Dell Inspiron 4000 Parts Manual

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SECTION 10
Removing and 
Replacing Parts
Preparing to Work Inside the Computer
Recommended Tools
Screw Identification
System Components
Replacing the Palm Rests
Replacing the Display Cover
Hard Drive Assembly
Modular Bay Devices
Memory Module
Mini PCI Card Assembly
Keyboard Assembly
Removing the Display Assembly
Display Assembly Latch
Hinge Covers
Palm Rest Assembly
Microprocessor Thermal Cooling Assembly
Microprocessor Module
Reserve Battery 
						

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System Speaker 
Assembly
System Board 
Assembly
Module Latch 
Assemblies 
						

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Preparing to Work Inside the 
Computer
 NOTICE: Only a certified service technician should perform repairs on your 
computer. Damage or inoperability due to servicing not authorized by Dell is 
not covered by your warranty.
 NOTICE: Unless otherwise noted, each procedure in this manual assumes that 
a part can be replaced by performing the removal procedure in reverse order.
 NOTICE: To avoid damaging the computer, perform the following steps before 
you begin working inside the computer.
1
Make sure that the work surface is clean to prevent scratching the 
computer cover.
2Save and close any open files, and exit any open programs.
 HINT: Make sure the 
computer is turned off and 
not in standby or 
hibernate mode. If you 
cannot shut down the 
computer using the 
computer’s operating 
system, press and hold the 
power button for 4 
seconds. 3Turn off the computer and all attached devices.
4Make sure the computer is undocked.
5Disconnect the computer from the electrical outlet.
6To avoid possible damage to the system board, wait 10 to 20 seconds 
and then disconnect any attached devices.
7Disconnect all other external cables from the computer.
8Remove any installed PC Cards or plastic blanks from the PC Card 
slot.
9Close the display and turn the computer upside down on a flat work 
surface.
10Remove the primary battery from the battery bay and the secondary 
battery from the modular bay, if a secondary battery is in use.
 NOTICE: To avoid damaging the system board, you must remove the main 
battery and secondary battery (if present) before you service the computer.
11
Remove any installed device in the modular bay.
12To dissipate any static electricity while you work, periodically touch an 
unpainted metal surface on the computer, such as the I/O panel on the 
back of the computer chassis. 
						

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13Handle components and cards with care. Do not touch the 
components or contacts on a card. Hold a card by it edges or by its 
metal mounting bracket. Hold a component such as a microprocessor 
by its edges, not by its pins.
Recommended Tools
The procedures in this manual require the following tools:
•#1 magnetized Phillips screwdriver
•Small flat-blade screwdriver
•Small plastic scribe
•Microprocessor extractor
•Flash BIOS update program floppy disk or CD (required only when 
upgrading the microprocessor, replacing the reserve battery, or 
replacing the system board)
Screw Identification
When you are removing and replacing components, photocopy the screw 
placemat as a tool to lay out and keep track of the component screws. The 
placemat provides the number of screws and the sizes.
 NOTICE: When reinstalling a screw, you must use a screw of the correct 
diameter and length. Make sure that the screw is properly aligned with its 
corresponding hole, and avoid over tightening. 
						

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Screw Placement
Hard Drive Door Security:
M3 x 5 (1 each)Keyboard to Bottom Case 
Assembly:
M2.5 x 12 (5 each)LCD Display Bezel:
M2.5 x 5 (4 each)
Rubber Screw 
Covers (4 each)
LCD Hinge Bracket to 
Bottom Case Assembly:
M2.5 x 5 (5 each)14.1-Inch LCD Display 
Assembly and Flex-Cable 
Retention Bracket to Top 
Cover:
M2 x 4 (5 each)Display Assembly EMI 
Shield Bracket:
M2 x 3 (5 each)
Pa l m  R e s t  t o
Bottom Case Assembly:
M2 x 3 (5 each)
M2.5 x 12 (3 each
)
Hybrid Cooling Fan:
M2.5 x 5 (2 each)System Board
to Bottom Case Assembly:
M2.5 x 5 (10 each) 
						

							116Removing and Replacing Parts
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System Components
palm rest assembly
main battery
bottom case assemblysystem board
center control 
cover
hybrid cooling fan
thermal cooling 
assembly
left speaker/antenna  
assembly
modular bay devicememory module cover
fan guard
keyboardtop cover display 
assembly
hard drive
right speaker/antenna  
assembly
modem and networ
k
connector covers 
						

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Replacing the Palm Rests
1Save and close any open files, exit any open programs, and shut down 
the computer.
2If the computer is connected (docked) to an advanced port replicator 
(APR), undock it.
3Keep the display open and tilt the computer back so that you can 
access the bottom of the computer.
4Slide and hold the latch release on the left side, and remove any device 
installed in the modular bay.
5Slide and hold the latch release on the right side, and remove any 
battery installed in the battery bay.
6Locate the orange palm rest removal buttons. Firmly press the buttons 
with the eraser end of a pencil (or a dull utensil smaller than your 
finger) to release the palm rests.
7Remove the palm rests.
8To replace the palm rests, insert the tabs on the inside edge of the 
palm rest into the slots on the computer. Then press along the outside 
edges of the palm rest until it snaps into place.
Repeat the process on each side. 
						

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Replacing the Display Cover
1Slide your index fingers under the straight edge of the display cover 
until the cover pops out.
2Slide the display cover towards the back of the computer. 
						

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3User your fingers to release the cover completely, and remove it.
4To replace the display cover, bend it slightly to insert the four tabs on 
the rounded edge of the cover into the slots on the top of the 
computer.
5Press the cover along the straight edge at the back of the computer 
until it snaps into place.
6Firmly press the Dell logo until it snaps into place. Press above both 
hinge covers to engage the final snaps.
Hard Drive Assembly
 NOTICE: The hard drive is very sensitive to shock. Handle the assembly by its 
edges (do not squeeze the top of the hard drive case), and avoid dropping it.
Removing the Hard Drive 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 screw from the hard drive door.
bottom of computerM3 x 5-mm screw
hard drive door 
						

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2Slide the drive door up until the drive assembly tabs disengage from 
the door slots in the bottom case assembly.
3Pull the drive assembly straight out of the bottom case assembly.
Replacing the Hard Drive Assembly
1Push the drive assembly into the hard drive opening of the computer.
2Align the drive assembly tabs with the bottom case assembly slots and 
push down until it clicks into place.
3Replace the screw in the drive door.
Modular Bay Devices
 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
Close the display, and turn the computer upside down on a flat work 
surface.
2Slide the modular bay latch toward the right. 
3Keep holding the latch open while you pull the device out of the 
modular bay with the other hand.
Memory Module
 NOTICE: The only time you should ever access the inside of your computer is 
when you are installing memory modules or a Mini PCI card.