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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

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. 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.
   
   

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

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.
   
   
3. Reconnect the cable to the system board.
   
   
4. Replace the palm rest (see Replacing the Palm Rest).
   
   
5. Replace the display assembly (see Replacing the Display Assembly).
   
   
6. Replace the keyboard (see Keyboard).
   
   
7. Replace the hinge cover (see Replacing the Hinge Cover).
   
   

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