Dell Inspiron 4150 - Manual (Page 57)

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System Board
Dell™ Inspiron™ 4150
Removing the System Board
The system board's BIOS chip contains the service tag sequence, which is also visible on a barcode label on the bottom of the computer. The replacement kit
for the system board includes a CD that provides a utility for transferring the service tag sequence to the replacement system board.
1. Remove the hard drive .
2. Remove the keyboard .
3. Remove the display .
4. Remove the palm rest .
5. Remove the microprocessor thermal cooling assembly .
6. Remove the microprocessor .
7. Remove the modem , memory modules , and Mini PCI card .
8. From the bottom of the computer, remove the six M2.5 x 5-mm screws labeled "circle B" that secure the system board to the bottom case.
9. Remove the three M2.5 x 5-mm screws labeled "circle B" that secure the fan guard to the bottom case.
10. Turn the computer over and remove the M2.5 x 5-mm screw, which is labeled "circle B" with an arrow, by the battery connector on the front center of
the system board.
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: Read " Preparing to Work Inside the Computer " before performing the following procedure.
1 fan guard
2 M2.5 x 5-mm screws (9)