Dell Inspiron 3000 Service Manual

							Removing and Replacing Parts 4-35
Heat Sink
Figure 4-21.  Heat Sink Removal
To remove the heat sink, follow these steps:
1. Remove the keyboard.
2. Remove black chromate panhead screws HS1, HS2, and HS3.
The heat sink will come free except for the fan cable. Push back and lift up 
on the heat sink to access the fan cable.
3. Remove the fan cable.
The fan cable is beneath the heat sink on the left side. Use a plastic scribe or 
flat-blade screwdriver, if necessary.
4. Remove the heat sink from the palmrest assembly.
HS1
HS2 HS3
heat sink
fan 
connector
(screws HS1–HS3 
are 5 mm)
5 mm
palmrest 
assembly 
						

							4-36 Dell Inspiron 3000 Series Service Manual
Status Display Panel
Figure 4-22.  Status Display Panel Removal
To remove the status display panel, follow these steps:
1. Remove the hinge covers and connector cover.
See “Keyboard” found earlier in this chapter.
2. Remove status display panel screw SD1.
3. Remove the status display panel.
The status display panel has two connectors.
4. Disconnect the status display panel connector from connector JP5 on the 
main board.
5. Disconnect the I/R cable from connector P3 on the status display panel.
6. Remove the status display panel from the palmrest assembly.
When reinstalling the status display panel, see the first Caution for “Keyboard” 
found earlier in this chapter.
(screw SD1 is 5 mm)
5 mm
SD1status display panel
status display panel connector
I/R cable
palmrest assembly
connector P3connector JP5 
						

							Removing and Replacing Parts 4-37
LCD Assembly
The LCD assembly consists of the display assembly and its related components. 
This section describes how to remove either the 12.1-inch or 13.3-inch LCD 
assembly. Later sections in this chapter provide removal and replacement proce-
dures for the components of the LCD assembly.
Figure 4-23.  LCD Assembly Removal
To remove the LCD assembly, follow these steps:
1. Remove the hinge covers and the connector cover.
See “Keyboard” found earlier in this chapter.
2. Remove the status display panel.
3. Disconnect the inverter cable.
The inverter cable is a cable harness on the right side of the LCD assembly.
LCD assembly
hinge covers (2)
H1
H2
H3
H4
connector cover
(screws H1–H4
are 8 mm)
inverter cable
LCD flex cable
G1
G2
(screws G1 and 
G2 are 5 mm)
NOTE: This is a figure of a 12.1-inch LCD assembly. The 13.3-inch LCD 
assembly has an LCD wiring harness instead of an LCD flex cable. 
connectors JP8 or JP1
status display panel
8 mm5 mm 
						

							4-38 Dell Inspiron 3000 Series Service Manual
4. For a 12.1-inch display, remove cable connector screws G1 and G2. For a 
13.3-inch display, remove only cable connector screw G1.
On 12.1-inch displays, screw G1 holds the LCD cable ground in place. G1 
has a square washer. On 13.3-inch displays, screw G1 holds the left side of 
the LVDS board (see Figure 4-32) in place.
5. For a 12.1-inch display, disconnect the LCD flex cable from connector JP8 
on the main board. For a 13.3-inch display, disconnect the LCD cable har-
ness from connector JP1 on the LVDS board (see Figure 4-32).
6. Close the display and remove hinge screws H1, H2, H3, and H4.
7. Remove the LCD assembly from the computer. 
						

							Removing and Replacing Parts 4-39
Palmrest Assembly
The palmrest assembly consists of the following components:
•IR assembly
•Left and right speaker assemblies
•Hard-disk drive heat sink
•Touch-pad assembly
The following subsections provide removal and replacement procedures for the 
components of the palmrest assembly. These procedures assume that the key-
board assembly, heat sink, status display panel, and the LCD assembly have 
been removed.
Figure 4-24.  Palmrest Assembly Removal 
To remove the palmrest assembly, follow these steps:
1. Remove bottom screws B1, B2, B3, B4, and B5.
2. Remove case screws CS1 and CS2.
These screws are to the side of the hinges.
3. Remove case screws CS3 and CS4.
These screws are on either side of the microphone.
palmrest 
assembly
base 
assembly
(screws CS1 and 
CS2 are 8 mm)
wiring 
harnessCS1
CS2CS3
CS4CS5CS6
B1
B2
B5
B3
B4
(screws B1, B2, B3, CS5, 
and CS6 are 12 mm)
 12 mm
(screws CS3, and 
CS4 are 5 mm)
8 mm
(screws B4 and 
B5 are 3 mm)
 3 mm
5 mm 
						

							4-40 Dell Inspiron 3000 Series Service Manual
4. Remove case screws CS5 and CS6.
These screws are on the edge of the heat sink opening.
5. Disconnect the speaker wiring harness from connector JP16 (see 
Figure 4-29).
This wiring harness also contains wiring for the touch pad and the touch pad 
buttons. 
6. Remove the palmrest assembly from the base assembly. 
Start at the right rear of the computer and move forward around the com-
puter. Carefully lift the palmrest assembly up and pull it forward to release 
the hidden tabs spaced around the sides and front.
When replacing the palmrest assembly, orient the assembly in its original posi-
tion on the base assembly and press firmly near each tab until the palmrest 
assembly snaps into place. Start at the front, to align those tabs first. Make sure 
all the tabs are aligned. 
						

							Removing and Replacing Parts 4-41
IR Board
  
Figure 4-25.  IR Board Removal
To remove the IR board, follow these steps:
1. Remove the 
palmrest assembly.
2. Remove IR board screw IR1.
3. Disconnect the IR board cable from the IR board connector JP1.
4. Remove the IR board from the 
palmrest assembly.
palmrest 
assembly
connector JP1I/R board
I/R board cable 
(screw IR1 
is 3 mm)
 3 mm
IR1 
						

							4-42 Dell Inspiron 3000 Series Service Manual
Hard-Disk Drive Heat Sink
Figure 4-26.  Hard-Disk Drive Heat Sink Removal
To remove the hard-disk drive heat sink, follow these steps:
1. Remove the palmrest assembly.
2. Remove hard-disk drive heat sink screws HT1 through HT6.
3. Remove the hard-disk drive heat sink from the palmrest assembly. 
palmrest assembly
HT1
HT2HT3
HT4HT5
HT6
hard-disk drive heat sink(screws HT1–HT6 are 3 mm)
 3 mm 
						

							Removing and Replacing Parts 4-43
Touch-Pad Assembly
Figure 4-27.  Touch-Pad Assembly Removal
To remove the touch-pad assembly, follow these steps:
1. Remove the palmrest assembly.
2. Remove the hard-disk drive heat sink.
3. Remove touch-pad button screw H7.
This screw holds the touch-pad button board in place.
4. Disconnect the touch-pad cable from touch-pad button connector JP1.
This is a ZIF connector on the touch-pad board. See “ZIF Connectors” 
found earlier in this chapter.
5. Remove the touch pad from the computer.
The touch pad and touch-pad board are held in place by a flange.
6. Remove the touch-pad button board from the touch-pad buttons.
The board is held in place by two tabs. Rotate the board from under the tabs.
7. Disconnect the touch-pad cable from connector JP2 on the touch-pad button 
board.
This is a pressure-fit cable. Reconnect the cable before reinstalling the 
board.
8. Remove the touch-pad button board from the computer.
The touch-pad buttons are heat-staked into the palmrest assembly and are 
not removable.
(screw H7 is 
5 mm)
H7 touch-pad 
button board
touch pad 
touch-pad cable palmrest assembly
5 mm
touch-pad buttons (2) 
						

							4-44 Dell Inspiron 3000 Series Service Manual
Speakers
 
Figure 4-28.  Speaker Removal
To remove the speaker, follow these steps:
1. Remove the 
palmrest assembly.
2. Remove the hard-disk drive heat sink.
3. Remove the touch-
pad assembly.
4. Remove left s
peaker screw S1.
5. Remove the left s
peaker cover and speaker.
To  r e
place the speaker, unsolder the wires.
6. Re
peat steps 4 and 5 for the right speaker.
The ri
ght speaker screw is S2.
The touch-
pad cable, microphone cable, microphone, speaker cables, and 
s
peaker housing are joined in one wiring harness that plugs into the main 
board connector JP1. The harness wires are held in 
place by nine tabs. When 
reinstallin
g the harness, make sure it routes correctly beneath each of these 
tabs.
plastic housings (2)
speakers (2)
(screws S1 and S2 are 3 mm)
3 mm
palmrest assembly
S2
S1
speaker wires