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USB Port Board
Dell Precision™ M90 Mobile Workstation Service Manual
Removing the USB Port Board
Replacing the USB Port Board
Removing the USB Port Board
1.
Follow the instructions in
Before Working Inside Your Computer
.
2.
Remove the hinge cover (see
Removing the Hinge Cover
).
3.
Remove the keyboard (see
Keyboard
).
4.
Remove the display assembly (see
Removing the Display Assembly
).
5.
Remove the palm rest (see
Removing the Palm Rest
).
6.
Disconnect the USB-port-board cable connector from the system board.
7.
Remove the M2.5 x 5-mm screw, and lift the board out of the computer.
Replacing the USB Port Board
1.
Insert the notch on the USB port board under the small tab on the computer base and the other side of the board over the pin.
2.
Replace the M2.5 x 5-mm screw.
CAUTION:
Before you begin the following procedure, follow the safety instructions in the
Product Information Guide
.
NOTICE:
To avoid electrostatic discharge, ground yourself by using a wrist grounding strap or by periodically touching an unpainted metal surface (such
as the back panel) on the computer.
NOTICE:
To help prevent damage to the system board, remove the main battery (see
Before Working Inside Your Computer
) before working inside the
computer.
1
USB port board
2
M2.5 x 5-mm screw
3
notch
4
USB-port-board cable
5
system board connector
6
tab
7
pin
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