Dell Inspiron 7000 Service Guide

Removing and Replacing Parts 4-47
5. Turn the unit back over.
6. Remove the three 6-mm screws from the top of the base assembly, along 
the back edge.
7. Remove the 6-mm screw from the DC-DC board.
8. Remove the 4-mm screw and the washer securing the grounding strap to 
the PC Card heat shield.
9. Disconnect the speaker wire harness from connector JP18 on the left side 
of the system board.
This wire harness also contains wiring for the touch pad and the touch pad 
buttons.
10. Disconnect the LED cable...

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The IR board (see Figure 4-31) controls the power button, lid switch, micro-
phone, and lights on the indicator panel above the keyboard. 
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This procedure assumes that you have removed the palmrest assembly from 
the base assembly. To remove the IR board, follow these steps:
1. Remove the two 4-mm screws securing the IR board.
2. Disconnect the IR cable from connector JP2 on the IR board.
3. Remove the IR board.
4-mm 
screws...

Removing and Replacing Parts 4-49
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This section provides the removal procedure for the hard-disk drive heat shield.
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This procedure assumes that you have removed the palmrest assembly from 
the base assembly. To remove the hard-disk drive heat shield, follow these 
steps (see Figure 4-32):
1. Place the palmrest assembly face down.
2. Remove the five 4-mm screws securing the hard-disk drive heat shield.
3. Remove the hard-disk drive...

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This section provides the removal procedure for the touch pad assembly.
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This procedure assumes that you have removed the palmrest assembly from 
the base assembly and that you have removed the hard-disk drive heat shield. 
To remove the touch pad assembly, follow these steps (see Figure 4-33):
1. Remove the three 4-mm screws securing the touch pad button board.
2. Disconnect the two speaker cables from...

Removing and Replacing Parts 4-51
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6. Remove the touch pad button board.
7. Remove the four 4-mm screws securing the touch pad bracket.
8. Remove the touch pad bracket.
9. Remove the touch pad.
The touch pad buttons are heat-staked into the palmrest assembly and are 
not removable. 

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This section provides the removal procedure for the speakers.

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This procedure assumes that you have removed the palmrest assembly from the 
base assembly and that you have removed the hard-disk drive heat shield and 
touch pad assembly. To remove the speakers, follow these steps (see Figure 4-34):
1. Remove any tape securing the speaker cables.
2. Remove the three 4-mm screws securing the left speaker cover.
NOTE: Before...

Removing and Replacing Parts 4-53
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The following subsections provide removal and replacement procedures for 
most components of the base assembly. The procedures in these subsections 
assume that the keyboard, thermal shield, display assembly, and palmrest 
assembly have been removed.
The base assembly consists of the following components:
‡PC Card heat sink
‡Heat exchanger/fan
‡DC-DC board
‡LV D S  b o a r d
‡RJ-11 card
‡Processor board and memory module
‡Hinge saddles...

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This section provides the removal procedure for the PC Card heat sink.
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To remove the PC Card heat sink, follow these steps (see Figure 4-35):
1. Remove the two 4-mm screws securing the PC Card heat sink.
2. Remove the heat sink.
4-mm 
screws (2)
PC Card heat sink 

Removing and Replacing Parts 4-55
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This section provides the removal procedure for the heat exchanger/fan.
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To remove the heat exchanger/fan, follow these steps (see Figure 4-36):
1. Remove the two 5-mm screws securing the heat exchanger.
2. Disconnect the fan cable from connector JP17 on the system board.
3. Remove the heat exchanger/fan.
4. Inspect the two thermal pads on the bottom of the heat exchanger and 
replace them if necessary.
When...

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This section provides the removal procedure for the DC-DC board.
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To remove the DC-DC board, gently pull the DC-DC board off of connectors 
JP11 and JP16 on the system board (see Figure 4-37). Do not rock the board to 
remove it, because this may damage the connectors. 
DC-DC board