Dell Inspiron 3500 Service Manual

							Removing and Replacing Parts 4-35
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The processor module assembly can be removed without removing the palm-
rest. To remove the processor module assembly, see Figure 4-16 and follow 
these steps:
1. Remove the keyboard.
2. Remove the heat-sink fin cover.
3. Remove the two 14-mm screws securing the processor module assembly 
to the system board.
4. Lift the processor module assembly off of connector U14 on the system 
board. Lift from the outside first.
5. To disassemble the processor module assembly, slide the top plate free of 
the interlock tabs. The assembly separates into upper and lower plates and 
reveals the processor module.
6. Remove and replace the thermal pads only if needed. The pink pad covers 
the BX chip and the gray pad covers the processor chip.
When installing the processor module assembly, put pressure only on the 
areas where the connectors on the processor module assembly and on the 
system board fit together. Pressing on other areas may break pins or 
connections.
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PNH 2 x 14 (2) 1.5–1.8 kgf-cm 
						

							4-36Dell Inspiron 3500 Portable Computer Service Manual
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The fan cover and fan can be removed without removing the palmrest. To 
remove the fan cover and fan, see Figure 4-16 and follow these steps:
1. Remove the display assembly.
2. Remove the keyboard.
3. Remove the heat-sink fin cover.
4. Remove the 5-mm screw securing the fan cover.
5. Remove the fan cover.
6. Disconnect the fan cable from connector J6 on the system board.
7. Remove the fan.
NOTE: Note the positioning of the fan and the routing of the fan cable carefully 
so you can duplicate it during installation. An arrow on the top of the fan indi-
cates that the flow of air is from the outside of the computer in to the board.
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FPH 2.5 x 5 (1) 3.0–3.5 kgf-cm 
						

							Removing and Replacing Parts 4-37
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The modem card is an option available only to customers in the U.S. and 
Canada. 
The modem card can be removed without removing the palmrest. To remove 
the modem card, see Figure 4-16 and follow these steps:
1. Remove the keyboard.
2. Remove the 14-mm screw from the right side of the modem card.
3. Pry up the modem card from the right side.
4. Disconnect the modem cable from connector J2 on the modem card.
5. Remove the modem card.
When installing the modem card, slip it into place under the system-board 
retaining clip. Put pressure only on the areas where the connectors on the 
modem card and on the video board fit together. Pressing on other areas may 
flex the card and break connections.
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FPH 2.5 x 14 (1) 3.0–3.5 kgf-cm 
						

							4-38Dell Inspiron 3500 Portable Computer Service Manual
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The video board can be removed without removing the palmrest. To remove 
the video board, see Figure 4-16 and follow these steps:
1. Remove the display assembly.
2. Remove the keyboard.
3. Remove the LVDS board.
4. Remove the modem card, if present.
5. Remove (and save for installation) any Kapton tape securing the modem 
cable to the video board and lift the cable out of the way.
6. Remove the two 4-mm jack screws on either side of the display connector 
that hold the video board to the I/O bracket. 
7. Disconnect the touch-pad FPC cable from the side-lift ZIF connector J4 on 
the video board. 
8. Remove the 14-mm screw holding the system-board retaining clip. 
Remove both the screw and retaining clip.
9. Remove the video board from connectors JP2 and JP3/JP4 on the system 
board. Lift the end toward the touch pad up, then lift up and pull back the 
other end to free it from the I/O bracket.
When installing the board, put pressure only on the areas where the connec-
tors on the video board and on the system board fit together. Pressing on other 
areas may flex the board and break connections.
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jack 2.5 x 4 (2) 3.0–3.5 kgf-cm
FPH 2.5 x 14 (1) 3.0–3.5 kgf-cm 
						

							Removing and Replacing Parts 4-39
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To remove the palmrest assembly, see Figures 4-15 and 4-23 and follow these 
steps:
1. Remove the display assembly.
2. Remove the keyboard.
3. Turn the computer face down.
4. Remove the seven 19-mm palmrest screws from the bottom of the com-
puter (see Figure 4-23).
5. Turn the computer face up.
6. Remove the palmrest assembly.
After installing the palmrest assembly, make sure that the battery-bay release 
latch and the options-bay release latch operate smoothly. If they do not, slightly 
loosen the two palmrest assembly screws that secure the latches so that the 
latches move easily.
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FPH 2.5 x 19 (7) 3.5–4.0 kgf-cm
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screws (7) 
						

							4-40Dell Inspiron 3500 Portable Computer Service Manual
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To remove the touch pad assembly, see Figure 4-15 and follow these steps:
1. Remove the display assembly.
2. Remove the keyboard.
3. Remove the palmrest assembly.
4. Remove the three 5-mm screws securing the touch pad assembly to the 
palmrest assembly.
5. Lift the touch pad assembly out of the palmrest assembly.
6. Disconnect the touch-pad FPC cable from the center-lift ZIF connector J1 
on the touch pad.
The touch pad buttons are heat-staked into the touch pad assembly and 
cannot be removed.
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FPH 2.5 x 5 (3) 3.0–3.5 kgf-cm 
						

							Removing and Replacing Parts 4-41
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To remove the system board rails, see Figure 4-16 and follow these steps:
1. Remove the display assembly.
2. Remove the keyboard.
3. Remove the palmrest assembly.
4. Remove the infrared board.
5. Remove the 5-mm screw and the 16-mm screw securing the right system- 
board rail.
6. Remove the right system-board rail.
7. Remove the 5-mm screw securing the left system-board rail.
8. Remove the left system-board rail.
9. Remove the release latches for the battery bay and options bay, which 
were previously held in place by the system board rails.
10. Remove the heat sink.
When installing the rails, be sure that the speaker cables are not pinched.
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FPH 2.5 x 5 (2) 3.0–3.5 kgf-cm
FPH 2.5 x 16 (1) 3.0–3.5 kgf-cm 
						

							4-42Dell Inspiron 3500 Portable Computer Service Manual
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To remove the DC/DC board, see Figure 4-16 and follow these steps:
1. Remove the display assembly.
2. Remove the keyboard.
3. Remove the palmrest assembly.
4. Remove the system board rails.
5. Remove the 14-mm screw.
6. Gently lift the DC/DC board off of the connector on the system board.
When installing the board, put pressure only on the areas where the connec-
tors on the DC/DC board and on the system board fit together. Pressing on 
other areas may flex the board and break connections.
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FPH 2.5 x 14 (1) 3.0–3.5 kgf-cm 
						

							Removing and Replacing Parts 4-43
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To remove the speakers, see Figure 4-16 and follow these steps:
1. Remove the display assembly.
2. Remove the keyboard.
3. Remove the palmrest assembly.
4. Remove the system board rails.
5. Remove the DC/DC board.
6. Disconnect the left speaker cable from connector J13 on the system 
board.
7. Disconnect the right speaker cable from connector J15 on the system 
board.
8. Lift the speakers and cables out of the bottom plastic.
NOTE: The left and right speakers are interchangeable. Note the routing of the 
speaker cables through the plastic routing ribs for installation. 
						

							4-44Dell Inspiron 3500 Portable Computer Service Manual
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The PC Card cage is supplied as a part of the system board assembly. How-
ever, if only the PC Card cage needs replacement, use this procedure to 
remove and replace the PC Card cage. There is no need to remove the entire 
system board.
To remove the PC Card cage, see Figure 4-16 and follow these steps:
1. Remove the display assembly.
2. Remove the keyboard.
3. Remove the palmrest assembly.
4. Remove the system board rails.
5. Remove the LVDS board, modem card (if present), and video board.
6. Remove the four 14-mm screws securing the PC Card cage to the system 
board.
7. Remove the PC Card cage.
When installing the PC Card cage, ensure that the modem cable is routed cor-
rectly and is not pinched by the cage.
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PNH 2 x 14 (4) 1.5–1.8 kgf-cm