrid cooling fan to the system board.
 HINT: The fan power 
cable is long and can be 
pulled out from under the 
EMI shield to provide 
access to the connector.7Disconnect the fan power cable...

Removing and Replacing Parts139
Microprocessor Module
 NOTICE: Hold the microprocessor down while turning the cam screw to 
prevent intermittent contact between the cam screw and the microprocessor.
 NOTICE: Disconnect the computer and any attached devices from electrical 
outlets, and remove any installed batteries.
 NOTICE: To avoid ESD, ground yourself by using a wrist grounding strap or 
by touching an unpainted metal surface on the computer.
 NOTICE: Rea d “Preparing to Work Inside the Computer”...

140Removing and Replacing Parts
www.dell.com | support.dell.com
 NOTICE: To avoid damaging the microprocessor while removing the cam 
screw, hold the screwdriver so that it is perpendicular to the microprocessor.
aUse a small flat-head screwdriver and rotate the ZIF socket cam 
screw 180 degrees to loosen the ZIF socket.
The ZIF socket cam screw secures the microprocessor assembly to 
the system board assembly. Take note of the arrow on the ZIF 
socket cam screw points to the front of the computer when...